Active Weather Alerts
Severe Thunderstorm Warning
Issued: 7:49 PM Sep. 12, 2026 – National Weather Service
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM EDT FOR SOUTHEASTERN ALLEGHENY, EAST CENTRAL WASHINGTON AND SOUTHWESTERN WESTMORELAND COUNTIES... At 349 PM EDT, a severe thunderstorm was located over Gastonville, moving northeast at 20 mph. HAZARD...60 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Pittsburgh, Mount Lebanon, Bethel Park, McMurray, McKeesport, Gastonville, Shaler Township, West Mifflin, Baldwin, Upper St. Clair, Wilkinsburg, Whitehall, South Park Township, Munhall, Jefferson Hills, North Versailles, Brentwood, Swissvale, Dormont and Castle Shannon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds. && HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...<1.00 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Flash Flood Warning
Issued: 7:39 PM Sep. 12, 2026 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM EDT THIS EVENING FOR SOUTHWESTERN ALLEGHENY AND CENTRAL WASHINGTON COUNTIES... At 339 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. Additional rainfall amounts of 1 to 1.5 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...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Mount Lebanon, Bethel Park, McMurray, Washington, Canonsburg, Gastonville, Baldwin, Upper St. Clair, Scott Township, Whitehall, South Park Township, Cecil-Bishop, Jefferson Hills, Castle Shannon, Pleasant Hills, Bridgeville, Wolfdale, McGovern and East Washington. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR INDICATED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
Flood Watch
Issued: 2:37 PM Sep. 12, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east central Ohio, including the following areas, Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison, Jefferson OH, Monroe, Muskingum, Noble and Tuscarawas, Pennsylvania, including the following areas, Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette, Forest, Greene, Higher Elevations of Fayette, Higher Elevations of Indiana, Higher Elevations of Westmoreland, Indiana, Jefferson PA, Lawrence, Mercer, Venango, Washington and Westmoreland, and West Virginia, including the following areas, Brooke, Eastern Preston, Eastern Tucker, Hancock, Marion, Marshall, Monongalia, Ohio, Preston, Ridges of Eastern Monongalia and Northwestern Preston, Western Tucker and Wetzel. * WHEN...Through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Scattered thunderstorm development during the late morning and early afternoon hours, followed by a more widespread push of heavy rain and additional thunderstorms, could result in a couple rounds of heavy rain. At least localized instances of flash flooding will be possible, particularly in locations that have wet soils from recent rain. - 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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