Storm History: Union County, Pennsylvania
Every storm the National Weather Service has filed in Union 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
- 296
- Deaths
- 3
- Injuries
- 22
- Damage
- $52 million
- Episodes
- 262
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 | 62 | 1 | 1 | $15 million |
| Hail | 48 | 0 | 1 | $282,000 |
| Tornado | 34 | 2 | 20 | $25 million |
| Heavy Snow | 31 | 0 | 0 | $4,000 |
| Flash Flood | 31 | 0 | 0 | $11 million |
| Winter Storm | 26 | 0 | 0 | |
| Flood | 25 | 0 | 0 | $55,000 |
| Ice Storm | 11 | 0 | 0 | $2,000 |
| High Wind | 8 | 0 | 0 | $14,000 |
| Drought | 6 | 0 | 0 | |
| Extreme Cold/Wind Chill | 5 | 0 | 0 | |
| Heat | 2 | 0 | 0 | |
| Excessive Heat | 2 | 0 | 0 | |
| Strong Wind | 2 | 0 | 0 | $12,000 |
| Blizzard | 1 | 0 | 0 | |
| Tropical Storm | 1 | 0 | 0 | |
| Winter Weather | 1 | 0 | 0 |
The deadliest
The costliest
Damage within this county, in the dollars of its year.
- Tornado, May 31, 1985
- Thunderstorm Wind, June 20, 1996
- Flash Flood, September 7, 1999
- Flash Flood, September 7, 2011
- Hail, June 2, 1999
- Flash Flood, August 20, 1999
- Tornado, April 14, 2019
- Tornado, September 4, 2001
- Thunderstorm Wind, April 23, 1996
- Flood, August 7, 2023
- Tornado, August 20, 2015
- Tornado, July 2, 2023
- Hail, May 29, 2019
- Thunderstorm Wind, July 2, 2023
- Hail, April 14, 2019
- Thunderstorm Wind, July 21, 2003
- Tornado, May 23, 2011
- Flash Flood, September 16, 1999
- Flash Flood, April 27, 2011
- Thunderstorm Wind, June 19, 2025
The largest hail
The largest stone in each episode, which may have fallen in a neighboring county of the same episode.
- Hail, May 28, 2019
- Flash Flood, May 31, 2015
- Flash Flood, April 26, 2011
- Hail, June 2, 1999
- Hail, June 3, 2023
- Flood, August 7, 2023
- Hail, May 29, 2019
- Hail, July 18, 2016
- Hail, July 7, 2012
- Hail, August 7, 2008
- Hail, August 25, 1994
- Hail, August 27, 1994
- Hail, May 13, 1991
- Hail, August 28, 1990
- Flash Flood, July 13, 2021
The strongest tornadoes
Every episode, newest first
- Thunderstorm Wind, June 6, 2026
- Heavy Snow, February 22, 2026
- Heavy Snow, January 24, 2026
- Excessive Heat, June 23, 2025
- Thunderstorm Wind, June 19, 2025
- Extreme Cold/Wind Chill, January 20, 2025
- Hail, June 30, 2024
- Hail, June 22, 2024
- Hail, April 14, 2024
- Heavy Snow, February 16, 2024
- Heavy Snow, February 13, 2024
- Flood, August 7, 2023
- Tornado, July 2, 2023
- Thunderstorm Wind, July 2, 2023
- Tornado, July 2, 2023
- Tornado, July 2, 2023
- Hail, June 3, 2023
- Thunderstorm Wind, February 21, 2023
- Ice Storm, December 15, 2022
- Winter Storm, March 11, 2022
- Flash Flood, February 4, 2022
- Winter Storm, January 16, 2022
- Ice Storm, January 9, 2022
- Flash Flood, August 11, 2021
- Flash Flood, July 13, 2021
- Flash Flood, July 11, 2021
- Thunderstorm Wind, June 30, 2021
- Winter Weather, February 22, 2021
- Ice Storm, February 15, 2021
- Winter Storm, February 1, 2021
- Winter Storm, January 31, 2021
- Winter Storm, December 16, 2020
- Drought, November 1, 2020
- Drought, October 1, 2020
- Thunderstorm Wind, August 27, 2020
- Flash Flood, August 7, 2020
- Flash Flood, July 8, 2020
- Thunderstorm Wind, September 11, 2019
- Hail, July 30, 2019
- Hail, May 29, 2019
- Hail, May 28, 2019
- Hail, May 19, 2019
- Tornado, April 14, 2019
- Hail, April 14, 2019
- High Wind, February 24, 2019
- Winter Storm, February 20, 2019
- Winter Storm, November 15, 2018
- Thunderstorm Wind, August 7, 2018
- Hail, May 15, 2018
- High Wind, April 4, 2018
- Strong Wind, May 5, 2017
- Tornado, May 1, 2017
- Winter Storm, March 13, 2017
- Winter Storm, February 8, 2017
- Hail, July 31, 2016
- Hail, July 25, 2016
- Hail, July 18, 2016
- Winter Storm, January 22, 2016
- Tornado, August 20, 2015
- Flash Flood, June 30, 2015
- Flash Flood, May 31, 2015
- Flood, March 11, 2015
- Extreme Cold/Wind Chill, February 14, 2015
- Heavy Snow, December 11, 2014
- Heavy Snow, November 25, 2014
- Flood, May 16, 2014
- Heavy Snow, February 13, 2014
- Winter Storm, February 4, 2014
- Winter Storm, December 14, 2013
- Thunderstorm Wind, July 7, 2013
- Flash Flood, May 8, 2013
- Thunderstorm Wind, April 19, 2013
- Flood, October 29, 2012
- Tornado, July 26, 2012
- Hail, July 7, 2012
- Flash Flood, June 22, 2012
- Heavy Snow, October 29, 2011
- Flash Flood, September 28, 2011
- Flash Flood, September 7, 2011
- Hail, August 19, 2011
- Excessive Heat, July 21, 2011
- Tornado, May 23, 2011
- Flash Flood, April 27, 2011
- Flash Flood, April 26, 2011
- Flood, March 10, 2011
- Flood, March 6, 2011
- Heavy Snow, March 6, 2011
- Winter Storm, February 1, 2011
- Flood, December 1, 2010
- Hail, July 12, 2010
- Winter Storm, February 9, 2010
- Winter Storm, February 5, 2010
- Flash Flood, January 25, 2010
- Flash Flood, July 31, 2009
- Tornado, July 11, 2009
- Ice Storm, January 6, 2009
- Winter Storm, December 19, 2008
- Hail, August 7, 2008
- Hail, July 17, 2008
- Hail, June 16, 2008
- Flood, March 4, 2008
- Ice Storm, February 12, 2008
- Extreme Cold/Wind Chill, February 10, 2008
- Winter Storm, February 1, 2008
- Tornado, August 7, 2007
- Hail, June 27, 2007
- Tornado, June 19, 2007
- Thunderstorm Wind, June 8, 2007
- Heavy Snow, March 16, 2007
- Winter Storm, February 13, 2007
- Extreme Cold/Wind Chill, February 5, 2007
- Extreme Cold/Wind Chill, February 5, 2007
- High Wind, December 1, 2006
- Heat, August 1, 2006
- Heat, July 17, 2006
- Flash Flood, June 27, 2006
- Thunderstorm Wind, June 22, 2006
- Thunderstorm Wind, June 22, 2006
- Winter Storm, December 16, 2005
- Heavy Snow, December 9, 2005
- Flood, November 29, 2005
- Thunderstorm Wind, November 6, 2005
- Thunderstorm Wind, November 6, 2005
- Hail, November 6, 2005
- Thunderstorm Wind, June 6, 2005
- Thunderstorm Wind, June 6, 2005
- Thunderstorm Wind, June 6, 2005
- Flood, April 3, 2005
- Flood, April 3, 2005
- Flood, April 2, 2005
- Flood, March 29, 2005
- Flood, March 29, 2005
- Heavy Snow, March 1, 2005
- Heavy Snow, February 24, 2005
- Winter Storm, January 5, 2005
- Flood, September 18, 2004
- Flood, September 17, 2004
- Flood, August 21, 2004
- Flash Flood, August 20, 2004
- Thunderstorm Wind, May 26, 2004
- Heavy Snow, March 19, 2004
- Heavy Snow, March 16, 2004
- Ice Storm, February 6, 2004
- Heavy Snow, February 3, 2004
- Flood, December 11, 2003
- High Wind, November 13, 2003
- Flood, September 23, 2003
- Tropical Storm, September 18, 2003
- Thunderstorm Wind, August 16, 2003
- Thunderstorm Wind, July 27, 2003
- Thunderstorm Wind, July 21, 2003
- Thunderstorm Wind, July 21, 2003
- Thunderstorm Wind, July 21, 2003
- Thunderstorm Wind, July 18, 2003
- Heavy Snow, February 16, 2003
- Heavy Snow, January 2, 2003
- Heavy Snow, December 25, 2002
- Ice Storm, December 10, 2002
- Heavy Snow, December 5, 2002
- Thunderstorm Wind, July 23, 2002
- Thunderstorm Wind, June 27, 2002
- Thunderstorm Wind, June 27, 2002
- Thunderstorm Wind, April 28, 2002
- High Wind, March 9, 2002
- Thunderstorm Wind, March 9, 2002
- Heavy Snow, January 6, 2002
- Flash Flood, September 24, 2001
- Tornado, September 4, 2001
- Thunderstorm Wind, August 19, 2001
- Thunderstorm Wind, July 17, 2001
- Thunderstorm Wind, June 20, 2001
- Thunderstorm Wind, June 12, 2001
- Heavy Snow, March 4, 2001
- Heavy Snow, December 19, 2000
- Winter Storm, December 13, 2000
- High Wind, December 12, 2000
- Thunderstorm Wind, June 11, 2000
- Thunderstorm Wind, June 11, 2000
- Thunderstorm Wind, June 11, 2000
- Thunderstorm Wind, June 2, 2000
- Hail, May 13, 2000
- Winter Storm, February 18, 2000
- Ice Storm, February 13, 2000
- Heavy Snow, January 30, 2000
- Heavy Snow, January 25, 2000
- Thunderstorm Wind, October 13, 1999
- Flash Flood, September 30, 1999
- High Wind, September 29, 1999
- High Wind, September 16, 1999
- Flash Flood, September 16, 1999
- Flash Flood, September 7, 1999
- Thunderstorm Wind, August 26, 1999
- Flash Flood, August 20, 1999
- Thunderstorm Wind, August 13, 1999
- Drought, August 1, 1999
- Drought, July 1, 1999
- Tornado, July 1, 1999
- Hail, June 2, 1999
- Thunderstorm Wind, May 24, 1999
- Thunderstorm Wind, May 8, 1999
- Heavy Snow, March 14, 1999
- Flash Flood, January 24, 1999
- Winter Storm, January 14, 1999
- Winter Storm, January 8, 1999
- Winter Storm, January 2, 1999
- Drought, December 15, 1998
- Tornado, September 27, 1998
- Thunderstorm Wind, September 7, 1998
- Thunderstorm Wind, June 30, 1998
- Thunderstorm Wind, June 2, 1998
- Thunderstorm Wind, May 29, 1998
- Flash Flood, April 19, 1998
- Heavy Snow, February 23, 1998
- Flash Flood, February 18, 1998
- Ice Storm, January 22, 1998
- Ice Storm, January 15, 1998
- Flash Flood, January 8, 1998
- Heavy Snow, December 29, 1997
- Drought, October 31, 1997
- Thunderstorm Wind, August 16, 1997
- Tornado, July 18, 1997
- Tornado, July 18, 1997
- Thunderstorm Wind, May 19, 1997
- Ice Storm, March 14, 1997
- Winter Storm, February 13, 1997
- Flash Flood, December 13, 1996
- Flash Flood, December 1, 1996
- Thunderstorm Wind, November 8, 1996
- Flash Flood, September 13, 1996
- Thunderstorm Wind, June 20, 1996
- Thunderstorm Wind, April 23, 1996
- Heavy Snow, March 7, 1996
- Flash Flood, January 19, 1996
- Flood, January 19, 1996
- Heavy Snow, January 12, 1996
- Blizzard, January 7, 1996
- Heavy Snow, January 2, 1996
- Thunderstorm Wind, November 11, 1995
- Thunderstorm Wind, July 16, 1995
- Tornado, July 6, 1995
- Hail, April 4, 1995
- Hail, August 27, 1994
- Hail, August 25, 1994
- Hail, July 6, 1994
- Tornado, June 12, 1994
- Tornado, June 6, 1994
- Tornado, April 16, 1993
- Tornado, September 18, 1991
- Tornado, July 23, 1991
- Hail, May 13, 1991
Earlier years, state by state:
More
Tornadoes in Union CountyEvery warning in Union 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.