Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 43, NWS Cleveland, OH

August 11, 1995Erie County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Aug 11, 1995, 10:00 AM EDT for Erie County, Pennsylvania. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Aug 11, 1995, 10:00 AM EDT (14:00 UTC)
Expired
Aug 11, 1995, 12:00 PM EDT
In force
2 hr
Issued by
NWS Cleveland, OH
Area
Whole counties

County Erie County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 2.0 hours before the alert went out and 146 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, Buffalo Intl Airport, NY at 12:00Z on 1995-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1420 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, Buffalo Intl Airport, NY at 12:00Z on 1995-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
1420 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
710 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCLE 111359
FFWCLE
PAC049-111600-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
1000 AM EDT FRI AUG 11 1995
 
THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL NOON EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  PENNSYLVANIA
 
   ...ERIE COUNTY
 
AT 10 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE
THUNDERSTORMS CONTINUING OVER ERIE COUNTY. RADAR ESTIMATES AND REPORTS
FROM SKYWARN OBSERVERS INDICATED ONE TO TWO INCHES OF RAINFALL ACROSS
NORTHERN SECTIONS OF ERIE COUNTY IN LESS THAN AN HOURS TIME. SHOWERS AND
THUNDERSTORMS WILL CONTINUE TO MOVE IN OFF THE LAKE THROUGH AT LEAST 11
AM...AND ADDITIONAL RAINFALL WILL CAUSE FLOODING.
 
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 GROUND.
 
GERARD

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, Aug 11, 7:28 AM EDT, 2 hours 32 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, 9:52 AM EDTSevere Thunderstorm WarningCLECrawford68 min
Aug 11, 11:01 AM EDTSevere Thunderstorm WarningCLECrawford45 min

Nearby

Flash Flood Warnings in Pennsylvania, 1995Every flash flood 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.