Home / Pennsylvania / Lawrence
Flash Flood in Lawrence County, Pennsylvania
Flash Flood May 21, 2025 · Lawrence County, Pennsylvania
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Union Valley Road was reported to be flooded in both directions.
The wider storm
An occluding surface low slowly drifted across Ohio on May 21st. Bands of showers with embedded thunderstorms moved across southwest Pennsylvania. During the mid to late afternoon, one convective band, associated with ample 0-3km CAPE and surface vorticity, was able to generate four tornadoes across southwest PA. Three were relatively brief and weak, but one longer-track EF1 was noted in Washington County. Multiple rounds of slow-moving heavier rain also produced a number of flash flooding incidents.
Began near Union Vly (40.9400, -80.3300).
Other tornadoes from the same storm system
3 more tornadoes the National Weather Service filed under this storm episode.
Source: NOAA Storm Events Database, event 1266310. Narratives are written by the National Weather Service forecast office that issued the report.
Tornadoes near your address
See every tornado that passed near a place you know, measured to its path.
We couldn’t get your location. Check that location access is allowed for this site, or type an address.