Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 217, NWS Cleveland, OH

July 18, 1994McKean County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 18, 1994, 2:50 PM EDT for McKean County, Pennsylvania. It was in force for 55 min.

The area

The counties it named.

The facts

Issued: Jul 18, 1994, 2:50 PM EDT (18:50 UTC)
Expired: Jul 18, 1994, 3:45 PM EDT
In force: 55 min
Issued by: NWS Cleveland, OH
Area: Whole counties

County McKean County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.8 hours before the alert went out and 125 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: 59 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1379 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 79 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 
TTAA00 KERI 181851 RRA
SVRERI
PAC083-181945-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
250 PM EDT MON JUL 18 1994
 
THE NATIONAL WEATHER SERVICE IN ERIE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  345 PM EDT
FOR THE FOLLOWING LOCATION...
 
IN NORTHWEST PENNSYLVANIA
 
   ...MCKEAN COUNTY
 
AT 245 PM EDT ERIE WEATHER RADAR AND DOPPLER RADAR IN PITTSBURGH SHOWED
A POSSIBLE SEVERE THUNDRSTORM NEAR BRADFORD IN NORTHWEST MCKEAN COUNTY.
THIS STORM WAS MOVING TO THE EAST AT 25 MILES PER HOUR AND WILL CROSS
THE NORTHERN PART OF THE COUNTY DURING THE NEXT HOUR. THE HEAVY RAIN
FROM THIS STORM COULD PRODUCE SOME MINOR FLOODING IN LOW LYING AREAS.
 
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1994 Every 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.