Alert archive / Pennsylvania / Flash Flood Warnings in 2019
Flash Flood Warning 102, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Aug 18, 2019, 6:10 PM EDT for Mercer County, Pennsylvania. It was in force for 90 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 18, 2019, 6:10 PM EDT (22:10 UTC)
- Expired
- Aug 18, 2019, 7:40 PM EDT
- In force
- 90 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
County Mercer County, PA
The radar
The Pittsburgh radar (KPBZ), 86 km from the middle of the area, began a volume at 22:11 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, 10.2 hours before the alert went out and 100 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
- 566 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1315 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
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 18, 5:16 PM EDT, 54 minutes earlier.
Area forecast discussion, Aug 18, 5:16 PM EDT, 54 minutes before
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Hazardous Weather Outlook National Weather Service Pittsburgh PA 404 AM EDT Sun Aug 18 2019 MDZ001-OHZ059-068-069-PAZ031-074>076-WVZ004-012-021-509>514-190815- Garrett-Belmont-Noble-Monroe-Greene-Westmoreland Ridges-Fayette- Fayette Ridges-Marshall-Wetzel-Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 404 AM EDT Sun Aug 18 2019 This Hazardous Weather Outlook is for western Maryland, east central Ohio, southwest Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. OHZ039>041-048>050-057-058-PAZ007>009-013>016-020>023-029-073- WVZ001>003-190815- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-Guernsey-Mercer-Venango-Forest-Lawrence-Butler-Clarion- Jefferson PA-Beaver-Allegheny-Armstrong-Indiana-Washington- Westmoreland-Hancock-Brooke-Ohio- 404 AM EDT Sun Aug 18 2019 This Hazardous Weather Outlook is for east central Ohio, northwest Pennsylvania, southwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and tonight. Isolated severe storms are possible this afternoon and evening. Damaging wind gusts or a moisture laden downburst is possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
In the hours before
Local storm report, Aug 18, 4:33 PM EDT, 1 hour 37 minutes before
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</html>Special weather statement, Aug 18, 5:34 PM EDT, 36 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 18, 8:34 AM EDT | Special Weather Statement | PBZ | Venango | 26 min |
| Aug 18, 12:35 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion, Jefferson | 27 min |
| Aug 18, 1:05 PM EDT | Special Weather Statement | PBZ | Jefferson | 40 min |
| Aug 18, 1:19 PM EDT | Special Weather Statement | PBZ | Washington | 41 min |
| Aug 18, 2:02 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Washington, Westmoreland | 43 min |
| Aug 18, 2:08 PM EDT | Special Weather Statement | PBZ | Clarion | 37 min |
| Aug 18, 2:13 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion, Jefferson | 47 min |
| Aug 18, 2:17 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 43 min |
| Aug 18, 2:21 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 39 min |
| Aug 18, 2:26 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 49 min |
| Aug 18, 2:48 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Jefferson | 28 min |
| Aug 18, 2:50 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 28 min |
| Aug 18, 2:52 PM EDT | Special Weather Statement | PBZ | Fayette | 23 min |
| Aug 18, 3:00 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 45 min |
| Aug 18, 3:23 PM EDT | Special Weather Statement | PBZ | Fayette | 37 min |
| Aug 18, 3:29 PM EDT | Special Weather Statement | PBZ | Fayette | 31 min |
| Aug 18, 3:33 PM EDT | Special Weather Statement | PBZ | Indiana | 27 min |
| Aug 18, 3:35 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Jefferson | 13 min |
| Aug 18, 3:38 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Washington, Westmoreland | 18 min |
| Aug 18, 4:21 PM EDT | Special Weather Statement | PBZ | Allegheny | 24 min |
| Aug 18, 4:58 PM EDT | Special Weather Statement | PBZ | Mercer | 32 min |
| Aug 18, 5:26 PM EDT | Special Weather Statement | PBZ | Clarion, Forest | 19 min |
| Aug 18, 5:30 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest, Jefferson, Venango | 45 min |
| Aug 18, 5:34 PM EDT | Special Weather Statement | PBZ | Mercer | 26 min |
| Aug 18, 5:38 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 52 min |
| Aug 18, 5:47 PM EDT | Areal Flood Advisory | PBZ | Mercer | 3 hr |
| Aug 18, 6:11 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest, Jefferson | 34 min |
| Aug 18, 6:22 PM EDT | Special Weather Statement | PBZ | Forest, Venango | 23 min |
| Aug 18, 7:06 PM EDT | Special Weather Statement | PBZ | Forest | 24 min |
| Aug 18, 7:27 PM EDT | Special Weather Statement | PBZ | Mercer | 33 min |
| Aug 18, 7:29 PM EDT | Special Weather Statement | PBZ | Clarion | 31 min |
| Aug 18, 7:55 PM EDT | Special Weather Statement | PBZ | Mercer | 35 min |
| Aug 18, 2:34 PM EDT | Special Weather Statement | PBZ | Noble | 26 min |
| Aug 18, 5:09 PM EDT | Special Weather Statement | PBZ | Tucker | 21 min |
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.