Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 35, NWS Pittsburgh, PA

June 14, 2021Allegheny County, Washington County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 14, 2021, 3:05 PM EDT for Allegheny County, Washington County, Westmoreland County, Pennsylvania. It was in force for 25 min. 11 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 14, 2021, 3:05 PM EDT (19:05 UTC)
Expired: Jun 14, 2021, 3:30 PM EDT
In force: 25 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Allegheny County, PA, Washington County, PA, Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 27 km from the middle of the area, began a volume at 19:05 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 14, 3:05 PM EDT	TSTM WND DMG	Pittsburgh, PA	TREE TOOK OFF ROOF OF BUILDING AT 1928 EDGEBROOK AVE.
Jun 14, 3:10 PM EDT	TSTM WND DMG	Dravosburg, PA	LARGE TREE DOWN INTO RESIDENCE. NO SIGNIFICANT STRUCTURAL DAMAGE.
Jun 14, 3:10 PM EDT	TSTM WND DMG	Glassport, PA	TREE DOWN THROUGH ROOF OF RESIDENCE.
Jun 14, 3:11 PM EDT	HAIL 0.75	Carnegie, PA
Jun 14, 3:12 PM EDT	TSTM WND DMG	Baldwin, PA	E. WILCOX ST. CLOSED WITH WIRES ON THE ROAD.
Jun 14, 3:15 PM EDT	TSTM WND DMG	Carnegie, PA	MULTIPLE TREES DOWN.
Jun 14, 3:15 PM EDT	TSTM WND DMG	Mckeesport, PA	TREE DOWN ON ROOF OF RESIDENCE.
Jun 14, 3:15 PM EDT	TSTM WND DMG	Munhall, PA	TREE DOWN ON VEHICLE BLOCKING ROADWAY. 228 E. MILLER AVE.
Jun 14, 3:20 PM EDT	TSTM WND DMG	Pittsburgh, PA	BASCOM AVE CLOSED DUE TO TREE AND WIRES ON ROADWAY.
Jun 14, 3:22 PM EDT	TSTM WND DMG	West Mifflin, PA	TREE DOWN ON MULTI-RESIDENTIAL BLDG.
Jun 14, 3:28 PM EDT	TSTM WND GST 60	1 W West Mifflin, PA

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 14, 11:46 AM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.1 hours before the alert went out and 10 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1684 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

883 
WUUS51 KPBZ 141905
SVRPBZ
PAC003-125-129-141930-
/O.NEW.KPBZ.SV.W.0035.210614T1905Z-210614T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
305 PM EDT Mon Jun 14 2021

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  East central Washington County in southwestern Pennsylvania...
  Southern Allegheny County in southwestern Pennsylvania...
  West central Westmoreland County in southwestern Pennsylvania...

* Until 330 PM EDT.

* At 305 PM EDT, a severe thunderstorm was located over Scott
  Township, or over Mount Lebanon, 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...                     Mount Lebanon...
  Bethel Park...                    McMurray...
  McKeesport...                     Jeannette...
  Gastonville...                    West Mifflin...
  North Side Pittsburgh...          Baldwin...
  Upper St. Clair...                Scott Township...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 64 and 68.
  Interstate 79 in Pennsylvania between mile markers 51 and 62.
  Interstate 376 in Pennsylvania between mile markers 62 and 75.

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 4038 8023 4048 8009 4034 7960 4016 7994
TIME...MOT...LOC 1905Z 291DEG 35KT 4039 8008 

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

2 follow-up statements

292 
WWUS51 KPBZ 141916
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
316 PM EDT Mon Jun 14 2021

PAC003-125-129-141930-
/O.CON.KPBZ.SV.W.0035.000000T0000Z-210614T1930Z/
Washington PA-Allegheny PA-Westmoreland PA-
316 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR EAST CENTRAL WASHINGTON...SOUTHEASTERN ALLEGHENY AND WEST CENTRAL
WESTMORELAND COUNTIES...

At 316 PM EDT, a severe thunderstorm was located over Pleasant Hills,
or near McKeesport, 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...                     Mount Lebanon...
Bethel Park...                    McMurray...
McKeesport...                     Jeannette...
Gastonville...                    West Mifflin...
Baldwin...                        Upper St. Clair...
Whitehall...                      South Park Township...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 64 and 68.
  Interstate 376 in Pennsylvania between mile markers 73 and 76.

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 4033 8013 4044 7995 4034 7960 4016 7994
TIME...MOT...LOC 1916Z 291DEG 35KT 4035 7994 

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

019 
WWUS51 KPBZ 141931
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
331 PM EDT Mon Jun 14 2021

PAC003-125-129-141940-
/O.EXP.KPBZ.SV.W.0035.000000T0000Z-210614T1930Z/
Washington PA-Allegheny PA-Westmoreland PA-
331 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WASHINGTON...
SOUTHEASTERN ALLEGHENY AND WEST CENTRAL WESTMORELAND COUNTIES HAS
EXPIRED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
southwestern Pennsylvania.

Remember, a Severe Thunderstorm Warning still remains in effect for 
far southeastern Allegheny County and west central Westmoreland 
County until 400 PM EDT.

LAT...LON 4033 8013 4044 7995 4034 7960 4016 7994
TIME...MOT...LOC 1930Z 291DEG 35KT 4031 7980 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 11:13 AM EDT	Special Weather Statement	PBZ	Venango	32 min
Jun 14, 11:17 AM EDT	Severe Thunderstorm Warning	PBZ	Butler, Mercer, Venango	28 min
Jun 14, 11:46 AM EDT	Special Weather Statement	PBZ	Butler	29 min
Jun 14, 11:48 AM EDT	Special Weather Statement	PBZ	Forest	27 min
Jun 14, 12:23 PM EDT	Special Weather Statement	PBZ	Butler	37 min
Jun 14, 12:45 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	30 min
Jun 14, 1:17 PM EDT	Special Weather Statement	PBZ	Allegheny	28 min
Jun 14, 2:24 PM EDT	Special Weather Statement	PBZ	Beaver	36 min
Jun 14, 2:28 PM EDT	Special Weather Statement	PBZ	Butler	32 min
Jun 14, 2:33 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	27 min
Jun 14, 2:44 PM EDT	Areal Flood Advisory	PBZ	Allegheny	111 min
Jun 14, 2:53 PM EDT	Special Weather Statement	PBZ	Butler	37 min
Jun 14, 2:54 PM EDT	Special Weather Statement	PBZ	Washington	36 min
Jun 14, 2:57 PM EDT	Special Weather Statement	PBZ	Allegheny	33 min
Jun 14, 2:59 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Beaver	47 min
Jun 14, 3:01 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	29 min
Jun 14, 3:03 PM EDT	Special Weather Statement	PBZ	Armstrong	27 min
Jun 14, 3:10 PM EDT	Special Weather Statement	PBZ	Beaver	35 min
Jun 14, 3:22 PM EDT	Special Weather Statement	PBZ	Armstrong, Indiana	23 min
Jun 14, 3:26 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	34 min
Jun 14, 3:29 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	31 min
Jun 14, 3:40 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Westmoreland	91 min
Jun 14, 3:42 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	33 min
Jun 14, 3:44 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Washington	106 min
Jun 14, 3:52 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington, Westmoreland	24 min
Jun 14, 3:55 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	37 min
Jun 14, 4:18 PM EDT	Special Weather Statement	PBZ	Fayette	42 min
Jun 14, 4:25 PM EDT	Special Weather Statement	PBZ	Greene	50 min
Jun 14, 4:47 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	43 min
Jun 14, 5:18 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	27 min
Jun 14, 5:19 PM EDT	Special Weather Statement	PBZ	Fayette	26 min
Jun 14, 5:41 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	31 min
Jun 14, 5:42 PM EDT	Special Weather Statement	PBZ	Fayette	33 min
Jun 14, 5:45 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	30 min
Jun 14, 6:02 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	28 min
Jun 14, 6:27 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	33 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.