Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 202, NWS Cleveland, OH

August 11, 1995Crawford County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 11, 1995, 9:52 AM EDT for Crawford County, Pennsylvania. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Aug 11, 1995, 9:52 AM EDT (13:52 UTC)
Expired
Aug 11, 1995, 11:00 AM EDT
In force
68 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Crawford County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 1.9 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 1995-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1671 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 1995-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
1671 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
673 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
115 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 111352 RRA
SVRCLE
PAC039-111500-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
952 AM EDT FRI AUG 11 1995
 
THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  PENNSYLVANIA
 
   ...CRAWFORD COUNTY
 
AT 950 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS ACROSS ERIE COUNTY. THESE STORMS WERE MOVING SOUTH
AT 20 MPH...AND HAVE A HISTORY OF PRODUCING DAMAGING WINDS AND LARGE
HAIL. TREES WERE REPORTED DOWN IN SEVERAL LOCATIONS IN ERIE COUNTY...AND
DIME SIZED HAIL WAS REPORTED AT 940 AM SOUTHEAST OF THE CITY OF ERIE.
 
IF THREATENING WEATHER APPROACHES GET TO A REINFORCED SHELTER AND
PREPARE FOR STRONG... DAMAGING WINDS... LARGE HAIL... VERY HEAVY
RAIN AND LIGHTNING. REMEMBER SEVERE THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE hOR NO ADVANCE
WARNING.
 
GERARD

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, Aug 11, 7:28 AM EDT, 2 hours 24 minutes before
OHZ010>014-020>023-030>033-038-047-PAZ001>003-121200-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CLEVELAND OH
728 AM EDT FRI AUG 11 1995

SEVERE THUNDERSTORMS ARE POSSIBLE OVER NORTHEAST OHIO AND NORTHWEST
PENNSYLVANIA TODAY AND TONIGHT.

THE NATIONAL SEVERE STORMS FORECAST CENTER INDICATES THAT THERE IS A
SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS NORTHWEST PENNSYLVANIA AND
NORTHEAST OHIO TODAY AND TONIGHT.

STRONG THUNDERSTORMS MOVING SOUTHEAST OUT OF ONTARIO MAY AFFECT
NORTHWEST PENNSYLVANIA THIS MORNING. SCATTERED THUNDERSTORMS COULD THEN
REDEVELOP ACROSS NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA THIS
AFTERNOON IN THE HEAT OF THE DAY...AND FINALLY CONDITIONS APPEAR
FAVORABLE FOR THE POSSIBILITY OF A ROUND OF THUNDERSTORMS ACROSS
THE REGION LATE TONIGHT.

CONDITIONS ARE SUCH THAT SOME OF THESE STORMS COULD BE
SEVERE...PRODUCING LARGE HAIL OR DAMAGING WINDS IN EXCESS OF 50 MPH.
PEOPLE IN NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA SHOULD KEEP AN EYE
TO THE SKY AND LISTEN FOR LATER STATEMENTS CONCERNING THIS WEATHER
SITUATION.

GERARD

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 8:43 AM EDTSevere Thunderstorm WarningCLEErie62 min
Aug 11, 9:12 AM EDTTornado WarningCLEErie63 min
Aug 11, 10:00 AM EDTFlash Flood WarningCLEErie2 hr
Aug 11, 11:01 AM EDTSevere Thunderstorm WarningCLECrawford45 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1995Every severe thunderstorm warning in 1995

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.