PITTSBURGH — Localized flooding will continue overnight as a line of strong storms moves through. Strong wind gusts may also bring isolated wind damage, but the storm threat will end before sunrise.
Areas of fog will form early Friday and could reduce visibility in many areas. Check the live Severe Weather Team 11 forecast before you head out for the latest updates on how fog will impact your morning commute.
A stray shower is still possible Friday, but most areas will stay dry. Less humid, more comfortable weather moves in for the weekend.
>> RELATED COVERAGE: PHOTOS: Severe storms move through Western Pennsylvania
LIVE UPDATES BELOW:
11:45 p.m.: Here are the power outages reported by West Penn Power:
Allegheny County: 258
Armstrong County: 167
Beaver County: 57
Butler County: 97
Fayette County: 3,958
Forest County: 294
Indiana County: 121
Jefferson County: 740
Lawrence County: 27
Mercer County: 400
Venango County: 304
Washington County: 1,663
Westmoreland County: 3,960
Duquesne Light reports 831 customers are impacted by 36 outages.
11:05 p.m.: A FLASH FLOOD WARNING is in effect for parts of Allegheny, Fayette, Washington, Westmoreland and Indiana counties until 2:15 a.m.
11 p.m.: The National Weather Service is reporting flooding on State Road 51 in Beaver County. One storm report indicates there is 1.5 feet of water on the road near Conway. Another indicates the road is closed in South Heights because of flooding.
10:45 p.m.: Here are the power outages reported by First Energy:
Armstrong County: 72
Beaver County: 138
Butler County: 127
Lawrence County: 86
Mercer County: 496
Venango County: 304
Washington County: 67
Westmoreland County: 189
Duquesne Light reports 584 customers are impacted by outages.
10:30 p.m.: A FLASH FLOOD WARNING is in effect for all of Allegheny County, including Pittsburgh, until 1:30 a.m.
The warning is also in effect for parts of Washington, Westmoreland, Armstrong, Butler, Indiana and Beaver counties.
Flash Flood Warning including Pittsburgh PA, Bethel Park PA and Monroeville PA until 1:30 AM EDT pic.twitter.com/LNENjFaTkw
— NWS Pittsburgh (@NWSPittsburgh) July 21, 2023
10:20 p.m.: All SEVERE THUNDERSTORM WARNINGS in the region have expired.
10:15 p.m.: A SEVERE THUNDERSTORM WATCH has been canceled for Butler, Clarion, Forest, Jefferson, Lawrence, Mercer and Venango counties. The watch remains in effect for the rest of western Pennsylvania until 3 a.m.
The Severe Thunderstorm Watch has been cancelled for Butler, Clarion, Forest, Jefferson, Lawrence, Mercer, and Venango Counties (PA).
— NWS Pittsburgh (@NWSPittsburgh) July 21, 2023
The rest of the watch remains remain in effect through 3am EDT.https://t.co/Sy8yB226EY
9:45 p.m.: Both First Energy and Duqene Light are now reporting power outages.
Here are the outages reported by West Penn Power:
Beaver County: 137
Lawrence County: 81
Mercer County: 529
Venango County: 303
Here are the outages reported by Duquesne Light:
West Mayfield (Northern Beaver County): 252
9:40 p.m.: A Channel 11 reporter spots lightning as storms move toward Cranberry. In addition to lightning, the storm brings strong wind gusts and the threat of flooding rain.
The skies over Cranberry @WPXI pic.twitter.com/abMtikIpmW
— Rich Pierce (@RichPierceWPXI) July 21, 2023
A FLASH FLOOD WARNING is in effect for parts of Armstrong, Butler, Beaver and Lawrence counties until 12:45 a.m.
NWS tweeted that the damaging wind threat is diminishing, but the flooding risk is increasing in some areas as storms slow down.
9:40pm Radar Update:
— NWS Pittsburgh (@NWSPittsburgh) July 21, 2023
The damaging wind threat is diminishing (but remains non-zero) as storms enter eastern OH and western PA.
The risk for flooding is increasing within the highlighted area as storms start to more southward more slowly. Continue to be weather aware tonight! pic.twitter.com/fFWvdidYPe
9:35 p.m.: A SEVERE THUNDERSTORM WARNING is in effect for parts of Indiana County until 10:15 p.m
9:30 p.m.: A SEVERE THUNDERSTORM WARNING is in effect for parts of Westmoreland County until 10:15 p.m
9:10 p.m.: A SEVERE THUNDERSTORM WARNING is in effect for parts of Allegheny County, including Pittsburgh, until 10:15 p.m.
SEVERE THUNDERSTORM WARNING has been issued for the shaded portion of Allegheny county. Take precautions now.
— Stephen Cropper (@WPXICropper) July 21, 2023
Interactive radar: https://t.co/ym2MDP8I4G
Download the FREE Severe Weather Team 11 App for alerts: https://t.co/nvDLl8sHag #WPXI #WPXIStorm #SevereWeather #PAWX pic.twitter.com/i6kWtWU8gz
9:10 p.m.: A FLASH FLOOD WARNING is in effect for Butler, Lawrence and Mercer counties.
Flash Flood Warning Butler, Lawrence, Mercer. Watch for quickly changing road conditions. Do not drive through flooded roadways. LIVE tracking Channel 11 News. pic.twitter.com/ilXwXi0Xwo
— Stephen Cropper (@WPXICropper) July 21, 2023
9 p.m.: First Energy reports 524 customers remain without power in Mercer County and 259 in Venango County.
8:50 p.m.: A SEVERE THUNDERSTORM WARNING is in effect for part of Beaver County until 9:45 p.m.
8:45 p.m.: A FLASH FLOOD WARNING is in effect for parts of Mercer and Venango counties until 11:15 p.m.
8:30 p.m.: A TORNADO WARNING in Mercer and Venango counties has expired.
8:27 p.m.: A SEVERE THUNDERSTORM WARNING has been issued for Armstrong and Indiana counties until 9:15 p.m. SEVERE THUNDERSTORM WARNINGS for Butler, Lawrence and Mercer counties were also extended until 9:15 p.m.
8:15 p.m.: First Energy reports power outages in Mercer and Venango counties. There are 483 customers impacted in Mercer and 141 in Venango.
Duquesne Light had not reported any outages as of 8:15 p.m.
8:05 p.m.: A TORNADO WARNING is in effect for part of Mercer and Venango counties until 8:30 p.m.
TORNADO WARNING-Mercer, Venango-Fast moving line-stay weather aware. pic.twitter.com/YeW54SgIJJ
— Stephen Cropper (@WPXICropper) July 21, 2023
7:54 p.m.: A SEVERE THUNDERSTORM WARNING is in effect for part of Armstrong County.
SEVERE THUNDERSTORM WARNING has been issued for the shaded portion of Armstrong county. Take precautions now.
— Stephen Cropper (@WPXICropper) July 20, 2023
Interactive radar: https://t.co/ym2MDP8I4G
Download the FREE Severe Weather Team 11 App for alerts: https://t.co/nvDLl8sHag #WPXI #WPXIStorm #SevereWeather #PAWX pic.twitter.com/3MQK2XfsVQ
7:44 p.m.: A SEVERE THUNDERSTORM WARNING is in effect for part of Clarion and Butler counties.
7:40 p.m.: Strong storms approach Beaver, West Liberty and Zelienople.
Beaver, West Liberty, Zelienople-strong storms headed your way. Watch for quickly changing conditions. LIVE tracking Channel 11 News. pic.twitter.com/yL5v824wDo
— Stephen Cropper (@WPXICropper) July 20, 2023
6:56 p.m.: A SEVERE THUNDERSTORM WARNING is in effect for Butler, Mercer and Lawrence counties.
Severe Thunderstorm Warning including New Castle PA, Hermitage PA and Sharon PA until 7:45 PM EDT pic.twitter.com/FeaeGuwKBd
— NWS Pittsburgh (@NWSPittsburgh) July 20, 2023
6:20 p.m.: A SEVERE THUNDERSTORM WATCH is in effect for all of Western Pennsylvania until 3 a.m.
A severe thunderstorm watch has been issued for parts of Maryland, New York, Ohio, Pennsylvania and West Virginia until 3 AM EDT pic.twitter.com/zNuWSNumUW
— NWS Pittsburgh (@NWSPittsburgh) July 20, 2023
LATEST FORECAST:
Storms are expected to develop around sunset and continue into early Friday morning.
Get the latest track and timing live on Channel 11 News and have the Severe Weather Team 11 app when you are away from your television.
The severe weather threat will decrease by Friday with an isolated shower still possible.
Download the WPXI Weather App to stay aware of changing weather conditions.
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