Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 113, NWS State College, PA

July 25, 1994Lycoming County, Tioga County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 25, 1994, 3:19 PM EDT for Lycoming County, Tioga County, Pennsylvania. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Jul 25, 1994, 3:19 PM EDT (19:19 UTC)
Expired
Jul 25, 1994, 4:15 PM EDT
In force
56 min
Issued by
NWS State College, PA
Area
Whole counties

Counties Lycoming County, PA, Tioga County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.3 hours before the alert went out and 198 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, Buffalo Intl Airport, NY at 12:00Z on 1994-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 91 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 1994-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.19395878Sfc1 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
91 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
1176 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
126 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.

000 
TTAA00 KIPT 251919 RRA
SVRIPT
PAC081-117-252015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
319 PM EDT MON JUL 25 1994
 
THE NATIONAL WEATHER SERVICE IN WILLIAMSPORT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH CENTRAL PENNSYLVANIA
 
   ...NORTHERN LYCOMING COUNTY...SOUTHERN TIOGA COUNTY
 
AT 315 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
POSSIBLE SEVERE THUNDERSTORM NEAR THE PENNSYLVANIA GRAND CANYON IN TIOGA
COUNTY. THIS THUNDERSTORM EXTENDED INTO NORTHWEST LYCOMING COUNTY NEAR
SLATE RUN. THE THUNDERSTORM WAS MOVING EAST 25 MPH AND IT WILL PASS
THROUGH BLACKWELL AND MORRIS BY 400 PM EDT.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS: SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 25, 2:25 PM EDT, 54 minutes before
PAZ012-037-038-041-042-045-046-049>052-251930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
225 PM EDT MON JUL 25 1994

...STRONG THUNDERSTORMS MOVING INTO NORTHCENTRAL PENNSYLVANIA...

AT 225 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A STRONG
THUNDERSTORM OVER POTTER COUNTY BETWEEN GALETON AND CARTER CAMP.
OTHER STRONG THUNDERSTORMS WERE SOUTH OF WESTFIELD IN TIOGA COUNTY AND
NEAR STATE CAMP IN WESTERN CLINTON COUNTY.  THE THUNDERSTORMS WERE
MOVING EAST-NORTHEAST AT AROUND 25 MILES AN HOUR.

STRONG THUNDERSTORMS WILL BE MOVING THROUGH WESTERN TIOGA AND CLINTON
COUNTIES THROUGH 330 PM EDT.

ANY THUNDERSTORMS THIS AFTERNOON COULD PRODUCE STRONG GUSTY
WINDS...HEAVY RAIN...FREQUENT DANGEROUS LIGHTNING AND HAIL.  IF
THUNDERSTORMS APPROACH YOUR LOCATION...TAKE SHELTER INSIDE A STRONG
BUILDING AND STAY AWAY FROM WINDOWS.  HEAVY RAIN FROM THUNDERSTORMS
COULD PRODUCE PONDING OF WATER ON ROADS OR MINOR FLOODING IN AREAS OF
POOR DRAINAGE.  NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

GINGRICH
Special weather statement, Jul 25, 2:28 PM EDT, 51 minutes before
PAZ012-037-038-041-042-045-046-049>052-251930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
225 PM EDT MON JUL 25 1994

...STRONG THUNDERSTORMS MOVING INTO NORTHCENTRAL PENNSYLVANIA...

AT 225 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A STRONG
THUNDERSTORM OVER POTTER COUNTY BETWEEN GALETON AND CARTER CAMP.
OTHER STRONG THUNDERSTORMS WERE SOUTH OF WESTFIELD IN TIOGA COUNTY AND
NEAR STATE CAMP IN WESTERN CLINTON COUNTY.  THE THUNDERSTORMS WERE
MOVING EAST-NORTHEAST AT AROUND 25 MILES AN HOUR.

STRONG THUNDERSTORMS WILL BE MOVING THROUGH WESTERN TIOGA AND CLINTON
COUNTIES THROUGH 330 PM EDT.

ANY THUNDERSTORMS THIS AFTERNOON COULD PRODUCE STRONG GUSTY
WINDS...HEAVY RAIN...FREQUENT DANGEROUS LIGHTNING AND HAIL.  IF
THUNDERSTORMS APPROACH YOUR LOCATION...TAKE SHELTER INSIDE A STRONG
BUILDING AND STAY AWAY FROM WINDOWS.  HEAVY RAIN FROM THUNDERSTORMS
COULD PRODUCE PONDING OF WATER ON ROADS OR MINOR FLOODING IN AREAS OF
POOR DRAINAGE.  NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

GINGRICH
Special weather statement, Jul 25, 3:10 PM EDT, 9 minutes before
PAZ012-037-038-041-042-045-046-049>052-252000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
310 PM EDT MON JUL 25 1994

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM EDT FOR ALL OF
NORTHCENTRAL PENNSYLVANIA...

...STRONG THUNDERSTORMS MOVING THROUGH NORTHCENTRAL PENNSYLVANIA...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR ALL OF NORTHCENTRAL PENNSYLVANIA INCLUDING THE WEST BRANCH AND
MIDDLE SUSQUEHANNA VALLEY UNTIL 9 PM EDT.  THE WATCH INCLUDES
TIOGA...BRADFORD... CLINTON...LYCOMING AND SULLIVAN COUNTIES IN
NORTHCENTRAL PENNSYLVANIA.

AT 305 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED STRONG
THUNDERSTORMS NEAR PENNSDALE IN LYCOMING COUNTY.  THESE THUNDERSTORMS
DROPPED ONE QUARTER INCH HAIL AT THE WILLIAMSPORT-LYCOMING COUNTY
AIRPORT AS THEY MOVED THROUGH AT 3 PM.  OTHER STRONG THUNDERSTORMS
WERE BETWEEN GALETON...STONYFORK AND CEDAR RUN. OTHER THUNDERSTORMS
WERE SOUTH OF RENOVO IN CLINTON COUNTY.  THE THUNDERSTORMS WERE MOVING
EAST NORTHEAST AT 25 MPH.

THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH TIOGA...LYCOMING AND
CLINTON COUNTY THROUGH 4 PM EDT.

ANY THUNDERSTORMS THIS AFTERNOON COULD PRODUCE STRONG GUSTY
WINDS...TORRENTIAL DOWNPOURS...FREQUENT DANGEROUS LIGHTNING AND HAIL.
IF THUNDERSTORMS APPROACH YOUR LOCATION...TAKE SHELTER INSIDE A STRONG
BUILDING AND STAY AWAY FROM WINDOWS.  HEAVY RAIN FROM THUNDERSTORMS
COULD PRODUCE PONDING OF WATER ON ROADS OR MINOR FLOODING IN AREAS OF
POOR DRAINAGE.  NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

GINGRICH/GOUGH

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1994Every severe thunderstorm warning in 1994

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.