Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 294, NWS Cleveland, OH

September 9, 1994Crawford County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 9, 1994, 1:02 PM EDT for Crawford County, Pennsylvania. It was in force for 23 min.

The area

The counties it named.

The facts

Issued
Sep 9, 1994, 1:02 PM EDT (17:02 UTC)
Expired
Sep 9, 1994, 1:25 PM EDT
In force
23 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Crawford County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 5.0 hours before the alert went out and 142 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, Pittsburgh, PA at 12:00Z on 1994-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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, Pittsburgh, PA at 12:00Z on 1994-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
5 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
1030 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
65 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 KCLE 091704 RRA
SVRCLE
PAC039-091745-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
102 PM EDT FRI SEP 9 1994
 
THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  145 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  PENNSYLVANIA
 
   ...CRAWFORD COUNTY
 
AT 100 PM...DOPPLER RADAR IN CLEVELAND INDICATED A SEVERE THUNDERSTORM
TO THE EAST OF MEADVILLE NEAR GUYS MILLS. THE STORM WAS MOVING SOUTHEAST
AT 25 MPH.
 
SEVERE THUNDERSTORMS MAY PRODUCE DAMAGING WINDS... FREQUENT
LIGHTNING AND HEAVY RAINS WHICH MAY CAUSE FLOODING OF DRAINAGE
SYSTEMS. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 
 
GABRIC

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, Sep 9, 12:21 PM EDT, 41 minutes before
PAZ001>003-091800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1221 PM EDT FRI SEP 9 1994

STRONG THUNDERSTORMS HAD DEVELOPED OVER NORTHWEST PENNSYLVANIA.

AT 1220 PM...DOPPLER RADAR IN CLEVELAND INDICATED A STRONG THUNDERSTORM
OVER CRAWFORD COUNTY PENNSYLVANIA TO THE NORTH OF MEADEVILLE. THE STORM
WAS MOVING SOUTHEAST AROUND 25 MPH AND WILL CROSS THE REMAINDER OF
CRAWFORD COUNTY BY 120 PM.

THIS STORM WILL PRODUCE BRIEF HEAVY RAIN...GUSTY WINDS AND SMALL HAIL.
IF THREATENING WEATER APPROACHES...GO INSIDE TO THE LOWER LEVELS OF
A SUBSTANTIAL BUILDING. LISTEN TO NOAA WEATHER RADIO FOR UPDATES.

GABRIC
Special weather statement, Sep 9, 12:23 PM EDT, 39 minutes before
PAZ001>003-091800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1221 PM EDT FRI SEP 9 1994

STRONG THUNDERSTORMS HAD DEVELOPED OVER NORTHWEST PENNSYLVANIA.

AT 1220 PM...DOPPLER RADAR IN CLEVELAND INDICATED A STRONG THUNDERSTORM
OVER CRAWFORD COUNTY PENNSYLVANIA TO THE NORTH OF MEADEVILLE. THE STORM
WAS MOVING SOUTHEAST AROUND 25 MPH AND WILL CROSS THE REMAINDER OF
CRAWFORD COUNTY BY 120 PM.

THIS STORM WILL PRODUCE BRIEF HEAVY RAIN...GUSTY WINDS AND SMALL HAIL.
IF THREATENING WEATER APPROACHES...GO INSIDE TO THE LOWER LEVELS OF
A SUBSTANTIAL BUILDING. LISTEN TO NOAA WEATHER RADIO FOR UPDATES.

GABRIC

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.