Alert archive / Pennsylvania / Flash Flood Warnings in 2024
Flash Flood Warning 44, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Aug 31, 2024, 7:30 PM EDT for Allegheny County, Washington County, Westmoreland County, Pennsylvania. It was in force for 85 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 31, 2024, 7:30 PM EDT (23:30 UTC)
- Expired
- Aug 31, 2024, 8:55 PM EDT
- In force
- 85 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Allegheny County, PA, Washington County, PA, Westmoreland County, PA
The radar
The Pittsburgh radar (KPBZ), 36 km from the middle of the area, began a volume at 23:32 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.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 11.5 hours before the alert went out and 20 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 446 J/kg
- Mixed-layer CIN
- -161 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pittsburgh, PA wrote its last area forecast discussion before this flash flood warning went out at Aug 31, 5:41 PM EDT, 1 hour 49 minutes earlier.
Area forecast discussion, Aug 31, 5:41 PM EDT, 1 hour 49 minutes before
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</html>Hazardous weather outlook, Aug 31, 5:18 PM EDT, 2 hours 12 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 518 PM EDT Sat Aug 31 2024 WVZ512>514-012130- Eastern Preston-Western Tucker-Eastern Tucker- 518 PM EDT Sat Aug 31 2024 This Hazardous Weather Outlook is for northern West Virginia. .DAY ONE...Tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There a marginal risk of severe thunderstorms on Sunday, with damaging wind being the primary threat. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>022-029- 031-073>078-WVZ001>004-012-021-509>511-012130- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest- Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny-Armstrong- Washington-Greene-Westmoreland-Higher Elevations of Westmoreland- Fayette-Higher Elevations of Fayette-Indiana- Higher Elevations of Indiana-Hancock-Brooke-Ohio-Marshall-Wetzel- Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- 518 PM EDT Sat Aug 31 2024 This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. SKH
In the hours before
Local storm report, Aug 31, 4:05 PM EDT, 3 hours 25 minutes before
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</html>Local storm report, Aug 31, 4:10 PM EDT, 3 hours 20 minutes before
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</html>Local storm report, Aug 31, 4:17 PM EDT, 3 hours 13 minutes before
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</html>Local storm report, Aug 31, 4:22 PM EDT, 3 hours 8 minutes before
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</html>Local storm report, Aug 31, 4:26 PM EDT, 3 hours 4 minutes before
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</html>Special weather statement, Aug 31, 4:57 PM EDT, 2 hours 33 minutes before
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</html>The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 12:00 PM EDT | Special Weather Statement | PBZ | Indiana | 30 min |
| Aug 31, 1:29 PM EDT | Special Weather Statement | PBZ | Greene | 46 min |
| Aug 31, 1:50 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 25 min |
| Aug 31, 2:02 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 43 min |
| Aug 31, 2:31 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 44 min |
| Aug 31, 12:50 PM EDT | Special Weather Statement | PBZ | Marshall, Ohio, Wetzel | 40 min |
| Aug 31, 1:52 PM EDT | Severe Thunderstorm Warning | PBZ | Marion, Monongalia, Wetzel | 38 min |
| Aug 31, 2:27 PM EDT | Special Weather Statement | PBZ | Marion, Monongalia | 48 min |
| Aug 31, 2:59 PM EDT | Special Weather Statement | PBZ | Preston | 31 min |
| Aug 31, 4:18 PM EDT | Severe Thunderstorm Warning | PBZ | Wetzel | 42 min |
| Aug 31, 4:57 PM EDT | Special Weather Statement | PBZ | Wetzel | 33 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2024Every flash flood warning in 2024
Sources
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.