Alert archive / Pennsylvania / Flash Flood Warnings in 1996

Flash Flood Warning 146, NWS Cleveland, OH

July 29, 1996Crawford County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Jul 29, 1996, 6:43 PM EDT for Crawford County, Pennsylvania. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 29, 1996, 6:43 PM EDT (22:43 UTC)
Expired
Jul 29, 1996, 8:45 PM EDT
In force
2 hr
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 22:46 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, 10.7 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 1996-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 76 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 1996-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
76 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
984 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
85 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 292245
FFWCLE
PAC039-300045-
 
FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
643 PM EDT MON JUL 29 1996
 
THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A
FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS
EFFECTIVE UNTIL  845 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  PENNSYLVANIA
 
   ...CRAWFORD COUNTY
 
PERSISTANT HEAVY RAINS SINCE 4 PM IN PARTS OF CRAWFORD COUNTY HAVE LEAD
TO RAINFALL ACCUMULATIONS OF 1 TO 2 INCHES AS ESTIMATED BY DOPPLER RADAR
AT CLEVELAND. HEAVIEST RAINS HAVE FALLEN FROM NEAR CONNEAUT LAKE
NORTHWARD TO JUST WEST OF SAEGERTOWN. MODERATE TO HEAVY RAIN WILL
CONTINUE TO AFFECT THE AREA THROUGH 730 PM AND WILL LIKELY CAUSE SOME
FLOODING OF ROADWAYS...LOW-LYING AREAS AND SMALL STREAMS.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GRJOUND.

What forecasters said that day

The local office's own words before this flash flood 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 29, 4:57 PM EDT, 1 hour 46 minutes before
OHZ002-003-005>008-017-018-027-028-036-292300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
456 PM EDT MON JUL 29 1996

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM EDT FOR ALL OF
NORTHWEST OHIO...

THIS AREA INCLUDES ALL OF OHIO WEST OF A LINE FROM MANSFIELD TO SANDUSKY
AND INCLUDES THE CITIES OF TOLEDO...FINDLAY...BUCYRUS AND MARION.

STRONG THUNDERSTORMS WERE DEVELOPING OVER NORTHWESTERN OHIO THIS
AFTERNOON AND WILL CONTINUE TO DEVELOP INTO THE EVENING.  THE AIRMASS
IS UNSTABLE AND SOME OF THE STORMS COULD BECOME SEVERE WITH LARGE HAIL
AND DAMAGING WINDS OF 58 MPH OR MORE.

THE THREAT FOR SEVERE THUNDERSTORMS WILL CONTINUE INTO THE EVENING HOURS
WHEN THE STORMS WILL BEGIN TO WEAKEN AS THE SUN SETS.  ALSO...MANY OF
THE STORMS WILL PRODUCE HEAVY RAINS WHICH MAY FLOOD LOW-LYING AREAS
...ROADWAYS AND SMALL STREAMS.

A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR
SEVERE WEATHER IN 6AN CLOSE TO THE WATCH AREA.  PERSONS IN THESE AREAS
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS.  LISTEN TO
NOAA WEATHER RADIO OR LOCAL MEDIA FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

ADAMS

Nearby

Flash Flood Warnings in Pennsylvania, 1996Every flash flood 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.