Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 55, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 20, 2021, 6:14 PM EDT for Mercer County, Venango County, Pennsylvania. It was in force for 17 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
- Jun 20, 2021, 6:14 PM EDT (22:14 UTC)
- Expired
- Jun 20, 2021, 6:31 PM EDT
- In force
- 17 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Mercer County, PA, Venango County, PA
The radar
The Pittsburgh radar (KPBZ), 82 km from the middle of the area, began a volume at 22:17 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, 10.2 hours before the alert went out and 94 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
- 1056 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.2
The text
As transmitted.
604
WUUS51 KPBZ 202214
SVRPBZ
PAC085-121-202245-
/O.NEW.KPBZ.SV.W.0055.210620T2214Z-210620T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
614 PM EDT Sun Jun 20 2021
The National Weather Service in Pittsburgh has issued a
* Severe Thunderstorm Warning for...
East central Mercer County in northwestern Pennsylvania...
Southwestern Venango County in northwestern Pennsylvania...
* Until 645 PM EDT.
* At 614 PM EDT, a severe thunderstorm was located 11 miles southeast
of Greenville, or 11 miles east of Hermitage, moving east at 25
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...
Franklin... Mercer...
Stoneboro... Polk...
Sandy Lake... Clintonville...
Fredonia... Jackson Center...
Barkeyville... Maurice K Goddard State Park...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 119 and 130.
Interstate 80 in Pennsylvania between mile markers 23 and 35.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter indoors and stay away from windows.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4117 7986 4117 7993 4122 8026 4138 8025
4142 7987
TIME...MOT...LOC 2214Z 270DEG 20KT 4129 8023
HAIL...<.75IN
WIND...60MPH
$$2 follow-up statements
576
WWUS51 KPBZ 202225
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
625 PM EDT Sun Jun 20 2021
PAC085-121-202245-
/O.CON.KPBZ.SV.W.0055.000000T0000Z-210620T2245Z/
Mercer PA-Venango PA-
625 PM EDT Sun Jun 20 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR EAST CENTRAL MERCER AND SOUTHWESTERN VENANGO COUNTIES...
At 625 PM EDT, a severe thunderstorm was located 9 miles north of
Grove City, moving east at 25 mph.
HAZARD...Wind gusts to 60 mph.
SOURCE...Radar.
IMPACT...Expect damage to trees and power lines, resulting in some
power outages.
Locations impacted include...
Franklin... Mercer...
Stoneboro... Polk...
Sandy Lake... Clintonville...
Fredonia... Jackson Center...
Barkeyville... Maurice K Goddard State Park...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 119 and 130.
Interstate 80 in Pennsylvania between mile markers 23 and 35.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter indoors and stay away from windows.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4117 7986 4117 7993 4122 8026 4138 8025
4142 7987
TIME...MOT...LOC 2225Z 270DEG 20KT 4129 8014
HAIL...<.75IN
WIND...60MPH
$$698
WWUS51 KPBZ 202231
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
631 PM EDT Sun Jun 20 2021
PAC085-121-202241-
/O.CAN.KPBZ.SV.W.0055.000000T0000Z-210620T2245Z/
Mercer PA-Venango PA-
631 PM EDT Sun Jun 20 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MERCER AND
SOUTHWESTERN VENANGO COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
LAT...LON 4117 7986 4117 7993 4122 8026 4138 8025
4142 7987
TIME...MOT...LOC 2230Z 270DEG 20KT 4129 8009
$$The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 9:31 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 29 min |
| Jun 19, 10:00 PM EDT | Special Weather Statement | PBZ | Beaver | 30 min |
| Jun 19, 10:30 PM EDT | Special Weather Statement | PBZ | Beaver | 30 min |
| Jun 19, 11:00 PM EDT | Special Weather Statement | PBZ | Allegheny | 30 min |
| Jun 19, 11:07 PM EDT | Special Weather Statement | PBZ | Mercer | 23 min |
| Jun 19, 11:30 PM EDT | Special Weather Statement | PBZ | Mercer | 30 min |
| Jun 19, 11:57 PM EDT | Special Weather Statement | PBZ | Mercer | 33 min |
| Jun 20, 5:38 PM EDT | Special Weather Statement | PBZ | Mercer | 22 min |
| Jun 20, 6:48 PM EDT | Special Weather Statement | PBZ | Venango | 27 min |
| Jun 20, 6:51 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 24 min |
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.