Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS Pittsburgh, PA

June 13, 2021Beaver County, Butler County, Lawrence County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 13, 2021, 4:23 PM EDT for Beaver County, Butler County, Lawrence County, Pennsylvania. It was in force for 37 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 13, 2021, 4:23 PM EDT (20:23 UTC)
Expired: Jun 13, 2021, 5:00 PM EDT
In force: 37 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Beaver County, PA, Butler County, PA, Lawrence County, PA

The radar

The Pittsburgh radar (KPBZ), 49 km from the middle of the area, began a volume at 20:26 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
Jun 13, 4:23 PM EDT	HAIL 1	2 Nnw Altman, PA	NICKEL TO QUARTER SIZE HAIL. TIME ESTIMATED BASED ON RADAR.
Jun 13, 4:27 PM EDT	TSTM WND DMG	1 E Altman, PA	POWER LINES DOWN WITH ESTIMATED 60 MPH WINDS.

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 13, 12:50 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.4 hours before the alert went out and 63 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: 1001 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 944 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

974 
WUUS51 KPBZ 132023
SVRPBZ
PAC007-019-073-132100-
/O.NEW.KPBZ.SV.W.0025.210613T2023Z-210613T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
423 PM EDT Sun Jun 13 2021

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  Northeastern Beaver County in western Pennsylvania...
  Central Lawrence County in western Pennsylvania...
  West central Butler County in west central Pennsylvania...

* Until 500 PM EDT.

* At 422 PM EDT, a severe thunderstorm was located over New Castle,
  moving southeast at 20 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...
  New Castle...                     Ellwood City...
  Shanor-Northvue...                Oakwood...
  New Castle Northwest...           Big Beaver...
  New Beaver...                     Ellport...
  Prospect...                       Plain Grove Township...
  Koppel...                         Wampum...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 14 and 17.
  Interstate 79 in Pennsylvania between mile markers 92 and 106.

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 4102 8038 4110 8024 4094 7992 4076 8030
TIME...MOT...LOC 2022Z 326DEG 18KT 4100 8029 

HAIL...1.00IN
WIND...60MPH
 
$$

DS

2 follow-up statements

668 
WWUS51 KPBZ 132043
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
443 PM EDT Sun Jun 13 2021

PAC007-019-073-132100-
/O.CON.KPBZ.SV.W.0025.000000T0000Z-210613T2100Z/
Beaver PA-Lawrence PA-Butler PA-
443 PM EDT Sun Jun 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN BEAVER...SOUTHEASTERN LAWRENCE AND WEST CENTRAL
BUTLER COUNTIES...

At 443 PM EDT, a severe thunderstorm was located near Ellwood City,
or 9 miles southeast of New Castle, moving southeast at 20 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...
Ellwood City...                   Ellport...
Prospect...                       Portersville...
Moraine State Park...             McConnells Mill...
Rose Point Park...                Cooper's Lake Campground...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 14 and 17.
  Interstate 79 in Pennsylvania between mile markers 93 and 102.

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 4093 8032 4100 8015 4091 7999 4076 8030
TIME...MOT...LOC 2043Z 326DEG 18KT 4091 8021 

HAIL...1.00IN
WIND...60MPH
 
$$

DS

865 
WWUS51 KPBZ 132050
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
450 PM EDT Sun Jun 13 2021

PAC007-019-073-132100-
/O.EXP.KPBZ.SV.W.0025.000000T0000Z-210613T2100Z/
Beaver PA-Lawrence PA-Butler PA-
450 PM EDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BEAVER...
SOUTHEASTERN LAWRENCE AND WEST CENTRAL BUTLER COUNTIES WILL EXPIRE AT
500 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However heavy rain is still possible with this
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
western and west central Pennsylvania.

LAT...LON 4093 8032 4100 8015 4091 7999 4076 8030
TIME...MOT...LOC 2050Z 326DEG 18KT 4089 8019 

$$

DS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:24 AM EDT	Special Weather Statement	PBZ	Westmoreland	36 min
Jun 13, 8:36 AM EDT	Areal Flood Advisory	PBZ	Armstrong, Westmoreland	71 min
Jun 13, 8:51 AM EDT	Areal Flood Advisory	PBZ	Armstrong, Indiana	103 min
Jun 13, 9:02 AM EDT	Special Weather Statement	PBZ	Westmoreland	13 min
Jun 13, 9:39 AM EDT	Special Weather Statement	PBZ	Fayette	36 min
Jun 13, 10:42 AM EDT	Special Weather Statement	PBZ	Fayette	33 min
Jun 13, 1:37 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	38 min
Jun 13, 1:57 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	20 min
Jun 13, 2:08 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	33 min
Jun 13, 3:55 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer	35 min
Jun 13, 5:29 PM EDT	Flash Flood Warning	PBZ	Allegheny, Westmoreland	3 hr
Jun 13, 5:33 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Westmoreland	27 min
Jun 13, 5:43 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	47 min
Jun 13, 5:53 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	17 min
Jun 13, 5:59 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	46 min
Jun 13, 6:12 PM EDT	Special Weather Statement	PBZ	Forest	33 min
Jun 13, 6:21 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	39 min
Jun 13, 6:54 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Washington, Westmoreland	2 hr
Jun 13, 6:58 PM EDT	Special Weather Statement	PBZ	Washington	47 min
Jun 13, 7:22 PM EDT	Flash Flood Warning	PBZ	Allegheny, Washington	100 min
Jun 13, 7:26 PM EDT	Special Weather Statement	PBZ	Fayette	34 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 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.