Alert archive / Pennsylvania / Flash Flood Warnings in 2023
Flash Flood Warning 4, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Jul 1, 2023, 6:28 PM EDT for Beaver County, Lawrence County, Pennsylvania. It was in force for 108 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
- Jul 1, 2023, 6:28 PM EDT (22:28 UTC)
- Expired
- Jul 1, 2023, 8:16 PM EDT
- In force
- 108 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Beaver County, PA, Lawrence County, PA
The radar
The Pittsburgh radar (KPBZ), 35 km from the middle of the area, began a volume at 22:28 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
Pittsburgh, PA (KPIT), launched 12:00Z, 10.5 hours before the alert went out and 52 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
- 516 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 1, 5:54 PM EDT, 34 minutes earlier.
Area forecast discussion, Jul 1, 5:54 PM EDT, 34 minutes before
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</html>Hazardous weather outlook, Jul 1, 2:15 PM EDT, 4 hours 13 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 215 PM EDT Sat Jul 1 2023 OHZ039>041-048>050-PAZ007>009-013>016-020>022-073-074-077-078-WVZ001- 002-021815- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-Mercer- Venango-Forest-Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny- Armstrong-Westmoreland-Higher Elevations of Westmoreland-Indiana- Higher Elevations of Indiana-Hancock-Brooke- 215 PM EDT Sat Jul 1 2023 This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...This afternoon and tonight. Isolated severe thunderstorms are possible this evening, though uncertainty in development remains. If the threat develops, the main concern will be damaging wind gusts. Thunderstorms may also produce locally heavy rainfall, which could lead to isolated flash flooding. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Isolated severe thunderstorms will be possible again on Sunday afternoon and evening. Damaging wind and hail will be the primary threats. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. OHZ057>059-068-069-PAZ029-031-075-076-WVZ003-004-012-021-509>514- 021815- Muskingum-Guernsey-Belmont-Noble-Monroe-Washington-Greene-Fayette- Higher Elevations of Fayette-Ohio-Marshall-Wetzel-Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 215 PM EDT Sat Jul 1 2023 This Hazardous Weather Outlook is for east central Ohio, southwest Pennsylvania, and northern West Virginia. .DAY ONE...This afternoon and tonight. Isolated severe thunderstorms are possible this evening, though uncertainty in development remains. If the threat develops, the main concern will be damaging wind gusts. Thunderstorms may also produce locally heavy rainfall, which could lead to isolated flash flooding. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Scattered severe thunderstorms will be possible again on Sunday afternoon and evening. Damaging wind and hail will be the primary threats. Thunderstorms may also produce locally heavy rainfall, which could lead to isolated flash flooding. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
In the hours before
Special weather statement, Jul 1, 2:07 PM EDT, 4 hours 21 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
207 PM EDT Sat Jul 1 2023
PAZ077-078-011830-
Higher Elevations of Indiana PA-Indiana PA-
207 PM EDT Sat Jul 1 2023
...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL INDIANA COUNTY
THROUGH 230 PM EDT...
At 207 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles west of Northern Cambria, or 11 miles east of Indiana, moving
east at 25 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Clymer, Cherry Tree, Dixonville, Commodore, and Yellow Creek State
Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4072 7881 4057 7888 4055 7902 4070 7907
4081 7881 4072 7880
TIME...MOT...LOC 1807Z 248DEG 20KT 4065 7895
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
MilcarekThe office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 12:01 PM EDT | Special Weather Statement | PBZ | Beaver | 29 min |
| Jul 1, 2:07 PM EDT | Special Weather Statement | PBZ | Indiana | 23 min |
| Jul 1, 3:38 PM EDT | Flash Flood Warning | PBZ | Allegheny, Butler, Westmoreland | 62 min |
| Jul 1, 5:15 PM EDT | Flash Flood Warning | PBZ | Indiana, Westmoreland | 110 min |
| Jul 1, 6:06 PM EDT | Flash Flood Warning | PBZ | Beaver | 4 hr |
| Jul 1, 6:55 PM EDT | Flash Flood Warning | PBZ | Allegheny, Beaver, Butler, Westmoreland | 3 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2023Every flash flood warning in 2023
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.