Windham County, Vermont
County storm and disaster record · FIPS 50025 · population 45,853 · 786 sq mi
NOAA's Storm Events Database holds 1,080 records for Windham County, Vermont from 1950 through June 30, 2026, on 603 days; the most frequent are winter storm records (415 records). 735 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 August 28, 2011 flash flood: 1 death. FEMA has issued 24 declarations naming the county since 1969, 22 of them for natural hazards; the latest for a natural hazard was “Tropical Depression Debby” on August 8, 2024.
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
- 1,080on 603 days, 1950 to June 30, 2026
- Deaths recorded
- 18 injuries
- Damage, 2025 dollars
- $16Mas filed (scale steps before 1993)
- Tornadoes
- 5strongest F2
- FEMA declarations
- 24latest 2024
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 Windham County most?
The most frequent records are winter storm records: 415 since 1996. 48% of its winter storm records since 1996 fell in January and February. The rank column places the county among Vermont'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 | 415 | 251 | 1996-2026 | 0 | 0 | $1.7M | 11 of 13 |
| Severe thunderstorm wind | 183 | 105 | 1957-2026 | 0 | 0 | $1.1M | 8 of 13 |
| High wind and dust storms | 136 | 85 | 1996-2026 | 0 | 0 | $759K | 4 of 13 |
| Floods | 128 | 54 | 1996-2025 | 1 | 1 | $11M | 8 of 13 |
| Extreme cold | 116 | 71 | 2000-2026 | 0 | 0 | – | 2 of 13 |
| Heat | 39 | 37 | 1998-2026 | 0 | 0 | – | 1 of 13 |
| Hail | 34 | 15 | 1958-2023 | 0 | 0 | $100K | 13 of 13 |
| Drought | 15 | 8 | 1999-2025 | 0 | 0 | – | 1 of 13 |
| Tornadoes | 5 | 5 | 1957-2019 | 0 | 0 | $789K | 5 of 13 |
| Lightning | 4 | 4 | 2004-2019 | 0 | 7 | $373K | 11 of 13 |
| Heavy rain | 2 | 2 | 2008-2017 | 0 | 0 | – | 12 of 13 |
| Hurricanes and tropical storms | 2 | 1 | 2011-2011 | 0 | 0 | – | 2 of 13 |
| Wildfires | 1 | 1 | 2002-2002 | 0 | 0 | – | 2 of 13 |
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.
How many tornadoes has Windham County had?
NOAA records 5 tornadoes in Windham County from 1957 to 2019, the strongest rated F2, with 0 deaths and 0 injuries recorded in the county. That is 5th of 13 Vermont counties by days with tornadoes per 1,000 square miles since 1950. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.
Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 5 tornadoes whose track touched Windham County since 1950 (NOAA's county records number 5, the same count); along their whole tracks they killed 0 people.
Map of the strongest tornado tracks in Vermont.
Every tornado record filed for Windham County (5)
| Date | Place | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2019-08-21 | Windham County | EF1 0.75 mi x 350 yd | 0 | 0 | – |
| 2003-07-21 | Stratton, Windham County | F1 2 mi x 100 yd | 0 | 0 | $16K |
| 2002-06-05 | Windham County | F2 0.1 mi x 150 yd | 0 | 0 | $123K |
| 1988-07-14 | Windham County | F0 0.2 mi x 10 yd | 0 | 0 | $250K step |
| 1957-07-05 | Windham County | F0 | 0 | 0 | $3K step |
A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.
Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.
When was the last damaging storm in Windham County?
The most recent record with damage, injuries or deaths is the June 6, 2025 flash flood ($1,000 in damage in 2025 dollars).
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 2026-06-18 | Thunderstorm WindEast Putney, Windham County | 50 kt wind | 0 | 0 | – |
| 2026-06-18 | Thunderstorm WindWestminster West, Windham County | 50 kt wind | 0 | 0 | – |
| 2026-06-18 | Thunderstorm WindWest Dummerston, Windham County | 50 kt wind | 0 | 0 | – |
| 2026-06-12 | HeatWindham County · forecast zone Eastern Windham | 0 | 0 | – | |
| 2026-06-11 | HeatWindham County · forecast zone Eastern Windham | 0 | 0 | – | |
| 2026-04-14 | Thunderstorm WindVernon, Windham County | 50 kt wind | 0 | 0 | – |
| 2026-04-14 | Thunderstorm WindGuilford, Windham County | 50 kt wind | 0 | 0 | – |
| 2026-04-14 | Thunderstorm WindBrattleboro, Windham County | 50 kt wind | 0 | 0 | – |
| 2026-03-16 | Strong WindWindham County · forecast zone Western Windham | 37 kt wind | 0 | 0 | – |
| 2026-03-16 | Strong WindWindham County · forecast zone Eastern Windham | 37 kt wind | 0 | 0 | – |
| 2026-02-22 | Winter WeatherWindham County · forecast zone Eastern Windham | 0 | 0 | – | |
| 2026-02-22 | Winter WeatherWindham County · forecast zone Western Windham | 0 | 0 | – |
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 |
|---|---|---|---|---|---|
| 2011-08-28 | Flash FloodWhitingham, Windham County Route 100 in Windham County was closed due to flooding and wash outs. Portions of Route 100 remained closed after the flood waters receded due to significant damage. The North Branch Deerfield River runs along a portion of Route 100 from the Mount Snow area to Wilmington. Along Dover Road, one house was destroyed and ... | 1 | 0 | – | |
| 2014-07-02 | LightningGuilford, Windham County Seven fire fighters responding to a structure fire were struck by lightning during a thunderstorm in Guilford. Although all seven were sent to a hospital with minor injuries, no serious injuries were reported. | 0 | 7 | – | |
| 2021-07-29 | Flash FloodAthens, Windham County The Town of Westminster suffered major impact due to flash flooding. Roads around the town were disintegrated making them impassable along with at least one culvert washed away. There were reports of mudslides and standing water on other roads around the town. One home off Henwood Hill Road is uninhabitable when rock ... | 0 | 1 | $653K |
| Date | Record | Character | Killed | Injured | Damage |
|---|---|---|---|---|---|
| 1996-06-13 | Flash FloodGrafton, Windham County | 0 | 0 | $1.9M | |
| 2021-07-29 | Flash FloodNewfane, Windham County | 0 | 0 | $1.1M | |
| 2021-07-29 | Flash FloodAthens, Windham County | 0 | 1 | $653K | |
| 1999-09-16 | Flash FloodCountywide, Windham County | 0 | 0 | $531K | |
| 2023-07-10 | FloodLondonderry, Windham County | 0 | 0 | $484K | |
| 2003-08-03 | Flash FloodGrafton, Windham County | 0 | 0 | $401K | |
| 1996-01-19 | FloodWindham County · forecast zone Western Windham | 0 | 0 | $376K | |
| 2007-08-03 | LightningBrattleboro, Windham County | 0 | 0 | $356K |
Before 1993 NOAA filed damage by category, not amount, so the list above starts in 1993. The highest category filed here before then (entered as $250K, in the dollars of the day) holds: July 14, 1988 (tornado, Windham County).
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 Windham County'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 | – | – | – | – | 29 | 121 | 151 | 114 |
| Severe thunderstorm wind | 1 | 6 | 1 | 16 | 29 | 29 | 59 | 42 |
| High wind and dust storms | – | – | – | – | 11 | 23 | 47 | 55 |
| Floods | – | – | – | – | 8 | 25 | 40 | 55 |
| Extreme cold | – | – | – | – | 0 | 29 | 56 | 31 |
| Heat | – | – | – | – | 4 | 1 | 11 | 23 |
Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).
What time of year?
48% of its winter storm records since 1996 fell in January and February. The two busiest months are in violet.
The values, month by month
Jan 174 · Feb 150 · Mar 97 · Apr 37 · May 67 · Jun 84 · Jul 122 · Aug 59 · Sep 33 · Oct 45 · Nov 46 · Dec 166 (records).
Source: NOAA NCEI Storm Events Database, records by the month they began.
Federal disaster declarations for Windham County
FEMA's register lists 24 declarations that include Windham County: 18 major disasters, 6 emergencies and 0 fire management assistance declarations. Most were for severe storm (8) and flood (8).
| Declared | Number | Type | Title |
|---|---|---|---|
| 2024-08-08 | EM-3609 | Tropical Storm | Tropical Depression Debby |
| 2024-03-02 | DR-4762 | Severe Storm | Severe Storm and Flooding |
| 2023-07-14 | DR-4720 | Flood | Severe Storms, Flooding, Landslides, and Mudslides |
| 2023-07-10 | EM-3595 | Flood | Flooding |
| 2021-09-29 | DR-4621 | Flood | Severe Storm and Flooding |
| 2021-08-22 | EM-3567 | Hurricane | Tropical Storm Henri |
| 2020-04-08 | DR-4532 | Biological | Covid-19 Pandemic |
| 2020-03-13 | EM-3437 | Biological | Covid-19 |
| 2018-01-02 | DR-4356 | Severe Storm | Severe Storm and Flooding |
| 2011-11-08 | DR-4043 | Severe Storm | Severe Storms and Flooding |
| 2011-09-01 | DR-4022 | Hurricane | Tropical Storm Irene |
| 2011-08-29 | EM-3338 | Hurricane | Hurricane Irene |
| 2009-01-14 | DR-1816 | Severe Ice Storm | Severe Winter Storm |
| 2007-05-04 | DR-1698 | Severe Storm | Severe Storms and Flooding |
| 2004-09-23 | DR-1559 | Severe Storm | Severe Storms and Flooding |
| 2003-09-12 | DR-1488 | Severe Storm | Severe Storms and Flooding |
| 2001-04-10 | EM-3167 | Snowstorm | Snow |
| 2000-07-27 | DR-1336 | Severe Storm | Severe Storms and Flooding |
| 1999-11-10 | DR-1307 | Severe Storm | Tropical Storm Floyd |
| 1996-06-27 | DR-1124 | Flood | Extreme Rainfall and Flooding |
| 1996-02-13 | DR-1101 | Flood | Ice Jams and Flooding |
| 1976-08-05 | DR-518 | Flood | Severe Storms, High Winds & Flooding |
| 1973-07-06 | DR-397 | Flood | Severe Storms, Flooding, & Landslides |
| 1969-08-30 | DR-277 | Flood | Severe Storms & Flooding |
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.
How many floods has Windham County had?
NOAA's Storm Events Database holds 128 flood or flash flood records for Windham County from 1996 to 2025, on 54 days, with 1 death. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Windham County ranks 725th of 2,942 U.S. counties.
| Storm | Began | Records | Deaths in the county |
|---|---|---|---|
| Hurricane Irene | 2011-08-28 | 1 | 1 |
| Tropical Storm Floyd | 1999-09-16 | 1 | 0 |
The National Flood Insurance Program has paid $10.9 million on 312 claims filed in Windham County; the most in one year was 180 in 2011. Claims count insured losses only: uninsured flood damage is not in this file.
The values, year by year
1978: 2 · 1979: 1 · 1980: 2 · 1981: 4 · 1982: 3 · 1983: 2 · 1984: 4 · 1986: 1 · 1987: 18 · 1990: 4 · 1992: 1 · 1996: 5 · 1998: 1 · 1999: 2 · 2000: 9 · 2001: 1 · 2003: 2 · 2004: 3 · 2005: 8 · 2007: 1 · 2008: 3 · 2009: 2 · 2010: 1 · 2011: 180 · 2012: 1 · 2013: 1 · 2014: 2 · 2015: 1 · 2017: 1 · 2018: 1 · 2019: 4 · 2021: 14 · 2023: 25 · 2024: 1 · 2026: 1; the other years: 0.
Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.
FEMA's modeled risk for Windham County
FEMA's National Risk Index rates Windham County Relatively Low overall, with an expected annual loss of $20.3 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 |
|---|---|---|---|
| Ice Storm | Relatively Moderate | $262K | 1.2 a year (modeled) |
| Cold Wave | Relatively Moderate | $2.1M | 3.8 a year (modeled) |
| Lightning | Relatively Moderate | $369K | 23 a year (modeled) |
| Landslide | Relatively Low | $33K | 1.6 a year (modeled) |
| Hurricane | Relatively Low | $987K | once in about 16 years (modeled) |
| Riverine Flooding | Relatively Low | $15M | 1.9 a year (modeled) |
| Winter Weather | Relatively Low | $66K | 23 a year (modeled) |
| Tornado | Relatively Low | $914K | once in about 7 years (modeled) |
Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.
Counties that share a border with Windham County
Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.
Next
- Tornadoes in VermontEvery Vermont tornado since 1950 and the counties with the most per square mile
- Winter storms in VermontThe state's winter storm records, by county, year and month
- The Vermont recordEvery hazard in the state, its deadliest events and its federal declarations
- FEMA's risk rating for each hazard in Windham CountyThe hazard risk calculator: 18 hazards beside the county's record
- Download Windham County's FEMA declarations (CSV)24 rows: every declaration that named the county, for your own analysis