Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 159, NWS State College, PA

July 14, 2021Columbia County, Schuylkill County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 14, 2021, 8:08 PM EDT for Columbia County, Schuylkill County, Pennsylvania. It was in force for 23 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
Jul 14, 2021, 8:08 PM EDT (00:08 UTC)
Expired
Jul 14, 2021, 8:31 PM EDT
In force
23 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Columbia County, PA, Schuylkill County, PA

The radar

The Binghamton radar (KBGM), 139 km from the middle of the area, began a volume at 00:08 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 nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 0.1 hours before the alert went out and 246 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, Washington/Dulle, VA at 00:00Z on 2021-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 196 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, Washington/Dulle, VA at 00:00Z on 2021-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 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
196 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
1304 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

677 
WUUS51 KCTP 150008
SVRCTP
PAC037-107-150100-
/O.NEW.KCTP.SV.W.0159.210715T0008Z-210715T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
808 PM EDT Wed Jul 14 2021

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  North central Schuylkill County in central Pennsylvania...
  Southeastern Columbia County in central Pennsylvania...

* Until 900 PM EDT.

* At 807 PM EDT, a severe thunderstorm was located near Berwick, 
  moving southeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Berwick, Shenandoah, Mcadoo, Girardville, Mifflinville, Almedia,
  Oneida, Nuremburg, Sheppton, Brandonville, Mainville, Shumans,
  Shenandoah Heights, Lime Ridge, Ringtown, Briar Creek, Kelayres,
  Orangeville and Park Place.

For those driving on Interstate 80, this includes areas between the
Bloomsburg-Light Street and Nescopek exits, specifically from mile
markers 238 to 247.

This includes Interstate 81 from mile markers 136 to 139.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4078 7630 4108 7642 4113 7626 4112 7623
      4103 7623 4095 7621 4090 7604 4091 7600
      4088 7596
TIME...MOT...LOC 0007Z 307DEG 26KT 4105 7627 

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

Travis
2 follow-up statements
476 
WWUS51 KCTP 150024
SVSCTP

Severe Weather Statement
National Weather Service State College PA
824 PM EDT Wed Jul 14 2021

PAC037-107-150100-
/O.CON.KCTP.SV.W.0159.000000T0000Z-210715T0100Z/
Schuylkill PA-Columbia PA-
824 PM EDT Wed Jul 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTH CENTRAL SCHUYLKILL AND SOUTHEASTERN COLUMBIA COUNTIES...

At 823 PM EDT, a severe thunderstorm was located south of Berwick, 
moving south at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Shenandoah, Mcadoo, Girardville, Mifflinville, Oneida, Nuremburg, 
Sheppton, Brandonville, Shumans, Shenandoah Heights, Ringtown, Briar 
Creek, Kelayres and Park Place.

For those driving on Interstate 80, this includes areas between the
Mifflinville and Nescopek exits, specifically from mile markers 243
to 247.

This includes Interstate 81 from mile markers 136 to 139.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4078 7630 4099 7636 4107 7623 4103 7623
      4095 7621 4090 7604 4091 7600 4088 7596
TIME...MOT...LOC 0023Z 305DEG 16KT 4101 7622 

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

Dangelo
833 
WWUS51 KCTP 150031
SVSCTP

Severe Weather Statement
National Weather Service State College PA
831 PM EDT Wed Jul 14 2021

PAC037-107-150041-
/O.CAN.KCTP.SV.W.0159.000000T0000Z-210715T0100Z/
Schuylkill PA-Columbia PA-
831 PM EDT Wed Jul 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SCHUYLKILL AND
SOUTHEASTERN COLUMBIA 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 to 55 MPH are still possible 
with this thunderstorm.

LAT...LON 4078 7630 4099 7636 4107 7623 4103 7623
      4095 7621 4090 7604 4091 7600 4088 7596
TIME...MOT...LOC 0029Z 307DEG 26KT 4098 7616 

$$

Dangelo

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 8:01 PM EDTSpecial Weather StatementCTPColumbia44 min
Jul 14, 8:19 PM EDTSpecial Weather StatementCTPLancaster26 min
Jul 14, 9:48 PM EDTSpecial Weather StatementCTPYork27 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.