Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 25, NWS Wilmington, OH

July 12, 1990Ashland County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jul 12, 1990, 12:01 AM EDT for Ashland County, Ohio. It was in force for 119 min.

The area

The counties it named.

The facts

Issued
Jul 12, 1990, 12:01 AM EDT (04:01 UTC)
Expired
Jul 12, 1990, 2:00 AM EDT
In force
119 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, 4.0 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 1990-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1990-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
583 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
156 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 120401
FFWMFD
OHC005-120600-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE MANSFIELD OH
ISSUED BY CLEVELAND OH
1201 AM EDT THU JUL 12 1990
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL  200 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTH CENTRAL OHIO
          ...ASHLAND
 
AT 1150 PM WEATHER SERVICE RADAR SHOWED AN AREA OF MODERATE TO HEAVY
RAIN OVER NORTHERN ASHLAND COUNTY. THIS RAIN MOVED INTO THE NORTHERN
PORTIONS OF THE COUNTY AFTER 10:30 PM AND HAS CAUSED SOME MINOR STREET
FLOODING. RADAR SHOWED THE BACK EDGE OF THE RAIN OVER THE WESTERN END
OF THE COUNTY. THE AREA WAS MOVING EAST AROUND 20 MPH AND WILL REACH
THE EASTERN COUNTY BORDER AROUND 1 AM.
 
 
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 10:50 PM EDTFlash Flood WarningILNMontgomery, Preble3 hr
Jul 11, 10:50 PM EDTFlash Flood WarningILNClark3 hr
Jul 12, 5:21 AM EDTFlash Flood WarningILNAshland3 hr
Jul 12, 5:30 AM EDTFlash Flood WarningILNCrawford, Richland3 hr
Jul 12, 8:30 AM EDTFlash Flood WarningILNAshland, Richland2 hr
Jul 12, 9:10 AM EDTFlash Flood WarningILNCrawford, Morrow3 hr
Jul 12, 9:10 AM EDTFlash Flood WarningILNKnox3 hr
Jul 12, 10:20 AM EDTFlash Flood WarningILNAshland, Crawford, Knox, Morrow, Richland5 hr
Jul 12, 10:29 AM EDTFlash Flood WarningILNGreene3 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.