Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 60, NWS Wilmington, OH

December 30, 19904 counties in Ohio

NWS Wilmington, OH issued this flash flood warning at Dec 30, 1990, 3:16 AM EST for 4 counties in Ohio. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Dec 30, 1990, 3:16 AM EST (08:16 UTC)
Expired
Dec 30, 1990, 6:15 AM EST
In force
3 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

Counties Auglaize County, OH, Darke County, OH, Mercer County, OH, Van Wert 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, 8.3 hours before the alert went out and 74 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 1990-12-30Temperature 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, Dayton/James M C, OH at 00:00Z on 1990-12-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 391 square meters per square second.1939587897Sfc1 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
622 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
391 m²/s²
0-3 km storm-relative helicity
432 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 300818
FFWDAY
OHC003-011-037-065-091-107-161-301115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
URBAN AND SMALL STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE DAYTON OH
316 AM EST SUN DEC 30 1990


THE NATIONAL WEATHER SERVICE HAS ISSUED A SMALL STREAM
FLOOD WARNING EFFECTIVE UNTIL 615 AM EST FOR PEOPLE IN
THE FOLLOWING COUNTIES

   IN THE STATE OF OHIO
      ALLEN...AUGLAIZE...DARKE...HARDIN...LOGAN...MERCER...VAN
      WERT

RAIN OVER WEST CENTRAL OHIO HAS CLOSED MANY ROADS AND HAS PUSHED
CREEKS AND STREAMS OVER THEIR BANKS. SHERIFFS DEPARTMENTS ACROSS
THE AREA CONTINUE TO REPORT PROBLEMS THROUGHOUT THEIR COUNTIES.
RAIN OF LIGHT TO MODERATE INTENSITY WILL CONTINUE OVER WESTERN
OHIO THROUGH 6AM CAUSING FURTHER PROBLEMS IN THESE AREAS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE 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 IMMEDIATELY.
MOVE TO HIGHER GROUND.

 THIS WARNING IS FIRST ISSUANCE FOR ALLEN...HARDIN AND LOGAN
 COUNTIES. THIS WARNING EXTENDS WARNINGS ISSUED FOR DARKE...
 MERCER...VAN WERT AND AUGLAIZE COUNTIES.

 MS

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 29, 9:14 PM ESTFlash Flood WarningILNMercer, Van Wert3 hr
Dec 29, 9:36 PM ESTFlash Flood WarningILNDarke3 hr
Dec 30, 12:01 AM ESTFlash Flood WarningILNAuglaize3 hr
Dec 30, 12:29 AM ESTFlash Flood WarningILNDarke, Mercer, Van Wert3 hr
Dec 30, 12:53 AM ESTFlash Flood WarningILNCrawford, Morrow, Richland4 hr
Dec 30, 12:53 AM ESTFlash Flood WarningILNAshland4 hr
Dec 30, 3:16 AM ESTFlash Flood WarningILNAllen, Hardin, Logan3 hr
Dec 30, 5:07 AM ESTFlash Flood WarningILNAshland, Richland3 hr
Dec 30, 5:07 AM ESTFlash Flood WarningILNCrawford, Morrow3 hr
Dec 30, 9:25 AM ESTFlash Flood WarningILNMorrow3 hr
Dec 30, 9:45 AM ESTFlash Flood WarningILNGreene, Montgomery3 hr
Dec 30, 9:45 AM ESTFlash Flood WarningILNChampaign3 hr
Dec 30, 10:17 AM ESTFlash Flood WarningILNButler3 hr
Dec 30, 1:08 PM ESTFlash Flood WarningILNButler4 hr
Dec 30, 2:53 PM ESTFlash Flood WarningILNClinton, Warren4 hr
Dec 30, 3:16 PM ESTFlash Flood WarningILNHighland4 hr
Dec 30, 4:08 PM ESTFlash Flood WarningILNChampaign, Clark, Logan, Miami, Shelby4 hr
Dec 30, 4:08 PM ESTFlash Flood WarningILNAllen, Auglaize, Hardin4 hr
Dec 30, 4:08 PM ESTFlash Flood WarningILNDarke, Mercer, Van Wert4 hr
Dec 30, 4:08 PM ESTFlash Flood WarningILNMontgomery, Preble4 hr
Dec 30, 4:08 PM ESTFlash Flood WarningILNGreene4 hr
Dec 30, 4:28 PM ESTFlash Flood WarningILNBrown3 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.