Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS State College, PA

June 13, 2021Cambria County, Somerset County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 13, 2021, 9:08 AM EDT for Cambria County, Somerset County, Pennsylvania. It was in force for 67 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 13, 2021, 9:08 AM EDT (13:08 UTC)
Expired: Jun 13, 2021, 10:15 AM EDT
In force: 67 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cambria County, PA, Somerset County, PA

The radar

The Pittsburgh radar (KPBZ), 114 km from the middle of the area, began a volume at 13:10 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, 9:30 AM EDT	TSTM WND DMG	Hooversville, PA	TREES DOWN ON POWERLINES NEAR MYERS ST.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 1.1 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: 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.

719 
WUUS51 KCTP 131308
SVRCTP
PAC021-111-131415-
/O.NEW.KCTP.SV.W.0025.210613T1308Z-210613T1415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
908 AM EDT Sun Jun 13 2021

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Northeastern Somerset County in south central Pennsylvania...
  Southwestern Cambria County in central Pennsylvania...

* Until 1015 AM EDT.

* At 907 AM EDT, a severe thunderstorm was located near Jerome,
  moving southeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Johnstown, Westmont, Windber, Belmont, Geistown, Southmont,
  Friedens, Boswell, Dale, East Conemaugh, Salix-Beauty Line Park,
  Davidsville, Central City, Beaverdale-Lloydell, Paint, Jerome,
  Scalp Level, Sidman, St. Michael and Dunlo.

This includes The Pennsylvania Turnpike near mile marker 101.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4012 7921 4011 7919 4012 7917 4015 7916
      4018 7913 4020 7913 4039 7898 4030 7864
      4028 7865 4026 7864 4021 7868 4007 7874
      4006 7876 4002 7877 4010 7922
TIME...MOT...LOC 1307Z 302DEG 27KT 4027 7908 

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

Colbert

1 follow-up statement

573 
WWUS51 KCTP 131411
SVSCTP

Severe Weather Statement
National Weather Service State College PA
1011 AM EDT Sun Jun 13 2021

PAC021-111-131421-
/O.EXP.KCTP.SV.W.0025.000000T0000Z-210613T1415Z/
Somerset PA-Cambria PA-
1011 AM EDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SOMERSET AND
SOUTHWESTERN CAMBRIA COUNTIES WILL EXPIRE AT 1015 AM 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.

LAT...LON 4012 7921 4011 7919 4012 7917 4015 7916
      4018 7913 4020 7913 4039 7898 4030 7864
      4028 7865 4026 7864 4021 7868 4007 7874
      4006 7876 4002 7877 4010 7922
TIME...MOT...LOC 1411Z 302DEG 27KT 4002 7856 

$$

Colbert

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:56 AM EDT	Special Weather Statement	CTP	Somerset	49 min
Jun 13, 9:48 AM EDT	Special Weather Statement	CTP	Bedford	57 min
Jun 13, 10:04 AM EDT	Areal Flood Advisory	CTP	Bedford, Cambria, Somerset	116 min
Jun 13, 10:26 AM EDT	Special Weather Statement	CTP	Fulton	49 min
Jun 13, 3:37 PM EDT	Special Weather Statement	CTP	Lycoming	38 min
Jun 13, 3:45 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Tioga	45 min
Jun 13, 4:14 PM EDT	Special Weather Statement	CTP	Lycoming	46 min
Jun 13, 4:22 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Union	83 min
Jun 13, 4:55 PM EDT	Special Weather Statement	CTP	Cameron	20 min
Jun 13, 5:07 PM EDT	Special Weather Statement	CTP	Union	23 min
Jun 13, 5:11 PM EDT	Special Weather Statement	CTP	Elk	19 min
Jun 13, 5:16 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	55 min
Jun 13, 5:19 PM EDT	Special Weather Statement	CTP	Cameron	26 min
Jun 13, 5:57 PM EDT	Special Weather Statement	CTP	Union	18 min
Jun 13, 6:07 PM EDT	Special Weather Statement	CTP	Cameron	23 min
Jun 13, 6:30 PM EDT	Special Weather Statement	CTP	Clinton	15 min
Jun 13, 6:34 PM EDT	Special Weather Statement	CTP	Potter	26 min
Jun 13, 6:39 PM EDT	Special Weather Statement	CTP	Forest	21 min
Jun 13, 6:45 PM EDT	Special Weather Statement	CTP	Clinton	15 min
Jun 13, 6:51 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	54 min
Jun 13, 6:54 PM EDT	Special Weather Statement	CTP	Centre	36 min
Jun 13, 6:58 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	32 min
Jun 13, 7:22 PM EDT	Special Weather Statement	CTP	Tioga	23 min
Jun 13, 7:23 PM EDT	Special Weather Statement	CTP	Centre	37 min
Jun 13, 7:26 PM EDT	Severe Thunderstorm Warning	CTP	McKean	49 min
Jun 13, 7:34 PM EDT	Areal Flood Advisory	CTP	Potter	86 min
Jun 13, 7:46 PM EDT	Special Weather Statement	CTP	Centre	29 min
Jun 13, 7:53 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Huntingdon	43 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.