Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 2, NWS State College, PA

February 12, 2017Bedford County, Fulton County, Huntingdon County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Feb 12, 2017, 8:59 PM EST for Bedford County, Fulton County, Huntingdon County, Pennsylvania. It was in force for 61 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: Feb 12, 2017, 8:59 PM EST (01:59 UTC)
Expired: Feb 12, 2017, 10:00 PM EST
In force: 61 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bedford County, PA, Fulton County, PA, Huntingdon County, PA

The radar

The State College radar (KCCX), 71 km from the middle of the area, began a volume at 02:02 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

Time	Report	Where	Remark
Feb 12, 9:00 PM EST	TSTM WND DMG	1 S Mooresville, PA	WINDS CAUSED A BARN COLLAPSE THAT KILLED FOUR CALVES IN WEST TOWNSHIP.
Feb 12, 9:15 PM EST	TSTM WND DMG	Huntingdon, PA	TREES REPORTED DOWN COUNTYWIDE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 2.0 hours before the alert went out and 158 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 854 m above ground
0-6 km bulk shear: 90 kt
0-1 km storm-relative helicity: -382 m²/s²
0-3 km storm-relative helicity: -107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

563 
WUUS51 KCTP 130159
SVRCTP
PAC009-057-061-130300-
/O.NEW.KCTP.SV.W.0002.170213T0159Z-170213T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
859 PM EST SUN FEB 12 2017

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Eastern Bedford County in south central Pennsylvania...
  Huntingdon County in central Pennsylvania...
  Fulton County in south central Pennsylvania...

* Until 1000 PM EST

* At 857 PM EST, severe thunderstorms were located along a line
  extending from near Williamsburg to near Ursina, moving southeast
  at 45 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect downed tree limbs, causing isolated damage to 
           roofs and siding. 

* Locations impacted include...
  Breezewood, Huntingdon, Waterfall, Dudley, Raystown Dam, Locust
  Grove, Warfordsburg, Harrisonville, Entriken, Saluvia, Big Cove
  Tannery, Rockhill Furnace, Valley-Hi, Shy Beaver, Wells Tannery,
  Needmore, Trough Creek State Park, Fort Littleton, Sideling Hill
  Rest Area and Crystal Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

&&

LAT...LON 3972 7836 4022 7829 4047 7813 4051 7815
      4057 7813 4053 7816 4056 7820 4070 7801
      4056 7784 4050 7782 4040 7791 4036 7786
      4038 7775 4027 7770 4001 7792 3991 7796
      3972 7810
TIME...MOT...LOC 0157Z 304DEG 39KT 4046 7824 3984 7945 

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

KF

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 12, 8:11 PM EST	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	64 min
Feb 12, 9:37 PM EST	Severe Thunderstorm Warning	CTP	Franklin	53 min
Feb 12, 10:35 PM EST	Special Weather Statement	CTP	Cambria	25 min
Feb 12, 10:58 PM EST	Special Weather Statement	CTP	Blair	32 min
Feb 12, 11:09 PM EST	Special Weather Statement	CTP	Cambria	36 min
Feb 12, 11:30 PM EST	Special Weather Statement	CTP	Huntingdon	60 min
Feb 12, 11:38 PM EST	Special Weather Statement	CTP	Clearfield	22 min
Feb 13, 12:16 AM EST	Special Weather Statement	CTP	Bedford, Franklin, Fulton	29 min
Feb 13, 1:35 AM EST	Special Weather Statement	CTP	Clearfield	55 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2017 Every severe thunderstorm warning in 2017

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.