Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 98, NWS Pittsburgh, PA

June 30, 20214 counties in Pennsylvania; Hancock County, West Virginia; Columbiana County, Jefferson County, Ohio

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 30, 2021, 5:58 PM EDT for 4 counties in Pennsylvania; Hancock County, West Virginia; Columbiana County, Jefferson County, Ohio. It was in force for 47 min. 2 reports 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 30, 2021, 5:58 PM EDT (21:58 UTC)
Expired: Jun 30, 2021, 6:45 PM EDT
In force: 47 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Columbiana County, OH, Jefferson County, OH, Allegheny County, PA, Beaver County, PA, Butler County, PA, Washington County, PA, Hancock County, WV

The radar

The Pittsburgh radar (KPBZ), 17 km from the middle of the area, began a volume at 22:00 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 30, 6:05 PM EDT	TSTM WND DMG	East Liverpool, OH	REPORT OF GUTTER DAMAGE, LARGE TREE BRANCHES DOWN, AND A TREE SPLIT. TIME ESTIMATED BASED ON RADAR.
Jun 30, 6:18 PM EDT	TSTM WND DMG	Industry, PA	REPORT OF A SNAPPED TREE AND LIMBS DOWN IN INDUSTRY.

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
Jun 30, 11:47 AM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.0 hours before the alert went out and 32 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 807 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1240 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted.

579 
WUUS51 KPBZ 302158
SVRPBZ
OHC029-081-PAC003-007-019-125-WVC029-302245-
/O.NEW.KPBZ.SV.W.0098.210630T2158Z-210630T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
558 PM EDT Wed Jun 30 2021

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  Northeastern Jefferson County in east central Ohio...
  Southeastern Columbiana County in east central Ohio...
  Beaver County in western Pennsylvania...
  Northern Washington County in southwestern Pennsylvania...
  Southwestern Butler County in west central Pennsylvania...
  Northwestern Allegheny County in southwestern Pennsylvania...
  Hancock County in northern West Virginia...

* Until 645 PM EDT.

* At 557 PM EDT, a severe thunderstorm was located near Wellsville,
  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...                     Ross Township...
  McCandless Township...            Cranberry...
  Moon Township...                  Franklin Park...
  East Liverpool...                 Aliquippa...
  Beaver Falls...                   Monaca...
  Wellsville...                     Shaler Township...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 23 and 37.
  Interstate 79 in Pennsylvania between mile markers 54 and 55, and 
  between mile markers 57 and 82.
  Interstate 376 in Pennsylvania between mile markers 33 and 65.

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 4057 8079 4077 8073 4073 8001 4054 7996
      4036 8012
TIME...MOT...LOC 2157Z 286DEG 34KT 4065 8066 

HAIL...<.75IN
WIND...60MPH
 
$$

5 follow-up statements

049 
WWUS51 KPBZ 302209
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
609 PM EDT Wed Jun 30 2021

OHC029-081-PAC003-007-019-125-WVC029-302245-
/O.CON.KPBZ.SV.W.0098.000000T0000Z-210630T2245Z/
Jefferson OH-Columbiana OH-Beaver PA-Washington PA-Butler PA-
Allegheny PA-Hancock WV-
609 PM EDT Wed Jun 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR NORTHEASTERN JEFFERSON...SOUTHEASTERN COLUMBIANA...BEAVER...
NORTHERN WASHINGTON...SOUTHWESTERN BUTLER...NORTHWESTERN ALLEGHENY
AND HANCOCK COUNTIES...

At 608 PM EDT, a severe thunderstorm was located over Chester, or
over East Liverpool, 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...                     Ross Township...
McCandless Township...            Cranberry...
Moon Township...                  Franklin Park...
East Liverpool...                 Aliquippa...
Beaver Falls...                   Monaca...
Wellsville...                     Shaler Township...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 23 and 37.
  Interstate 79 in Pennsylvania between mile markers 54 and 55, and 
  between mile markers 57 and 82.
  Interstate 376 in Pennsylvania between mile markers 33 and 65.

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 4054 8070 4077 8067 4073 8001 4054 7996
      4036 8012
TIME...MOT...LOC 2208Z 286DEG 34KT 4062 8052 

HAIL...<.75IN
WIND...60MPH
 
$$

119 
WWUS51 KPBZ 302215
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
615 PM EDT Wed Jun 30 2021

OHC029-081-PAC003-007-019-125-WVC029-302245-
/O.CON.KPBZ.SV.W.0098.000000T0000Z-210630T2245Z/
Jefferson OH-Columbiana OH-Beaver PA-Washington PA-Butler PA-
Allegheny PA-Hancock WV-
615 PM EDT Wed Jun 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR NORTHEASTERN JEFFERSON...SOUTHEASTERN COLUMBIANA...BEAVER...
NORTHERN WASHINGTON...SOUTHWESTERN BUTLER...NORTHWESTERN ALLEGHENY
AND HANCOCK COUNTIES...

At 615 PM EDT, a severe thunderstorm was located over Shippingport,
or 7 miles east of East Liverpool, 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...                     Ross Township...
McCandless Township...            Cranberry...
Moon Township...                  Franklin Park...
East Liverpool...                 Aliquippa...
Beaver Falls...                   Monaca...
Shaler Township...                Hampton Township...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 23 and 37.
  Interstate 79 in Pennsylvania between mile markers 54 and 55, and 
  between mile markers 57 and 82.
  Interstate 376 in Pennsylvania between mile markers 33 and 65.

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 4052 8063 4076 8055 4073 8001 4054 7996
      4036 8012
TIME...MOT...LOC 2215Z 286DEG 34KT 4060 8043 

HAIL...<.75IN
WIND...60MPH
 
$$

618 
WWUS51 KPBZ 302224
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
624 PM EDT Wed Jun 30 2021

OHC029-081-302233-
/O.CAN.KPBZ.SV.W.0098.000000T0000Z-210630T2245Z/
Jefferson OH-Columbiana OH-
624 PM EDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JEFFERSON AND
SOUTHEASTERN COLUMBIANA COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
western, southwestern and west central Pennsylvania...and northern
West Virginia. A Severe Thunderstorm Watch also remains in effect
until 800 PM EDT for western, southwestern and west central
Pennsylvania...and northern West Virginia.

LAT...LON 4051 8058 4062 8046 4076 8047 4073 8001
      4054 7996 4036 8012
TIME...MOT...LOC 2223Z 286DEG 34KT 4058 8033 

$$

PAC003-007-019-125-WVC029-302245-
/O.CON.KPBZ.SV.W.0098.000000T0000Z-210630T2245Z/
Beaver PA-Washington PA-Butler PA-Allegheny PA-Hancock WV-
624 PM EDT Wed Jun 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR BEAVER...NORTHERN WASHINGTON...SOUTHWESTERN BUTLER...NORTHWESTERN
ALLEGHENY AND HANCOCK COUNTIES...

At 623 PM EDT, a severe thunderstorm was located near Aliquippa,
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...                     Ross Township...
McCandless Township...            Cranberry...
Moon Township...                  Franklin Park...
Aliquippa...                      Beaver Falls...
Monaca...                         Shaler Township...
Hampton Township...               Scott Township...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 22 and 37.
  Interstate 79 in Pennsylvania between mile markers 54 and 55, and 
  between mile markers 57 and 82.
  Interstate 376 in Pennsylvania between mile markers 32 and 65.

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 4051 8058 4062 8046 4076 8047 4073 8001
      4054 7996 4036 8012
TIME...MOT...LOC 2223Z 286DEG 34KT 4058 8033 

HAIL...<.75IN
WIND...60MPH
 
$$

319 
WWUS51 KPBZ 302232
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
632 PM EDT Wed Jun 30 2021

WVC029-302241-
/O.CAN.KPBZ.SV.W.0098.000000T0000Z-210630T2245Z/
Hancock WV-
632 PM EDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR HANCOCK COUNTY IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
western, southwestern and west central Pennsylvania. A Severe
Thunderstorm Watch also remains in effect until 800 PM EDT for
western, southwestern and west central Pennsylvania.

LAT...LON 4049 8051 4062 8038 4075 8037 4073 8001
      4054 7996 4036 8012
TIME...MOT...LOC 2231Z 286DEG 34KT 4056 8023 

$$

PAC003-007-019-125-302245-
/O.CON.KPBZ.SV.W.0098.000000T0000Z-210630T2245Z/
Beaver PA-Washington PA-Butler PA-Allegheny PA-
632 PM EDT Wed Jun 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHERN BEAVER...NORTHERN WASHINGTON...SOUTHWESTERN BUTLER AND
NORTHWESTERN ALLEGHENY COUNTIES...

At 631 PM EDT, a severe thunderstorm was located over Leetsdale, or
over 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...                     Ross Township...
McCandless Township...            Cranberry...
Moon Township...                  Franklin Park...
Aliquippa...                      Beaver Falls...
Monaca...                         Shaler Township...
Hampton Township...               Scott Township...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 23 and 37.
  Interstate 79 in Pennsylvania between mile markers 54 and 55, and 
  between mile markers 57 and 82.
  Interstate 376 in Pennsylvania near mile marker 34, and between 
  mile markers 36 and 65.

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 4049 8051 4062 8038 4075 8037 4073 8001
      4054 7996 4036 8012
TIME...MOT...LOC 2231Z 286DEG 34KT 4056 8023 

HAIL...<.75IN
WIND...60MPH
 
$$

937 
WWUS51 KPBZ 302241
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
641 PM EDT Wed Jun 30 2021

PAC003-007-019-125-302251-
/O.EXP.KPBZ.SV.W.0098.000000T0000Z-210630T2245Z/
Beaver PA-Washington PA-Butler PA-Allegheny PA-
641 PM EDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BEAVER...NORTHERN
WASHINGTON...SOUTHWESTERN BUTLER AND NORTHWESTERN ALLEGHENY COUNTIES
WILL EXPIRE AT 645 PM EDT...
                
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 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
western, southwestern and west central Pennsylvania. A Severe
Thunderstorm Watch also remains in effect until 800 PM EDT for
western, southwestern and west central Pennsylvania.

LAT...LON 4049 8051 4062 8038 4075 8037 4073 8001
      4054 7996 4036 8012
TIME...MOT...LOC 2241Z 286DEG 34KT 4054 8013 

$$

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 8:02 PM EDT	Areal Flood Advisory	PBZ	Mercer, Venango	118 min
Jun 30, 12:40 PM EDT	Special Weather Statement	PBZ	Washington	50 min
Jun 30, 12:56 PM EDT	Special Weather Statement	PBZ	Allegheny	34 min
Jun 30, 1:04 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	26 min
Jun 30, 1:06 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	24 min
Jun 30, 1:19 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Washington, Westmoreland	3 hr
Jun 30, 1:23 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	52 min
Jun 30, 1:29 PM EDT	Special Weather Statement	PBZ	Washington	31 min
Jun 30, 1:52 PM EDT	Special Weather Statement	PBZ	Indiana	23 min
Jun 30, 2:03 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	42 min
Jun 30, 2:12 PM EDT	Flash Flood Warning	PBZ	Allegheny, Beaver, Washington, Westmoreland	3 hr
Jun 30, 2:14 PM EDT	Flash Flood Warning	PBZ	Allegheny, Washington	2 hr
Jun 30, 2:26 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	49 min
Jun 30, 2:37 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	38 min
Jun 30, 2:41 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	34 min
Jun 30, 2:45 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	45 min
Jun 30, 3:03 PM EDT	Special Weather Statement	PBZ	Armstrong	27 min
Jun 30, 3:13 PM EDT	Special Weather Statement	PBZ	Greene	32 min
Jun 30, 3:29 PM EDT	Special Weather Statement	PBZ	Fayette	31 min
Jun 30, 3:32 PM EDT	Areal Flood Advisory	PBZ	Armstrong, Indiana	3 hr
Jun 30, 3:35 PM EDT	Special Weather Statement	PBZ	Forest	25 min
Jun 30, 3:52 PM EDT	Special Weather Statement	PBZ	Fayette	23 min
Jun 30, 3:55 PM EDT	Special Weather Statement	PBZ	Jefferson	35 min
Jun 30, 4:29 PM EDT	Special Weather Statement	PBZ	Butler	31 min
Jun 30, 5:05 PM EDT	Special Weather Statement	PBZ	Mercer	25 min
Jun 30, 5:11 PM EDT	Special Weather Statement	PBZ	Lawrence	34 min
Jun 30, 6:44 PM EDT	Special Weather Statement	PBZ	Allegheny	46 min
Jun 30, 1:56 PM EDT	Severe Thunderstorm Warning	PBZ	Brooke, Marshall, Ohio	34 min
Jun 30, 3:04 PM EDT	Special Weather Statement	PBZ	Hancock	26 min
Jun 30, 4:14 PM EDT	Special Weather Statement	PBZ	Monongalia, Preston	31 min
Jun 30, 5:26 PM EDT	Special Weather Statement	PBZ	Hancock	34 min
Jun 30, 11:57 AM EDT	Special Weather Statement	PBZ	Muskingum	33 min
Jun 30, 12:20 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey, Muskingum	25 min
Jun 30, 12:37 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Muskingum, Noble, Tuscarawas	23 min
Jun 30, 12:54 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Muskingum, Tuscarawas	51 min
Jun 30, 1:21 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Guernsey, Harrison, Monroe, Noble, Tuscarawas	24 min
Jun 30, 1:38 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Guernsey, Harrison, Monroe, Noble, Tuscarawas	52 min
Jun 30, 4:52 PM EDT	Special Weather Statement	PBZ	Carroll, Columbiana	23 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2021 Severe Thunderstorm Warnings in Ohio, 2021 Severe Thunderstorm Warnings in West Virginia, 2021 Every 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.