Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 32, NWS State College, PA

June 13, 2021Blair County, Centre County, Huntingdon County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 13, 2021, 7:53 PM EDT for Blair County, Centre County, Huntingdon County, Pennsylvania. It was in force for 43 min. 2 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
Jun 13, 2021, 7:53 PM EDT (23:53 UTC)
Expired
Jun 13, 2021, 8:36 PM EDT
In force
43 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Blair County, PA, Centre County, PA, Huntingdon County, PA

The radar

The State College radar (KCCX), 22 km from the middle of the area, began a volume at 23:54 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

TimeReportWhereRemark
Jun 13, 8:02 PM EDTTSTM WND DMG4 W Port Matilda, PATREES DOWN ON WIRES ON SOUTH MOUNTAIN ROAD.
Jun 13, 8:12 PM EDTTSTM WND DMG2 Nnw Warriors Mark, PANUMEROUS TREES DOWN ON HALFMOON VALLEY RD NEAR CENTRE LINE RD. TIME ESTIMATED BY RADAR.

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.

IssuedProductOfficeLasted
Jun 13, 3:26 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 11.9 hours before the alert went out and 173 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2021-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1001 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2021-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

496 
WUUS51 KCTP 132353
SVRCTP
PAC013-027-061-140100-
/O.NEW.KCTP.SV.W.0032.210613T2353Z-210614T0100Z/

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

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Northwestern Huntingdon County in central Pennsylvania...
  Southwestern Centre County in central Pennsylvania...
  Northeastern Blair County in central Pennsylvania...

* Until 900 PM EDT.

* At 753 PM EDT, a severe thunderstorm was located near Port Matilda,
  moving southeast at 15 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Tyrone, Stormstown, Bald Eagle, Warriors Mark, Port Matilda, Sandy 
  Ridge, Franklinville and Rock Springs.

This includes Interstate 99 from mile markers 48 to 63.

This includes the following highways...
 Route 220 from near Tyrone on I-99 to Port Matilda.
 Route 322 from north of Port Matilda to Port Matilda.
 State Road 350 from Sandy Ridge to Bald Eagle.
 State Road 453 near Tyrone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4082 7823 4086 7807 4071 7791 4069 7794
      4062 7803 4066 7824
TIME...MOT...LOC 2353Z 334DEG 14KT 4078 7813 

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

Dangelo
2 follow-up statements
662 
WWUS51 KCTP 140007
SVSCTP

Severe Weather Statement
National Weather Service State College PA
807 PM EDT Sun Jun 13 2021

PAC013-027-061-140100-
/O.CON.KCTP.SV.W.0032.000000T0000Z-210614T0100Z/
Huntingdon PA-Centre PA-Blair PA-
807 PM EDT Sun Jun 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHWESTERN HUNTINGDON...SOUTHWESTERN CENTRE AND NORTHEASTERN
BLAIR COUNTIES...

At 807 PM EDT, a severe thunderstorm was located near Warriors Mark,
moving southeast at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Tyrone, Stormstown, Bald Eagle, Warriors Mark, Ramblewood, Port
Matilda, Franklinville and Rock Springs.

This includes Interstate 99 from mile markers 48 to 63.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter, such as an interior room,
a bathroom or closet or basement.

&&

LAT...LON 4076 7823 4086 7807 4071 7791 4069 7794
      4062 7803 4066 7824
TIME...MOT...LOC 0007Z 329DEG 11KT 4075 7810 

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

Dangelo
477 
WWUS51 KCTP 140036
SVSCTP

Severe Weather Statement
National Weather Service State College PA
836 PM EDT Sun Jun 13 2021

PAC013-027-061-140045-
/O.CAN.KCTP.SV.W.0032.000000T0000Z-210614T0100Z/
Huntingdon PA-Centre PA-Blair PA-
836 PM EDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HUNTINGDON...
SOUTHWESTERN CENTRE AND NORTHEASTERN BLAIR COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has 
been cancelled.  However gusty winds of 50 to 55 MPH are still 
possible with this thunderstorm as it moves south through Huntingdon 
County.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central Pennsylvania.

LAT...LON 4076 7823 4086 7807 4071 7791 4069 7794
      4062 7803 4066 7824
TIME...MOT...LOC 0034Z 334DEG 14KT 4065 7804 

$$

Dangelo

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 8:56 AM EDTSpecial Weather StatementCTPSomerset49 min
Jun 13, 9:08 AM EDTSevere Thunderstorm WarningCTPCambria, Somerset67 min
Jun 13, 9:48 AM EDTSpecial Weather StatementCTPBedford57 min
Jun 13, 10:04 AM EDTAreal Flood AdvisoryCTPBedford, Cambria, Somerset116 min
Jun 13, 10:26 AM EDTSpecial Weather StatementCTPFulton49 min
Jun 13, 3:37 PM EDTSpecial Weather StatementCTPLycoming38 min
Jun 13, 3:45 PM EDTSevere Thunderstorm WarningCTPLycoming, Tioga45 min
Jun 13, 4:14 PM EDTSpecial Weather StatementCTPLycoming46 min
Jun 13, 4:22 PM EDTSevere Thunderstorm WarningCTPLycoming, Union83 min
Jun 13, 4:55 PM EDTSpecial Weather StatementCTPCameron20 min
Jun 13, 5:07 PM EDTSpecial Weather StatementCTPUnion23 min
Jun 13, 5:11 PM EDTSpecial Weather StatementCTPElk19 min
Jun 13, 5:16 PM EDTSevere Thunderstorm WarningCTPClinton55 min
Jun 13, 5:19 PM EDTSpecial Weather StatementCTPCameron26 min
Jun 13, 5:57 PM EDTSpecial Weather StatementCTPUnion18 min
Jun 13, 6:07 PM EDTSpecial Weather StatementCTPCameron23 min
Jun 13, 6:30 PM EDTSpecial Weather StatementCTPClinton15 min
Jun 13, 6:34 PM EDTSpecial Weather StatementCTPPotter26 min
Jun 13, 6:39 PM EDTSpecial Weather StatementCTPForest21 min
Jun 13, 6:45 PM EDTSpecial Weather StatementCTPClinton15 min
Jun 13, 6:51 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton54 min
Jun 13, 6:54 PM EDTSpecial Weather StatementCTPCentre36 min
Jun 13, 6:58 PM EDTSevere Thunderstorm WarningCTPMcKean, Warren32 min
Jun 13, 7:22 PM EDTSpecial Weather StatementCTPTioga23 min
Jun 13, 7:23 PM EDTSpecial Weather StatementCTPCentre37 min
Jun 13, 7:26 PM EDTSevere Thunderstorm WarningCTPMcKean49 min
Jun 13, 7:34 PM EDTAreal Flood AdvisoryCTPPotter86 min
Jun 13, 7:46 PM EDTSpecial Weather StatementCTPCentre29 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2021Every 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.