Flash Flood Warning 24, NWS Pittsburgh, PA

Issued

Aug 12, 2021, 8:36 PM EDT (00:36 UTC)

Expired

Aug 12, 2021, 11:45 PM EDT

In force

3 hr

Issued by

NWS Pittsburgh, PA

Area

Storm-based polygon

Flood severity

None

Counties Jefferson County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV

The Pittsburgh radar (KPBZ), 10 km from the middle of the area, began a volume at 00:37 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

820 
WGUS51 KPBZ 130036
FFWPBZ
OHC081-PAC003-005-007-019-125-129-WVC009-029-130345-
/O.NEW.KPBZ.FF.W.0024.210813T0036Z-210813T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
836 PM EDT Thu Aug 12 2021

The National Weather Service in Pittsburgh has issued a

* Flash Flood Warning for...
  Southeastern Jefferson OH County in east central Ohio...
  Northern Allegheny County in southwestern Pennsylvania...
  Northwestern Washington County in southwestern Pennsylvania...
  Western 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 1145 PM EDT.

* At 836 PM EDT, Radar indicated thunderstorms producing heavy rain 
  across the warned area. Between 1.5 and 2 inches of rain have 
  fallen, with an additional 1.0 to 2.0 inches expected. Flash 
  flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  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, Ross Township, McCandless Township, Cranberry, Moon 
  Township, Weirton, Steubenville, Franklin Park, Aliquippa, 
  Wellsburg, Avella, Shaler Township, Hampton Township, Robinson 
  Township, Harrison Township, Economy, O'hara Township, Bellevue, 
  Kennedy Township and Ambridge.

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.

&&

LAT...LON 4027 8079 4039 8069 4048 8052 4068 8015
      4068 7969 4066 7970 4064 7970 4064 7969
      4032 8036 4025 8052 4019 8066

FLASH FLOOD...RADAR INDICATED

$$

194 
WGUS71 KPBZ 130120
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
920 PM EDT Thu Aug 12 2021

OHC081-PAC003-005-007-019-125-129-WVC009-029-130345-
/O.CON.KPBZ.FF.W.0024.000000T0000Z-210813T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jefferson OH OH-Allegheny PA-Armstrong PA-Beaver PA-Butler PA-
Washington PA-Westmoreland PA-Brooke WV-Hancock WV-
920 PM EDT Thu Aug 12 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT THIS 
EVENING FOR SOUTHEASTERN JEFFERSON OH, NORTHERN ALLEGHENY, 
NORTHWESTERN WASHINGTON, WESTERN WESTMORELAND, SOUTHWESTERN 
ARMSTRONG, SOUTHEASTERN BUTLER, SOUTHERN BEAVER, BROOKE AND HANCOCK 
COUNTIES...

At 920 PM EDT, Radar indicated thunderstorms producing heavy rain 
across the warned area. Between 2 and 3 inches of rain have fallen, 
with an additional 1 to 2 inches expected. Flash flooding is ongoing 
or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

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, Ross Township, McCandless Township, Cranberry, Moon 
  Township, Weirton, Steubenville, Franklin Park, Aliquippa, 
  Wellsburg, Avella, Shaler Township, Hampton Township, Robinson 
  Township, Harrison Township, Economy, O'hara Township, Bellevue, 
  Kennedy Township and Ambridge.

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.

&&

LAT...LON 4027 8079 4039 8069 4048 8052 4068 8015
      4068 7969 4066 7970 4064 7970 4064 7969
      4032 8036 4025 8052 4019 8066

FLASH FLOOD...RADAR INDICATED

$$

525 
WGUS71 KPBZ 130344
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
1144 PM EDT Thu Aug 12 2021

OHC081-PAC003-005-007-019-125-129-WVC009-029-130354-
/O.EXP.KPBZ.FF.W.0024.000000T0000Z-210813T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jefferson OH OH-Allegheny PA-Armstrong PA-Beaver PA-Butler PA-
Washington PA-Westmoreland PA-Brooke WV-Hancock WV-
1144 PM EDT Thu Aug 12 2021

...FLASH FLOOD WARNING AT 1145 PM EDT THIS EVENING FOR SOUTHEASTERN 
JEFFERSON OH, NORTHERN ALLEGHENY, NORTHWESTERN WASHINGTON, WESTERN 
WESTMORELAND, SOUTHWESTERN ARMSTRONG, SOUTHEASTERN BUTLER, SOUTHERN 
BEAVER, BROOKE AND HANCOCK COUNTIES HAS BEEN REPLACED WITH A FLOOD 
WARNING...

Please continue to heed remaining road closures.

LAT...LON 4027 8079 4039 8069 4043 8061 4048 8052
      4068 8015 4068 7969 4066 7970 4064 7970
      4064 7969 4032 8036 4025 8052 4019 8066

$$

SH

Flash Flood Warnings in Pennsylvania, 2021Flash Flood Warnings in West Virginia, 2021Flash Flood Warnings in Ohio, 2021Every flash flood warning in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.