Windham County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Windham County: 0.
2. Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.

Storm Prediction Center severe weather database, 1950 to 2025.

Every storm within 100 miles

1. Tropical storms and hurricanes (34 kt or more, still tropical) at closest approach. Post-tropical remnants with gale-force winds are listed but not counted. Direct: track within 50 miles; near: within 100 miles. Distance is measured to the county boundary for counties and to the city centre for cities, using positions interpolated hourly between HURDAT2 fixes.

National Hurricane Center HURDAT2, 1851 to 2025.

Smoke overhead

1. A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.

NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.

Claims by ZIP code

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.

River crests

River gauges

1. Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.

NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.

1. The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.

NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.

Every earthquake of magnitude 4 or more within 50 miles

1. Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the county boundary (or inside the county).
2. Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).

USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.

Mapped landslides

Mapped by VT GS (97), NASA (4).

1. Landslides mapped in the USGS compilation of landslide inventories across the United States (version 3.0, 2025), rated probable or better. The compilation joins inventories made by federal and state agencies for different purposes and areas, so the number mapped in a county reflects how closely it has been surveyed as much as how often its slopes fail. An area with few records may simply not have been mapped. Deaths are as recorded in the inventories; a slide listed in two inventories is counted once.

USGS Landslide Inventories across the United States, version 3.0, retrieved October 27, 2026.

More event types since 1996

Costliest events since 1996

1. Jun 13, 1996Flash Flood$1.0 million
   National Weather Service narrative

   A very moist and unstable atmosphere remained over Vermont on June 13. This produced a second straight day of torrential rains from training thunderstorms in the Grafton area, which resulted in disastrous flash flooding. The governor declared Grafton a disaster area and the Vermont National Guard was called in to assist in repairing roads. Grafton was completely isolated with all roads made impassable by washouts. Routes 35 and 121 were washed out in several sections. The Saxtons River reached its third highest stage. A 250 pound propane gas tank was washed away. Several bridges were severely damaged. Fourteen homes were affected by the flooding with three sustaining severe…

2. Jul 29, 2021Flash Flood$1.0 million
   National Weather Service narrative

   The Town of Rockingham suffered significant damage to roads and infrastructure due to flash flooding. Numerous roads were closed around town including Ski Bowl, Leach, Rockingham Hill, Hartley Hill, Pleasant Valley, Paradise, Hall Bridge, Corey Hill and Darby Hill. Residential damage was also reported. The Laurel Avenue-Hyde Hill neighborhood in Bellows Falls was blocked by flood debris, sending several feet of water into the area, leaving behind lots of mud.

3. Jul 29, 2021Flash Flood$1.0 million
   National Weather Service narrative

   The Town of Putney suffered major impact due to flash flooding. Numerous roads were closed throughout the town with Putney Mountain, Holland Hill, Pine Banks and River Road the hardest hit. A culvert collapsed on Putney Mountain Road with additional areas along the road washed out. A large section of River Road was washed away. Approximately 300 individuals were reported isolated individuals due to main road washouts. The Putney General Store on Kimball Hill reported damage due to flooding.

4. Mar 31, 1997Winter Storm, Windham$750,000
   National Weather Service narrative

   On March 31 and April 1, a classic late season nor'easter tracked from the Chesapeake Bay area northeast to central coastal New Jersey then slowly out to sea. This system produced rain across Bennington and Windham Counties during the morning hours of March 31. The rain changed to heavy wet snow by early afternoon. Snowfall amounts were highly elevation dependent. Some specific snowfall totals included: 12 inches at Shaftsbury and 13 inches at Peru in Bennington County and 23 inches at West Wardsboro and 12 inches at Grafton in Windham County. The wet snow brought down many trees and power lines causing widespread power outages and road closures. Some areas remained without power…

5. Jul 29, 2021Flash Flood$600,000
   National Weather Service narrative

   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 and gravel and debris was deposited against the foundation and flood water gouged a new riverbed next to the house, where a large culvert had been. Farther up the road, severe washouts resulted in one of two cases of cars to end up in a massive ditch. An out-of-state driver suffered a concussion after ending up in a gouged-out ditch along a portion of Orchard Hill Road.

6. Jul 10, 2023Flash Flood$500,000
   National Weather Service narrative

   The combination of heavy rainfall and the West River rising over its banks has led to flash flooding around the Town of Londonderry. Parts of town were evacuated and many of its highways (Vermont Routes 11 and 100) and local roads were impassable.

7. Jul 10, 2023Flood$500,000
   National Weather Service narrative

   The combination of heavy rainfall and the West River rising over its banks has led to continued flooding around the Town of Londonderry. Parts of town were evacuated and many of its highways (Vermont Route 11 and 100) and local roads were impassable.

8. Sep 16, 1999Flash Flood$300,000
   National Weather Service narrative

   The remnants of Hurricane Floyd moved up the eastern seaboard on September 16 and during the early hours on September 17. The storm brought both high winds and heavy rainfall to Southern Vermont , which included a large swath of 3 to 6 inch amounts. Specific rainfall amounts included 2.91 inches in Bennington, 3.89 inches in Sunderland, 4.54 inches at Peru and 5.70 inches at Brattleboro. The rain produced significant flooding across the region, which proved destructive. Many smaller tributaries reached or exceeded bankfull. Water form the Millbrook in Weathersfield washed away a portion of State Route 5. The World's Fair in Tunbridge was cancelled for the first time in many years.…

9. Jul 29, 2021Flood$300,000
   National Weather Service narrative

   The Town of Brattleboro suffered minor impact due to flooding. There were numerous locations of minor roadway washouts across the town. Some residential damage was also reported.

10. Jul 17, 2021Flash Flood$300,000
    National Weather Service narrative

    Multiple roads were damaged due to flooding in West Brattleboro.

1. Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.

NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.

All-time high

104°FJul 3, 1911

All-time low

−35°FFeb 20, 1936

Warmest night

76°FSep 3, 1898

Coldest day

−5°FDec 30, 1933

Wettest day

8.64 inOct 9, 2005

Snowiest day

24.9 inFeb 6, 2001

Hottest year

1949mean 49.7°F

Coldest year

1904mean 42.3°F

Wettest year

200559.17 in

Driest year

189427.12 in

Snowiest season

99.6 in1966-67

Station Keene (USC00274399), 511 ft elevation, 15.4 miles from the population centre. Daily records from 1893 to October 27, 2026; 95.5% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.

NOAA NCEI Global Historical Climatology Network Daily.

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.

Neighbouring counties

• Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
• Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
• Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
• Storm events NOAA NCEI Storm Events Database, through 2026.
• Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
• Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
• Weather records NOAA NCEI Global Historical Climatology Network Daily, station USC00274399.
• River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
• Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
• Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
• Landslides USGS Landslide Inventories across the United States, version 3.0 (2025).
• Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.

Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.