Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 83, NWS Wilmington, OH

December 30, 1990Preble County, Ohio

NWS Wilmington, OH issued this flash flood warning at Dec 30, 1990, 8:14 PM EST for Preble County, Ohio. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Dec 30, 1990, 8:14 PM EST (01:14 UTC)
Expired
Dec 30, 1990, 10:15 PM EST
In force
2 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

County Preble 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, 1.2 hours before the alert went out and 42 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, Dayton/James M C, OH at 00:00Z on 1990-12-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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, Dayton/James M C, OH at 00:00Z on 1990-12-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -76 square meters per square second.1939587897117Sfc1 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
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 KDAY 310119 COR
FFWDAY
OHC003-011-021-023-037-057-065-091-107-109-113-135-149-161-310315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SMALL STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE DAYTON OH
814 PM EST SUN DEC 30 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SMALL
STREAM FLOOD WARNING EFFECTIVE UNTIL 900 AM EST MONDAY DEC 31
FOR THE PEOPLE IN THE FOLLOWING COUNTIES

   IN THE STATE OF OHIO
      ALLEN...AUGLAIZE...CHAMPAIGN...CLARK...DARKE...GREENE...
      HARDIN...LOGAN...MERCER...MIAMI...MONTGOMERY...PREBLE...
      SHELBY...VAN WERT

AT 8 PM FLOODING CONTINUES ACROSS WESTERN OHIO AND THE MIAMI
VALLEY. ONLY LIGHT PRECIPITATION IS EXPECTED ACROSS WESTERN
OHIO THROUGH THE REMAINDER OF THE NIGHT. HOWEVER...THE RUNOFF
FROM THE PREVIOUS RAINFALL IS EXPECTED TO KEEP STREAMS AND CREEKS
OUT OF THIER BANKS THROUGH THE NIGHT.

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

THIS EXTENDS THE PREVIOUS WARNING WHICH EXPIRED AT 815 PM EST
SUNDAY DEC 30, 1990.

TORRENCE
...CORRECTED WORDING SECOND PARAGRAPH...

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Dec 30, 7:58 PM EST, 16 minutes before
OHZ005-010-DD0230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTON OH
800 PM EST SUN DEC 30 1990

A MIXTURE OF RAIN...SNOW AND FREEZING DRIZZLE OR RAIN HAD BEEN REPORTED
OVER WESTERN OHIO BETWEEN 7 AND 8 PM EST.

THE RAIN OR DRIZZLE HAD STARTED TO FREEZE ON EXPOSED METAL SURFACE AND
WITH THE TEMPERATURES ON THE DECREASE...OTHER SURFACE WILL GRADUALLY BE
AFFECTED.

MOTORISTS ARE URGED TO USE CAUTION WHILE TRAVELING ACROSS THE AREA...
ESPECIALLY AROUND BRIDGES AND OVERPASSES...SINCE THEY SHOULD BE ONE OF THE
FIRST AREAS AFFECTED. REMEMBER A LITTLE FREEZING PRECIPITATION GOES A LONG
WAY.

THE PRECIPITATION IS EXPECTED TO CHANGE OVER TO SNOW BEFORE ENDING LATER
TONIGHT.
TORRENCE

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 30, 7:19 PM ESTFlash Flood WarningILNHighland4 hr
Dec 30, 8:14 PM ESTFlash Flood WarningILNClark, Greene, Montgomery2 hr
Dec 30, 8:14 PM ESTFlash Flood WarningILNAllen, Auglaize, Hardin, Van Wert2 hr
Dec 30, 8:14 PM ESTFlash Flood WarningILNChampaign, Logan, Shelby2 hr
Dec 30, 8:14 PM ESTFlash Flood WarningILNDarke, Mercer2 hr
Dec 30, 8:14 PM ESTFlash Flood WarningILNMiami2 hr
Dec 31, 8:55 AM ESTFlash Flood WarningILNDarke, Montgomery, Preble5 hr
Dec 31, 8:55 AM ESTFlash Flood WarningILNAllen, Auglaize, Hardin, Logan5 hr
Dec 31, 8:55 AM ESTFlash Flood WarningILNChampaign, Clark, Miami, Shelby5 hr
Dec 31, 8:55 AM ESTFlash Flood WarningILNMercer, Van Wert5 hr
Dec 31, 8:55 AM ESTFlash Flood WarningILNGreene5 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.