Active Weather Alerts
Flash Flood Warning
Issued: 12:32 AM Sep. 4, 2026 – National Weather Service
The National Weather Service in Pittsburgh has extended the * Flash Flood Warning for... Southeastern Allegheny County in southwestern Pennsylvania... Western Westmoreland County in southwestern Pennsylvania... Southwestern Armstrong County in west central Pennsylvania... Southwestern Indiana County in west central Pennsylvania... * Until 1245 AM EDT. * At 832 PM EDT, local law enforcement reported thunderstorms producing heavy rain across the warned area. Between 1.5 and 3.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Monroeville, Greensburg, Jeannette, Vandergrift, Apollo, Murrysville, White Oak, Irwin, Manor, Trafford, Youngwood, Delmont, West Newton, New Stanton, Leechburg, North Apollo, West Leechburg and Avonmore. Water rescues were reported in Penn Township. Additional heavy rain will continue across portions of the area this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && FLASH FLOOD...OBSERVED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
Flash Flood Warning
Issued: 12:13 AM Sep. 4, 2026 – National Weather Service
The National Weather Service in Pittsburgh has extended the * Flash Flood Warning for... Allegheny County in southwestern Pennsylvania... Northern Washington County in southwestern Pennsylvania... Northwestern Westmoreland County in southwestern Pennsylvania... Southwestern Armstrong County in west central Pennsylvania... Southeastern Butler County in west central Pennsylvania... Southern Beaver County in western Pennsylvania... Brooke County in northern West Virginia... Hancock County in northern West Virginia... * Until 1215 AM EDT. * At 813 PM EDT, local law enforcement and doppler radar reported thunderstorms producing heavy rain across the warned area. Between 1.5 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, Ross Township, McCandless Township, Monroeville, Moon Township, McMurray, Weirton, McKeesport, Franklin Park, Aliquippa, Canonsburg, Gastonville, Shaler Township, Plum, West Mifflin and North Side Pittsburgh. Water rescues were reported along Mifflin, Saw Mill Run, and Library roads. In addition, flash flooding is possible at Pine Creek and Turtle Creek. Additional heavy rain is expected to move across the warned are this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && FLASH FLOOD...OBSERVED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
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