Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 56, NWS Cleveland, OH

May 10, 1996Crawford County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at May 10, 1996, 5:18 PM EDT for Crawford County, Pennsylvania. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 10, 1996, 5:18 PM EDT (21:18 UTC)
Expired
May 10, 1996, 6:15 PM EDT
In force
57 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 129 km from the middle of the area, began a volume at 21:20 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

Pittsburgh, PA (KPIT), launched 12:00Z, 9.3 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 1996-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 414 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 1996-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 272 square meters per square second.193958Sfc1 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
414 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
1121 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
272 m²/s²
0-3 km storm-relative helicity
232 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCLE 102117
SVRCLE
PAC039-102215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
518 PM EDT FRI MAY 10 1996
 
THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  PENNSYLVANIA
 
   ...CRAWFORD COUNTY
 
AT 510 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM JUST EAST OF CONNEAUTVILLE. THIS STORM WAS MOVING EAST
NORTHEAST AT 40 MPH. SOME TOWNS IN THE PATH OF THIS STORM ARE MOSLERTON
AND CAMBRIDGE SPRINGS.
 
REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
 
JOLLY

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, May 10, 3:37 PM EDT, 1 hour 41 minutes before
OHZ020-027-036-102340-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
336 PM EDT FRI MAY 10 1996

...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE COUNTIES
WYANDOT...CRAWFORD... MARION UNTIL 800 PM EDT...

WARM MOIST AIR FROM THE GULF AND A COLD FRONT MOVING EAST INTO OHIO
HAS THE CAUSE THE ATMOSPHERE TO BECOME VERY UNSTABLE. THEREFORE A
SEVERE THUNDERSTORM HAS BEEN ISSUE FOR THE COUNTIES OF WYANDOT...
CRAWFORD...AND MARION UNTIL 8 PM EDT.

IF YOU PLAN TO BE OUTDOORS THIS EVENING...CHECK THE LATEST WEATHER
INFORMATION AND KEEP A WEATHER EYE ON THE SKY.

A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS ARE
POSSIBLE IN AND NEAR THE WATCH AREA.SEVERE THUNDERSTORMnS CAN
AND DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
PERSONS SHOULD WATCH FOR THREATENING WEATHER AND LISTEN TO
NOAA WEATHER RADIO... COMMERCIAL RADIO OR TELEVISION FOR FURTHER
INFORMATION.
Special weather statement, May 10, 3:44 PM EDT, 1 hour 34 minutes before
OHZ020-027-036-102345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
344 PM EDT FRI MAY 10 1996

...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE COUNTIES
WYANDOT...CRAWFORD... MARION UNTIL 900 PM EDT...

WARM MOIST AIR FROM THE GULF AND A COLD FRONT MOVING EAST INTO OHIO
HAS THE CAUSE THE ATMOSPHERE TO BECOME VERY UNSTABLE. THEREFORE A
SEVERE THUNDERSTORM HAS BEEN ISSUE FOR THE COUNTIES OF WYANDOT...
CRAWFORD...AND MARION UNTIL 9 PM EDT.

IF YOU PLAN TO BE OUTDOORS THIS EVENING...CHECK THE LATEST WEATHER
INFORMATION AND KEEP A WEATHER EYE ON THE SKY.

A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS ARE
POSSIBLE IN AND NEAR THE WATCH AREA. SEVERE THUNDERSTORMS CAN
AND DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PERSONS
SHOULD WATCH FOR THREATENING WEATHER AND LISTEN TO NOAA WEATHER RADIO...
COMMERCIAL RADIO OR TELEVISION FOR FURTHER INFORMATION.
Special weather statement, May 10, 3:51 PM EDT, 1 hour 27 minutes before
PAZ002-003-520-102355-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
351 PM EDT FRI MAY 10 1996

...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE COUNTIES
ERIE AND CRAWFORD IN NORTHWEST PENNSYLVANIA UNTIL 900 PM EDT...

WARM MOIST AIR FROM THE GULF AND A COLD FRONT MOVING EAST INTO OHIO
HAS THE CAUSE THE ATMOSPHERE TO BECOME VERY UNSTABLE. THEREFORE A
SEVERE THUNDERSTORM WATCH HAS BEEN ISSUE FOR THE COUNTIES OF ERIE
AND CRAWFORD IN NORTHWEST PENNSYLVANIA UNTIL 9 PM EDT.

IF YOU PLAN TO BE OUTDOORS THIS EVENING...CHECK THE LATEST WEATHER
INFORMATION AND KEEP A WEATHER EYE ON THE SKY.

A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS ARE
POSSIBLE IN AND NEAR THE WATCH AREA. REMEMBER...SEVERE THUNDERSTORMS
CAN AND DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
PERSONS SHOULD WATCH FOR THREATENING WEATHER AND LISTEN TO NOAA WEATHER
RADIO... COMMERCIAL RADIO OR TELEVISION FOR FURTHER INFORMATION.

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 8:02 PM EDTFlash Flood WarningCLECrawford3 hr
May 9, 8:16 PM EDTSevere Thunderstorm WarningCLECrawford44 min
May 10, 3:50 PM EDTFlash Flood WarningCLECrawford, Erie115 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1996Every severe thunderstorm warning in 1996

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.