Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 134, NWS Charleston, WV

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

NWS Charleston, WV issued this flash flood warning at Dec 30, 1990, 3:08 AM EST for Delaware County, Marion County, Union County, Ohio. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Dec 30, 1990, 3:08 AM EST (08:08 UTC)
Expired
Dec 30, 1990, 7:15 AM EST
In force
4 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 00:00Z, 8.1 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 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 KCMH 300817 COR
FFWCMH
OHC041-101-159-301215-

BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE COLUMBUS OH
308 AM EST SUN DEC 30 1990

THE NATIONAL WEATHER SERVICE IN COLUMBUS HAS ISSUED A
SMALL STREAM FLOOD WARNING EFFECTIVE UNTIL  715 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...

IN CENTRAL OHIO
          ...DELAWARE...MARION...UNION

AT 255 AM THE MARION COUNTY SHERIFF REPORTED SMALL STREAMS ARE OUT OF
THEIR BANKS IN LARUE...AND THAT MANY ROADS IN THE COUNTY ARE FLOODED.
AT 305 AM NATIONAL WEATHER SERVICE RADAR INDICATED THAT RAIN...SOME OF
IT HEAVY...CONTINUED OVER MARION...UNION...AND DELAWARE COUNTIES AND
MORE WAS DEVELOPING TO THE WEST AND SOUTHWEST. HEAVY RAIN HAS OCCURRED
OVER THESE COUNTIES SINCE MIDNIGHT AND ADDITIONAL RAINFALL WILL CAUSE
FLOODING.


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.

GERARD
$$
...CORRECTED TYPE OF WARNING IN FIRST PARAGRAPH...

The office that day

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

IssuedProductOfficeCountiesLasted
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 WarningRLXDelaware, Marion, Union3 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.