Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 60, NWS State College, PA

June 29, 2021McKean County, Warren County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 29, 2021, 9:16 PM EDT for McKean County, Warren County, Pennsylvania. It was in force for 89 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 29, 2021, 9:16 PM EDT (01:16 UTC)
Expired: Jun 29, 2021, 10:45 PM EDT
In force: 89 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties McKean County, PA, Warren County, PA

The radar

The State College radar (KCCX), 94 km from the middle of the area, began a volume at 01:20 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.3 hours before the alert went out and 141 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 281 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1494 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted.

878 
WUUS51 KCTP 300116
SVRCTP
PAC083-123-300245-
/O.NEW.KCTP.SV.W.0060.210630T0116Z-210630T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
916 PM EDT Tue Jun 29 2021

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Southeastern Warren County in north central Pennsylvania...
  McKean County in north central Pennsylvania...

* Until 1045 PM EDT.

* At 916 PM EDT, a severe thunderstorm was located over Wetmore,
  moving east at 25 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...
  Kane, Port Allegany, Sheffield, Smethport, Wetmore, Betula, James
  City, Coryville, Crosby, Cyclone, Ludlow, Westline, Kinzua Bridge
  State Park, Mount Jewett and Bradford Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4162 7820 4162 7841 4161 7842 4161 7848
      4163 7849 4162 7888 4163 7904 4175 7902
      4193 7821
TIME...MOT...LOC 0116Z 256DEG 21KT 4169 7889 

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

KF

2 follow-up statements

412 
WWUS51 KCTP 300139
SVSCTP

Severe Weather Statement
National Weather Service State College PA
939 PM EDT Tue Jun 29 2021

PAC123-300149-
/O.CAN.KCTP.SV.W.0060.000000T0000Z-210630T0245Z/
Warren PA-
939 PM EDT Tue Jun 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WARREN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4162 7889 4179 7884 4193 7821 4162 7820
      4162 7841 4161 7842 4161 7848 4163 7849
      4162 7888
TIME...MOT...LOC 0139Z 259DEG 20KT 4171 7872 

$$

PAC083-300245-
/O.CON.KCTP.SV.W.0060.000000T0000Z-210630T0245Z/
McKean PA-
939 PM EDT Tue Jun 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR SOUTHERN MCKEAN COUNTY...

At 939 PM EDT, a severe thunderstorm was located near Westline,
moving east at 25 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...
Kane, Port Allegany, Smethport, Betula, James City, Coryville,
Crosby, Cyclone, Westline, Kinzua Bridge State Park, Mount Jewett and
Bradford Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4162 7889 4179 7884 4193 7821 4162 7820
      4162 7841 4161 7842 4161 7848 4163 7849
      4162 7888
TIME...MOT...LOC 0139Z 259DEG 20KT 4171 7872 

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

KF

121 
WWUS51 KCTP 300205
SVSCTP

Severe Weather Statement
National Weather Service State College PA
1005 PM EDT Tue Jun 29 2021

PAC083-300245-
/O.CON.KCTP.SV.W.0060.000000T0000Z-210630T0245Z/
McKean PA-
1005 PM EDT Tue Jun 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR SOUTHEASTERN MCKEAN COUNTY...

At 1005 PM EDT, a severe thunderstorm was located over Crosby, moving
east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Port Allegany, Smethport, Betula and Crosby. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4163 7858 4181 7847 4184 7821 4162 7820
      4162 7841 4161 7842 4161 7848 4163 7849
TIME...MOT...LOC 0205Z 265DEG 23KT 4173 7836 

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

KF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 8:56 PM EDT	Heat Advisory	CTP	Columbia, Dauphin, Lancaster, Lebanon, Lycoming, Montour and 5 more	22 hr
Jun 29, 9:10 PM EDT	Special Weather Statement	CTP	Centre	20 min
Jun 29, 9:27 PM EDT	Special Weather Statement	CTP	Centre	18 min
Jun 29, 9:30 PM EDT	Severe Thunderstorm Warning	CTP	Centre	45 min
Jun 29, 10:17 PM EDT	Special Weather Statement	CTP	Sullivan	28 min
Jun 29, 10:27 PM EDT	Special Weather Statement	CTP	Potter	33 min
Jun 29, 10:42 PM EDT	Severe Thunderstorm Warning	CTP	Potter, Tioga	63 min
Jun 29, 10:59 PM EDT	Special Weather Statement	CTP	Lycoming	31 min
Jun 29, 11:23 PM EDT	Special Weather Statement	CTP	Sullivan	22 min
Jun 29, 11:38 PM EDT	Special Weather Statement	CTP	Tioga	67 min
Jun 29, 11:39 PM EDT	Special Weather Statement	CTP	Sullivan	66 min
Jun 30, 6:59 AM EDT	Special Weather Statement	CTP	McKean	46 min
Jun 30, 1:13 PM EDT	Special Weather Statement	CTP	Warren	47 min
Jun 30, 1:46 PM EDT	Special Weather Statement	CTP	Clinton	29 min
Jun 30, 1:59 PM EDT	Special Weather Statement	CTP	McKean	46 min
Jun 30, 2:14 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	50 min
Jun 30, 2:25 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	28 min
Jun 30, 3:15 PM EDT	Special Weather Statement	CTP	Cambria	45 min
Jun 30, 3:24 PM EDT	Special Weather Statement	CTP	Centre	36 min
Jun 30, 3:46 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Montour, Northumberland, Snyder, Union	44 min
Jun 30, 3:59 PM EDT	Special Weather Statement	CTP	Somerset	46 min
Jun 30, 4:22 PM EDT	Special Weather Statement	CTP	Juniata	38 min
Jun 30, 4:42 PM EDT	Special Weather Statement	CTP	Columbia, Montour	48 min
Jun 30, 5:05 PM EDT	Special Weather Statement	CTP	Fulton	40 min
Jun 30, 5:24 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton	48 min
Jun 30, 6:10 PM EDT	Special Weather Statement	CTP	Cumberland	35 min
Jun 30, 6:27 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland	48 min
Jun 30, 7:00 PM EDT	Special Weather Statement	CTP	Dauphin	15 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2021 Every 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.