Alert archive / Pennsylvania / Tornado Warnings in 2014

Tornado Warning 14, NWS State College, PA

August 21, 2014Cumberland County, Perry County, Pennsylvania

NWS State College, PA issued this tornado warning at Aug 21, 2014, 3:16 PM EDT for Cumberland County, Perry County, Pennsylvania. It was in force for 44 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: Aug 21, 2014, 3:16 PM EDT (19:16 UTC)
Expired: Aug 21, 2014, 4:00 PM EDT
In force: 44 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Cumberland County, PA, Perry County, PA

The radar

The State College radar (KCCX), 83 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.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.3 hours before the alert went out and 148 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: 61 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 794 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

971 
WFUS51 KCTP 211916
TORCTP
PAC041-099-212000-
/O.NEW.KCTP.TO.W.0014.140821T1916Z-140821T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
316 PM EDT THU AUG 21 2014

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL CUMBERLAND COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  SOUTHWESTERN PERRY COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 400 PM EDT
    
* AT 316 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  NEAR COLONEL DENNING STATE PARK...AND MOVING SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CARLISLE...PLAINFIELD...COLONEL DENNING STATE PARK...BLOSERVILLE
  AND BLAIN.

THIS INCLUDES THE FOLLOWING INTERSTATES...
 THE PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 214 AND 222.
 INTERSTATE 81 BETWEEN MILE MARKERS 38 AND 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4037 7754 4039 7754 4042 7748 4020 7721
      4012 7733
TIME...MOT...LOC 1916Z 324DEG 20KT 4036 7747 

$$

LA CORTE

1 follow-up statement

458 
WWUS51 KCTP 211936
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
336 PM EDT THU AUG 21 2014

PAC041-099-212000-
/O.CON.KCTP.TO.W.0014.000000T0000Z-140821T2000Z/
CUMBERLAND PA-PERRY PA-
336 PM EDT THU AUG 21 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM EDT FOR NORTH
CENTRAL CUMBERLAND AND SOUTH CENTRAL PERRY COUNTIES...
    
AT 336 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER COLONEL
DENNING STATE PARK...MOVING SOUTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
CARLISLE...PLAINFIELD...COLONEL DENNING STATE PARK AND BLOSERVILLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4031 7749 4035 7740 4020 7721 4012 7733
TIME...MOT...LOC 1936Z 331DEG 20KT 4029 7739 

$$

LA CORTE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 8:28 PM EDT	Special Weather Statement	CTP	Elk	47 min
Aug 21, 1:34 PM EDT	Special Weather Statement	CTP	Montour	56 min
Aug 21, 1:44 PM EDT	Special Weather Statement	CTP	Union	31 min
Aug 21, 1:52 PM EDT	Severe Thunderstorm Warning	CTP	Northumberland, Snyder, Union	33 min
Aug 21, 1:55 PM EDT	Special Weather Statement	CTP	Centre	35 min
Aug 21, 2:00 PM EDT	Special Weather Statement	CTP	Juniata, Mifflin	60 min
Aug 21, 2:11 PM EDT	Special Weather Statement	CTP	Clearfield	34 min
Aug 21, 2:29 PM EDT	Special Weather Statement	CTP	Centre	31 min
Aug 21, 2:41 PM EDT	Severe Thunderstorm Warning	CTP	Montour, Northumberland, Union	22 min
Aug 21, 2:45 PM EDT	Special Weather Statement	CTP	Centre	30 min
Aug 21, 2:48 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Juniata, Mifflin, Perry	57 min
Aug 21, 3:02 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Schuylkill, Snyder, Union	58 min
Aug 21, 3:19 PM EDT	Special Weather Statement	CTP	Clearfield	26 min
Aug 21, 3:47 PM EDT	Special Weather Statement	CTP	Mifflin	28 min
Aug 21, 3:55 PM EDT	Special Weather Statement	CTP	Clearfield	35 min
Aug 21, 3:55 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Perry, York	65 min
Aug 21, 4:14 PM EDT	Areal Flood Advisory	CTP	Cumberland, Perry	2 hr
Aug 21, 4:25 PM EDT	Special Weather Statement	CTP	Clearfield	35 min
Aug 21, 4:31 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Potter, Tioga	59 min
Aug 21, 4:36 PM EDT	Areal Flood Advisory	CTP	Clearfield	114 min
Aug 21, 4:38 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	52 min
Aug 21, 4:40 PM EDT	Special Weather Statement	CTP	Cameron	35 min
Aug 21, 4:43 PM EDT	Special Weather Statement	CTP	Mifflin	32 min
Aug 21, 5:03 PM EDT	Areal Flood Advisory	CTP	Cumberland, Perry	117 min
Aug 21, 5:17 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield	58 min
Aug 21, 5:28 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Tioga	62 min
Aug 21, 5:30 PM EDT	Special Weather Statement	CTP	Cumberland	45 min
Aug 21, 5:34 PM EDT	Special Weather Statement	CTP	Tioga	41 min
Aug 21, 5:35 PM EDT	Areal Flood Warning	CTP	Potter, Tioga	3 hr
Aug 21, 5:54 PM EDT	Areal Flood Warning	CTP	Clearfield	3 hr
Aug 21, 6:03 PM EDT	Areal Flood Advisory	CTP	Lycoming	117 min
Aug 21, 6:05 PM EDT	Special Weather Statement	CTP	York	40 min
Aug 21, 6:15 PM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, York	3 hr
Aug 21, 6:26 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Northumberland, Union	39 min
Aug 21, 6:46 PM EDT	Special Weather Statement	CTP	Potter	44 min
Aug 21, 7:19 PM EDT	Special Weather Statement	CTP	York	26 min
Aug 21, 7:34 PM EDT	Severe Thunderstorm Warning	CTP	York	26 min

Nearby

Tornado Warnings in Pennsylvania, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.