Active Weather Alerts
Flood Warning
Issued: 4:52 PM Aug. 20, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT UNTIL 345 PM EDT THIS AFTERNOON... ...REPLACES FLASH FLOOD WARNING... * WHAT...Flooding caused by excessive rainfall is occurring. * WHERE...Allegheny County in southwestern Pennsylvania... Western Fayette County in southwestern Pennsylvania... Northeastern Greene County in southwestern Pennsylvania... Central Washington County in southwestern Pennsylvania... Southwestern Westmoreland County in southwestern Pennsylvania... South Central Beaver County in western Pennsylvania... Brooke County in northern West Virginia... Hancock County in northern West Virginia... * WHEN...Until 345 PM EDT. * IMPACTS...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. It will take several hours for all the water from these storms to work through local drainage systems in urban areas. * ADDITIONAL DETAILS... - At 1251 PM EDT, local law enforcement reported flooding in the warned area. Between 1 and 2 inches of rain have fallen. - Some locations that will experience flooding 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. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. &&
Flash Flood Warning
Issued: 4:23 PM Aug. 20, 2026 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM EDT THIS AFTERNOON FOR EAST CENTRAL WESTMORELAND, SOUTHEASTERN ARMSTRONG, INDIANA AND SOUTHERN JEFFERSON PA COUNTIES... At 1223 PM EDT, the public reported thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Public reported flooded roadways near Ernest. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Indiana, Punxsutawney, Kittanning, Homer City, Ford City, Black Lick, West Kittanning, Clymer, Sykesville, Rural Valley, New Florence, Big Run, Dayton, Chevy Chase Heights, Rossiter, West Hills, Seward, Bolivar, Ernest and Marion Center. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...OBSERVED
Flash Flood Warning
Issued: 4:20 PM Aug. 20, 2026 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM EDT THIS AFTERNOON FOR NORTH CENTRAL FAYETTE, WESTMORELAND, SOUTHWESTERN ARMSTRONG AND SOUTHWESTERN INDIANA COUNTIES... At 1220 PM EDT, local law enforcement reported thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Law enforcement reported flooded roadways near New Alexandria. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Greensburg, Jeannette, Latrobe, Vandergrift, Apollo, Murrysville, Mount Pleasant, Scottdale, McChesneytown-Loyalhanna, Blairsville, Manor, Youngwood, Derry, Delmont, Lawson Heights, New Stanton and Leechburg. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...OBSERVED
Flood Watch
Issued: 12:18 PM Aug. 20, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Pennsylvania, including the following areas, Allegheny, Fayette, Higher Elevations of Fayette, Higher Elevations of Westmoreland and Westmoreland and northern West Virginia, including the following areas, Eastern Preston, Preston and Ridges of Eastern Monongalia and Northwestern Preston. * WHEN...Until 2 PM EDT this afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Development of narrower bands of heavy rain that slowly train over the same areas could result in localized flash flooding. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
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