Alert archive / Pennsylvania / Tornado Warnings in 2012

Tornado Warning 5, NWS State College, PA

August 26, 2012Franklin County, Fulton County, Pennsylvania

NWS State College, PA issued this tornado warning at Aug 26, 2012, 2:01 PM EDT for Franklin County, Fulton County, Pennsylvania. It was in force for 29 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 26, 2012, 2:01 PM EDT (18:01 UTC)
Expired
Aug 26, 2012, 2:30 PM EDT
In force
29 min
Issued by
NWS State College, PA
Area
Storm-based polygon

Counties Franklin County, PA, Fulton County, PA

The radar

The Sterling radar (KLWX), 106 km from the middle of the area, began a volume at 18:03 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 12:00Z, 6.0 hours before the alert went out and 111 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 2012-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 926 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 2012-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 square meters per square second.1939Sfc1 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
926 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
504 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

811 
WFUS51 KCTP 261801
TORCTP
PAC055-057-261830-
/O.NEW.KCTP.TO.W.0005.120826T1801Z-120826T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
201 PM EDT SUN AUG 26 2012

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN FRANKLIN COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  EAST CENTRAL FULTON COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 230 PM EDT

* AT 159 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO NEAR      
  GREENCASTLE. THE STORM CONTAINING THE TORNADO WAS NEAR             
  WARRENTON...MOVING NORTH AT 25 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  GREENCASTLE...
  MERCERSBURG...
  ST. THOMAS...
  FORT LOUDON AND FANNETTSBURG...

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 177 AND 179...I-81 BETWEEN
MILE MARKERS 1 AND 9.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE
30...ROUTE 522.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER INSIDE NOW. DO NOT WAIT TO SEE OR HEAR THE TORNADO. MOVE
TO AN INTERIOR ROOM ON THE LOWEST LEVEL OF A STURDY BUILDING. PUT AS
MANY WALLS BETWEEN YOU AND THE OUTSIDE AS YOU CAN. AVOID WINDOWS.
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4005 7800 4007 7771 3972 7768 3972 7769
      3972 7792
TIME...MOT...LOC 1800Z 172DEG 22KT 3977 7781

$$

FORECASTER: STEINBUGL
1 follow-up statement
875 
WWUS51 KCTP 261824
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
224 PM EDT SUN AUG 26 2012

PAC055-057-261830-
/O.CON.KCTP.TO.W.0005.000000T0000Z-120826T1830Z/
FRANKLIN PA-FULTON PA-
224 PM EDT SUN AUG 26 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM EDT FOR FULTON
AND FRANKLIN COUNTIES...

AT 217 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION THAT MAY BE PRODUCING A 
TORNADO. THIS STORM WAS LOCATED NEAR ST. THOMAS...OR 6 MILES 
NORTHWEST OF GREENCASTLE...MOVING NORTH AT 25 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  FORT LOUDON AND FANNETTSBURG...

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 178 AND 179...I-81 BETWEEN
MILE MARKERS 6 AND 9.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE
30...ROUTE 522.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCAL LAW ENFORCEMENT REPORTED A TORNADO NEAR GREENCASTLE AROUND 2 
PM. THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. 

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

&&

LAT...LON 3980 7769 3979 7776 3980 7794 4005 7800
      4007 7771
TIME...MOT...LOC 1821Z 173DEG 21KT 3989 7778

$$

FORECASTER: STEINBUGL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 2:30 PM EDTTornado WarningCTPFranklin, Huntingdon17 min
Aug 26, 2:51 PM EDTSpecial Weather StatementCTPFranklin24 min
Aug 26, 3:19 PM EDTFlash Flood WatchCTPAdams, Cumberland, Dauphin, Franklin, Fulton, Lancaster and 3 more4 hr
Aug 26, 3:36 PM EDTAreal Flood AdvisoryCTPAdams, Cumberland, Franklin3 hr
Aug 26, 3:46 PM EDTFlash Flood WarningCTPYork3 hr
Aug 26, 4:03 PM EDTSpecial Weather StatementCTPCumberland, Perry57 min
Aug 26, 4:21 PM EDTFlash Flood WarningCTPAdams, Cumberland, Franklin, Perry3 hr
Aug 26, 4:23 PM EDTSevere Thunderstorm WarningCTPCumberland, Juniata, Perry67 min
Aug 26, 4:47 PM EDTSpecial Weather StatementCTPDauphin, Lebanon43 min
Aug 26, 5:22 PM EDTSpecial Weather StatementCTPCentre, Clinton38 min
Aug 26, 5:29 PM EDTSpecial Weather StatementCTPNorthumberland, Snyder, Union31 min
Aug 26, 5:42 PM EDTSpecial Weather StatementCTPClinton, Lycoming33 min
Aug 26, 6:17 PM EDTSpecial Weather StatementCTPLycoming73 min

Nearby

Tornado Warnings in Pennsylvania, 2012Every tornado warning in 2012Tornadoes in 2012

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.