Alert archive / Pennsylvania / Flash Flood Warnings in 2019
Flash Flood Warning 93, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Jul 22, 2019, 1:04 PM EDT for Allegheny County, Westmoreland County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 22, 2019, 1:04 PM EDT (17:04 UTC)
- Expired
- Jul 22, 2019, 4:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Allegheny County, PA, Westmoreland County, PA
The radar
The Pittsburgh radar (KPBZ), 45 km from the middle of the area, began a volume at 17:04 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, 5.1 hours before the alert went out and 32 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
- 189 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 640 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 Jul 22, 11:07 AM EDT, 1 hour 57 minutes earlier.
Area forecast discussion, Jul 22, 11:07 AM EDT, 1 hour 57 minutes before
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</html>Hazardous weather outlook, Jul 22, 4:02 AM EDT, 9 hours 2 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 402 AM EDT Mon Jul 22 2019 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-022-023- WVZ001>003-230815- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest- Lawrence-Butler-Clarion-Jefferson PA-Armstrong-Indiana-Hancock- Brooke-Ohio- 402 AM EDT Mon Jul 22 2019 This Hazardous Weather Outlook is for east central Ohio, northwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ020-021-029-073-230815- Beaver-Allegheny-Washington-Westmoreland- 402 AM EDT Mon Jul 22 2019 ...FLASH FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for southwest Pennsylvania and western Pennsylvania. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MDZ001-PAZ031-075-076-WVZ004-012-021-509>514-230815- Garrett-Greene-Fayette-Fayette Ridges-Marshall-Wetzel-Marion- Monongalia-Ridges of Eastern Monongalia and Northwestern Preston- Preston-Eastern Preston-Western Tucker-Eastern Tucker- 402 AM EDT Mon Jul 22 2019 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... This Hazardous Weather Outlook is for western Maryland, southwest Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Isolated severe storms are possible today. The main threat will be damaging wind gusts. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ074-230815- Westmoreland Ridges- 402 AM EDT Mon Jul 22 2019 ...FLASH FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for southwest Pennsylvania. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Isolated severe storms are possible today. The main threat will be damaging wind gusts. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Jul 22, 9:52 AM EDT, 3 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
952 AM EDT MON JUL 22 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1100 AM FLOOD 1 W COTTAGE HILL 41.01N 79.36W
07/20/2019 CLARION PA EMERGENCY MNGR
WIDESPREAD FLOODING. NEW BETHLEHEM BOROUGH DECLARED
LOCAL DISASTER.
&&
EVENT NUMBER PBZ1902772
MBLocal storm report, Jul 22, 10:01 AM EDT, 3 hours 3 minutes before
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</html>Local storm report, Jul 22, 10:33 AM EDT, 2 hours 31 minutes before
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</html>Local storm report, Jul 22, 12:06 PM EDT, 58 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 |
|---|---|---|---|---|
| Jul 21, 8:41 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Washington | 34 min |
| Jul 21, 9:28 PM EDT | Flash Flood Warning | PBZ | Allegheny, Fayette, Washington, Westmoreland | 3 hr |
| Jul 21, 9:40 PM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 3 hr |
| Jul 21, 11:45 PM EDT | Areal Flood Advisory | PBZ | Clarion, Jefferson | 3 hr |
| Jul 22, 12:15 AM EDT | Areal Flood Warning | PBZ | Allegheny, Westmoreland | 12 hr |
| Jul 22, 12:52 AM EDT | Flash Flood Watch | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 19 hr |
| Jul 22, 12:13 PM EDT | Areal Flood Advisory | PBZ | Armstrong, Butler, Indiana, Jefferson | 3 hr |
| Jul 22, 1:38 PM EDT | Areal Flood Advisory | PBZ | Washington | 2 hr |
| Jul 22, 3:49 PM EDT | Areal Flood Advisory | PBZ | Fayette | 116 min |
| Jul 22, 1:48 AM EDT | Areal Flood Advisory | PBZ | Muskingum | 2 hr |
| Jul 22, 2:29 AM EDT | Flash Flood Warning | PBZ | Muskingum | 66 min |
| Jul 22, 4:37 PM EDT | Areal Flood Advisory | PBZ | Monongalia | 113 min |
| Jul 22, 5:15 PM EDT | Areal Flood Advisory | PBZ | Marion | 2 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2019Every flash flood warning in 2019
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.