Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 69, NWS Cleveland, OH

September 2, 1990Guernsey County, Ohio

NWS Cleveland, OH issued this flash flood warning at Sep 2, 1990, 6:02 PM EDT for Guernsey County, Ohio. It was in force for 118 min.

The area

The counties it named.

The facts

Issued
Sep 2, 1990, 6:02 PM EDT (22:02 UTC)
Expired
Sep 2, 1990, 8:00 PM EDT
In force
118 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Guernsey County, OH

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.0 hours before the alert went out and 125 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 1990-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 692 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 1990-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
692 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
944 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCAK 022203
FFWCAK
OHC059-030000-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AKRON OH
602 PM EDT SUN SEP 2 1990
 
THE NATIONAL WEATHER SERVICE IN AKRON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  700 PM EDT
AND A FLASH FLOOD WARNING EFFECTIVE UNTIL  800 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN EAST CENTRAL OHIO
          ...GUERNSEY
 
AT 555 PM WEATHER SERVICE RADAR INDICATED POSSIBLE SEVERE
THUNDERSTORMS WITH VERY HEAVY RAINS COVERING MUCH OF GUERNSEY COUNTY.
THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MPH.
 
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
THOMPSON

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 5:25 PM EDTSevere Thunderstorm WarningCLEBelmont65 min
Sep 2, 6:02 PM EDTSevere Thunderstorm WarningCLEGuernsey58 min
Sep 2, 7:45 PM EDTFlash Flood WarningCLENoble3 hr

Nearby

Flash Flood Warnings in Ohio, 1990Every flash flood warning in 1990

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.