Storm History: Boulder County, Colorado

Events

2,114

Deaths

45

Injuries

81

Damage

$2.7 billion

Episodes

1,051

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Open the live radar over Boulder County

• Avalanche, April 20, 20135 deaths · 1 event here
• Flash Flood, September 11, 20134 deaths · 5 injured · $297 million · 17 events here
• Wildfire, December 30, 20212 deaths · 12 injured · $2.0 billion · 94 kt wind · 3 events here
• Avalanche, January 1, 20062 deaths · 1 event here
• Avalanche, December 26, 20082 deaths · 1 event here
• Avalanche, February 14, 20212 deaths · 2 events here
• Avalanche, January 7, 20232 deaths · 1 event here
• High Wind, October 29, 19961 death · $5.2 million · 88 kt wind · 2 events here
• Tornado, July 12, 20001 death · F0 · 1 event here
• Winter Weather, September 4, 20041 death · 1 event here
• Avalanche, March 24, 20051 death · 1 injured · 1 event here
• Avalanche, May 20, 20051 death · 1 event here
• Avalanche, November 6, 20051 death · 1 event here
• Avalanche, December 22, 20051 death · 1 event here
• High Wind, December 31, 20111 death · 109 kt wind · 4 events here
• Avalanche, January 22, 20121 death · 1 event here
• Avalanche, March 17, 20131 death · 1 injured · 1 event here
• Avalanche, February 10, 20141 death · 1 event here
• Avalanche, December 31, 20141 death · 1 event here
• High Wind, April 17, 20181 death · 89 kt wind · 3 events here

• Wildfire, December 30, 20212 deaths · 12 injured · $2.0 billion · 94 kt wind · 3 events here
• Flash Flood, September 11, 20134 deaths · 5 injured · $297 million · 17 events here
• Wildfire, September 6, 2010$217 million · 1 event here
• Wildfire, October 1, 2020$92 million · 1 event here
• Wildfire, October 17, 2020$37 million · 1 event here
• Blizzard, March 17, 2003$31 million · 4 events here
• High Wind, April 8, 1999$7.2 million · 100 kt wind · 2 events here
• High Wind, December 29, 2008$7.0 million · 96 kt wind · 2 events here
• High Wind, October 29, 19961 death · $5.2 million · 88 kt wind · 2 events here
• Hail, July 12, 1996$1.0 million · 1.25 in hail · 1 event here
• High Wind, January 7, 20093 injured · $1.0 million · 93 kt wind · 3 events here
• High Wind, October 29, 2003$979,000 · 70 kt wind · 2 events here
• High Wind, December 20, 20043 injured · $400,000 · 88 kt wind · 2 events here
• Flash Flood, July 13, 2011$320,000 · 4.5 in hail · 2 events here
• Flash Flood, July 17, 2011$300,000 · 1 event here
• High Wind, December 17, 2025$300,000 · 108 kt wind · 4 events here
• Tornado, June 5, 1988$250,000 · F2 · 1 event here
• High Wind, January 3, 19963 injured · $150,000 · 2 events here
• High Wind, May 20, 2001$112,000 · 72 kt wind · 1 event here
• Flash Flood, May 8, 2015$110,000 · 1 event here

• Flash Flood, July 13, 2011$320,000 · 4.5 in hail · 2 events here
• Flash Flood, June 18, 20183 in hail · 24 events here
• Flash Flood, August 6, 2009$5,000 · 3 in hail · 1 event here
• Hail, May 25, 19623 in hail · 1 event here
• Hail, June 17, 20252.75 in hail · 5 events here
• Hail, May 30, 20242.75 in hail · 6 events here
• Hail, June 17, 20092.75 in hail · 4 events here
• Hail, May 15, 19912.75 in hail · 1 event here
• Hail, June 17, 19792.75 in hail · 1 event here
• Hail, June 10, 19692.75 in hail · 1 event here
• Hail, June 21, 19642.75 in hail · 1 event here
• Hail, May 9, 20232.5 in hail · 4 events here
• Flash Flood, July 27, 20222.5 in hail · 1 event here
• Hail, July 5, 20192.5 in hail · 24 events here
• Hail, June 24, 20062.5 in hail · 8 events here

• Tornado, June 13, 1977F3 · 2 events here
• Tornado, May 22, 2008EF3 · 6 events here
• Tornado, June 4, 2015$15,000 · EF3 · 7 events here
• Tornado, May 17, 1978$3,000 · F2 · 1 event here
• Tornado, October 15, 1980$25,000 · F2 · 2 events here
• Tornado, June 25, 1982F2 · 1 event here
• Tornado, June 5, 1988$250,000 · F2 · 1 event here
• Tornado, October 5, 1994F2 · 1 event here
• Tornado, May 10, 2004F2 · 1 event here
• Tornado, June 15, 20091 injured · $20,000 · EF2 · 1 event here
• Tornado, September 11, 2019EF2 · 9 events here
• Tornado, June 17, 2023EF2 · 1 event here
• Tornado, May 18, 2025EF2 · 2 events here

Every tornado in Boulder County, with its track

• Winter Storm, May 17, 20262 events here
• Winter Storm, May 5, 20264 events here
• Winter Weather, April 14, 20262 events here
• High Wind, March 16, 202686 kt wind · 1 event here
• High Wind, March 14, 202696 kt wind · 1 event here
• High Wind, March 12, 202682 kt wind · 3 events here
• Winter Storm, March 5, 20264 events here
• Wildfire, February 24, 202676 kt wind · 1 event here
• Heavy Snow, February 24, 20262 events here
• Wildfire, February 17, 202660 kt wind · 1 event here
• Wildfire, January 15, 202679 kt wind · 1 event here
• High Wind, December 19, 202597 kt wind · 3 events here
• High Wind, December 17, 2025$300,000 · 108 kt wind · 4 events here
• High Wind, December 11, 202578 kt wind · 3 events here
• High Wind, December 9, 202582 kt wind · 3 events here
• Winter Storm, December 5, 20252 events here
• Winter Weather, December 3, 20252 events here
• Hail, August 14, 20251 in hail · 3 events here
• Tornado, August 10, 20251 in hail · 5 events here
• Tornado, July 11, 20252 in hail · 4 events here
• Hail, June 17, 20252.75 in hail · 5 events here
• Tornado, May 18, 2025EF2 · 2 events here
• Winter Weather, May 6, 20252 events here
• Winter Weather, April 17, 20253 events here
• Strong Wind, March 24, 20252 events here
• High Wind, March 3, 202570 kt wind · 2 events here
• Avalanche, February 22, 20251 death · 2 events here
• Winter Storm, February 20, 20252 events here
• Winter Storm, February 16, 20252 events here
• Winter Storm, February 14, 20253 events here
• High Wind, February 2, 202583 kt wind · 4 events here
• Winter Weather, February 1, 20251 event here
• Winter Weather, January 24, 20253 events here
• Extreme Cold/Wind Chill, January 17, 20257 events here
• Winter Weather, January 10, 20252 events here
• Winter Weather, January 6, 20251 event here
• Winter Storm, January 1, 20252 events here
• High Wind, December 30, 202468 kt wind · 1 event here
• Winter Storm, December 29, 20242 events here
• Winter Storm, December 28, 20242 events here
• High Wind, December 18, 202489 kt wind · 4 events here
• Winter Weather, December 9, 20241 event here
• Winter Storm, November 26, 20244 events here
• Strong Wind, November 19, 20242 events here
• Winter Storm, November 5, 20241 event here
• Winter Storm, November 5, 20242 events here
• Winter Storm, November 3, 20243 events here
• Winter Weather, October 21, 20241 event here
• Thunderstorm Wind, September 17, 202462 kt wind · 2 events here
• Wildfire, September 16, 20241 event here
• Wildfire, August 1, 20241 death · 1 event here
• Wildfire, August 1, 20241 event here
• Wildfire, July 31, 20241 event here
• Wildfire, July 30, 20241 death · 1 event here
• Wildfire, July 29, 20241 event here
• Flash Flood, July 20, 20241.5 in hail · 2 events here
• High Wind, June 27, 202455 kt wind · 1 event here
• Thunderstorm Wind, June 7, 202461 kt wind · 1 event here
• Hail, May 30, 20242.75 in hail · 6 events here
• Hail, May 25, 20243 injured · 1 in hail · 1 event here
• Heavy Snow, May 11, 20241 event here
• High Wind, May 6, 202474 kt wind · 3 events here
• Heavy Snow, April 26, 20243 events here
• High Wind, April 15, 202457 kt wind · 2 events here
• High Wind, April 6, 202483 kt wind · 4 events here
• Winter Weather, March 23, 20244 events here
• Winter Storm, March 13, 20244 events here
• Winter Storm, March 7, 20243 events here
• Winter Storm, March 2, 20242 events here
• High Wind, February 27, 202468 kt wind · 1 event here
• Winter Weather, February 27, 20241 event here
• Winter Weather, February 16, 20241 event here
• Winter Storm, February 9, 20241 event here
• Winter Storm, February 2, 20243 events here
• Winter Storm, January 17, 202470 kt wind · 4 events here
• High Wind, January 16, 202472 kt wind · 2 events here
• Winter Storm, January 11, 20243 events here
• Winter Storm, January 9, 20242 events here
• Blizzard, December 25, 202357 kt wind · 1 event here
• Winter Weather, December 23, 20233 events here
• High Wind, December 10, 202379 kt wind · 1 event here
• Winter Weather, December 8, 20233 events here
• High Wind, December 7, 202372 kt wind · 1 event here
• Winter Storm, December 1, 202381 kt wind · 3 events here
• Winter Storm, November 23, 20232 events here
• Winter Storm, October 27, 20234 events here
• Tornado, July 31, 20231.25 in hail · 1 event here
• Tornado, June 17, 2023EF2 · 1 event here
• Hail, June 12, 20231 in hail · 2 events here
• Tornado, May 26, 20231.5 in hail · 2 events here
• Winter Storm, May 10, 20232 events here
• Hail, May 9, 20232.5 in hail · 4 events here
• Avalanche, April 29, 20231 death · 1 event here
• Winter Weather, April 27, 20231 event here
• Winter Storm, April 25, 20233 events here
• Winter Weather, April 14, 20231 event here
• Avalanche, April 11, 20231 event here
• Winter Storm, April 3, 20233 events here
• High Wind, March 31, 202378 kt wind · 2 events here
• Winter Storm, March 27, 20231 event here
• Winter Storm, March 21, 20232 events here
• Winter Weather, March 10, 20231 event here
• High Wind, February 26, 202366 kt wind · 1 event here
• Winter Storm, February 22, 20235 events here
• High Wind, February 19, 202387 kt wind · 3 events here
• Winter Storm, February 15, 20232 events here
• Winter Storm, January 29, 20233 events here
• Winter Storm, January 26, 20232 events here
• Winter Storm, January 17, 20234 events here
• Avalanche, January 7, 20232 deaths · 1 event here
• Avalanche, December 31, 20221 death · 1 event here
• Winter Storm, December 30, 20222 events here
• Winter Storm, December 28, 20222 events here
• High Wind, December 27, 202279 kt wind · 1 event here
• Avalanche, December 26, 20221 death · 1 event here
• Cold/Wind Chill, December 21, 20228 events here
• Blizzard, December 12, 20222 events here
• High Wind, December 1, 202292 kt wind · 2 events here
• Winter Weather, November 28, 20222 events here
• Winter Storm, November 17, 20223 events here
• Winter Weather, November 14, 20221 event here
• High Wind, November 4, 202273 kt wind · 1 event here
• Winter Weather, November 3, 20224 events here
• Winter Weather, October 26, 20222 events here
• High Wind, October 23, 202260 kt wind · 1 event here
• Hail, October 1, 20221.5 in hail · 2 events here
• Flash Flood, July 27, 20222.5 in hail · 1 event here
• Hail, July 26, 20221 in hail · 1 event here
• Hail, June 16, 20221.5 in hail · 1 event here
• Winter Weather, May 31, 20222 events here
• Avalanche, May 29, 20221 death · 2 injured · 1 event here
• Winter Weather, May 29, 20222 events here
• Winter Storm, May 23, 20222 events here
• Winter Storm, May 19, 20224 events here
• Winter Weather, May 3, 20222 events here
• High Wind, April 29, 202271 kt wind · 1 event here
• Winter Weather, April 24, 20221 event here
• High Wind, April 23, 202276 kt wind · 1 event here
• High Wind, April 22, 202278 kt wind · 1 event here
• Winter Weather, April 16, 20222 events here
• Winter Storm, April 11, 20222 events here
• Winter Weather, April 9, 20221 event here
• High Wind, April 4, 2022101 kt wind · 5 events here
• Winter Weather, March 29, 20222 events here
• Wildfire, March 26, 20222 events here
• Winter Storm, March 16, 20224 events here
• Winter Storm, March 8, 20223 events here
• Winter Weather, March 4, 20224 events here
• Winter Storm, February 16, 20223 events here
• Winter Weather, February 11, 20221 event here
• High Wind, February 10, 202276 kt wind · 3 events here
• Winter Storm, February 1, 20224 events here
• Winter Weather, January 24, 20222 events here
• Winter Weather, January 21, 20221 event here
• Winter Storm, January 4, 20223 events here
• High Wind, January 4, 202279 kt wind · 1 event here
• Wildfire, December 30, 20212 deaths · 12 injured · $2.0 billion · 94 kt wind · 3 events here
• Winter Storm, December 30, 20214 events here
• Winter Storm, December 23, 20211 death · 3 events here
• High Wind, December 15, 202183 kt wind · 4 events here
• Drought, December 1, 20212 events here
• High Wind, November 14, 202170 kt wind · 2 events here
• Drought, November 1, 20212 events here
• Flash Flood, July 31, 2021$10,000 · 1 event here
• Flash Flood, July 30, 2021$20,000 · 1 in hail · 1 event here
• Flash Flood, June 27, 2021$20,000 · 1 event here
• Flash Flood, June 25, 20211 in hail · 1 event here
• Hail, May 2, 20211 in hail · 1 event here
• Winter Storm, April 19, 20214 events here
• Winter Storm, April 14, 20212 events here
• Winter Storm, March 21, 20212 events here
• Blizzard, March 12, 20215 events here
• Winter Storm, February 24, 20212 events here
• Winter Weather, February 17, 20212 events here
• Avalanche, February 16, 20211 death · 1 event here
• Avalanche, February 14, 20212 deaths · 2 events here
• Winter Weather, February 11, 20211 event here
• Winter Weather, February 10, 20211 event here
• Winter Weather, February 6, 20212 events here
• Winter Storm, February 4, 20212 events here
• Winter Weather, January 17, 20212 events here
• Dust Storm, January 13, 2021101 kt wind · 3 events here
• Avalanche, December 26, 20201 death · 1 event here
• Winter Weather, December 22, 20201 event here
• High Wind, December 20, 202083 kt wind · 2 events here
• Winter Weather, November 23, 20203 events here
• High Wind, November 13, 202079 kt wind · 5 events here
• Heavy Snow, October 23, 20204 events here
• Wildfire, October 21, 20202 events here
• Wildfire, October 17, 2020$37 million · 1 event here
• High Wind, October 16, 202085 kt wind · 2 events here
• High Wind, October 14, 202090 kt wind · 1 event here
• High Wind, October 11, 202071 kt wind · 1 event here
• Wildfire, October 1, 2020$92 million · 1 event here
• Winter Weather, September 7, 20202 events here
• Wildfire, September 1, 20201 event here
• Wildfire, August 13, 20201 event here
• Hail, July 31, 20201 in hail · 1 event here
• Hail, June 8, 20201 in hail · 1 event here
• Thunderstorm Wind, June 6, 202096 kt wind · 2 events here
• Winter Storm, April 15, 20201 death · 5 events here
• Heavy Snow, April 11, 20204 events here
• Blizzard, March 19, 20202 events here
• Winter Storm, February 15, 20202 events here
• Winter Storm, February 6, 20204 events here
• Winter Weather, February 3, 20204 events here
• High Wind, January 17, 202070 kt wind · 2 events here
• High Wind, January 6, 202087 kt wind · 1 event here
• High Wind, January 6, 202086 kt wind · 1 event here
• High Wind, January 4, 202073 kt wind · 2 events here
• Winter Weather, January 1, 20202 events here
• Winter Storm, December 12, 20192 events here
• Avalanche, December 8, 20191 death · 1 event here
• High Wind, November 29, 201996 kt wind · 5 events here
• Blizzard, November 25, 20194 events here
• Winter Storm, October 29, 20192 events here
• Winter Weather, October 27, 20194 events here
• Winter Storm, October 23, 20192 events here
• Winter Storm, October 19, 201971 kt wind · 3 events here
• Winter Weather, October 9, 20194 events here
• Tornado, September 11, 2019EF2 · 9 events here
• Hail, September 10, 20192 in hail · 1 event here
• Hail, August 13, 20191.75 in hail · 1 event here
• Hail, July 15, 20191.5 in hail · 1 event here
• Lightning, July 14, 20191 death · 1 injured · 1 event here
• Hail, July 7, 20190.75 in hail · 2 events here
• Hail, July 5, 20192.5 in hail · 24 events here
• Hail, July 1, 20191.25 in hail · 1 event here
• Thunderstorm Wind, June 28, 201950 kt wind · 1 event here
• Tornado, June 17, 2019EF0 · 1 event here
• Tornado, June 8, 2019EF0 · 4 events here
• Winter Storm, May 28, 20192 events here
• Winter Storm, April 29, 20193 events here
• Winter Storm, April 10, 20194 events here
• Winter Storm, March 6, 20193 events here
• Winter Storm, March 1, 20195 events here
• Heavy Snow, February 22, 20191 event here
• High Wind, February 13, 201976 kt wind · 4 events here
• Winter Weather, February 5, 20194 events here
• Winter Storm, January 17, 20192 events here
• Heavy Snow, January 11, 20192 events here
• Winter Weather, December 18, 20182 events here
• Winter Storm, November 22, 201853 kt wind · 3 events here
• Winter Weather, November 11, 20182 events here
• Winter Storm, November 4, 20182 events here
• High Wind, November 2, 201858 kt wind · 2 events here
• Winter Weather, October 30, 20183 events here
• Winter Weather, October 13, 20184 events here
• Winter Weather, October 9, 20183 events here
• Winter Weather, October 8, 20181 event here

Earlier years, state by state:

• 2018
• 2017
• 2016
• 2015
• 2014
• 2013
• 2012
• 2011
• 2010
• 2009
• 2008
• 2007
• 2006
• 2005
• 2004
• 2003
• 2002
• 2001
• 2000
• 1999
• 1998
• 1997
• 1996
• 1995
• 1994
• 1993
• 1992
• 1991
• 1990
• 1989
• 1988
• 1987
• 1986
• 1985
• 1984
• 1983
• 1982
• 1981
• 1980
• 1979
• 1978
• 1977
• 1975
• 1974
• 1973
• 1972
• 1971
• 1970
• 1969
• 1967
• 1966
• 1964
• 1962
• 1958
• 1957
• 1955
• 1953

Tornadoes in Boulder CountyEvery warning in Boulder County since 1986Every county in Colorado

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.