Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 40, NWS Wilmington, OH

August 19, 1990Ashland County, Ohio

NWS Wilmington, OH issued this flash flood warning at Aug 19, 1990, 4:20 AM EDT for Ashland County, Ohio. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Aug 19, 1990, 4:20 AM EDT (08:20 UTC)
Expired
Aug 19, 1990, 5:15 AM EDT
In force
55 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Ashland 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 00:00Z, 8.3 hours before the alert went out and 190 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 00:00Z on 1990-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 339 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 00:00Z on 1990-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
339 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
58 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 190814
FFWMFD
OHC005-190915-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MANSFIELD OH
ISSUED BY CLEVELAND OH
420 AM EDT SUN AUG 19 1990
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 AM EDT
AND A FLASH FLOOD WARNING EFFECTIVE UNTIL  515 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTH CENTRAL OHIO
          ...ASHLAND
 
AT 410 AM THE ASHLAND COUNTY SHERRIF OFFICE REPORTED TREE DOWN NEAR
LOUDONVILLE. RADAR INDICATED LITTLE MOVEMENT TO THESE STORMS.
 
 
SEVERE THUNDERSTORMS MAY PRODUCE DAMAGING WINDS... FREQUENT
LIGHTNING AND HEAVY RAINS WHICH MAY CAUSE FLOODING OF DRAINAGE
SYSTEMS. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 4:20 AM EDTSevere Thunderstorm WarningILNAshland55 min
Aug 19, 4:49 PM EDTSevere Thunderstorm WarningILNDarke41 min

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.