Storm History: Chester County, Pennsylvania
Every storm the National Weather Service has filed in Chester County, Pennsylvania: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.
The record
- Events
- 1,678
- Deaths
- 12
- Injuries
- 93
- Damage
- $80 million
- Episodes
- 805
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.
Every year
By kind of event
Counted under the kind that heads each episode.
| Kind of event | Events | Deaths | Injuries | Damage |
|---|---|---|---|---|
| Thunderstorm Wind | 446 | 3 | 8 | $572,000 |
| Hail | 320 | 1 | 4 | $1.2 million |
| Flash Flood | 252 | 2 | 1 | $54 million |
| Tornado | 175 | 2 | 34 | $20 million |
| Winter Weather | 133 | 0 | 13 | $50,000 |
| Winter Storm | 82 | 0 | 0 | |
| Flood | 60 | 1 | 7 | $2.9 million |
| Dense Fog | 50 | 0 | 0 | |
| Heavy Rain | 26 | 1 | 0 | |
| Excessive Heat | 25 | 0 | 0 | |
| Extreme Cold/Wind Chill | 21 | 0 | 0 | |
| Lightning | 20 | 2 | 1 | $787,000 |
| High Wind | 17 | 0 | 0 | $26,000 |
| Heavy Snow | 16 | 0 | 0 | |
| Strong Wind | 13 | 0 | 0 | $29,000 |
| Heat | 6 | 0 | 0 | |
| Ice Storm | 5 | 0 | 24 | |
| Blizzard | 3 | 0 | 0 | $10 |
| Tropical Storm | 2 | 0 | 0 | $850,000 |
| Wildfire | 2 | 0 | 1 | |
| Marine High Wind | 1 | 0 | 0 | |
| Funnel Cloud | 1 | 0 | 0 | |
| Storm Surge/Tide | 1 | 0 | 0 | |
| Freezing Fog | 1 | 0 | 0 |
The deadliest
The costliest
Damage within this county, in the dollars of its year.
- Flash Flood, September 1, 2021
- Tornado, July 27, 1994
- Flash Flood, June 27, 2006
- Flash Flood, September 15, 2003
- Flash Flood, September 16, 1999
- Tornado, November 26, 1999
- Tornado, September 5, 1979
- Flood, April 30, 2014
- Flood, May 1, 2014
- Tornado, May 31, 1998
- Tropical Storm, August 27, 2011
- Hail, June 24, 2010
- Tornado, June 19, 2017
- Tornado, September 1, 2021
- Thunderstorm Wind, June 14, 2008
- Tornado, March 22, 1955
- Tornado, July 17, 1988
- Tornado, July 9, 1990
- Tornado, July 17, 1992
- Tornado, August 28, 1992
The largest hail
The largest stone in each episode, which may have fallen in a neighboring county of the same episode.
The strongest tornadoes
- Tornado, March 22, 1955
- Tornado, March 21, 1976
- Tornado, July 11, 1976
- Tornado, July 27, 1994
- Tornado, September 5, 1979
- Tornado, August 19, 1955
- Tornado, June 29, 1973
- Tornado, April 3, 1975
- Tornado, July 5, 1984
- Tornado, June 15, 1989
- Tornado, November 20, 1989
- Tornado, June 8, 1990
- Tornado, July 17, 1992
- Tornado, August 28, 1992
- Tornado, May 29, 1995
Every episode, newest first
- Dense Fog, June 28, 2026
- Hail, June 22, 2026
- Thunderstorm Wind, June 6, 2026
- Flash Flood, May 20, 2026
- Dense Fog, April 5, 2026
- Thunderstorm Wind, March 16, 2026
- Dense Fog, March 7, 2026
- Winter Weather, March 3, 2026
- Winter Storm, February 22, 2026
- Dense Fog, February 17, 2026
- Winter Storm, January 25, 2026
- Winter Weather, January 18, 2026
- Freezing Fog, January 17, 2026
- Winter Weather, January 17, 2026
- Dense Fog, January 6, 2026
- Dense Fog, December 28, 2025
- Winter Weather, December 26, 2025
- High Wind, December 19, 2025
- Winter Storm, December 13, 2025
- Winter Weather, December 2, 2025
- Dense Fog, November 25, 2025
- Dense Fog, September 24, 2025
- Thunderstorm Wind, July 31, 2025
- Excessive Heat, July 25, 2025
- Flash Flood, July 9, 2025
- Hail, July 8, 2025
- Flash Flood, July 8, 2025
- Flash Flood, July 7, 2025
- Tornado, July 1, 2025
- Flash Flood, July 1, 2025
- Flash Flood, June 27, 2025
- Thunderstorm Wind, June 26, 2025
- Excessive Heat, June 23, 2025
- Thunderstorm Wind, June 19, 2025
- Thunderstorm Wind, May 16, 2025
- Flash Flood, May 16, 2025
- Dense Fog, May 15, 2025
- Tornado, May 6, 2025
- Dense Fog, April 6, 2025
- Thunderstorm Wind, March 31, 2025
- Dense Fog, March 15, 2025
- High Wind, February 16, 2025
- Winter Weather, February 15, 2025
- Winter Weather, February 11, 2025
- Winter Weather, February 8, 2025
- Dense Fog, February 6, 2025
- Winter Weather, February 6, 2025
- Winter Storm, January 19, 2025
- Winter Weather, January 6, 2025
- Dense Fog, December 28, 2024
- Dense Fog, December 9, 2024
- Dense Fog, September 12, 2024
- Flash Flood, August 18, 2024
- Flash Flood, August 8, 2024
- Thunderstorm Wind, August 3, 2024
- Thunderstorm Wind, August 2, 2024
- Excessive Heat, August 2, 2024
- Hail, July 17, 2024
- Hail, July 16, 2024
- Hail, July 14, 2024
- Excessive Heat, July 10, 2024
- Excessive Heat, July 9, 2024
- Excessive Heat, July 5, 2024
- Thunderstorm Wind, June 30, 2024
- Thunderstorm Wind, June 23, 2024
- Excessive Heat, June 22, 2024
- Thunderstorm Wind, June 14, 2024
- Winter Storm, February 16, 2024
- Winter Storm, February 13, 2024
- Dense Fog, January 26, 2024
- Dense Fog, January 24, 2024
- Winter Storm, January 19, 2024
- Winter Weather, January 15, 2024
- Flood, January 9, 2024
- High Wind, January 9, 2024
- Winter Storm, January 6, 2024
- Flood, December 27, 2023
- Flood, December 18, 2023
- Dense Fog, December 9, 2023
- Dense Fog, December 2, 2023
- Dense Fog, December 2, 2023
- Dense Fog, October 3, 2023
- Hail, September 8, 2023
- Hail, September 7, 2023
- Hail, August 12, 2023
- Tornado, August 7, 2023
- Thunderstorm Wind, July 29, 2023
- Thunderstorm Wind, July 28, 2023
- Thunderstorm Wind, July 27, 2023
- Dense Fog, July 25, 2023
- Hail, July 25, 2023
- Flash Flood, July 25, 2023
- Thunderstorm Wind, July 21, 2023
- Flash Flood, July 9, 2023
- Flash Flood, July 8, 2023
- Flash Flood, July 7, 2023
- Thunderstorm Wind, July 2, 2023
- Thunderstorm Wind, June 27, 2023
- Tornado, June 26, 2023
- Flash Flood, June 26, 2023
- Thunderstorm Wind, June 25, 2023
- Tornado, June 16, 2023
- Dense Fog, April 16, 2023
- Hail, April 15, 2023
- Tornado, April 1, 2023
- Dense Fog, December 31, 2022
- Extreme Cold/Wind Chill, December 23, 2022
- Winter Weather, December 23, 2022
- Winter Weather, December 22, 2022
- Winter Storm, December 15, 2022
- Dense Fog, December 7, 2022
- Dense Fog, November 4, 2022
- Dense Fog, October 25, 2022
- Flash Flood, September 6, 2022
- Excessive Heat, August 9, 2022
- Hail, August 4, 2022
- Thunderstorm Wind, July 28, 2022
- Flash Flood, July 2, 2022
- Thunderstorm Wind, July 2, 2022
- Hail, July 1, 2022
- Hail, June 1, 2022
- Hail, May 22, 2022
- Hail, May 16, 2022
- Thunderstorm Wind, April 14, 2022
- Tornado, March 31, 2022
- Winter Storm, March 12, 2022
- Thunderstorm Wind, March 7, 2022
- Ice Storm, February 24, 2022
- Thunderstorm Wind, February 18, 2022
- Winter Weather, February 13, 2022
- Winter Weather, February 7, 2022
- Winter Weather, February 4, 2022
- Winter Storm, January 28, 2022
- Winter Storm, January 16, 2022
- Winter Weather, January 9, 2022
- Winter Weather, January 6, 2022
- Winter Weather, January 5, 2022
- Thunderstorm Wind, October 25, 2021
- Flash Flood, September 23, 2021
- Thunderstorm Wind, September 23, 2021
- Flash Flood, September 1, 2021
- Tornado, September 1, 2021
- Thunderstorm Wind, August 27, 2021
- Tornado, August 18, 2021
- Flash Flood, August 18, 2021
- Thunderstorm Wind, August 11, 2021
- Excessive Heat, August 11, 2021
- Thunderstorm Wind, August 10, 2021
- Thunderstorm Wind, July 17, 2021
- Hail, July 8, 2021
- Hail, July 6, 2021
- Thunderstorm Wind, July 1, 2021
- Thunderstorm Wind, June 30, 2021
- Thunderstorm Wind, June 21, 2021
- Hail, June 14, 2021
- Thunderstorm Wind, June 8, 2021
- Flash Flood, June 8, 2021
- Hail, May 26, 2021
- High Wind, April 30, 2021
- Thunderstorm Wind, March 28, 2021
- Winter Weather, February 22, 2021
- Winter Storm, February 18, 2021
- Ice Storm, February 15, 2021
- Winter Weather, February 13, 2021
- Winter Weather, February 10, 2021
- Winter Storm, February 7, 2021
- Winter Storm, February 1, 2021
- Winter Weather, January 31, 2021
- Winter Weather, January 26, 2021
- Winter Weather, January 1, 2021
- Winter Storm, December 16, 2020
- Tornado, November 30, 2020
- Thunderstorm Wind, November 15, 2020
- Hail, August 28, 2020
- Thunderstorm Wind, August 23, 2020
- Thunderstorm Wind, August 12, 2020
- Flash Flood, August 12, 2020
- Flash Flood, August 7, 2020
- Tornado, August 4, 2020
- Thunderstorm Wind, July 23, 2020
- Hail, July 22, 2020
- Hail, July 6, 2020
- Flash Flood, July 6, 2020
- Thunderstorm Wind, June 28, 2020
- Hail, June 3, 2020
- High Wind, April 30, 2020
- Thunderstorm Wind, April 21, 2020
- Thunderstorm Wind, April 9, 2020
- Thunderstorm Wind, March 3, 2020
- Thunderstorm Wind, February 7, 2020
- Winter Weather, January 18, 2020
- Winter Weather, January 7, 2020
- Winter Storm, December 16, 2019
- Winter Storm, December 1, 2019
- Flash Flood, November 1, 2019
- Tornado, October 31, 2019
- Thunderstorm Wind, September 11, 2019
- Hail, August 21, 2019
- Flash Flood, August 14, 2019
- Hail, August 7, 2019
- Thunderstorm Wind, August 1, 2019
- Hail, July 31, 2019
- Thunderstorm Wind, July 22, 2019
- Thunderstorm Wind, July 21, 2019
- Flash Flood, July 18, 2019
- Thunderstorm Wind, July 17, 2019
- Flash Flood, July 11, 2019
- Thunderstorm Wind, July 2, 2019
- Hail, June 29, 2019
- Thunderstorm Wind, June 20, 2019
- Flash Flood, June 19, 2019
- Thunderstorm Wind, June 16, 2019
- Flash Flood, June 13, 2019
- Hail, June 2, 2019
- Tornado, May 29, 2019
- Tornado, May 28, 2019
- Thunderstorm Wind, April 26, 2019
- Winter Storm, March 3, 2019
- Winter Weather, March 1, 2019
- Winter Weather, March 1, 2019
- High Wind, February 24, 2019
- Winter Storm, February 20, 2019
- Winter Storm, February 11, 2019
- Winter Weather, February 10, 2019
- Winter Weather, February 1, 2019
- Winter Storm, January 29, 2019
- Winter Storm, January 19, 2019
- Winter Weather, January 12, 2019
- Winter Weather, January 8, 2019
- Winter Storm, November 15, 2018
- Hail, November 2, 2018
- Flash Flood, November 2, 2018
- Flash Flood, August 31, 2018
- Flash Flood, August 21, 2018
- Flash Flood, August 13, 2018
- Flash Flood, July 22, 2018
- Flash Flood, July 3, 2018
- Excessive Heat, July 1, 2018
- Flash Flood, June 10, 2018
- Flash Flood, May 15, 2018
- Thunderstorm Wind, May 15, 2018
- Hail, May 12, 2018
- Hail, May 10, 2018
- High Wind, April 4, 2018
- Winter Storm, April 2, 2018
- Winter Storm, March 21, 2018
- Winter Storm, March 6, 2018
- Winter Storm, March 2, 2018
- Winter Storm, February 17, 2018
- Winter Storm, December 9, 2017
Earlier years, state by state:
More
Tornadoes in Chester CountyEvery warning in Chester County since 1986Every county in Pennsylvania
Sources
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.