769
Recorded events
3
Direct deaths
9
Direct injuries
$6.4M
Property damage
Thunderstorm Wind in Chester County, Pennsylvania: 769 recorded events between 1957 and 2026. The strongest on record measured 87. That places the county #23 nationally and #4 statewide for this hazard.
Decade by decade
Thunderstorm Wind in Chester County, Pennsylvania: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for thunderstorm wind in Chester County is the 2020s, when 368 of the county's 769 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Chester County archive, thunderstorm wind makes up 60.0% of all recorded severe weather across 9 hazard types. Nationally the county sits at #23 for this hazard and #4 within Pennsylvania, putting it in the 99.3 percentile of all U.S. counties.
Seasonality
Events by month
Jun is the peak month for thunderstorm wind in Chester County with 198 recorded events, while Dec is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Jul 18, 2006 | GLENMOORE | 62 | 2 | 1 | $0 |
| Jun 1, 1988 | 0 | 1 | 0 | $0 | |
| May 24, 1999 | OXFORD | 50 | 0 | 2 | $0 |
| Jun 1, 1998 | ATGLEN | 62 | 0 | 2 | $500K |
| Jun 10, 2008 | COMPASS | 56 | 0 | 1 | $100K |
| May 14, 2002 | COMPASS | 52 | 0 | 1 | $0 |
| Sep 13, 1996 | GOSHENVILLE | 0 | 0 | 1 | $0 |
| Jun 17, 1991 | 65 | 0 | 1 | $0 |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Mar 16, 2026 | CEDAR HOLLOW STATION | 50 | $0 |
| Mar 16, 2026 | PLANEBROOK | 50 | $0 |
| Mar 16, 2026 | GENERAL WARREN VLG | 50 | $0 |
| Mar 16, 2026 | BIRCHRUNVILLE | 50 | $0 |
| Mar 16, 2026 | CEDARVILLE | 50 | $0 |
| Mar 16, 2026 | COMPASS | 50 | $0 |
| Mar 16, 2026 | HONEY BROOK | 50 | $0 |
| Mar 16, 2026 | GLENMOORE | 50 | $0 |
| Jul 31, 2025 | DOWNINGTOWN MEML ARP | 50 | $0 |
| Jul 31, 2025 | DOWNINGTOWN MEML ARP | 50 | $0 |
Other hazards here
More from Chester County
- Flash Flood 223
- Hail 101
- Flood 67
- Lightning 46
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
A severe thunderstorm produced a swath of wind damage from downed trees, tree limbs to downed wires across the northeast half of Chester County. Many roadways were blocked and vehicles damaged by fallen trees. Trees also fell onto the Pennsylvania Turnpike. Hardest hit were Uwchlan, Wallace, West Vincent and Willistown Townships, but wind damage was also reported in North Coventry, Phoenixville, Charlestown, Downingtown, West Whiteland, West Goshen, East Goshen, West Chester, Westtown, Pocopson. Kenneth and Kenneth Square. Nearly 80,000 homes and businesses lost power and it took until June 28th for power to be fully restored. In West Chester, downed trees blocked the entrance to a hospital. Downed trees also damaged a home and garage and crushed a barn. In North Coventry, a downed tree punched a hole in the roof of a home.
A squall line of severe thunderstorms knocked down numerous trees as it moved through Chester County. Approximately 80,000 homes and businesses lost power with thirty roadways closed because of downed trees. Chester County had about a third (17,000) of the remaining southeast Pennsylvania outages on the afternoon of the 9th. West Caln Township still had 5,000 homes and businesses without power that night. Overall, the southern half of the county was hardest hit. Downed trees damaged homes in West Fallowfield, West Caln, Penn and Easttown Townships.
A severe thunderstorm knocked down numerous large trees in Kenneth Square and Kenneth Township. Many homes within Kennett Square sustained water damage after the fallen trees created holes in the roofs. The combination of the damaging winds and lightning across southern Chester County caused power outages that lasted up to twenty-four hours. Of the 45,000 homes and businesses that lost power in the PECO energy service area, Chester County was hardest hit.
Quick answers
Frequently asked
How many thunderstorm wind events are on record in Chester County, Pennsylvania?
769 thunderstorm wind events are recorded in Chester County between 1957 and 2026, causing 3 direct deaths.
What is the strongest thunderstorm wind recorded in Chester County?
The strongest thunderstorm wind on record in Chester County measured 87.
Where does the thunderstorm wind data for Chester County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Thunderstorm Wind in Chester County, Pennsylvania.” Severe Weather History. severeweatherhistory.com/county/pennsylvania/chester-county/thunderstorm-wind/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.