Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 4, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at May 26, 2021, 2:24 PM EDT for Mercer County, Pennsylvania. It was in force for 51 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
- May 26, 2021, 2:24 PM EDT (18:24 UTC)
- Expired
- May 26, 2021, 3:15 PM EDT
- In force
- 51 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Mercer County, PA
The radar
The Pittsburgh radar (KPBZ), 98 km from the middle of the area, began a volume at 18:26 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 |
|---|---|---|---|
| May 26, 2:36 PM EDT | TSTM WND DMG | Farrell, PA | TREE AND WIRES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 26, 12:59 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 6.4 hours before the alert went out and 113 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
- 71 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1654 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 146 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
360
WUUS51 KPBZ 261824
SVRPBZ
PAC085-261915-
/O.NEW.KPBZ.SV.W.0004.210526T1824Z-210526T1915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
224 PM EDT Wed May 26 2021
The National Weather Service in Pittsburgh has issued a
* Severe Thunderstorm Warning for...
Mercer County in northwestern Pennsylvania...
* Until 315 PM EDT.
* At 223 PM EDT, a severe thunderstorm was located over Vienna
Center, or near Sharon, moving east at 50 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...
Hermitage... Sharon...
Grove City... Sharpsville...
Greenville... Farrell...
Mercer... Stoneboro...
West Middlesex... Sandy Lake...
Clark... Wheatland...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 115 and 137.
Interstate 80 in Pennsylvania between mile markers 0 and 26.
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 4149 8040 4148 8037 4148 8013 4149 8012
4149 8001 4117 8002 4114 8052 4149 8052
TIME...MOT...LOC 1823Z 251DEG 42KT 4125 8062
HAIL...<.75IN
WIND...60MPH
$$4 follow-up statements
321
WWUS51 KPBZ 261838
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
238 PM EDT Wed May 26 2021
PAC085-261915-
/O.CON.KPBZ.SV.W.0004.000000T0000Z-210526T1915Z/
Mercer PA-
238 PM EDT Wed May 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR MERCER COUNTY...
At 237 PM EDT, a severe thunderstorm was located near Sharpsville,
moving east at 50 mph.
HAZARD...Wind gusts to 60 mph.
SOURCE...Radar.
IMPACT...Expect damage to trees and power lines, resulting in some
power outages.
Locations impacted include...
Hermitage... Sharon...
Grove City... Sharpsville...
Greenville... Farrell...
Mercer... Stoneboro...
West Middlesex... Sandy Lake...
Clark... Wheatland...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 115 and 137.
Interstate 80 in Pennsylvania between mile markers 1 and 26.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter indoors and stay away from windows.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4143 8043 4146 8036 4148 8013 4149 8012
4149 8001 4117 8002 4114 8051 4139 8050
TIME...MOT...LOC 1837Z 251DEG 42KT 4131 8040
HAIL...<.75IN
WIND...60MPH
$$403
WWUS51 KPBZ 261849
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
249 PM EDT Wed May 26 2021
PAC085-261915-
/O.CON.KPBZ.SV.W.0004.000000T0000Z-210526T1915Z/
Mercer PA-
249 PM EDT Wed May 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR CENTRAL MERCER COUNTY...
At 249 PM EDT, a severe thunderstorm was located 9 miles northeast of
Hermitage, moving east at 50 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...
Hermitage... Greenville...
Mercer... Stoneboro...
Sandy Lake... Clark...
Fredonia... Jackson Center...
New Lebanon... Maurice K Goddard State Park...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 116 and 135.
Interstate 80 in Pennsylvania between mile markers 5 and 26.
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 4141 8039 4142 8034 4144 8019 4148 8013
4149 8012 4149 8001 4117 8002 4117 8043
4138 8040
TIME...MOT...LOC 1849Z 258DEG 41KT 4129 8027
HAIL...<.75IN
WIND...60MPH
$$411
WWUS51 KPBZ 261902
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
302 PM EDT Wed May 26 2021
PAC085-261915-
/O.CON.KPBZ.SV.W.0004.000000T0000Z-210526T1915Z/
Mercer PA-
302 PM EDT Wed May 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR NORTHEASTERN MERCER COUNTY...
At 302 PM EDT, a severe thunderstorm was located 11 miles north of
Grove City, moving east at 50 mph.
HAZARD...Wind gusts to 60 mph.
SOURCE...Radar.
IMPACT...Expect damage to trees and power lines, resulting in some
power outages.
Locations impacted include...
Mercer... Stoneboro...
Sandy Lake... Fredonia...
Jackson Center... New Lebanon...
Maurice K Goddard State Park...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 117 and 135.
Interstate 80 in Pennsylvania between mile markers 16 and 26.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm has a history of producing damaging wind gusts. Move
indoors immediately and stay away from windows!
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4144 8019 4147 8012 4149 8001 4117 8002
4120 8029 4137 8026
TIME...MOT...LOC 1902Z 258DEG 41KT 4132 8008
HAIL...<.75IN
WIND...60MPH
$$688
WWUS51 KPBZ 261910
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
310 PM EDT Wed May 26 2021
PAC085-261919-
/O.EXP.KPBZ.SV.W.0004.000000T0000Z-210526T1915Z/
Mercer PA-
310 PM EDT Wed May 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MERCER COUNTY
WILL EXPIRE AT 315 PM EDT...
The storm which prompted the warning has weakened and is exiting the
warned area; therefore, the warning will be allowed to expire.
However gusty winds are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
northwestern Pennsylvania.
LAT...LON 4144 8019 4147 8012 4149 8001 4117 8002
4120 8029 4137 8026
TIME...MOT...LOC 1909Z 251DEG 42KT 4134 8001
$$The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 11:55 AM EDT | Special Weather Statement | PBZ | Westmoreland | 35 min |
| May 26, 12:14 PM EDT | Special Weather Statement | PBZ | Westmoreland | 31 min |
| May 26, 12:34 PM EDT | Special Weather Statement | PBZ | Westmoreland | 26 min |
| May 26, 1:13 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 17 min |
| May 26, 3:08 PM EDT | Special Weather Statement | PBZ | Venango | 37 min |
| May 26, 4:21 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 26 min |
| May 26, 4:23 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Washington | 22 min |
| May 26, 5:00 PM EDT | Special Weather Statement | PBZ | Greene | 30 min |
| May 26, 5:19 PM EDT | Special Weather Statement | PBZ | Allegheny | 26 min |
| May 26, 6:06 PM EDT | Special Weather Statement | PBZ | Indiana, Westmoreland | 24 min |
| May 26, 6:17 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 12 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.