Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 166, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 16, 2021, 3:11 PM EDT for Allegheny County, Beaver County, Washington County, Pennsylvania. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 16, 2021, 3:11 PM EDT (19:11 UTC)
- Expired
- Jul 16, 2021, 3:45 PM EDT
- In force
- 34 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Allegheny County, PA, Beaver County, PA, Washington County, PA
The radar
The Pittsburgh radar (KPBZ), 19 km from the middle of the area, began a volume at 19:14 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, 7.2 hours before the alert went out and 9 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
- 145 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
751
WUUS51 KPBZ 161911
SVRPBZ
PAC003-007-125-161945-
/O.NEW.KPBZ.SV.W.0166.210716T1911Z-210716T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
311 PM EDT Fri Jul 16 2021
The National Weather Service in Pittsburgh has issued a
* Severe Thunderstorm Warning for...
South central Beaver County in western Pennsylvania...
Northern Washington County in southwestern Pennsylvania...
Central Allegheny County in southwestern Pennsylvania...
* Until 345 PM EDT.
* At 311 PM EDT, a severe thunderstorm was located near McDonald, or
8 miles southwest of Moon Township, moving east at 40 mph.
HAZARD...Wind gusts to 60 mph.
SOURCE...Radar.
IMPACT...Expect damage to trees and power lines, resulting in some
power outages.
* Locations impacted include...
Pittsburgh... Mount Lebanon...
Bethel Park... Ross Township...
Moon Township... McMurray...
Canonsburg... Gastonville...
Shaler Township... West Mifflin...
North Side Pittsburgh... Baldwin...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 45 and 65.
Interstate 376 in Pennsylvania between mile markers 52 and 74.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a building.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4029 8043 4051 8040 4050 7997 4037 7989
4022 7998
TIME...MOT...LOC 1911Z 274DEG 34KT 4040 8029
HAIL...<.75IN
WIND...60MPH
$$2 follow-up statements
368
WWUS51 KPBZ 161922
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
322 PM EDT Fri Jul 16 2021
PAC003-007-125-161945-
/O.CON.KPBZ.SV.W.0166.000000T0000Z-210716T1945Z/
Beaver PA-Washington PA-Allegheny PA-
322 PM EDT Fri Jul 16 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR SOUTH CENTRAL BEAVER...NORTHERN WASHINGTON AND CENTRAL ALLEGHENY
COUNTIES...
At 322 PM EDT, a severe thunderstorm was located near
Sturgeon-Noblestown, or near Mount Lebanon, moving east at 40 mph.
HAZARD...Wind gusts to 60 mph.
SOURCE...Radar.
IMPACT...Expect damage to trees and power lines, resulting in some
power outages.
Locations impacted include...
Pittsburgh... Mount Lebanon...
Bethel Park... Ross Township...
Moon Township... McMurray...
Gastonville... Shaler Township...
West Mifflin... North Side Pittsburgh...
Baldwin... Upper St. Clair...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 49 and 65.
Interstate 376 in Pennsylvania between mile markers 52 and 74.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a building.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4034 8039 4051 8039 4050 7997 4049 7997
4037 7989 4032 7992 4027 7998
TIME...MOT...LOC 1922Z 274DEG 34KT 4039 8015
HAIL...<.75IN
WIND...60MPH
$$888
WWUS51 KPBZ 161943
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
343 PM EDT Fri Jul 16 2021
PAC003-007-125-161953-
/O.EXP.KPBZ.SV.W.0166.000000T0000Z-210716T1945Z/
Beaver PA-Washington PA-Allegheny PA-
343 PM EDT Fri Jul 16 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL BEAVER...
NORTHERN WASHINGTON AND CENTRAL ALLEGHENY COUNTIES WILL EXPIRE AT 345
PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
Remember, a Severe Thunderstorm Warning still remains in effect for
Eastern Allegheny County until 415 PM.
LAT...LON 4034 8039 4051 8039 4050 7997 4049 7997
4037 7989 4032 7992 4027 7998
TIME...MOT...LOC 1943Z 274DEG 34KT 4038 7995
$$The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 8:43 PM EDT | Special Weather Statement | PBZ | Mercer | 47 min |
| Jul 16, 1:04 PM EDT | Special Weather Statement | PBZ | Mercer | 41 min |
| Jul 16, 2:03 PM EDT | Special Weather Statement | PBZ | Beaver | 42 min |
| Jul 16, 2:27 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Lawrence | 48 min |
| Jul 16, 2:49 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Beaver, Butler, Clarion, Lawrence | 41 min |
| Jul 16, 2:54 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Westmoreland | 51 min |
| Jul 16, 3:23 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver | 37 min |
| Jul 16, 3:30 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion, Indiana, Jefferson | 45 min |
| Jul 16, 3:42 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 33 min |
| Jul 16, 3:56 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Jefferson | 49 min |
| Jul 16, 4:12 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 33 min |
| Jul 16, 4:19 PM EDT | Special Weather Statement | PBZ | Westmoreland | 26 min |
| Jul 16, 4:52 PM EDT | Special Weather Statement | PBZ | Washington | 23 min |
| Jul 16, 6:20 PM EDT | Special Weather Statement | PBZ | Westmoreland | 25 min |
| Jul 16, 6:57 PM EDT | Areal Flood Advisory | PBZ | Mercer, Venango | 27 min |
| Jul 16, 7:24 PM EDT | Flash Flood Warning | PBZ | Mercer, Venango | 3 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2021Every severe thunderstorm warning in 2021
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.