Alert archive / Kentucky / Flash Flood Warnings in 1991

Flash Flood Warning 13, NWS Wilmington, OH

December 2, 1991Mason County, Kentucky

NWS Wilmington, OH issued this flash flood warning at Dec 2, 1991, 9:20 PM EST for Mason County, Kentucky. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Dec 2, 1991, 9:20 PM EST (02:20 UTC)
Expired
Dec 3, 1991, 12:15 AM EST
In force
3 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

County Mason County, KY

The nearest sounding before it

Huntington/Tri S, WV (KHTS), launched 00:00Z, 2.3 hours before the alert went out and 118 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, Huntington/Tri S, WV at 00:00Z on 1991-12-03Temperature 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, Huntington/Tri S, WV at 00:00Z on 1991-12-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 483 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
525 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
483 m²/s²
0-3 km storm-relative helicity
804 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 KCVG 030220 RRA
FFWCVG
KYC161-030515-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CINCINNATI OH
920 PM EST MON DEC 2 1991
 
THE NATIONAL WEATHER SERVICE IN CINCINNATI HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1215 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTH KENTUCKY
          ...MASON
 
AT 915 PM EST THE MASON COUNTY SHERIFF REPORTED WATER OVER
BRIDGES AND SEVERAL REPORTS OF WATER OVER ROADWAYS. OVER THREE
INCHES OF RAIN HAS FALLEN IN MASON COUNTY SINCE THIS MORNING.
RADAR SHOWED A LARGE AREA OF RAIN OVER EASTERN KENTUCKY WHICH
WILL LIKELY MAKE THE FLOODING WORSE.
 
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.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
JN

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 2, 5:54 PM EST, 3 hours 26 minutes before
OHZ008-INZ013-KYZ005-022355-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CINCINNATI OH
553 PM EST MON DEC 02 1991

AT 530 THIS EVENING NATIONAL WEATHER SERVICE RADAR WAS INDICATING
A LARGE AREA OF RAIN OVER ALL OF SOUTHEAST INDIANA...SOUTHWEST OHIO
AND NORTHERN AND CENTRAL KENTUCKY.

THE RAIN EXTENDED FROM VAN WERT OHIO...120 MILES NORTH OF CINCINNATI
SOUTH TO LEXINGTON KENTUCKY. THE HEAVIEST RAINS WERE INDICATED FROM
CINCINNATI SOUTH TO LAWRENCEBURG KENTUCKY. A FEW THUNDERSTORMS WITH
VERY HEAVY RAIN WERE 20 MILES WEST OF LEXINGTON NEAR THE TOWNS OF
FRANKFORT AND LAWRENCEBURG.

INTENSITIES HAVE INCREASED SINCE 430 PM AND AREAL COVERAGE REMAINED
UNCHANGED.  THE RAINS WERE MOVING TO THE NORTHEAST AT 30 MILES AN HOUR.

WITH THE HEAVY RAIN...UNDERPASSES AND POORLY DRAINED STREETS MAY
EXPERIENCE PONDING OF WATER. MOTORISTS ARE URGED TO SLOW DOWN AS HEAVY
DOWNPOURS QUICKLY REDUCE VISIBILITIES. ALWAYS REMEMBER TO NEVER
DRIVE THROUGH AREAS WHERE WATER COVERS THE ROADWAY...IT MAY BE
DEEPER THAN YOU THINK.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES ON THIS RAIN
SITUATION.

KEENEY

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 3, 12:02 AM ESTFlash Flood WarningILNMason2 hr

Nearby

Flash Flood Warnings in Kentucky, 1991Every flash flood warning in 1991

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.