Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 61, NWS State College, PA

June 29, 2021Centre County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 29, 2021, 9:30 PM EDT for Centre County, Pennsylvania. It was in force for 45 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, 9:30 PM EDT (01:30 UTC)
Expired: Jun 29, 2021, 10:15 PM EDT
In force: 45 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Centre County, PA

The radar

The State College radar (KCCX), 43 km from the middle of the area, began a volume at 01:32 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, 1.5 hours before the alert went out and 228 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: 990 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1639 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

757 
WUUS51 KCTP 300130
SVRCTP
PAC027-300215-
/O.NEW.KCTP.SV.W.0061.210630T0130Z-210630T0215Z/

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

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Central Centre County in central Pennsylvania...

* Until 1015 PM EDT.

* At 930 PM EDT, a severe thunderstorm was located over Bellefonte,
  moving northeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  State College, Bellefonte, Pleasant Gap, Lamar, Lemont, Zion,
  Houserville, Centre Hall, Milesburg, Blanchard, Rebersburg,
  Madisonburg, Bald Eagle State Park, Howard, Beech Creek,
  Unionville, McCall Dam State Park, Pennsylvania State University
  and University Park Airport.

For those driving on Interstate 80, this includes areas between the
Snow Shoe and Lamar exits, specifically from mile markers 154 to 170.

This includes Interstate 99 from mile markers 73 to 85.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4106 7756 4105 7758 4097 7751 4099 7735
      4103 7718 4104 7716 4103 7715 4077 7786
      4093 7794 4110 7763
TIME...MOT...LOC 0130Z 239DEG 27KT 4093 7774 

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

KF

3 follow-up statements

052 
WWUS51 KCTP 300143
SVSCTP

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

PAC027-300215-
/O.CON.KCTP.SV.W.0061.000000T0000Z-210630T0215Z/
Centre PA-
943 PM EDT Tue Jun 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR CENTRAL CENTRE COUNTY...

At 943 PM EDT, a severe thunderstorm was located near Zion, moving
northeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Bellefonte, Pleasant Gap, Lamar, Lemont, Zion, Houserville, Centre
Hall, Milesburg, Blanchard, Rebersburg, Madisonburg, Bald Eagle State
Park, Howard, Beech Creek and McCall Dam State Park.

For those driving on Interstate 80, this includes areas between the
Snow Shoe and Lamar exits, specifically from mile markers 154 to 170.

This includes Interstate 99 from mile markers 77 to 85.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4079 7780 4097 7786 4110 7763 4106 7756
      4105 7758 4097 7751 4099 7735 4103 7718
      4104 7716 4103 7715
TIME...MOT...LOC 0143Z 239DEG 25KT 4096 7767 

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

KF

019 
WWUS51 KCTP 300153
SVSCTP

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

PAC027-300215-
/O.CON.KCTP.SV.W.0061.000000T0000Z-210630T0215Z/
Centre PA-
953 PM EDT Tue Jun 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR EAST CENTRAL CENTRE COUNTY...

At 953 PM EDT, a severe thunderstorm was located near Bald Eagle
State Park, moving northeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Lamar, Zion, Rebersburg, Madisonburg, Bald Eagle State Park, Howard,
Beech Creek and McCall Dam State Park.

For those driving on Interstate 80, this includes areas between the
Bellefonte and Lamar exits, specifically from mile markers 162 to
170.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4085 7765 4098 7772 4107 7758 4106 7756
      4105 7758 4097 7751 4099 7735 4103 7718
      4104 7716 4103 7715 4092 7745
TIME...MOT...LOC 0153Z 241DEG 25KT 4096 7761 

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

KF

015 
WWUS51 KCTP 300207
SVSCTP

Severe Weather Statement
National Weather Service State College PA
1007 PM EDT Tue Jun 29 2021

PAC027-300217-
/O.EXP.KCTP.SV.W.0061.000000T0000Z-210630T0215Z/
Centre PA-
1007 PM EDT Tue Jun 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CENTRE COUNTY
WILL EXPIRE AT 1015 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 4085 7765 4098 7772 4107 7758 4106 7756
      4105 7758 4097 7751 4099 7735 4103 7718
      4104 7716 4103 7715 4092 7745
TIME...MOT...LOC 0207Z 239DEG 27KT 4099 7753 

$$

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, 9:16 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	89 min
Jun 29, 9:27 PM EDT	Special Weather Statement	CTP	Centre	18 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.