Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 152, NWS Pittsburgh, PA

July 13, 2021Indiana County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 13, 2021, 4:50 PM EDT for Indiana County, Westmoreland County, Pennsylvania. It was in force for 40 min. 4 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: Jul 13, 2021, 4:50 PM EDT (20:50 UTC)
Expired: Jul 13, 2021, 5:30 PM EDT
In force: 40 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Indiana County, PA, Westmoreland County, PA

The radar

The State College radar (KCCX), 85 km from the middle of the area, began a volume at 20:50 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
Jul 13, 5:07 PM EDT	TSTM WND DMG	1 W Uniontown, PA	A NUMBER OF TREES DOWN IN THE NORTHEAST PORTION OF INDIANA COUNTY.
Jul 13, 5:27 PM EDT	TSTM WND DMG	2 Sw Climax, PA	EMERGENCY MANAGER REPORTED BRICKS THROWN ONTO ROOF, HOT TUB COVER THROWN THROUGH THE SLIDING GLASS DOOR, AND NUMEROUS TREES DOWN ALONG STIFFLER ROAD.
Jul 13, 5:34 PM EDT	TSTM WND DMG	1 N Dias, PA	TREES DOWN BETWEEN BRUSH VALLEY AND ARMAGH ON ROUTE 56.
Jul 13, 5:34 PM EDT	HAIL 1	1 N Dias, 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
Jul 13, 1:37 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.8 hours before the alert went out and 101 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: 107 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 980 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

537 
WUUS51 KPBZ 132050
SVRPBZ
PAC063-129-132130-
/O.NEW.KPBZ.SV.W.0152.210713T2050Z-210713T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
450 PM EDT Tue Jul 13 2021

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  Eastern Indiana County in west central Pennsylvania...
  East central Westmoreland County in southwestern Pennsylvania...

* Until 530 PM EDT.

* At 450 PM EDT, a severe thunderstorm was located near Belsano, or 8
  miles west of Nanty-Glo, moving north at 45 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...
  Clymer...                         New Florence...
  Seward...                         Cherry Tree...
  Glen Campbell...                  Armagh...
  Commodore...                      Dixonville...
  Brush Vly...                      Yellow Creek State Park...

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 4072 7881 4066 7883 4036 7900 4031 7904
      4033 7916 4058 7910 4084 7892 4083 7881
      4072 7880
TIME...MOT...LOC 2050Z 195DEG 38KT 4052 7898 

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

1 follow-up statement

930 
WWUS51 KPBZ 132117
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
517 PM EDT Tue Jul 13 2021

PAC063-129-132130-
/O.CON.KPBZ.SV.W.0152.000000T0000Z-210713T2130Z/
Indiana PA-Westmoreland PA-
517 PM EDT Tue Jul 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR EASTERN INDIANA AND EAST CENTRAL WESTMORELAND COUNTIES...

At 517 PM EDT, a severe thunderstorm was located 11 miles southeast
of Punxsutawney, moving north at 45 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...
Clymer...                         New Florence...
Seward...                         Cherry Tree...
Glen Campbell...                  Armagh...
Commodore...                      Dixonville...
Brush Vly...                      Yellow Creek State Park...

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 4072 7881 4066 7883 4036 7900 4031 7904
      4033 7916 4058 7910 4084 7892 4083 7881
      4072 7880
TIME...MOT...LOC 2117Z 195DEG 38KT 4080 7888 

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 8:00 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	30 min
Jul 13, 3:23 AM EDT	Special Weather Statement	PBZ	Washington	37 min
Jul 13, 3:37 AM EDT	Severe Thunderstorm Warning	PBZ	Washington	22 min
Jul 13, 3:53 AM EDT	Special Weather Statement	PBZ	Allegheny	37 min
Jul 13, 4:06 AM EDT	Special Weather Statement	PBZ	Westmoreland	24 min
Jul 13, 4:10 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	35 min
Jul 13, 4:17 AM EDT	Special Weather Statement	PBZ	Armstrong	28 min
Jul 13, 4:41 AM EDT	Special Weather Statement	PBZ	Indiana	34 min
Jul 13, 5:24 AM EDT	Special Weather Statement	PBZ	Indiana	36 min
Jul 13, 3:04 PM EDT	Special Weather Statement	PBZ	Lawrence	26 min
Jul 13, 3:14 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer	31 min
Jul 13, 3:25 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	35 min
Jul 13, 3:36 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Mercer, Venango	39 min
Jul 13, 3:39 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler	51 min
Jul 13, 4:05 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Mercer, Venango	40 min
Jul 13, 4:11 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	49 min
Jul 13, 4:14 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	31 min
Jul 13, 4:25 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	50 min
Jul 13, 4:41 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	34 min
Jul 13, 4:47 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Forest, Jefferson, Venango	43 min
Jul 13, 5:00 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	45 min
Jul 13, 5:08 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Jefferson	52 min
Jul 13, 5:12 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson, Venango	48 min
Jul 13, 5:25 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson, Westmoreland	50 min
Jul 13, 5:47 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Greene, Washington, Westmoreland	28 min
Jul 13, 6:08 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson, Westmoreland	37 min
Jul 13, 6:14 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	31 min
Jul 13, 6:43 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Westmoreland	32 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.