Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 53, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 19, 2021, 6:47 PM EDT for 4 counties in Pennsylvania. It was in force for 43 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 19, 2021, 6:47 PM EDT (22:47 UTC)
- Expired
- Jun 19, 2021, 7:30 PM EDT
- In force
- 43 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Butler County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA
The radar
The Pittsburgh radar (KPBZ), 71 km from the middle of the area, began a volume at 22:50 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 19, 6:55 PM EDT | TSTM WND DMG | Charleston, PA | A TREE WAS BLOWN DOWN ACROSS POWERLINES ALONG HIGHWAY 62. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 10.8 hours before the alert went out and 86 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
- 205 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 1005 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
434
WUUS51 KPBZ 192247
SVRPBZ
PAC019-073-085-121-192330-
/O.NEW.KPBZ.SV.W.0053.210619T2247Z-210619T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
647 PM EDT Sat Jun 19 2021
The National Weather Service in Pittsburgh has issued a
* Severe Thunderstorm Warning for...
Southern Mercer County in northwestern Pennsylvania...
Southwestern Venango County in northwestern Pennsylvania...
Northeastern Lawrence County in western Pennsylvania...
Northwestern Butler County in west central Pennsylvania...
* Until 730 PM EDT.
* At 647 PM EDT, a severe thunderstorm was located near Hermitage,
moving southeast at 30 mph.
HAZARD...Wind gusts to 60 mph and quarter-size hail.
SOURCE...Radar.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines, resulting in some power
outages.
* Locations impacted include...
Hermitage... Grove City...
Slippery Rock... New Wilmington...
Mercer... Harrisville...
West Middlesex... Plain Grove Township...
Clark... Wheatland...
West Liberty... Jackson Center...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 104 and 123.
Interstate 80 in Pennsylvania between mile markers 1 and 32.
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 4117 8051 4134 8041 4121 7990 4097 8005
TIME...MOT...LOC 2247Z 294DEG 27KT 4123 8037
HAIL...1.00IN
WIND...60MPH
$$
342 follow-up statements
485
WWUS51 KPBZ 192301
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
701 PM EDT Sat Jun 19 2021
PAC019-073-085-121-192330-
/O.CON.KPBZ.SV.W.0053.000000T0000Z-210619T2330Z/
Mercer PA-Venango PA-Lawrence PA-Butler PA-
701 PM EDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHERN MERCER...SOUTHWESTERN VENANGO...NORTHEASTERN LAWRENCE
AND NORTHWESTERN BUTLER COUNTIES...
At 700 PM EDT, a severe thunderstorm was located near New Wilmington,
or 8 miles west of Grove City, moving southeast at 30 mph.
HAZARD...Wind gusts to 60 mph and quarter-size hail.
SOURCE...Radar.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines, resulting in some power
outages.
Locations impacted include...
Hermitage... Grove City...
Slippery Rock... New Wilmington...
Mercer... Harrisville...
West Middlesex... Plain Grove Township...
Clark... West Liberty...
Barkeyville... Volant...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 104 and 121.
Interstate 80 in Pennsylvania between mile markers 3 and 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a building.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4117 8048 4129 8039 4121 7990 4097 8005
TIME...MOT...LOC 2300Z 294DEG 27KT 4119 8025
HAIL...1.00IN
WIND...60MPH
$$
34997
WWUS51 KPBZ 192315
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
715 PM EDT Sat Jun 19 2021
PAC019-073-085-121-192330-
/O.CON.KPBZ.SV.W.0053.000000T0000Z-210619T2330Z/
Mercer PA-Venango PA-Lawrence PA-Butler PA-
715 PM EDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHEASTERN MERCER...SOUTHWESTERN VENANGO...NORTHEASTERN
LAWRENCE AND NORTHWESTERN BUTLER COUNTIES...
At 714 PM EDT, a severe thunderstorm was located near Grove City,
moving southeast at 25 mph.
HAZARD...Wind gusts to 60 mph and quarter-size hail.
SOURCE...Radar.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines, resulting in some power
outages.
Locations impacted include...
Grove City... Slippery Rock...
New Wilmington... Mercer...
Harrisville... Plain Grove Township...
West Liberty... Barkeyville...
Volant...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 104 and 121.
Interstate 80 in Pennsylvania between mile markers 11 and 32.
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 4112 8038 4127 8025 4121 7990 4097 8005
TIME...MOT...LOC 2314Z 299DEG 23KT 4113 8016
HAIL...1.00IN
WIND...60MPH
$$
34The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 12:21 AM EDT | Special Weather Statement | PBZ | Armstrong | 24 min |
| Jun 19, 4:56 AM EDT | Special Weather Statement | PBZ | Allegheny | 34 min |
| Jun 19, 5:11 AM EDT | Special Weather Statement | PBZ | Westmoreland | 34 min |
| Jun 19, 6:34 PM EDT | Special Weather Statement | PBZ | Mercer | 26 min |
| Jun 19, 7:33 PM EDT | Special Weather Statement | PBZ | Butler | 27 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.