Alert archive / Pennsylvania / Flash Flood Warnings in 2026
Flash Flood Warning 97, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Aug 11, 2026, 1:47 AM EDT for Fayette 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
- Aug 11, 2026, 1:47 AM EDT (05:47 UTC)
- Expired
- Aug 11, 2026, 4:45 AM EDT
- In force
- 3 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
County Fayette County, PA
The radar
The Pittsburgh radar (KPBZ), 84 km from the middle of the area, began a volume at 05:47 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 00:00Z, 5.8 hours before the alert went out and 67 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
- 1554 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 691 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 264 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 12.1
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 10, 7:45 PM EDT, 6 hours 2 minutes earlier.
Area forecast discussion, Aug 10, 7:45 PM EDT, 6 hours 2 minutes before
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</html>Hazardous weather outlook, Aug 10, 1:41 PM EDT, 12 hours 6 minutes before
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Local storm report, Aug 11, 1:12 AM EDT, 35 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 11, 2:56 AM EDT | Flash Flood Warning | PBZ | Fayette | 106 min |
| Aug 11, 4:45 AM EDT | Areal Flood Warning | PBZ | Fayette, Westmoreland | 4 hr |
| Aug 11, 9:37 AM EDT | River Flood Warning | PBZ | Fayette | 3 hr |
| Aug 10, 11:34 PM EDT | Severe Thunderstorm Warning | PBZ | Belmont, Harrison, Jefferson | 24 min |
| Aug 10, 11:43 PM EDT | Flash Flood Warning | PBZ | Muskingum | 3 hr |
| Aug 10, 11:47 PM EDT | Flash Flood Warning | PBZ | Belmont, Harrison, Jefferson | 3 hr |
| Aug 11, 12:04 AM EDT | Flash Flood Warning | PBZ | Coshocton, Guernsey, Muskingum | 3 hr |
| Aug 11, 1:18 AM EDT | Flash Flood Warning | PBZ | Belmont | 3 hr |
| Aug 11, 2:20 AM EDT | Flash Flood Warning | PBZ | Carroll, Columbiana | 3 hr |
| Aug 11, 2:43 AM EDT | Areal Flood Warning | PBZ | Muskingum | 6 hr |
| Aug 11, 7:18 AM EDT | Flash Flood Warning | PBZ | Coshocton, Guernsey, Muskingum, Noble, Tuscarawas | 7 hr |
| Aug 11, 7:33 AM EDT | Flash Flood Warning | PBZ | Carroll, Columbiana, Tuscarawas | 4 hr |
| Aug 11, 7:35 AM EDT | Severe Thunderstorm Warning | PBZ | Coshocton, Guernsey, Muskingum, Tuscarawas | 40 min |
| Aug 11, 8:09 AM EDT | Severe Thunderstorm Warning | PBZ | Belmont, Carroll, Coshocton, Guernsey, Harrison, Muskingum and 2 more | 51 min |
| Aug 11, 8:45 AM EDT | Flash Flood Warning | PBZ | Belmont, Guernsey, Monroe, Noble | 6 hr |
| Aug 11, 8:47 AM EDT | Severe Thunderstorm Warning | PBZ | Monroe, Noble | 17 min |
| Aug 11, 10:38 AM EDT | Severe Thunderstorm Warning | PBZ | Coshocton, Muskingum, Noble | 52 min |
| Aug 11, 11:19 AM EDT | Severe Thunderstorm Warning | PBZ | Belmont, Guernsey, Monroe, Muskingum, Noble | 41 min |
| Aug 11, 11:53 AM EDT | Severe Thunderstorm Warning | PBZ | Monroe, Noble | 29 min |
| Aug 11, 2:03 PM EDT | Areal Flood Warning | PBZ | Coshocton, Guernsey, Muskingum, Noble | 13 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2026Every flash flood warning in 2026
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.