Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 55, NWS Wilmington, OH

December 29, 1990Darke County, Ohio

NWS Wilmington, OH issued this flash flood warning at Dec 29, 1990, 9:36 PM EST for Darke County, Ohio. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Dec 29, 1990, 9:36 PM EST (02:36 UTC)
Expired
Dec 30, 1990, 12:45 AM EST
In force
3 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

County Darke 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, 2.6 hours before the alert went out and 44 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 300238
FFWDAY
OHC037-300545-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SMALL STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE DAYTON OH
936 PM EST SAT DEC 29 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SMALL STREAM
FLOOD WARNING EFFECTIVE UNTIL 1245 AM EST FOR PEOPLE IN
THE FOLLOWING COUNTY

   IN THE STATE OF OHIO
      DARKE

AT 930 PM EST THE DARKE COUNTY SHERIFF DEPARTMENT REPORTED THAT
GREENVILLE CREEK AT GREENVILLE WAS NEARLY OUT OF IT BANKS.
SEVERAL ROADWAYS HAVE ALREADY BEEN CLOSED BY STANDING AND PONDING
WATER.

THE RAIN IS EXPECTED TO CONTINUE ACROSS THE AREA AND SOME IT MAY
BE HEAVY AT TIMES. WITH THE GROUND ALREADY SATURATED THIS
ADDITIONAL RAIN WILL MAKE FLOODING LIKELY.

DO NOT DRIV{E 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.

TORRENCE

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 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 WarningILNAuglaize, Darke, Mercer, Van Wert3 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.