Flash Flood Warning 26, NWS Pittsburgh, PA

Issued

Aug 13, 2021, 7:45 PM EDT (23:45 UTC)

Expired

Aug 13, 2021, 9:29 PM EDT

In force

104 min

Issued by

NWS Pittsburgh, PA

Area

Storm-based polygon

Flood severity

None

County Allegheny County, PA

The Pittsburgh radar (KPBZ), 19 km from the middle of the area, began a volume at 23:44 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

707 
WGUS51 KPBZ 132345
FFWPBZ
PAC003-140245-
/O.NEW.KPBZ.FF.W.0026.210813T2345Z-210814T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
745 PM EDT Fri Aug 13 2021

The National Weather Service in Pittsburgh has issued a

* Flash Flood Warning for...
  Central Allegheny County in southwestern Pennsylvania...

* Until 1045 PM EDT.

* At 745 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Around an inch of rain has 
  fallen in short duration. 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, Penn Hills, Ross Township, Franklin Park, Shaler 
  Township, Plum, North Side Pittsburgh, Hampton Township, Scott 
  Township, Wilkinsburg, Robinson Township, O'hara Township, 
  Bellevue, Carnegie, Kennedy Township, West View, Stowe Township, 
  Oakmont, McKees Rocks and Crafton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 4054 7980 4046 7984 4042 7997 4039 8018
      4042 8022 4049 8022 4054 8008 4057 7988

FLASH FLOOD...RADAR INDICATED

$$

Brown

975 
WGUS71 KPBZ 140108
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
908 PM EDT Fri Aug 13 2021

PAC003-140245-
/O.CON.KPBZ.FF.W.0026.000000T0000Z-210814T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Allegheny PA-
908 PM EDT Fri Aug 13 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT THIS 
EVENING FOR CENTRAL ALLEGHENY COUNTY...

At 908 PM EDT, Doppler radar indicated thunderstorms have produced 
heavy rain across the warned area. Between 1 and 2 inches of rain 
have fallen. County officials have reported instances of flooding on 
area roadways.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Local Government Officials.

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, Ross Township, Franklin Park, Shaler 
  Township, Plum, North Side Pittsburgh, Hampton Township, Scott 
  Township, Wilkinsburg, Robinson Township, O'hara Township, 
  Bellevue, Carnegie, Kennedy Township, West View, Stowe Township, 
  Oakmont, McKees Rocks and Crafton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 4054 7980 4046 7984 4042 7997 4039 8018
      4042 8022 4049 8022 4054 8008 4057 7988

FLASH FLOOD...RADAR INDICATED

$$

Brown

300 
WGUS71 KPBZ 140129
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
929 PM EDT Fri Aug 13 2021

PAC003-140139-
/O.CAN.KPBZ.FF.W.0026.000000T0000Z-210814T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Allegheny PA-
929 PM EDT Fri Aug 13 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL ALLEGHENY COUNTY...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 4054 7980 4046 7984 4042 7997 4039 8018
      4042 8022 4049 8022 4054 8008 4057 7988

$$

Brown

Flash Flood Warnings in Pennsylvania, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.