Flood Warning Issued for Southwestern Pennsylvania and Northern West Virginia
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A Flood Warning is in effect until 3:45 PM EDT August 20 for Allegheny, Beaver, Fayette, Greene, Washington and Westmoreland counties in Pennsylvania and Brooke and Hancock counties in West Virginia.
Read this weather record in 30 seconds
- Record type
- Flood Warning
- Affected area
- Southwestern Pennsylvania and Northern West Virginia
- Issued
- August 20, 2026
- Issuing authority
- NWS Pittsburgh PA
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Flood Warning issued by NWS Pittsburgh PA effective from 12:51 PM EDT August 20, 2026 until 3:45 PM EDT August 20, 2026.
Affected Areas
Allegheny County, Beaver County, Fayette County, Greene County, Washington County and Westmoreland County in southwestern Pennsylvania; Brooke County and Hancock County in northern West Virginia. Specific locations include Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, Ross Township, Monroeville, Moon Township, McMurray, McKeesport, Uniontown, Canonsburg, Avella, Gastonville, Shaler Township, Plum, West Mifflin, North Side Pittsburgh, Baldwin and Upper St. Clair.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Expected Conditions
Flooding caused by excessive rainfall is occurring. Between 1 and 2 inches of rain have fallen. Flooding of rivers, creeks, streams and other low-lying and flood-prone locations is imminent or occurring. Streams continue to rise due to excess runoff from earlier rainfall.
Timeline
The warning is effective from 12:51 PM EDT until 3:45 PM EDT on August 20, 2026.
Original source: NOAA Official Notice ↗
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