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Active official alertUpdated

Flash Flood Warning for Allegheny, PA; Armstrong, PA; Beaver, PA +5 more

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What you need to know

Effective
Ends or expires
Official severity
Severe
Official urgency
Immediate
Official certainty
Likely

What is happening

At 705 PM EDT, the public and doppler radar reported thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash...

What the bulletin says to do

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Read official NWS bulletin

Full official description

Bulletin details

At 705 PM EDT, the public and doppler radar reported thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Public reported. 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... 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. Several roads were flooded across the warned area, including in Mcdonald and the city of Pittsburgh.

Official geometry where available

Alert boundary

Lifecycle record

Official revisions

3 captured
  1. Update

    Flash Flood Warning issued September 3 at 7:05PM EDT until September 3 at 9:15PM EDT by NWS Pittsburgh PA

    Official revision
  2. Update

    Flash Flood Warning issued September 3 at 6:43PM EDT until September 3 at 9:15PM EDT by NWS Pittsburgh PA

    Official revision
  3. Alert

    Flash Flood Warning issued September 3 at 6:11PM EDT until September 3 at 9:15PM EDT by NWS Pittsburgh PA

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Pittsburgh PA. This page reorganizes official fields and does not add a forecast or expand the affected area.

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