Alert archive / Pennsylvania / Flash Flood Warnings in 2025

Flash Flood Warning 32, NWS Pittsburgh, PA

June 6, 2025Allegheny County, Beaver County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 6, 2025, 9:02 PM EDT for Allegheny County, Beaver County, Pennsylvania. It was in force for 118 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
Jun 6, 2025, 9:02 PM EDT (01:02 UTC)
Expired
Jun 6, 2025, 11:00 PM EDT
In force
118 min
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Flood severity
None

Counties Allegheny County, PA, Beaver County, PA

The radar

The Pittsburgh radar (KPBZ), 7 km from the middle of the area, began a volume at 01:04 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 00:00Z, 1.0 hours before the alert went out and 19 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-pSkew-T log-p diagram, Pittsburgh, PA at 00:00Z on 2025-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 438 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 00:00Z on 2025-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
438 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
766 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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 Jun 6, 7:44 PM EDT, 1 hour 18 minutes earlier.

Area forecast discussion, Jun 6, 7:44 PM EDT, 1 hour 18 minutes before
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Hazardous weather outlook, Jun 6, 3:41 PM EDT, 5 hours 21 minutes before
Hazardous Weather Outlook
National Weather Service Pittsburgh PA
341 PM EDT Fri Jun 6 2025

OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>022-029-
031-073>078-WVZ001>004-012-021-509>514-071945-
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-
Eastern Preston-Western Tucker-Eastern Tucker-
341 PM EDT Fri Jun 6 2025

This Hazardous Weather Outlook is for east central Ohio, western
Pennsylvania, and northern West Virginia.

.DAY ONE...This afternoon and tonight.

Rounds of showers and thunderstorms are expected into this evening in
the vicinity of a stationary front across the region. There is a
Marginal Risk, or level 1 out of 5, for severe thunderstorms into the
early evening. The main hazard is expected to be damaging wind
gusts, although large hail is a possibility.

In addition, heavy rainfall rates may lead to additional instances
of flash flooding are possible into this evening, especially for
areas that see multiple heavy thunderstorms.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Another round of severe weather is a possibility Sunday, with
Marginal (1 out of 5) risk in effect for areas south and east of
Pittsburgh currently, although this risk could expand. Locally heavy
rainfall is possible Sunday as well.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

CL

In the hours before

Local storm report, Jun 6, 7:37 PM EDT, 1 hour 25 minutes before
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Local storm report, Jun 6, 7:39 PM EDT, 1 hour 23 minutes before
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Local storm report, Jun 6, 8:00 PM EDT, 1 hour 2 minutes before
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Local storm report, Jun 6, 8:10 PM EDT, 52 minutes before
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Local storm report, Jun 6, 8:34 PM EDT, 28 minutes before
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Local storm report, Jun 6, 8:40 PM EDT, 22 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 5:31 PM EDTFlood WatchPBZAllegheny, Beaver, Fayette, Greene, Washington, Westmoreland26 hr
Jun 7, 4:59 AM EDTFlash Flood WarningPBZPreston, Tucker5 hr
Jun 7, 6:03 AM EDTFlash Flood WarningPBZMarion, Monongalia, Preston4 hr
Jun 7, 4:09 AM EDTAreal Flood WarningPBZNoble18 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2025Every flash flood warning in 2025

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.