This event is no longer active — it's kept here as a record. Recovery may still be underway; the guidance below applies.
Part of: Jefferson County Area Flooding — August 2026 →
Flash Flood Warning issued August 10 at 12:42PM EDT until August 10 at 3:45PM EDT by NWS Pittsburgh PA
This is a severe-significance flash flood warning event affecting Allegheny, PA; Westmoreland, PA, tracked from official feeds (NOAA / National Weather Service). We update this page as the situation develops.
- Type
- Flash Flood Warning
- Extent
- ≈ 127,041 acres
- Began
- To end
Affected by this event? Open your area's damage guides below to reach a vetted local restoration pro, 24/7.
Affected area map
The shaded area is the affected-area perimeter reported for this event by NOAA / National Weather Service (Allegheny, PA; Westmoreland, PA), colored by hazard type. Pan and zoom to explore the map; when more than one observation exists, use the slider below to step through how the reported area changed.
Interactive affected-area map
Allegheny, PA; Westmoreland, PA · ≈ 200 sq mi reported extent · Enable JavaScript to explore the map.
Shown as reported by our sources — not an official product. For current advisories and the authoritative map, see NOAA / National Weather Service ↗.
Restoration help near this event
Tap your city for a vetted local pro on that service, answered 24/7. Where we don't have a nearby city page yet, the step-by-step guides cover what to do first.
Water damage restoration
What to do now
Mold remediation
What to do now
Latest updates
Official updates and news coverage for this event, newest first — National Weather Service products, local storm reports, incident updates and press headlines. Official items are verbatim government text; news headlines link out to the original outlet.
- Storm report NWS PBZ storm report
FLASH FLOOD — 1 SE Jefferson, PA
Water rescue from flooding on Peters Creek Road.
- Bulletin NWS Pittsburgh PA
Flash Flood Warning issued
Allegheny, PA; Westmoreland, PA
- News Pittsburgh Post-Gazette
Friday thunderstorms cause flooding in parts of Western Pennsylvania
- News CBS News
Clean-up efforts begin in Pittsburgh area after Friday's flash flooding, "Seemed like a tidal wave"
Show 2 earlier updates
Updates are captured automatically from official and news sources, and may lag the live source. For the very latest, see NOAA / National Weather Service ↗.