Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 40, NWS State College, PA

June 14, 20215 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 14, 2021, 3:18 PM EDT for 5 counties in Pennsylvania. It was in force for 57 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 14, 2021, 3:18 PM EDT (19:18 UTC)
Expired
Jun 14, 2021, 4:15 PM EDT
In force
57 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Columbia County, PA, Lycoming County, PA, Montour County, PA, Northumberland County, PA, Union County, PA

The radar

The State College radar (KCCX), 120 km from the middle of the area, began a volume at 19:20 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 14, 3:21 PM EDTTSTM WND DMG2 Ne Turbotville, PATREES DOWN ON WIRES.
Jun 14, 3:58 PM EDTTSTM WND DMG3 E Orangeville, PASPORADIC REPORTS OF TREES DOWN AND TREES ON WIRES IN NORTH CENTRE TOWNSHIP IN THE VICINITY OF ROUTE 93.

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 14, 2:06 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.3 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.

764 
WUUS51 KCTP 141918
SVRCTP
PAC037-081-093-097-119-142015-
/O.NEW.KCTP.SV.W.0040.210614T1918Z-210614T2015Z/

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

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Northern Northumberland County in central Pennsylvania...
  Montour County in central Pennsylvania...
  Southeastern Lycoming County in north central Pennsylvania...
  Columbia County in central Pennsylvania...
  Eastern Union County in central Pennsylvania...

* Until 415 PM EDT.

* At 316 PM EDT, severe thunderstorms were located along a line
  extending from Montgomery to New Columbia to Mifflinburg, moving
  east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Bloomsburg, Berwick, Sunbury, Milton, Lewisburg, Danville,
  Montoursville, Northumberland, Mifflinburg, Winfield, Muncy,
  Watsontown, Elysburg, Riverside, Montgomery, Catawissa, Linntown,
  Mifflinville, Lightstreet and Almedia.

For those driving on Interstate 80, this includes areas between the
Mile Run and Nescopek exits, specifically from mile markers 202 to
247.

This includes Interstate 180 from mile markers 1 to 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4089 7628 4081 7631 4086 7680 4088 7680
      4089 7682 4088 7697 4090 7716 4108 7702
      4124 7697 4119 7631 4113 7627 4114 7623
      4103 7623 4095 7621
TIME...MOT...LOC 1916Z 275DEG 32KT 4118 7684 4105 7689 4092 7705 

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

GUSEMAN
1 follow-up statement
252 
WWUS51 KCTP 141939
SVSCTP

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

PAC119-141948-
/O.CAN.KCTP.SV.W.0040.000000T0000Z-210614T2015Z/
Union PA-
339 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN UNION 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 and north central Pennsylvania.

LAT...LON 4088 7629 4081 7631 4086 7680 4088 7680
      4091 7685 4094 7687 4122 7676 4119 7631
      4113 7627 4113 7623 4103 7623 4095 7621
TIME...MOT...LOC 1938Z 279DEG 38KT 4114 7654 4101 7659 4088 7675 

$$

PAC037-081-093-097-142015-
/O.CON.KCTP.SV.W.0040.000000T0000Z-210614T2015Z/
Northumberland PA-Montour PA-Lycoming PA-Columbia PA-
339 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR CENTRAL NORTHUMBERLAND...MONTOUR...SOUTHEASTERN LYCOMING AND
COLUMBIA COUNTIES...

At 338 PM EDT, severe thunderstorms were located along a line
extending from Iola to near Danville to near Sunbury, moving east at
45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Bloomsburg, Berwick, Sunbury, Milton, Danville, Northumberland,
Elysburg, Riverside, Catawissa, Mifflinville, Lightstreet, Almedia,
Montandon, Fernville, Mechanicsville, Buckhorn, Aristes, Numidia,
Jerseytown and Rupert.

For those driving on Interstate 80, this includes areas between the
Milton-Williamsport and Nescopek exits, specifically from mile
markers 213 to 247.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4088 7629 4081 7631 4086 7680 4088 7680
      4091 7685 4094 7687 4122 7676 4119 7631
      4113 7627 4113 7623 4103 7623 4095 7621
TIME...MOT...LOC 1938Z 279DEG 38KT 4114 7654 4101 7659 4088 7675 

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

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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.