Alert archive / Pennsylvania / Flash Flood Warnings in 2026

Flash Flood Warning 85, NWS Pittsburgh, PA

August 7, 2026Allegheny County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Aug 7, 2026, 4:29 PM EDT for Allegheny County, Westmoreland County, Pennsylvania. It was in force for 89 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 7, 2026, 4:29 PM EDT (20:29 UTC)
Expired: Aug 7, 2026, 5:58 PM EDT
In force: 89 min
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 20:28 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.5 hours before the alert went out and 255 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 514 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 1052 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 7, 3:17 PM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, Aug 7, 3:17 PM EDT, 1 hour 12 minutes before

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Hazardous weather outlook, Aug 7, 1:38 PM EDT, 2 hours 51 minutes before

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In the hours before

Local storm report, Aug 7, 1:58 PM EDT, 2 hours 31 minutes before

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Local storm report, Aug 7, 2:12 PM EDT, 2 hours 17 minutes before

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Local storm report, Aug 7, 3:09 PM EDT, 1 hour 20 minutes before

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Local storm report, Aug 7, 3:17 PM EDT, 1 hour 12 minutes before

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Local storm report, Aug 7, 3:32 PM EDT, 57 minutes before

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Local storm report, Aug 7, 4:23 PM EDT, 6 minutes before

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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 7, 9:28 AM EDT	Flash Flood Warning	PBZ	Armstrong, Indiana, Jefferson	3 hr
Aug 7, 10:40 AM EDT	Flash Flood Warning	PBZ	Armstrong, Butler, Clarion	3 hr
Aug 7, 11:45 AM EDT	Flash Flood Warning	PBZ	Armstrong, Clarion, Jefferson	94 min
Aug 7, 11:50 AM EDT	Flash Flood Warning	PBZ	Allegheny, Washington	2 hr
Aug 7, 12:27 PM EDT	Areal Flood Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	6 hr
Aug 7, 1:17 PM EDT	Areal Flood Warning	PBZ	Armstrong, Butler, Clarion, Jefferson	6 hr
Aug 7, 1:19 PM EDT	Areal Flood Warning	PBZ	Armstrong, Clarion, Jefferson	6 hr
Aug 7, 2:58 PM EDT	Flash Flood Warning	PBZ	Washington	3 hr
Aug 7, 4:03 PM EDT	Flash Flood Warning	PBZ	Allegheny	4 hr
Aug 7, 4:41 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	35 min
Aug 7, 5:07 PM EDT	Flash Flood Warning	PBZ	Fayette, Westmoreland	3 hr
Aug 7, 5:45 PM EDT	Flash Flood Warning	PBZ	Fayette, Westmoreland	3 hr
Aug 7, 5:58 PM EDT	Areal Flood Warning	PBZ	Allegheny, Westmoreland	3 hr
Aug 7, 6:54 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	51 min
Aug 7, 7:08 PM EDT	Flash Flood Warning	PBZ	Allegheny	76 min
Aug 7, 7:15 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	41 min
Aug 7, 2:19 PM EDT	Flash Flood Warning	PBZ	Monroe, Noble	2 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2026 Every 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.