Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 78, NWS Wilmington, OH

December 30, 1990Highland County, Ohio

NWS Wilmington, OH issued this flash flood warning at Dec 30, 1990, 7:19 PM EST for Highland County, Ohio. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Dec 30, 1990, 7:19 PM EST (00:19 UTC)
Expired: Dec 30, 1990, 11:15 PM EST
In force: 4 hr
Issued by: NWS Wilmington, OH
Area: Whole counties

County Highland 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

Dayton/James M C, OH (KDAY), launched 00:00Z, 0.3 hours before the alert went out and 95 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 526 m above ground
0-6 km bulk shear: 85 kt
0-1 km storm-relative helicity: -76 m²/s²
0-3 km storm-relative helicity: 334 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 KCVG 310020
FFWCVG
OHC071-310415-
 
BULLETIN - EBS ACTIVATION REQUESTED
URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE CINCINNATI OH
719 PM EST SUN DEC 30 1990
 
THE NATIONAL WEATHER SERVICE IN CINCINNATI HAS ISSUED A
URBAN FLOOD WARNING EFFECTIVE UNTIL 1115 PM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHWEST OHIO
          ...HIGHLAND
 
AT 700 PM EST THE HIGHLAND COUNTY SHERIFF REPORTED THAT WATER
CONTINUED TO COVER SECONDARY ROADS THROUGHOUT THE COUNTY. NATIONAL
WEATHER SERVICE RADAR SHOWED THAT RAIN HAD MOVED OUT OF THE AREA.
HOWEVER RUNOFF WILL CONTINUE TO BE A PROBLEM THROUGH THE NIGHT.
 
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 GJREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
JN

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 30, 8:14 PM EST	Flash Flood Warning	ILN	Clark, Greene, Montgomery	2 hr
Dec 30, 8:14 PM EST	Flash Flood Warning	ILN	Allen, Auglaize, Hardin, Van Wert	2 hr
Dec 30, 8:14 PM EST	Flash Flood Warning	ILN	Champaign, Logan, Shelby	2 hr
Dec 30, 8:14 PM EST	Flash Flood Warning	ILN	Darke, Mercer	2 hr
Dec 30, 8:14 PM EST	Flash Flood Warning	ILN	Preble	2 hr
Dec 30, 8:14 PM EST	Flash Flood Warning	ILN	Miami	2 hr
Dec 31, 8:55 AM EST	Flash Flood Warning	ILN	Darke, Montgomery, Preble	5 hr
Dec 31, 8:55 AM EST	Flash Flood Warning	ILN	Allen, Auglaize, Hardin, Logan	5 hr
Dec 31, 8:55 AM EST	Flash Flood Warning	ILN	Champaign, Clark, Miami, Shelby	5 hr
Dec 31, 8:55 AM EST	Flash Flood Warning	ILN	Mercer, Van Wert	5 hr
Dec 31, 8:55 AM EST	Flash Flood Warning	ILN	Greene	5 hr

Nearby

Flash Flood Warnings in Ohio, 1990 Every 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.