Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 13, NWS State College, PA

April 26, 2008Franklin County, Fulton County, Huntingdon County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Apr 26, 2008, 6:02 PM EDT for Franklin County, Fulton County, Huntingdon County, Pennsylvania. It was in force for 43 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: Apr 26, 2008, 6:02 PM EDT (22:02 UTC)
Expired: Apr 26, 2008, 6:45 PM EDT
In force: 43 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Franklin County, PA, Fulton County, PA, Huntingdon County, PA

The radar

The State College radar (KCCX), 94 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 131 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: 117 J/kg
Mixed-layer CIN: -231 J/kg
Mixed-layer LCL: 1156 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCTP 262203
SVRCTP
PAC055-057-061-262245-
/O.NEW.KCTP.SV.W.0013.080426T2202Z-080426T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
602 PM EDT SAT APR 26 2008

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN FRANKLIN COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  SOUTHEASTERN HUNTINGDON COUNTY IN CENTRAL PENNSYLVANIA...
  NORTHEASTERN FULTON COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 645 PM EDT

* AT 601 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  FORT LITTLETON...OR 16 MILES EAST OF BREEZEWOOD...AND MOVING EAST
  AT 33 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FANNETTSBURG AROUND 610 PM EDT...
  WILLOW HILL AND ST. THOMAS AROUND 620 PM EDT...
  UPPER STRASBURG AND CHAMBERSBURG AROUND 625 PM EDT...
  ROXBURY AND AMBERSON VALLEY AROUND 630 PM EDT...
  SCOTLAND AROUND 635 PM EDT...

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 176 AND 200...I-81 BETWEEN
MILE MARKERS 17 AND 24.

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

VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

SEVERE THUNDERSTORMS CONTAIN DAMAGING WINDS 58 MPH OR STRONGER...OR
HAIL THREE QUARTERS OF AN INCH OR LARGER. SEEK SHELTER INSIDE A
STURDY LOCATION NOW.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 4011 7803 4026 7768 4016 7762 4015 7762
      4014 7761 3995 7749 3987 7807
TIME...MOT...LOC 2202Z 260DEG 28KT 4003 7794

$$

FORECASTER: GARTNER/ONDREJIK/MARTIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 5:03 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Huntingdon	57 min
Apr 26, 5:22 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	53 min
Apr 26, 6:20 PM EDT	Areal Flood Advisory	CTP	Bedford	3 hr
Apr 26, 6:47 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin	43 min
Apr 26, 7:05 PM EDT	Areal Flood Advisory	CTP	Franklin	3 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2008 Every severe thunderstorm warning in 2008

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.