Alert archive / Pennsylvania / Flash Flood Warnings in 1992

Flash Flood Warning 20, NWS Cleveland, OH

July 21, 1992Warren County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Jul 21, 1992, 1:29 AM EDT for Warren County, Pennsylvania. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jul 21, 1992, 1:29 AM EDT (05:29 UTC)
Expired
Jul 21, 1992, 5:30 AM EDT
In force
4 hr
Issued by
NWS Cleveland, OH
Area
Whole counties

County Warren County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 5.5 hours before the alert went out and 133 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 00:00Z on 1992-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 216 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 00:00Z on 1992-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -49 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
216 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
846 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
-49 m²/s²
0-3 km storm-relative helicity
-13 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KERI 210529
FFWERI
PAC123-210930-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE ERIE PA
129 AM EDT TUE JUL 21 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 530 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE NORTHWEST PART OF PENNSYLVANIA
      WARREN

AT 115 AM ERIE WEATHER RADAR SHOWED AN AREA OF MODERATE TO HEAVY
N IN ERIE COUNTY...MOVING EAST TOWARD WARREN COUNTY PENNSYLVANIA.
THIS RAIN COMBINED WITH THE HEAVY RAIN OF MONDAY...MAY CAUSE
ADDITIONAL FLOODING OF SMALL STREAMS AND CREEKS IN WARREN COUNTY.

A FLASH FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
TO ESCAPE RISING WATER MOVE TO HIGHER GROUND.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE 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 IMMEDIATELY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT.  IT IS IMPORTANT TO
KNOW WHERE YOU ARE IN RELATION TO STREAMS...RIVERS...OR CREEKS THAT
CAN BECOME DEADLY WHEN SWOLLEN BY HEAVY RAIN.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOOD WATERS.  IF FLASH FLOODINGE IS OBSERVED...
ACT QUICKLY.  MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

 SANDSTROM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 8:28 PM EDTFlash Flood WarningCLEMcKean, Warren2 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1992Every flash flood warning in 1992

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.