Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 36, NWS State College, PA

June 14, 2021Cumberland County, York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 14, 2021, 1:12 AM EDT for Cumberland County, York County, Pennsylvania. It was in force for 48 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, 1:12 AM EDT (05:12 UTC)
Expired
Jun 14, 2021, 2:00 AM EDT
In force
48 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cumberland County, PA, York County, PA

The radar

The State College radar (KCCX), 119 km from the middle of the area, began a volume at 05:14 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, 5.2 hours before the alert went out and 136 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 2021-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 298 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 2021-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
298 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
1012 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted.

945 
WUUS51 KCTP 140512
SVRCTP
PAC041-133-140600-
/O.NEW.KCTP.SV.W.0036.210614T0512Z-210614T0600Z/

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

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Northwestern York County in south central Pennsylvania...
  Northeastern Cumberland County in south central Pennsylvania...

* Until 200 AM EDT.

* At 111 AM EDT, a severe thunderstorm was located over Carlisle,
  moving southeast at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Carlisle, Lower Allen, Mechanicsburg, Camp Hill, New Cumberland,
  Plainfield, Schlusser, Valley Green, Boiling Springs, Dillsburg,
  Mount Holly Springs, Shiremanstown, New Kingstown, Siddonsburg,
  Hogestown, Wertzville, Carlisle Springs, Goldsboro, Franklintown
  and Lewisberry.

This includes the following Interstates...
 The Pennsylvania Turnpike from mile markers 219 to 245.
 Interstate 81 from mile markers 42 to 59.
 Interstate 83 from mile markers 29 to 40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4006 7709 4008 7719 4023 7733 4030 7711
      4030 7706 4017 7675 4004 7678 4000 7700
TIME...MOT...LOC 0511Z 301DEG 22KT 4021 7718 

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

Dangelo
1 follow-up statement
138 
WWUS51 KCTP 140539
SVSCTP

Severe Weather Statement
National Weather Service State College PA
139 AM EDT Mon Jun 14 2021

PAC041-133-140600-
/O.CON.KCTP.SV.W.0036.000000T0000Z-210614T0600Z/
York PA-Cumberland PA-
139 AM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EDT
FOR NORTHWESTERN YORK AND NORTHEASTERN CUMBERLAND COUNTIES...

At 139 AM EDT, a severe thunderstorm was located over Siddonsburg,
moving east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

This severe storm will be near...
  Lower Allen, Camp Hill and Siddonsburg around 140 AM EDT.
  New Cumberland around 150 AM EDT.
  Valley Green around 200 AM EDT.

Other locations impacted by this severe thunderstorm include
Franklintown, Lewisberry, Newberrytown, Wellsville, Messiah College,
Ski Roundtop Ski Area, Goldsboro and Capital City Airport.

This includes the following Interstates...
 The Pennsylvania Turnpike from mile markers 228 to 245.
 Interstate 81 from mile markers 51 to 59.
 Interstate 83 from mile markers 29 to 40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4022 7715 4030 7706 4017 7675 4004 7678
      4000 7700
TIME...MOT...LOC 0539Z 289DEG 20KT 4017 7697 

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

Dangelo

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, 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, 4:10 PM EDTSevere Thunderstorm WarningCTPColumbia, Schuylkill50 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.