Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 142, NWS State College, PA

July 13, 20214 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 13, 2021, 6:01 PM EDT for 4 counties in Pennsylvania. It was in force for 59 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: Jul 13, 2021, 6:01 PM EDT (22:01 UTC)
Expired: Jul 13, 2021, 7:00 PM EDT
In force: 59 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bedford County, PA, Blair County, PA, Cambria County, PA, Clearfield County, PA

The radar

The State College radar (KCCX), 67 km from the middle of the area, began a volume at 22:00 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, 6:38 PM EDT	TSTM WND DMG	4 Wsw Bellwood, PA	MULTIPLE TREES SNAPPED AND UPROOTED AT THE RIGGLES GAP SPORTSMEN CLUB.

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, 10.0 hours before the alert went out and 132 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.

468 
WUUS51 KCTP 132201
SVRCTP
PAC009-013-021-033-132300-
/O.NEW.KCTP.SV.W.0142.210713T2201Z-210713T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
601 PM EDT Tue Jul 13 2021

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  North central Bedford County in south central Pennsylvania...
  Southwestern Clearfield County in central Pennsylvania...
  Central Blair County in central Pennsylvania...
  Central Cambria County in central Pennsylvania...

* Until 700 PM EDT.

* At 600 PM EDT, a severe thunderstorm was located over
  Beaverdale-Lloydell, moving north at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Altoona, Hollidaysburg, Tyrone, Ebensburg, Portage, Bald Eagle,
  Lakemont, Bellwood, Patton, Cresson, Gallitzin, Loretto, Hastings,
  Duncansville, Salix-Beauty Line Park, Tipton, Beaverdale-Lloydell,
  Lilly, Carrolltown and Sankertown.

This includes Interstate 99 from mile markers 23 to 51.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4023 7866 4024 7866 4024 7874 4025 7879
      4084 7866 4078 7835 4076 7837 4073 7836
      4074 7817 4021 7854
TIME...MOT...LOC 2200Z 196DEG 32KT 4032 7864 

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

Travis

2 follow-up statements

272 
WWUS51 KCTP 132212
SVSCTP

Severe Weather Statement
National Weather Service State College PA
612 PM EDT Tue Jul 13 2021

PAC009-132221-
/O.CAN.KCTP.SV.W.0142.000000T0000Z-210713T2300Z/
Bedford PA-
612 PM EDT Tue Jul 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BEDFORD 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 1100 PM EDT for
south central and central Pennsylvania.

LAT...LON 4032 7860 4033 7862 4032 7862 4034 7868
      4083 7859 4078 7836 4078 7835 4075 7837
      4073 7836 4073 7827 4030 7855
TIME...MOT...LOC 2211Z 196DEG 32KT 4042 7860 

$$

PAC013-021-033-132300-
/O.CON.KCTP.SV.W.0142.000000T0000Z-210713T2300Z/
Clearfield PA-Blair PA-Cambria PA-
612 PM EDT Tue Jul 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTH CENTRAL CLEARFIELD...WESTERN BLAIR AND EASTERN CAMBRIA
COUNTIES...

At 611 PM EDT, a severe thunderstorm was located over Lilly, moving
north at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Altoona, Portage, Cresson, Gallitzin, Loretto, Lilly, Sankertown,
Blandburg, Horseshoe Curve, Prince Gallitzin State Park, Spring Hill,
Irvona, Coalport, Tunnelhill, Ashville, Chest Springs, Cassandra,
Glen Hope, Allegheny Portage Railroad National Historic Site and Penn
State Altoona.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4032 7860 4033 7862 4032 7862 4034 7868
      4083 7859 4078 7836 4078 7835 4075 7837
      4073 7836 4073 7827 4030 7855
TIME...MOT...LOC 2211Z 196DEG 32KT 4042 7860 

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

Banghoff

713 
WWUS51 KCTP 132233
SVSCTP

Severe Weather Statement
National Weather Service State College PA
633 PM EDT Tue Jul 13 2021

PAC013-021-033-132300-
/O.CON.KCTP.SV.W.0142.000000T0000Z-210713T2300Z/
Clearfield PA-Blair PA-Cambria PA-
633 PM EDT Tue Jul 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTH CENTRAL CLEARFIELD...NORTH CENTRAL BLAIR AND NORTHEASTERN
CAMBRIA COUNTIES...

At 633 PM EDT, a severe thunderstorm was located east of Prince 
Gallitzin State Park, moving northeast at 35 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Altoona, Blandburg, Prince Gallitzin State Park, Irvona, Coalport,
Ashville, Glen Hope and Penn State Altoona.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4051 7841 4057 7858 4083 7857 4078 7836
      4078 7835 4075 7837 4073 7836 4073 7827
TIME...MOT...LOC 2233Z 206DEG 31KT 4061 7848 

HAIL...<.75IN
WIND...70MPH
 
$$

Travis

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 8:26 PM EDT	Areal Flood Advisory	CTP	Tioga	2 hr
Jul 12, 8:50 PM EDT	Areal Flood Advisory	CTP	Lycoming, Sullivan	2 hr
Jul 12, 9:47 PM EDT	Areal Flood Advisory	CTP	Sullivan	118 min
Jul 12, 11:21 PM EDT	Special Weather Statement	CTP	York	24 min
Jul 12, 11:52 PM EDT	Special Weather Statement	CTP	Adams, Lancaster, Lebanon, York	23 min
Jul 13, 12:53 AM EDT	Special Weather Statement	CTP	Lebanon	22 min
Jul 13, 1:31 AM EDT	Special Weather Statement	CTP	Schuylkill	29 min
Jul 13, 2:02 AM EDT	Special Weather Statement	CTP	Schuylkill	28 min
Jul 13, 12:39 PM EDT	Flash Flood Watch	CTP	Columbia, Lycoming, Montour, Northumberland, Snyder, Sullivan and 2 more	11 hr
Jul 13, 4:18 PM EDT	Special Weather Statement	CTP	Somerset	42 min
Jul 13, 4:31 PM EDT	Areal Flood Advisory	CTP	Tioga	119 min
Jul 13, 4:34 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	41 min
Jul 13, 4:35 PM EDT	Severe Thunderstorm Warning	CTP	Warren	55 min
Jul 13, 4:38 PM EDT	Areal Flood Advisory	CTP	Somerset	3 hr
Jul 13, 5:14 PM EDT	Special Weather Statement	CTP	Somerset	46 min
Jul 13, 5:23 PM EDT	Severe Thunderstorm Warning	CTP	Elk, McKean, Warren	52 min
Jul 13, 5:35 PM EDT	Special Weather Statement	CTP	Clearfield	40 min
Jul 13, 5:38 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	41 min
Jul 13, 5:49 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Potter	56 min
Jul 13, 5:53 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	67 min
Jul 13, 5:56 PM EDT	Special Weather Statement	CTP	Clearfield	34 min
Jul 13, 6:07 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield, Elk	38 min
Jul 13, 6:19 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	41 min
Jul 13, 6:27 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	37 min
Jul 13, 6:33 PM EDT	Special Weather Statement	CTP	Clearfield	27 min
Jul 13, 6:35 PM EDT	Special Weather Statement	CTP	Huntingdon	40 min
Jul 13, 6:43 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Potter, Tioga	47 min
Jul 13, 6:46 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Clearfield	44 min
Jul 13, 6:46 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Huntingdon	44 min
Jul 13, 6:54 PM EDT	Areal Flood Advisory	CTP	Cameron, Clearfield, Clinton	3 hr
Jul 13, 6:59 PM EDT	Severe Thunderstorm Warning	CTP	Potter	61 min
Jul 13, 7:01 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	44 min
Jul 13, 7:07 PM EDT	Special Weather Statement	CTP	Clinton	23 min
Jul 13, 7:08 PM EDT	Special Weather Statement	CTP	Somerset	37 min
Jul 13, 7:16 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Mifflin	44 min
Jul 13, 7:26 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Tioga	64 min
Jul 13, 7:29 PM EDT	Areal Flood Advisory	CTP	Centre, Clinton	3 hr
Jul 13, 7:44 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Tioga	61 min
Jul 13, 7:55 PM EDT	Flash Flood Warning	CTP	Lycoming, Tioga	2 hr
Jul 13, 7:58 PM EDT	Areal Flood Advisory	CTP	Centre, Clinton	2 hr
Jul 13, 7:59 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Mifflin, Snyder, Union	46 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.