Regional threat planner

Comprehensive preparation means nothing if you're stocking hurricane shutters in Montana or practicing earthquake drills in Kansas. The most effective preparedness strategy starts with an honest ranking of what is actually likely to happen where you live — not what makes headlines nationally — and then works down that list systematically. This page organizes the United States into eight distinct regions, each with a ranked threat list and a recommended action sequence. Your county's specific history may refine the picture further, but the regional profile is the right starting point for ordering your effort and spending.

Border zones overlap. A household in coastal Virginia faces a different threat mix than one in the Shenandoah Valley, even though both are in the same state. Read your region's section first, then glance at adjacent regions if you're near a geographic boundary — the threats that dominate neighboring zones often bleed across.

How to use this page

  1. Find your region below using the eight-region model: Pacific Northwest, California/Southwest, Mountain West, Great Plains/Tornado Alley, Gulf/Southeast, Northeast/Mid-Atlantic, Midwest, and Alaska/Hawaii.
  2. Read your region's top-5 threat list and the one-paragraph recommended action sequence.
  3. Click the Foundation and Guide links specific to your region's threats. The links route to depth pages — this page ranks and routes; those pages teach and specify.

Before you start

If you're unsure which region applies to you, two quick sanity checks help: FEMA's National Risk Index maps 18 specific hazard ratings to your county, and NOAA's local climate pages list your nearest National Weather Service office's historical hazard summaries. Cross-link to the Preparedness self-assessment for your full readiness baseline, and Threat planning methodology for the probability-weighted matrix that turns your regional threat list into a household preparation sequence.

Region A — Pacific Northwest

Washington, Oregon, Idaho, and the western portions of Montana and British Columbia

The Pacific Northwest is geographically split by the Cascade Range. West of the Cascades, mild, wet winters and frequent windstorms define the hazard profile; east of the Cascades, dry summers, grassland wildfire, and sustained cold become the primary concerns. The shadow of the Cascadia Subduction Zone megaquake hangs over the entire region — it is the defining low-frequency, catastrophic event that reshapes every other planning priority. FEMA's National Risk Index rates earthquake, wildfire, and winter weather as the three highest composite-risk hazards for this region by expected annual loss.

Top 5 threats, ranked:

  1. Earthquake (Cascadia Subduction Zone) — A full-rupture M8.7–9.2 megaquake is geologically inevitable; USGS paleoseismic data indicates a 10–15% probability in the next 50 years. Zero warning. Shaking duration exceeds four minutes. Tsunami arrival on the outer coast begins 15–30 minutes after rupture.
  2. Wildfire — The 2020 Labor Day fires burned over 1 million acres in Oregon in 72 hours. East-of-Cascades households face near-annual seasons; west-side WUI communities face increasing ember-cast risk.
  3. Winter outage — Ice storms during cold-air damming events west of the Cascades routinely leave 50,000–200,000 customers without power. East of the Cascades, blizzards and temperatures below -20°F (-29°C) are routine.
  4. Volcanic event — Five Cascade arc volcanoes are classified as "very high threat" by USGS: Rainier, St. Helens, Hood, Baker, and Glacier Peak. Ash fall, lahars, and pyroclastic flows follow the same river drainages regardless of eruption size.
  5. Tsunami — Tied to the megaquake scenario for coastal residents. Interior communities face secondary flooding risks from lahars and river surges rather than direct ocean inundation.

Recommended action sequence: Earthquake preparation is first because it requires the most structural and behavioral pre-positioning with zero warning time. Secure heavy furniture, identify gas shutoff, stage shoes and a flashlight beside the bed, and build a 14-day water and food supply (well pumps and municipal systems fail in earthquakes). Layer wildfire defensible space work in spring before fire season, and pre-commit an evacuation trigger ("we leave when a watch is issued"). Add winter backup heat and a power supply for well-pump households before November.

Foundation and guide cross-links:

  • Earthquake — pre-event hardening, gas shutoff, post-event assessment
  • Wildfire — defensible space zones and evacuation triggers
  • Winter storm — outage duration planning and water supply for well-pump households
  • Volcanic events — ash fall, lahar corridors, shelter-in-place vs. evacuate
  • Tsunami — near-field warning windows, inundation zones
  • Fire-resistant construction — ember-resistant vents, Class A roofing, defensible space per NFPA 1144
  • Evacuation planning — tsunami evacuation routes, wildfire departure timing
  • Wood heat — backup heat for extended winter outages

Insurance gap: Standard homeowner's policies in Oregon and Washington do not include earthquake coverage. A separate earthquake endorsement or California Earthquake Authority equivalent is required. Wildfire coverage in WUI areas is increasingly restricted — verify your carrier has not non-renewed quietly.

Evacuation note: Tsunami evacuation routes are signed in most coastal communities and follow elevation contours, not road networks. Know your nearest high-ground route on foot — roads may be blocked within minutes of shaking. For wildfire evacuation, pre-loading vehicles at the "watch" stage, not the "warning" stage, is the margin that avoids gridlock.

Region B — California / Southwest

California, Nevada, Arizona, New Mexico, and Utah

The California/Southwest region holds the country's most concentrated convergence of high-probability, high-severity threats. Wildfire risk in California has reached the point where major insurers have exited the market, leaving many residents on the FAIR Plan as the insurer of last resort. The Colorado River, source of water for 40 million people in seven states, has been at below-30% reservoir storage for multiple consecutive years. Heat events in the Desert Southwest now produce annual death tolls that exceed tornadoes, floods, and hurricanes combined.

Top 5 threats, ranked:

  1. Wildfire — California alone has 9 of the 10 most destructive fires in US recorded history by structure loss. The 2025 Los Angeles Palisades and Eaton fires collectively caused over 16,000 structures destroyed in a single event sequence. WUI communities throughout the region face annual evacuation-season planning.
  2. Drought — Multi-year megadrought conditions persist across the American Southwest per USGS PDSI reconstruction. Municipal rationing, domestic well failure, and irrigation restrictions are active planning factors now, not future scenarios.
  3. Heat wave — Maricopa County, Arizona, recorded 645 heat-related deaths in 2023. Grid-down events during heat waves are life-threatening within hours for elderly residents and those without backup cooling.
  4. Earthquake — The San Andreas fault system (capable of M7.8–8.0 on the southern segment), Hayward fault (M6.8–7.2), and Basin and Range fault systems in Nevada and Utah maintain seismic exposure for the entire region.
  5. Water restrictions and supply disruption — The FEMA NRI rates water scarcity and drought as compounding hazards for much of the Southwest. Well failure, municipal rationing orders, and agricultural water priority conflicts are planning-level events for rural households.

Recommended action sequence: Wildfire defensible space work is the first investment for any household in California or the Desert Southwest WUI — the 0-100-foot (0–30 m) zone is life-safety and the 100-300-foot (30–90 m) zone is significant property protection. Simultaneously, build a 14-day water supply and understand your local utility's Stage 1/2/3 rationing triggers. Heat wave preparation (passive cooling, hydration protocols, cooling center locations, backup power for medical devices) is the second tier. Earthquake pre-positioning (furniture anchoring, gas shutoff knowledge) layers on at minimal incremental cost.

Foundation and guide cross-links:

  • Wildfire — defensible space, evacuation pre-commitment, ember-cast dynamics
  • Drought — water rationing triggers, well failure indicators
  • Heat wave — passive cooling, heat illness recognition, vulnerable-member protocols
  • Earthquake — gas shutoff, furniture anchoring, post-event assessment
  • Water rationing — tiered conservation protocols when supplies are restricted
  • Off-grid cooling — earth-tube, evaporative, and mass cooling without grid power
  • Fire-resistant construction — NFPA 1144 defensible space and ember-resistant retrofits
  • Evacuation planning — wildfire departure timing and route pre-selection

Insurance gap: Standard homeowner policies in California do not include earthquake coverage; California Earthquake Authority (CEA) policies fill the gap. Wildfire coverage has been formally denied or not renewed by many carriers since 2019 — the FAIR Plan provides coverage but at ACV, not RCV, and with a lower per-occurrence limit than most standard HO-3 policies. Verify your current status before fire season.

Evacuation note: California wildfire evacuations under dry-wind (Diablo, Santa Ana) conditions move faster than any other natural disaster evacuation scenario. Pre-loading vehicles before a watch is issued — not when flames are visible — is the survival-critical behavior pattern.

Region C — Mountain West

Colorado, Wyoming, interior Montana, and interior Idaho

The Mountain West combines the wildfire exposure of the Pacific Northwest and California with the extreme cold of the Great Plains, the logistical challenges of remote rural living, and evacuation distances that dwarf anything in the contiguous states. A house fire in a remote Colorado mountain community may be 45–90 minutes from the nearest fire apparatus. A winter outage in a rural Wyoming valley may last 7–21 days before restoration crews can access the distribution lines. Planning depth has to match isolation depth.

Top 5 threats, ranked:

  1. Wildfire — WUI boundaries in Colorado, Montana, and Wyoming now encompass thousands of subdivisions that did not exist in high-fire-risk terrain 20 years ago. The 2021 Marshall Fire in Boulder County burned 6,000 acres on December 30 — outside the traditional fire season — demonstrating that fire-season assumptions have shifted.
  2. Winter outage — Cold Plains blizzards and Mountain West ice storms produce outages that coincide with temperatures below 0°F (-18°C). Rural distribution lines may traverse 50–100 miles (80–160 km) of terrain; restoration timelines routinely reach 7–21 days.
  3. Drought — Multi-year drought deepens wildfire risk, reduces domestic well yields, and strains livestock water on range land. The drought-wildfire feedback loop is the defining environmental pattern of the Mountain West in the 2020s.
  4. Evacuation logistics — long distances — A "short" evacuation route in a rural Mountain West community can exceed 60–100 miles (96–160 km) on two-lane roads that may be snow-closed in winter or fire-closed in summer. Route pre-planning with alternates is a necessity, not a refinement.
  5. Blizzards and extreme cold — North-facing valleys and high elevations in Montana, Wyoming, and Colorado experience sustained cold below -30°F (-34°C) with wind chill. Exposed skin develops frostbite in under five minutes at these temperatures.

Recommended action sequence: Wildfire defensible space and pre-loaded vehicle readiness are the summer-season priorities. Winter preparation centers on backup heat and fuel supply before October — a wood stove with three cords of seasoned firewood, or a propane system sized for 14+ days of heating, is a basic safety requirement, not an upgrade. Evacuation route documentation (primary + alternate, with mileage and fuel requirements) should be completed before fire season every year.

Foundation and guide cross-links:

Insurance gap: Wildfire insurance in WUI areas of Colorado and Montana has seen the same carrier-exit pattern as California, slightly delayed. Verify your policy hasn't quietly been non-renewed, and confirm whether your coverage is ACV or RCV for structure and contents. Separate flood coverage is relevant for riverside Mountain West properties during spring snowmelt.

Evacuation note: In a summer wildfire evacuation with strong winds, the window from "watch issued" to "road closure" may be 30–90 minutes in narrow mountain valleys. Pre-loading vehicles before you decide to leave is the behavioral habit that makes the timing work.

Region D — Great Plains / Tornado Alley

Texas panhandle, Oklahoma, Kansas, Nebraska, Missouri, Iowa, and parts of South and North Dakota

Tornado Alley produces the highest density of significant tornadoes in the world by NOAA Storm Prediction Center records. Oklahoma averages 62 tornadoes per year; Kansas averages 96. The average NWS tornado warning lead time is 13 minutes — enough to reach a safe room if one exists and you know where it is, but not enough to improvise. The defining structural investment for this region is a FEMA P-320 above-ground safe room rated to EF5 wind speeds, installed before you need it.

Top 5 threats, ranked:

  1. Tornado — Peak season is April through June, with secondary activity in November. The 2011 Joplin, Missouri tornado (EF5, 161 deaths) and 2013 Moore, Oklahoma tornado (EF5, 24 deaths) are the regional benchmarks for planning scale.
  2. Severe weather (hail, derecho, microbursts) — Supercell thunderstorms that produce tornadoes also produce baseball-sized hail and straight-line winds above 80 mph (130 km/h). These events are more frequent than tornadoes and cause significant annual property damage.
  3. Winter outage — ice storms — The February 2021 Arctic outbreak left 4.5 million Texas households without power for multiple days at temperatures below 10°F (-12°C). Ice storms cause more cumulative outage-hours in this region than tornadoes in most years.
  4. Drought and extreme heat — Multi-year drought cycles on ENSO-linked timelines affect livestock water, well yields, and agricultural income. Summer heat above 105°F (41°C) combined with dry air is a serious health hazard for outdoor workers and elderly residents.
  5. Flash flooding — Despite the semi-arid reputation, flash flooding is the leading cause of weather-related deaths in Oklahoma and Kansas. Desert-equivalent drainage rates mean six inches (15 cm) of rain in two hours overwhelms urban stormwater systems and fills arroyos in under 10 minutes.

Recommended action sequence: Safe room installation is the first structural investment if you do not already have a basement. A FEMA P-320-certified above-ground safe room typically costs a moderate to significant investment depending on size and material, but it is the only structure that provides reliable protection against EF4–EF5 direct hits. Layer a NOAA weather radio with SAME alerts programmed to your county — warning lead time only helps if you receive it. Winter preparation centers on 14-day water and heat supply, recognizing that an ice storm outage in January is the second-most-likely scenario after a tornado warning.

Foundation and guide cross-links:

Insurance gap: Hail and wind deductibles in Kansas and Oklahoma are frequently written as a percentage of dwelling value (2–5% is common), not a flat dollar amount. On a $300,000 home, a 3% wind deductible means $9,000 out-of-pocket before your policy pays. Verify the deductible structure of your policy before tornado season.

Evacuation note: Tornado evacuation is generally not the answer — the safe room is. For the rare scenario where a tornado warning catches you on the road, the protocol is to leave your vehicle and lie flat in a ditch away from trees and overhead lines, never shelter under an overpass. For ice storm scenarios, evacuation before roads become impassable (not after) is the timing principle.

Region E — Gulf Coast / Southeast

Texas coast, Louisiana, Mississippi, Alabama, Florida, Georgia, South Carolina, and North Carolina

The Gulf Coast and Southeast face the most complex multi-hazard environment in the continental US. Hurricane season runs June 1 through November 30, and the preparation window overlaps with tornado season, heat wave risk, and near-annual flooding events. Flood insurance is separate from homeowner coverage and is frequently required by mortgage lenders in this region — yet FEMA data shows that 40% of NFIP flood claims come from households outside mapped high-risk zones. The financial-preparedness gap in this region often exceeds the physical-preparedness gap.

Top 5 threats, ranked:

  1. Hurricane — The Gulf Coast receives more direct hurricane landfalls than any other US coastal region per NOAA NHC 1991–2020 climatology. Storm surge — not wind — is the primary killer. NHC removed surge from the Saffir-Simpson wind scale specifically because surge depends on local bathymetry, storm size, and forward speed, not wind category alone. Use NHC's National Storm Surge Risk Maps (nhc.noaa.gov/nationalsurge) for your specific address.
  2. Flood — River flooding independent of hurricanes is near-annual along the Red River, Sabine, Trinity, Brazos, and Mississippi basins. Harris County (Houston) experienced 500-year flood events three times in three years. Standard homeowner policies do not cover flood.
  3. Heat wave and humidity — Gulf Coast summer heat combines temperatures above 95°F (35°C) with humidity above 70%, producing heat-index values above 110°F (43°C) regularly from June through September. Extended power outages during heat events are life-threatening.
  4. Tornado — "Dixie Alley" (Louisiana, Mississippi, Alabama) has seen significant tornado activity shift eastward from the traditional Great Plains corridor since 1979 per peer-reviewed analysis. Gulf Coast tornadoes frequently occur at night and embedded in hurricanes, reducing the 13-minute average NWS lead time.
  5. Severe weather (afternoon thunderstorms) — The Southeast's daily thunderstorm season (May–September) produces lightning fatalities, hail damage, localized flooding, and routine power outages that cumulatively exceed hurricane-related outages in most years.

Recommended action sequence: Hurricane preparation is the defining regional priority. The two decisions that matter most are (1) evacuation timing — leave before surge cuts off coastal roads, not after — and (2) shelter-in-place adequacy for those who stay. A hurricane-hardened home requires storm shutters or impact windows, a reinforced garage door, and roof deck fastening. Build a 14-day water and food supply (post-storm resupply can take 7–14 days in rural areas). Verify NFIP flood insurance status before June 1 every year — the 30-day waiting period means you cannot buy it when a storm is forming.

Foundation and guide cross-links:

  • Hurricane — surge risk maps, evacuation timing framework, 72-hour departure decision
  • Flood — NFIP enrollment, wet-proofing vs. dry-proofing your structure, sump pump sizing
  • Heat wave — passive cooling, heat illness recognition, grid-down heat protocols
  • Tornado — embedded-hurricane tornado warnings, nighttime safe-room protocol
  • Storm hardening — Simpson hurricane ties, impact windows, garage door bracing
  • Flood protection — flood vents, sump pump installation, French drains
  • Evacuation planning — contraflow awareness, departure windows, route documentation
  • Severe weather guide — before/during/after protocols for every Gulf Coast threat type

Insurance gap: The Louisiana and Florida homeowner's insurance markets have experienced significant insurer exits since 2020. Verify your carrier's financial stability rating before hurricane season. Flood insurance through NFIP is separate from homeowner coverage — verify enrollment and coverage limits before June 1. Florida homeowners should verify their wind deductible: a 5% hurricane wind deductible on a $400,000 home means $20,000 out-of-pocket before the policy responds.

Evacuation note: Gulf Coast hurricane evacuation is a timing problem, not a route problem. Leave 48–72 hours before predicted landfall — before contraflow is activated and before fuel runs out along evacuation corridors. The households that shelter in surge zones are not trapped; they choose not to leave in time.

Region F — Northeast / Mid-Atlantic

Maine, Vermont, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Maryland, Delaware, Virginia, and parts of West Virginia

The Northeast and Mid-Atlantic experience a different kind of multi-hazard pressure than the Gulf Coast: slower-moving threats that compound over time. A nor'easter deposits 24 inches (60 cm) of snow, knocks out power for seven days, collapses roofs with ice dams, floods coastal streets with surge, and then — as it departs — freezes the standing water. The 1998 Northeast ice storm left four million people without power for up to five weeks in parts of Maine and Vermont. That duration is the planning baseline, not the exception.

Top 5 threats, ranked:

  1. Nor'easter and winter outage — Nor'easters produce 12–36 inches (30–90 cm) of snowfall in 24–36 hours and routinely cause 7–14 day outages in rural areas. Great Lakes lake-effect snow adds localized 3–5 foot (90–150 cm) accumulations in downwind corridors of Lakes Erie and Ontario. Ice storms cause more outage-hours than snow in most years.
  2. Flood (coastal and riverine) — Spring snowmelt flooding is near-annual across New England river valleys. Coastal nor'easters produce surge in Boston Harbor, Narragansett Bay, and Long Island Sound. Superstorm Sandy (2012) produced 9-foot (2.7 m) surge at Battery Park — the planning calibration for worst-case coastal exposure.
  3. Hurricane (decreasing intensity with latitude, still real) — Post-tropical and weakened tropical systems regularly produce significant rainfall and wind events in the Northeast. Hurricane Ida (2021) killed 41 people in New York and New Jersey — inland, from rainfall and flash flooding, not surge.
  4. Heat wave — The July 2023 heat event pushed temperatures to 95–100°F (35–38°C) in Boston and New York. Older urban housing stock retains heat poorly; elderly residents without air conditioning are highly vulnerable. FEMA NRI rates heat as a high-risk hazard for the Mid-Atlantic corridor.
  5. Severe weather (isolated tornadoes, derechos) — The Northeast is not traditionally "tornado country," but isolated EF0–EF2 events occur annually, and derecho events in the Mid-Atlantic produce 70–80 mph (113–129 km/h) straight-line winds that match hurricane-force gusts.

Recommended action sequence: Winter preparation is the anchor priority. Backup heat with at least 14-day fuel supply (propane, wood, or kerosene) and a 14-day water supply (especially for well-pump households) before November 1 is the baseline. Layer weatherproofing to reduce heat loss and ice dam risk. Coastal households should verify NFIP flood insurance and know their surge zone classification. Summer heat wave preparation is increasingly relevant — a window air conditioner or portable unit staged before the heat season, plus cooling-center location awareness, covers the gap.

Foundation and guide cross-links:

  • Winter storm — nor'easter duration planning, backup heat sizing, ice dam prevention
  • Flood — spring snowmelt flooding, NFIP enrollment, wet-proofing
  • Hurricane — post-tropical rainfall and wind, inland flooding recognition
  • Heat wave — urban heat island effects, passive cooling, elderly-member protocols
  • 72-hour winter outage — cold-specific outage playbook for the 3-day window
  • Weatherproofing — ice dam prevention, air sealing, vapor barrier
  • Off-grid cooling — strategies for summer heat without grid power
  • Wood heat — stove sizing and creosote management for extended outages

Insurance gap: Ice dam damage — water intrusion from ice buildup at roof eaves — is one of the most common winter losses in the Northeast and is often excluded or limited under standard HO-3 policies. Verify your coverage. NFIP flood coverage is critical for coastal and valley-floor households; the 30-day waiting period means you cannot buy it when a nor'easter is forecasted.

Evacuation note: Nor'easter evacuations are rare; shelter-in-place with backup heat is the default protocol. The exception is coastal surge zones during major nor'easters or hurricanes, where the evacuation decision must happen before roads become impassable from rising water — not after.

Region G — Midwest

Ohio, Indiana, Illinois, Michigan, Wisconsin, Minnesota, and the non-Plains portions of Iowa and Missouri

The Midwest sits at the confluence of multiple weather systems without any single dominant threat. Great Lakes-effect snow produces lake-specific localized extremes in Michigan, Wisconsin, and Minnesota. The Mississippi and Ohio river systems create near-annual flooding for valley-adjacent communities. The eastern edge of Tornado Alley extends into Indiana, Illinois, and Missouri. And extreme summer heat — unglamorous but lethal — kills more Midwesterners annually than any other natural hazard per NOAA data.

Top 5 threats, ranked:

  1. Severe weather (derecho, supercell thunderstorms) — Derechos — fast-moving wind-damage events spanning 240+ miles (390 km) — originate over the Great Plains and track east through the Midwest. The August 2020 Iowa derecho produced sustained 100–140 mph (160–225 km/h) winds, caused $11 billion in damage, and destroyed 10 million acres of crops in a single day per Iowa State University Extension estimates.
  2. Winter outage (Great Lakes-effect and ice storms) — Lake-effect snow in downwind Michigan, Wisconsin, and Minnesota produces localized accumulations of 3–5 feet (90–150 cm) in single events. Ice storms across the region cause more cumulative outage-hours than snow, and rural restoration timelines routinely reach 7–14 days.
  3. Flood — Great Lakes basin rivers and the upper Mississippi watershed flood on near-annual cycles. The 1993 upper Mississippi River floods inundated 20 million acres across nine states per USGS post-flood analysis. Standard homeowner policies do not cover flood — NFIP enrollment is the gap.
  4. Tornado — The Midwest receives the eastern extension of Tornado Alley, including significant outbreak events in Illinois, Indiana, and Missouri. The 1965 Palm Sunday outbreak (47 tornadoes across six states, 256 deaths) remains the regional historical calibration.
  5. Heat wave — The 1995 Chicago heat wave killed 739 people in five days per CDC mortality data — still the deadliest natural disaster in Chicago's recorded history. The pattern recurs: 2012, 2019, and 2023 all produced significant heat events across the region.

Recommended action sequence: The Midwest's multi-threat profile makes the universal baseline — 14-day water, food, and backup heat supply — especially valuable. Add a NOAA weather radio with SAME alerts for severe weather and tornado warnings. If you have no basement and live in an area with significant tornado history, a FEMA P-320 safe room or interior storm shelter is the structural investment to prioritize. For basement-equipped households, the shelter question is already answered — focus instead on water supply for extended outages and NFIP flood coverage if you're in a river valley.

Foundation and guide cross-links:

  • Winter storm — lake-effect snow, ice storm outage planning, pipe protection
  • Flood — NFIP enrollment, sump pump sizing, French drain installation
  • Tornado — shelter protocol, NOAA warning lead time, FEMA P-320 safe rooms
  • Heat wave — urban heat island, passive cooling, elderly-member protocols
  • Basements and safe rooms — hardening existing basement spaces, FEMA spec safe rooms
  • Storm hardening — derecho and severe-wind resistance measures
  • 72-hour winter outage — cold-specific playbook for the typical outage window
  • Severe weather guide — multi-threat Midwest preparation and response

Insurance gap: Sump pump backup coverage is a common standalone rider in the Midwest that most homeowners skip — and that most standard HO-3 policies exclude. A sump pump failure during a flood event can cause the same financial loss as a direct flood. NFIP flood coverage remains separately necessary for properties in mapped flood zones; the sump rider covers the gap between mapped and unmapped events.

Evacuation note: Midwest evacuations are primarily flood-driven. The planning principle is to leave before roads become impassable — spring snowmelt plus rainfall can raise rivers faster than media coverage can track. Know your nearest river gauge and its flood-stage thresholds.

Region H — Alaska and Hawaii (and non-contiguous territories)

Alaska and Hawaii sit in separate geological and climatic contexts from the contiguous United States and from each other. What they share is remoteness from the continental mutual-aid network — post-disaster resupply and recovery support reaches both states on different timelines than any contiguous US region.

Alaska

Threat profile: Alaska faces the most compressed high-consequence threat stack of any US region. The Aleutian subduction zone is one of the world's most seismically active — the 1964 Good Friday earthquake (M9.2) is the largest ever recorded in North America and the second-largest in global recorded history. Volcanic activity is routine in the Aleutian arc; ash fall from eruptions at Redoubt, Augustine, and Spurr has disrupted Anchorage aviation and infrastructure multiple times in the past 40 years.

Top 5 threats (Alaska):

  1. Earthquake — The Aleutian arc produces M7+ earthquakes multiple times per decade. Structural preparation, gas shutoff knowledge, and post-event assessment are the primary mitigations.
  2. Extreme cold and winter outage — Interior Alaska routinely reaches -50°F (-46°C) with wind chill. Outages in rural Bush communities — where fuel delivery may be the only heating supply — can be life-threatening within hours. Heating fuel reserves for the full winter are a basic safety requirement.
  3. Volcanic ash fall — Ash from active volcanoes disrupts aviation, contaminates water supplies, and damages engines. N95-equivalent respiratory protection and covered water storage are the primary mitigations.
  4. Wildfire (boreal forest, increasing) — Permafrost thaw is drying boreal forest floor duff, and Alaska has seen increasingly severe fire seasons since 2000. The 2022 season burned 3.1 million acres per Alaska Division of Forestry and Fire Protection.
  5. Tsunami — Near-field earthquake-generated tsunamis can reach coastal Alaska communities in under 30 minutes. The 2021 Chignik M8.2 triggered tsunami advisories for much of coastal Alaska.

Hawaii

Threat profile: Hawaii's primary hazards combine Pacific Ring of Fire geology with tropical weather patterns. The 2023 Maui wildfire (100 deaths, 2,200 structures) demonstrated that wildfire risk on the dry leeward sides of Hawaiian islands is no longer theoretical — it is an active planning variable comparable to California WUI.

Top 5 threats (Hawaii):

  1. Hurricane — Peak season July through November. Hawaii's oceanic isolation means limited pre-storm resupply windows and post-storm recovery that takes weeks to months rather than days.
  2. Tsunami — Pacific Ring of Fire tsunamis can affect Hawaii with minimal warning from distant earthquakes. The Pacific Tsunami Warning Center issues alerts, but near-source events (Aleutian subduction) may allow only 15–20 minutes to reach high ground.
  3. Volcanic activity — Kilauea on the Big Island has been continuously erupting since 1983. Lava-zone classifications (1–9) define long-term habitability risk; Pele's hair and laze (lava ocean-entry) produce respiratory hazards during active flow.
  4. Flood — Hawaiian topography concentrates rainfall from trade-wind orographic lift on windward slopes. Flash flooding from rapidly rising streams is the primary inland hazard.
  5. Wildfire (increasing dry-side risk) — The leeward sides of all major Hawaiian islands have become significantly drier due to reduced trade-wind rainfall. Invasive grasses (buffelgrass, molasses grass) provide continuous fine-fuel loads that burn readily.

Foundation and guide cross-links (both states):

  • Earthquake — gas shutoff, structural hardening, post-event assessment
  • Winter storm — Alaska cold-weather protocols, heating fuel reserves
  • Volcanic events — ash fall respiratory protection, water supply contamination
  • Tsunami — warning center alerts, near-field timing, high-ground routes
  • Hurricane — Hawaiian post-storm resupply planning, storm hardening
  • Wildfire — Hawaii WUI defensible space, Alaska boreal fire preparation
  • Evacuation planning — route documentation in island and remote contexts

Insurance gap: Alaska earthquake insurance is a separate endorsement rarely included in standard homeowner policies. Hawaii lava-zone exclusions are common — properties in Zone 1 and Zone 2 on the Big Island may be uninsurable or insurable only through surplus-lines carriers at significant premium. Verify lava-zone classification before purchasing property in Hawaii.

Evacuation note: Both Alaska and Hawaii have limited transportation infrastructure relative to their geographic size. In Alaska, many rural communities have no road access and are served only by small aircraft or boats. In Hawaii, evacuation routes are limited to two lanes in most directions — leaving early is not a courtesy, it is a necessity to avoid gridlock that blocks emergency vehicles.

Cross-cutting recommendations (applies to every region)

Three actions apply regardless of where you live, what your regional threat profile looks like, or what your budget is. Layer regional specifics on top of these three.

1. Complete the preparedness self-assessment. The Preparedness self-assessment rates your readiness across all 12 Foundations in under 10 minutes and identifies your lowest-scoring areas. Your regional threat profile tells you what to prepare for; the assessment tells you how far along you are.

2. Read the First 30 Days guide. The First 30 Days Off-Grid Survival Guide provides the universal baseline that makes regional preparation functional: water, food, energy, and shelter fundamentals that apply regardless of whether your scenario is a hurricane, a blizzard, or an earthquake. The regional plan builds on top of this baseline, not instead of it.

3. Build the household communications plan. The household communications plan — rally points, out-of-area contact, radio channel assignments, meeting-point protocols — is the coordination layer that every regional threat scenario eventually needs. A hurricane evacuation with no pre-agreed meeting point creates a secondary crisis on top of the primary one.

Insurance and documentation primer

Most households have one major preparedness gap that isn't gear-related: their insurance does not cover their most likely disaster. The pattern is consistent across regions.

Flood insurance is almost always separate from homeowner's coverage. The National Flood Insurance Program (NFIP) provides the coverage; your homeowner's carrier does not. NFIP has a 30-day waiting period from purchase to coverage — you cannot buy it when a storm is approaching. Verify enrollment annually before your region's flood season.

Earthquake insurance is separate in earthquake-prone states. Standard HO-3 policies exclude earthquake damage. California Earthquake Authority policies, and separate earthquake endorsements in Oregon, Washington, and other exposed states, fill the gap.

Wildfire coverage is failing in WUI areas. If your property is in a California, Colorado, Oregon, or Washington WUI zone, verify that your carrier has not non-renewed your policy. The FAIR Plan is available as a last resort but provides ACV (not RCV) coverage with lower per-occurrence limits.

ACV versus RCV matters significantly. Actual Cash Value (ACV) pays what your property is worth at the time of loss, after depreciation. Replacement Cost Value (RCV) pays what it costs to replace it. The difference on a 15-year-old roof can be $15,000–$40,000 out-of-pocket. Verify your policy type before a loss event, not after.

The document binder is the recovery tool. Photographs of every room, serial numbers of major appliances and electronics, recent receipts for high-value items, and copies of all insurance declarations pages stored off-site (or in cloud backup) are what FEMA and your insurer use to validate your claim. See Post-disaster recovery for the full documentation and claims process.

Evacuation route prep (every region)

Regional threat profiles differ. The evacuation checklist does not.

  • Map primary and backup routes now. Know at least two ways out of your neighborhood and two destinations — one local (relative's or friend's home), one distant (hotel corridor 100+ miles / 160+ km from your threat zone).
  • Practice fuel discipline. Keep your vehicle above half a tank during threat season. In a mass evacuation, stations run dry within hours. A full tank at the start means you reach your destination without stopping.
  • Stage your go-bag. A packed bag by the door eliminates decision paralysis at departure. See Bug-out planning for a disciplined bag loadout.
  • Arrange an out-of-area contact. Local cell infrastructure fails during regional emergencies. An out-of-area contact can relay information between household members when local calls fail.
  • Name two family meeting points. One near home (if you cannot return), one further out (if your neighborhood is inaccessible). Everyone in the household knows both.

See Evacuation planning for the full departure-decision framework including contraflow awareness and timing windows by threat type.

Field note

The most common failure mode in regional threat preparation is not ignorance of the threat — it's treating the top threat as the only threat. Gulf Coast families who've done thorough hurricane preparation often have no plan for the winter outage that follows a February cold snap, or the tornado embedded in the outer bands of a tropical system. Run your regional top-5 list as a checklist: "do I have a plan for each of these five scenarios?" and fill gaps by scenario, not just by season.

Your single next step: Find your region above, identify the top threat you have not yet prepared for, and follow the cross-link to its Foundation depth page. One gap closed is more valuable than five gaps acknowledged.