Alert archive / Pennsylvania / River Flood Warnings in 2026

River Flood Warning 9, NWS Pittsburgh, PA

August 11, 2026Fayette County, Pennsylvania

NWS Pittsburgh, PA issued this river flood warning at Aug 11, 2026, 9:37 AM EDT for Fayette County, Pennsylvania. It took effect at Aug 11, 2026, 9:47 AM EDT. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Aug 11, 2026, 9:37 AM EDT (13:37 UTC)
In effect from: Aug 11, 2026, 9:47 AM EDT
Expired: Aug 11, 2026, 12:30 PM EDT
In force: 3 hr
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Flood severity: Minor

County Fayette County, PA

The radar

The Pittsburgh radar (KPBZ), 84 km from the middle of the area, began a volume at 13:37 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 river

Written for the forecast point Youghiogheny River at Connellsville (CLLP1). The gauge peaked at 12.27 ft at Aug 11, 2026, 10:00 AM EDT.

Action stage: 9 ft
Minor stage: 12 ft
Moderate stage: 16 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 03082500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river 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 river flood warning went out at Aug 11, 7:52 AM EDT, 1 hour 45 minutes earlier.

Area forecast discussion, Aug 11, 7:52 AM EDT, 1 hour 45 minutes before

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Hazardous weather outlook, Aug 11, 7:26 AM EDT, 2 hours 11 minutes before

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
726 AM EDT Tue Aug 11 2026

PAZ007>009-013>016-022-077-078-121130-
Mercer-Venango-Forest-Lawrence-Butler-Clarion-Jefferson PA-Armstrong-
Indiana-Higher Elevations of Indiana-
726 AM EDT Tue Aug 11 2026

This Hazardous Weather Outlook is for western Pennsylvania.

.DAY ONE...Today and tonight.

There is a Marginal (level 1 of 5) Risk of severe thunderstorms this
afternoon and tonight. Damaging wind gusts are the primary threat.
Also, isolated instances of flash flooding will remain possible in
areas that already have saturated soil and that receive additional
heavy rain from thunderstorms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

OHZ039>041-048>050-057>059-068-069-PAZ020-021-029-031-073>076-
WVZ001>004-012-021-509>514-121130-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-
Muskingum-Guernsey-Belmont-Noble-Monroe-Beaver-Allegheny-Washington-
Greene-Westmoreland-Higher Elevations of Westmoreland-Fayette-
Higher Elevations of Fayette-Hancock-Brooke-Ohio-Marshall-Wetzel-
Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
726 AM EDT Tue Aug 11 2026

...FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING...

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

   Flood Watch.

Also, severe thunderstorms are possible during the late afternoon
and evening hours. Damaging wind gusts are the primary concern, and
the potential for significant gusts (65-75 MPH) may increase in
portions of eastern Ohio if the track of an expected convective
complex trends more northward.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Milcarek

In the hours before

Local storm report, Aug 11, 6:17 AM EDT, 3 hours 20 minutes before

Preliminary Local Storm Report
National Weather Service Pittsburgh PA
617 AM EDT Tue Aug 11 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0430 AM     Flash Flood      4 NE Markleysburg       39.78N 79.41W
08/11/2026                   Fayette            PA   Public

            Report of Tub Run Road flooded and
            impassable. Time estimated based on radar.

&&

JF

Local storm report, Aug 11, 8:46 AM EDT, 51 minutes before

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Local storm report, Aug 11, 8:54 AM EDT, 43 minutes before

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Local storm report, Aug 11, 9:13 AM EDT, 24 minutes before

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Local storm report, Aug 11, 9:35 AM EDT, 2 minutes before

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Local storm report, Aug 11, 9:36 AM EDT, 1 minute before

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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 11, 1:47 AM EDT	Flash Flood Warning	PBZ	Fayette	3 hr
Aug 11, 2:56 AM EDT	Flash Flood Warning Considerable damage threat	PBZ	Fayette	106 min
Aug 11, 4:45 AM EDT	Areal Flood Warning	PBZ	Fayette, Westmoreland	4 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 Considerable damage threat	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

River Flood Warnings in Pennsylvania, 2026 Every river 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.