Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 42, NWS State College, PA

June 14, 2021Columbia County, Schuylkill County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 14, 2021, 4:10 PM EDT for Columbia County, Schuylkill County, Pennsylvania. It was in force for 50 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
Jun 14, 2021, 4:10 PM EDT (20:10 UTC)
Expired
Jun 14, 2021, 5:00 PM EDT
In force
50 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), 152 km from the middle of the area, began a volume at 20:10 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 14, 2:06 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.2 hours before the alert went out and 237 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 12:00Z on 2021-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 12:00Z on 2021-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.19395878Sfc1 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
2 J/kg
Mixed-layer CIN
-447 J/kg
Mixed-layer LCL
1007 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

794 
WUUS51 KCTP 142010
SVRCTP
PAC037-107-142100-
/O.NEW.KCTP.SV.W.0042.210614T2010Z-210614T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
410 PM EDT Mon Jun 14 2021

The National Weather Service in State College PA has issued a

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

* Until 500 PM EDT.

* At 410 PM EDT, severe thunderstorms were located along a line
  extending from near Rock Glen to near Brandonville to Lavelle,
  moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Tamaqua, Shenandoah, Mahanoy City, Frackville, Ashland, Mcadoo,
  Girardville, Hometown, Tuscarora, New Philadelphia, Oneida, Grier
  City-Park Crest, Lavelle, Altamont, Englewood, Delano, Nuremburg,
  Aristes, Fountain Springs and Sheppton.

For those driving on Interstate 80, this includes areas between the
Mifflinville and Nescopek exits, specifically from mile markers 246
to 247.

This includes Interstate 81 from mile markers 120 to 139.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4069 7584 4076 7642 4078 7638 4080 7639
      4103 7624 4103 7623 4095 7621 4090 7604
      4091 7600 4081 7589 4073 7576
TIME...MOT...LOC 2010Z 270DEG 33KT 4101 7618 4088 7622 4076 7637 

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

GUSEMAN
2 follow-up statements
900 
WWUS51 KCTP 142046
SVSCTP

Severe Weather Statement
National Weather Service State College PA
446 PM EDT Mon Jun 14 2021

PAC037-142056-
/O.CAN.KCTP.SV.W.0042.000000T0000Z-210614T2100Z/
Columbia PA-
446 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN COLUMBIA COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central Pennsylvania.

LAT...LON 4072 7613 4088 7611 4091 7609 4090 7604
      4091 7600 4081 7589 4073 7576 4069 7584
TIME...MOT...LOC 2046Z 270DEG 33KT 4101 7576 4088 7580 4076 7595 

$$

PAC107-142100-
/O.CON.KCTP.SV.W.0042.000000T0000Z-210614T2100Z/
Schuylkill PA-
446 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN SCHUYLKILL COUNTY...

At 446 PM EDT, severe thunderstorms were located along a line
extending from near White Haven to Nesquehoning to near Tamaqua,
moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Tamaqua, Mcadoo, Hometown, Tuscarora, New Philadelphia, Grier
City-Park Crest, Delano, Coaldale, Locust Lake State Park, Snyders,
Kelayres, Middleport, Mary-D, Park Place, Brockton, Trenton and
Kaska.

This includes Interstate 81 from mile markers 130 to 139.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4072 7613 4088 7611 4091 7609 4090 7604
      4091 7600 4081 7589 4073 7576 4069 7584
TIME...MOT...LOC 2046Z 270DEG 33KT 4101 7576 4088 7580 4076 7595 

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

GUSEMAN
017 
WWUS51 KCTP 142103
SVSCTP

Severe Weather Statement
National Weather Service State College PA
503 PM EDT Mon Jun 14 2021

PAC107-142113-
/O.EXP.KCTP.SV.W.0042.000000T0000Z-210614T2100Z/
Schuylkill PA-
503 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SCHUYLKILL COUNTY
HAS EXPIRED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central Pennsylvania.

LAT...LON 4072 7613 4088 7611 4091 7609 4090 7604
      4091 7600 4081 7589 4073 7576 4069 7584
TIME...MOT...LOC 2103Z 270DEG 33KT 4101 7556 4088 7560 4076 7575 

$$

GUSEMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 8:10 PM EDTSevere Thunderstorm WarningCTPMcKean35 min
Jun 13, 8:15 PM EDTSpecial Weather StatementCTPCentre45 min
Jun 13, 8:30 PM EDTSpecial Weather StatementCTPHuntingdon30 min
Jun 13, 8:41 PM EDTSevere Thunderstorm WarningCTPMcKean, Potter64 min
Jun 13, 9:02 PM EDTSpecial Weather StatementCTPHuntingdon43 min
Jun 13, 9:08 PM EDTAreal Flood AdvisoryCTPMcKean67 min
Jun 13, 9:38 PM EDTAreal Flood AdvisoryCTPCentre82 min
Jun 13, 9:47 PM EDTAreal Flood AdvisoryCTPPotter73 min
Jun 13, 10:58 PM EDTAreal Flood AdvisoryCTPCentre2 hr
Jun 13, 11:04 PM EDTAreal Flood AdvisoryCTPHuntingdon, Mifflin116 min
Jun 13, 11:04 PM EDTSpecial Weather StatementCTPJuniata56 min
Jun 13, 11:56 PM EDTSpecial Weather StatementCTPPerry34 min
Jun 14, 12:29 AM EDTSpecial Weather StatementCTPCumberland31 min
Jun 14, 12:37 AM EDTSevere Thunderstorm WarningCTPCumberland, Perry38 min
Jun 14, 1:12 AM EDTSevere Thunderstorm WarningCTPCumberland, York48 min
Jun 14, 11:36 AM EDTSpecial Weather StatementCTPWarren39 min
Jun 14, 12:02 PM EDTSpecial Weather StatementCTPElk58 min
Jun 14, 12:47 PM EDTSevere Thunderstorm WarningCTPCameron, Clearfield, Elk73 min
Jun 14, 1:31 PM EDTSevere Thunderstorm WarningCTPClinton74 min
Jun 14, 1:53 PM EDTSpecial Weather StatementCTPCentre37 min
Jun 14, 2:33 PM EDTSevere Thunderstorm WarningCTPClinton, Lycoming, Union57 min
Jun 14, 3:18 PM EDTSevere Thunderstorm WarningCTPColumbia, Lycoming, Montour, Northumberland, Union57 min
Jun 14, 4:04 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria41 min
Jun 14, 4:10 PM EDTSpecial Weather StatementCTPCentre20 min
Jun 14, 4:16 PM EDTSpecial Weather StatementCTPSomerset14 min
Jun 14, 4:24 PM EDTSpecial Weather StatementCTPBlair21 min
Jun 14, 4:43 PM EDTSpecial Weather StatementCTPBlair47 min
Jun 14, 4:44 PM EDTSpecial Weather StatementCTPSomerset16 min
Jun 14, 5:04 PM EDTSpecial Weather StatementCTPSomerset26 min
Jun 14, 5:49 PM EDTSpecial Weather StatementCTPSomerset26 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.