Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 140, NWS Charleston, WV

December 30, 1990Delaware County, Marion County, Union County, Ohio

NWS Charleston, WV issued this flash flood warning at Dec 30, 1990, 10:41 AM EST for Delaware County, Marion County, Union County, Ohio. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Dec 30, 1990, 10:41 AM EST (15:41 UTC)
Expired
Dec 30, 1990, 1:45 PM EST
In force
3 hr
Issued by
NWS Charleston, WV
Area
Whole counties

Counties Delaware County, OH, Marion County, OH, Union 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 12:00Z, 3.7 hours before the alert went out and 102 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 12:00Z 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 12:00Z on 1990-12-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 square meters per square second.19395878Sfc1 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
535 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
337 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 KCMH 301541
FFWCMH
OHC041-045-101-159-119-301845-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM FLOOD WARNING
NATIONAL WEATHER SERVICE COLUMBUS OH
1041 AM EST SUN DEC 30 1990
 
THE NATIONAL WEATHER SERVICE IN COLUMBUS HAS ISSUED A
SMALL STREAM FLOOD WARNING EFFECTIVE UNTIL  145 PM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN CENTRAL OHIO
          ...DELAWARE...FAIRFIELD...MARION...UNION
IN SOUTHEAST OHIO
          ...MUSKINGUM
 
AT 1035 AM NATIONAL WEATHER SERVICE RADAR INDICATED A LARGE AREA OF
RAIN OVER MOST OF OHIO. HEAVIER RAIN WAS OCCURRING IN
MARION...UNION...DELAWARE...MUSKINGUM...AND FAIRFIELD COUNTIES. MORE
RAIN...HEAVY AT TIMES...WILL MOVE INTO THESE COUNTIES LATE THIS
MORNING INTO EARLY THIS AFTERNOON. NUMEROUS ROAD FLOODING REPORTS HAVE
ALREADY BEEN REPORTED FROM THESE COUNTIES. ADDITIONAL FLOODING WILL
OCCUR.
 
 
 
 
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.
 
GROH

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 30, 3:08 AM ESTFlash Flood WarningRLXDelaware, Marion, Union4 hr
Dec 30, 6:20 AM ESTFlash Flood WarningRLXMadison3 hr
Dec 30, 7:21 AM ESTFlash Flood WarningRLXDelaware, Marion, Union3 hr
Dec 30, 8:27 AM ESTFlash Flood WarningRLXFranklin, Licking, Pickaway3 hr
Dec 30, 9:22 AM ESTFlash Flood WarningRLXFayette, Madison3 hr
Dec 30, 10:41 AM ESTFlash Flood WarningRLXMuskingum3 hr
Dec 30, 10:41 AM ESTFlash Flood WarningRLXFairfield3 hr
Dec 30, 11:34 AM ESTFlash Flood WarningRLXFranklin, Licking, Pickaway3 hr
Dec 30, 11:34 AM ESTFlash Flood WarningRLXRoss3 hr
Dec 30, 11:34 AM ESTFlash Flood WarningRLXPerry3 hr
Dec 30, 12:27 PM ESTFlash Flood WarningRLXAthens, Hocking, Vinton3 hr
Dec 30, 12:27 PM ESTFlash Flood WarningRLXMorgan3 hr
Dec 30, 12:40 PM ESTFlash Flood WarningRLXFayette2 hr
Dec 30, 1:45 PM ESTFlash Flood WarningRLXFayette, Madison, Pickaway, Ross4 hr
Dec 30, 1:45 PM ESTFlash Flood WarningRLXDelaware, Marion, Union4 hr
Dec 30, 1:45 PM ESTFlash Flood WarningRLXFairfield, Licking, Muskingum, Perry4 hr
Dec 30, 1:45 PM ESTFlash Flood WarningRLXFranklin4 hr
Dec 30, 3:31 PM ESTFlash Flood WarningRLXAthens, Hocking, Vinton4 hr
Dec 30, 3:31 PM ESTFlash Flood WarningRLXMorgan4 hr
Dec 30, 5:45 PM ESTFlash Flood WarningRLXFayette, Franklin, Madison, Pickaway, Union12 hr
Dec 30, 5:45 PM ESTFlash Flood WarningRLXDelaware, Marion12 hr
Dec 30, 5:45 PM ESTFlash Flood WarningRLXLicking, Muskingum, Perry12 hr
Dec 30, 5:45 PM ESTFlash Flood WarningRLXRoss12 hr
Dec 30, 5:45 PM ESTFlash Flood WarningRLXFairfield12 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.