Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 32, NWS Pittsburgh, PA

June 14, 2021Armstrong County, Butler County, Clarion County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 14, 2021, 12:45 PM EDT for Armstrong County, Butler County, Clarion County, Pennsylvania. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 14, 2021, 12:45 PM EDT (16:45 UTC)
Expired: Jun 14, 2021, 1:15 PM EDT
In force: 30 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Armstrong County, PA, Butler County, PA, Clarion County, PA

The radar

The Pittsburgh radar (KPBZ), 69 km from the middle of the area, began a volume at 16:47 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.

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, 4.8 hours before the alert went out and 71 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.

246 
WUUS51 KPBZ 141645
SVRPBZ
PAC005-019-031-141715-
/O.NEW.KPBZ.SV.W.0032.210614T1645Z-210614T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pittsburgh PA
1245 PM EDT Mon Jun 14 2021

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  East central Butler County in west central Pennsylvania...
  Central Armstrong County in west central Pennsylvania...
  Southern Clarion County in west central Pennsylvania...

* Until 115 PM EDT.

* At 1245 PM EDT, a severe thunderstorm was located 9 miles northwest
  of Kittanning, moving southeast at 30 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...
  Kittanning...                     West Kittanning...
  East Brady...                     West Hills...
  Applewold...                      Templeton...

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 4092 7973 4101 7965 4090 7930 4075 7942
TIME...MOT...LOC 1645Z 299DEG 27KT 4094 7964 

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

CL

2 follow-up statements

890 
WWUS51 KPBZ 141700
SVSPBZ

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

PAC019-141710-
/O.CAN.KPBZ.SV.W.0032.000000T0000Z-210614T1715Z/
Butler PA-
100 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BUTLER 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 600 PM EDT for
west central Pennsylvania.

LAT...LON 4089 7967 4099 7959 4090 7930 4075 7942
TIME...MOT...LOC 1700Z 298DEG 27KT 4089 7951 

$$

PAC005-031-141715-
/O.CON.KPBZ.SV.W.0032.000000T0000Z-210614T1715Z/
Armstrong PA-Clarion PA-
100 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT
FOR CENTRAL ARMSTRONG AND SOUTHERN CLARION COUNTIES...

At 100 PM EDT, a severe thunderstorm was located near Kittanning,
moving southeast at 30 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...
Kittanning...                     West Kittanning...
West Hills...                     Applewold...
Templeton...                      

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 4089 7967 4099 7959 4090 7930 4075 7942
TIME...MOT...LOC 1700Z 298DEG 27KT 4089 7951 

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

CL

154 
WWUS51 KPBZ 141712
SVSPBZ

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

PAC005-031-141722-
/O.EXP.KPBZ.SV.W.0032.000000T0000Z-210614T1715Z/
Armstrong PA-Clarion PA-
112 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ARMSTRONG AND SOUTHERN
CLARION COUNTIES WILL EXPIRE AT 115 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 600 PM EDT for
west central Pennsylvania.

LAT...LON 4089 7967 4099 7959 4090 7930 4075 7942
TIME...MOT...LOC 1712Z 299DEG 27KT 4086 7944 

$$

CL

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, 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, 3:05 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	25 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.