Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 41, NWS Pittsburgh, PA

June 14, 2021Greene County, Washington County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 14, 2021, 4:47 PM EDT for Greene County, Washington County, Pennsylvania. It was in force for 43 min. 1 report 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, 4:47 PM EDT (20:47 UTC)
Expired: Jun 14, 2021, 5:30 PM EDT
In force: 43 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Greene County, PA, Washington County, PA

The radar

The Pittsburgh radar (KPBZ), 66 km from the middle of the area, began a volume at 20:49 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, 5:20 PM EDT	HAIL 1	Carmichaels, 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, 8.8 hours before the alert went out and 53 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.

811 
WUUS51 KPBZ 142047
SVRPBZ
PAC059-125-142130-
/O.NEW.KPBZ.SV.W.0041.210614T2047Z-210614T2130Z/

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

The National Weather Service in Pittsburgh has issued a

* Severe Thunderstorm Warning for...
  South central Washington County in southwestern Pennsylvania...
  Central Greene County in southwestern Pennsylvania...

* Until 530 PM EDT.

* At 447 PM EDT, a severe thunderstorm was located 8 miles northwest
  of Waynesburg, moving southeast at 25 mph.

  HAZARD...Quarter-size hail.

  SOURCE...Radar.

  IMPACT...Minor damage to vehicles is possible.

* Locations impacted include...
  Waynesburg...                     Jefferson Boro...
  Fairdale...                       Rogersville...
  Marianna...                       Carmichaels...
  Rices Landing...                  Clarksville...
  Amity...                          Nineveh...

This includes Interstate 79 in Pennsylvania between mile markers 7
and 26.
 
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 4000 8037 4008 8021 3992 7995 3980 7999
      3981 8023
TIME...MOT...LOC 2047Z 305DEG 22KT 4001 8026 

HAIL...1.00IN
WIND...<50MPH
 
$$

2 follow-up statements

746 
WWUS51 KPBZ 142104
SVSPBZ

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

PAC125-142114-
/O.CAN.KPBZ.SV.W.0041.000000T0000Z-210614T2130Z/
Washington PA-
504 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL WASHINGTON
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
southwestern Pennsylvania.

LAT...LON 3996 8023 3999 8008 3996 8002 3992 7995
      3980 7999 3981 8023
TIME...MOT...LOC 2104Z 305DEG 22KT 3995 8015 

$$

PAC059-142130-
/O.CON.KPBZ.SV.W.0041.000000T0000Z-210614T2130Z/
Greene PA-
504 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHEASTERN GREENE COUNTY...

At 504 PM EDT, a severe thunderstorm was located near Waynesburg,
moving southeast at 25 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...
Waynesburg...                     Jefferson Boro...
Fairdale...                       Carmichaels...
Rices Landing...                  Clarksville...

This includes Interstate 79 in Pennsylvania between mile markers 7
and 19.
 
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 3996 8023 3999 8008 3996 8002 3992 7995
      3980 7999 3981 8023
TIME...MOT...LOC 2104Z 305DEG 22KT 3995 8015 

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

343 
WWUS51 KPBZ 142121
SVSPBZ

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

PAC059-142130-
/O.EXP.KPBZ.SV.W.0041.000000T0000Z-210614T2130Z/
Greene PA-
521 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GREENE COUNTY
WILL EXPIRE AT 530 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However, heavy 
rain is still possible with additional thunderstorms.

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

LAT...LON 3996 8023 3999 8008 3996 8002 3992 7995
      3980 7999 3981 8023
TIME...MOT...LOC 2120Z 305DEG 22KT 3990 8005 

$$

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, 3:05 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, 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.