Kusilvak Census Area, Alaska
Census Area storm and disaster record · FIPS 02158 · population 8,356 · 17,078 sq mi
NOAA's Storm Events Database holds 486 records for Kusilvak Census Area, Alaska from 1950 through June 30, 2026, on 348 days; the most frequent are winter storm records (360 records). 486 of them are forecast-zone records, which the National Weather Service files once per zone: a county covered by several zones receives each one, so a single storm can add several records on the same day. The deadliest single record is the December 24, 2015 winter weather, filed for the forecast zone Kuskokwim Delta, which covers the county: 1 death. FEMA has issued 11 declarations naming the county since 1989, 9 of them for natural hazards; the latest for a natural hazard was “Severe Storms, Flooding, and Remnants of Typhoon Halong” on October 22, 2025.
The record, 1950 to 2026
Storm records filed for the county each year (2026 to June 30, 2026). Before 1996 NOAA recorded only tornadoes (from 1950), thunderstorm wind and hail (from 1955).
- recorded, no damage figure
- under $100,000
- $100,000 or more
- $1 million or more
- $10 million or more, or a death
- $100 million or more, or 10 deaths
- a year's colour: its recorded damage or deaths
- a year with a death
- 1955: wind and hail recorded from 1955
- 1996: all 48 event types from 1996
- Storm records
- 486on 348 days, 1950 to June 30, 2026
- Deaths recorded
- 31 injuries
- Damage, 2025 dollars
- $13Mas filed (scale steps before 1993)
- FEMA declarations
- 11latest 2025
Source: NOAA NCEI Storm Events Database, records through June 30, 2026 (file revision 20260918); damage converted to 2025 dollars with the BLS CPI-U. Search the record at NCEI. BLS consumer price index.
What hazards hit Kusilvak Census Area most?
The most frequent records are winter storm records: 360 since 2001. 43% of its winter storm records since 2001 fell in February and March. The rank column places the county among Alaska's counties by days with a record per 1,000 square miles of land over each hazard's complete period.
| Hazard | Records | Days | First, last | Killed | Injured | Damage | Rank in state |
|---|---|---|---|---|---|---|---|
| Winter storms | 360 | 269 | 2001-2026 | 3 | 1 | $275K | 15 of 29 |
| High wind and dust storms | 60 | 53 | 2000-2025 | 0 | 0 | $358K | 21 of 29 |
| Floods | 41 | 33 | 2001-2025 | 0 | 0 | $4.7M | 5 of 29 |
| Hurricanes and tropical storms | 11 | 8 | 2003-2022 | 0 | 0 | $7.9M | 2 of 29 |
| Extreme cold | 7 | 7 | 2012-2022 | 0 | 0 | – | 17 of 29 |
| Rip currents and high surf | 5 | 5 | 2014-2017 | 0 | 0 | – | 5 of 29 |
| Wildfires | 2 | 2 | 2022-2022 | 0 | 0 | – | 22 of 29 |
Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.
When was the last damaging storm in Kusilvak Census Area?
The most recent record with damage, injuries or deaths is the October 12, 2025 coastal flood ($100,000 in damage in 2025 dollars).
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-04-21 | BlizzardKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | – | |
| 2026-04-18 | Winter StormKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | – | |
| 2026-03-07 | BlizzardKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | – | |
| 2026-02-23 | Winter StormKusilvak Census Area · forecast zone Lower Yukon River | 0 | 0 | – | |
| 2026-02-16 | BlizzardKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | – | |
| 2026-02-13 | BlizzardKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | – | |
| 2026-02-10 | BlizzardKusilvak Census Area · forecast zone Lower Yukon River | 0 | 0 | – | |
| 2026-02-10 | BlizzardKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | – | |
| 2026-01-04 | BlizzardKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | – | |
| 2025-10-12 | Coastal FloodKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | $100K | |
| 2025-10-11 | High WindKusilvak Census Area · forecast zone Lower Yukon River | 75 kt wind | 0 | 0 | $100K |
| 2025-10-11 | High WindKusilvak Census Area · forecast zone Yukon Delta Coast | 93 kt wind | 0 | 0 | $100K |
Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.
The deadliest and costliest records
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2015-12-24 | Winter WeatherBethel Census Area and Kusilvak Census Area · forecast zone Kuskokwim Delta A 24 YOM perished after his snowmobile went through river ice during a storm producing near-zero visibility. The man died from exposure and was one 4 family members enroute from the village of Kwethluk to Russian Mission. Rescuers found two survivors and the body of the victim at the location on the 26th. A third ... | 1 | 0 | – | |
| 2012-02-01 | BlizzardBethel Census Area and Kusilvak Census Area · forecast zone Kuskokwim Delta A large intense north Pacific storm moved across Kodiak Island into the lower Cook Inlet and south central region of Alaska the afternoon of February 1st. This storm produced high wind and blizzard conditions from the Alaska Peninsula to the Kuskokwim Delta east across the Kenai Peninsula into Prince William Sound. ... | 1 | 0 | – | |
| 2011-01-23 | BlizzardBethel Census Area and Kusilvak Census Area · forecast zone Kuskokwim Delta A strong storm produced strong wind and snow across the Pribilof Islands and Kuskokwim Delta resulting in blizzard conditions. | 1 | 0 | – | |
| 2009-02-12 | Winter StormKusilvak Census Area and 2 more · forecast zone Ern Norton Sound Nulato Hills On the morning of the 12th a 963 mb low in the western Bering Sea tracked slowly northeast and weakened to 996 mb east of Saint Lawrence Island through the evening of the 13th. The storm moved inland and filled on the 14th. The storm brought high winds, heavy snow, and blizzard conditions to much of the west coast. ... | 0 | 1 | – |
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2004-10-19 | Storm Surge/TideKusilvak Census Area and 2 more · forecast zone Ern Norton Sound Nulato Hills | 0 | 0 | $7.3M | |
| 2002-05-13 | FloodBethel Census Area and Kusilvak Census Area · forecast zone Kuskokwim Delta | 0 | 0 | $3.5M | |
| 2005-05-14 | FloodKusilvak Census Area · forecast zone Yukon Delta | 0 | 0 | $756K | |
| 2004-10-18 | Storm Surge/TideKusilvak Census Area · forecast zone Yukon Delta | 0 | 0 | $312K | |
| 2009-02-25 | BlizzardBethel Census Area and Kusilvak Census Area · forecast zone Kuskokwim Delta | 0 | 0 | $275K | |
| 2025-10-11 | High WindKusilvak Census Area · forecast zone Lower Yukon River | 75 kt wind | 0 | 0 | $100K |
| 2025-10-12 | Coastal FloodKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | $100K | |
| 2025-10-07 | Coastal FloodKusilvak Census Area · forecast zone Yukon Delta Coast | 0 | 0 | $5K |
Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.
Is it getting more frequent?
Records per decade for Kusilvak Census Area's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).
| Hazard | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020-26 |
|---|---|---|---|---|---|---|---|---|
| Winter storms | – | – | – | – | 0 | 159 | 122 | 79 |
| High wind and dust storms | – | – | – | – | 0 | 35 | 12 | 13 |
| Floods | – | – | – | – | 0 | 15 | 18 | 8 |
| Hurricanes and tropical storms | – | – | – | – | 0 | 10 | 0 | 1 |
Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).
What time of year?
43% of its winter storm records since 2001 fell in February and March. The two busiest months are in violet.
The values, month by month
Jan 67 · Feb 105 · Mar 64 · Apr 52 · May 5 · Jun 2 · Jul 2 · Aug 3 · Sep 15 · Oct 21 · Nov 70 · Dec 80 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began.
Federal disaster declarations for Kusilvak Census Area
FEMA's register lists 11 declarations that include Kusilvak Census Area: 10 major disasters, one emergency and 0 fire management assistance declarations. Most were for flood (4) and severe storm (4).
| Declared | Number | Type | Title |
|---|---|---|---|
| 2025-10-22 | DR-4893 | Flood | Severe Storms, Flooding, and Remnants of Typhoon Halong |
| 2023-08-23 | DR-4730 | Flood | Flooding |
| 2022-09-23 | DR-4672 | Severe Storm | Severe Storm, Flooding, and Landslides |
| 2020-04-09 | DR-4533 | Biological | Covid-19 Pandemic |
| 2020-03-13 | EM-3446 | Biological | Covid-19 |
| 2005-12-09 | DR-1618 | Severe Storm | Severe Fall Storm, Tidal Surges, and Flooding |
| 2004-11-15 | DR-1571 | Severe Storm | Severe Winter Storm, Tidal Surges and Flooding |
| 2002-06-26 | DR-1423 | Flood | Flooding |
| 2000-02-17 | DR-1316 | Severe Storm | Severe Winter Storms and Avalanches |
| 1989-06-10 | DR-832 | Flood | Flooding |
| 1989-05-10 | DR-826 | Freezing | Severe Freezing |
Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.
FEMA's modeled risk for Kusilvak Census Area
FEMA's National Risk Index rates Kusilvak Census Area Relatively Low overall, with an expected annual loss of $10.9 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.
| Hazard | Risk rating | Expected annual loss | Modeled frequency |
|---|---|---|---|
| Cold Wave | Relatively High | $11M | 3.8 a year (modeled) |
| Winter Weather | Relatively Moderate | $150K | 28 a year (modeled) |
| Landslide | Relatively Low | $13K | once in about 15 years (modeled) |
| Wildfire | Very Low | $21K | once in about 1,080 years (modeled) |
| Volcanic Activity | Very Low | $2 | once in about 5,000 years (modeled) |
| Earthquake | Very Low | $24K | once in about 368 years (modeled) |
| Avalanche | Very Low | $14 | once in about 100 years (modeled) |
| Ice Storm | Very Low | $1K | once in about 67 years (modeled) |
Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.
Counties that share a border with Kusilvak Census Area
Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.
Next
- Winter storms in AlaskaThe state's winter storm records, by county, year and month
- The Alaska recordEvery hazard in the state, its deadliest events and its federal declarations
- FEMA's risk rating for each hazard in Kusilvak Census AreaThe hazard risk calculator: 18 hazards beside the county's record
- Download Kusilvak Census Area's FEMA declarations (CSV)11 rows: every declaration that named the county, for your own analysis