Alert archive / Kentucky / Flash Flood Warnings in 1996

Flash Flood Warning 22, NWS Wilmington, OH

April 29, 1996Grant County, Pendleton County, Kentucky

NWS Wilmington, OH issued this flash flood warning at Apr 29, 1996, 3:56 PM EDT for Grant County, Pendleton County, Kentucky. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 29, 1996, 3:56 PM EDT (19:56 UTC)
Expired
Apr 29, 1996, 7:00 PM EDT
In force
3 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

Counties Grant County, KY, Pendleton County, KY

The radar

The Cincinnati radar (KILN), 101 km from the middle of the area, began a volume at 19:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.9 hours before the alert went out and 103 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, Cncnati-Daytn, OH at 12:00Z on 1996-04-29Temperature 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, Cncnati-Daytn, OH at 12:00Z on 1996-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -276 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
497 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
-276 m²/s²
0-3 km storm-relative helicity
-76 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 KILN 291955
FFWILN
OHC061-KYC037-081-117-191-292300-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
356 PM EDT MON APR 29 1996
 
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  700 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST OHIO
 
   ...HAMILTON COUNTY
 
IN NORTHERN KENTUCKY
 
   ...CAMPBELL COUNTY...GRANT COUNTY...KENTON COUNTY
   ...PENDLETON COUNTY
 
AT 355 PM THE WILMINGTON DOPPLER RADAR CONTINUED TO SHOW A LINE OF
THUNDERSTORMS THAT WERE PRODUCING HEAVY RAINS MOVING THROUGH NORTHERN
KENTUCKY. THE STORMS ARE CAPABLE OF PRODUCING UP TO AN INCH OF RAINFALL
IN LESS THAN A HALF AN HOUR.
 
THE MAIN LINE OF THUNDERSTORMS WILL CROSS INTERSTATE 75 AROUND 415 PM.
THE STORMS CAN PRODUCE FLASH FLOODING BECAUSE THE GROUND IS ALREADY
SATURATED IN THESE AREAS...AND THE INTENSITY OF THE RAINFALL WILL BE SO
GREAT. THE STORMS WILL PASS THROUGH DOWNTOWN CINCINNATI BY 430 PM.
 
NEVER DRIVE YOUR CAR INTO A FLOODED ROADWAY. YOU CAN EASILY
BECOME STRANDED OR TRAPPED. THE DEPTH OF WATER IS NOT ALWAYS
OBVIOUS. IF YOU ARE UNSURE ABOUT THE ROAD CONDITION OR THE WATER
LEVEL AHEAD OF YOU...TURN AR:OUND AND TAKE ANOTHER ROUTE.
 
DANGELO

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.

NWS Wilmington, OH wrote its last area forecast discussion before this flash flood warning went out at Apr 29, 1:55 PM EDT, 2 hours 1 minute earlier.

Area forecast discussion, Apr 29, 1:55 PM EDT, 2 hours 1 minute before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
155 PM EDT MON APR 29 1996

TRW'S DEVELOPING ACROSS WRN KY AND SRN IN THIS AFTERNOON AND EXPECTED
TO MOVE INTO WRN OH BY LATE THIS AFTERNOON.  WITH SUN...AREA IS MORE
UNSTABLE THAN MODELS DEPICT.  LOOP FROM KLVX INDICATES STORMS MOVING
MORE NORTH THAN EAST.  MODELS INDICATE UPPER TROF TO DEEPEN WHICH WL
MAKE UPPER WINDS BECOME MORE SOUTHERLY AND RAIN MOVE OVER SAME AREAS
LATE THIS AFTERNOON AND TONIGHT.  THUS THINK THAT WITH COUNTY FLOOD
GUIDANCE IN THE .50 INCHES/HOUR AND CURRENT FLOODING PROBLEMS FLOOD
WATCH SHOULD C0NTINUED PER COOORDINATION WITH CLE.

CONDITIONS TO BE BECOME STABLE BY 12Z TUE SO CHC RW ONLY LOOKS GOOD FOR
TUE AND TUE NIGHT.   TEMPS NEARLY STEADY ON TUE WITH CAA AND CLOSE TO
MOS ALL PERIODS.

SVR TSTM WATCH BOX JUST ISSUED FOR SERN IND...NRN KY...AND SWRN OH.

CVG 48/54/40/60
DAY 47/51/39/59
CMH 50/55/37/57

WILKINSON

In the hours before

Special weather statement, Apr 29, 2:47 PM EDT, 1 hour 9 minutes before
...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL OF SOUTHEASTERN INDIANA
MOST OF SOUTHWESTERN OHIO...AND PARTS OF NORTHERN KENTUCKY...

AN AREA OF STRONG TO SEVERE THUNDERSTORMS WAS DEVELOPING ACROSS CENTRAL
AND EASTERN INDIANA AND NORTHERN KENTUCKY THIS AFTERNOON.  THIS AREA IS
EXPECTED TO MOVE INTO SOUTHWESTERN OHIO AND NORTHERN KENTUCKY AFTER 300
PM EDT (200 PM EDT).  GUSTY WINDS...LARGE HAIL...TORRENTIAL DOWNPOURS
...AND FREQUENT LIGHTNING ARE POSSIBdLE WITH THESE STORMS.

RESIDENTS OF THESE AREAS SHOULD KEEP AN EYE TO THE WESTERN SKY AS THESE
STORMS MAY APPROACH RAPIDLY.  STAY TUNED TO NOAA WEATHER RADIO FOR
FURTHER UPDATES.

WILKINSON
Special weather statement, Apr 29, 2:59 PM EDT, 57 minutes before
OHZ060>063-070>072-077>080-KYZ089>099-INZ050-058-059-066-073>075-
080-300000-
SPECIAL WEATHER STATEMENT...RETRANSMITTED
NATIONAL WEATHER SERVICE WILMINGTON OH
258 PM EDT (158 PM EST) MON APR 29 1996

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL OF SOUTHEASTERN INDIANA
...MOST OF SOUTHWESTERN OHIO...AND PARTS OF NORTHERN KENTUCKY...

AN AREA OF STRONG TO SEVERE THUNDERSTORMS WAS DEVELOPING ACROSS CENTRAL
AND EASTERN INDIANA AND NORTH-CENTRAL KENTUCKY THIS AFTERNOON.  THIS
AREA IS EXPECTED TO MOVE INTO SOUTHWESTERN OHIO AND NORTHERN KENTUCKY
AFTER 315 PM EDT (215 PM EST).  GUSTY WINDS...LARGE HAIL...TORRENTIAL
DOWNPOURS...AND FREQUENT LIGHTNING ARE POSSIBLE WITH THESE STORMS.

RESIDENTS OF THESE AREAS SHOULD KEEP AN EYE TO THE WESTERN SKY AS THESE
STORMS MAY APPROACH RAPIDLY.  STAY TUNED TO NOAA WEATHER RADIO FOR
FURTHER UPDATES.

WILKINSON

...RETRANSMITTED WITH PROPER HEADING...

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 4:55 AM EDTFlash Flood WarningILNBoone, Campbell, Kenton6 hr
Apr 29, 5:33 AM EDTFlash Flood WarningILNCarroll, Gallatin5 hr
Apr 29, 3:46 PM EDTFlash Flood WarningILNBoone, Gallatin, Owen3 hr
Apr 29, 3:46 PM EDTSevere Thunderstorm WarningILNBoone, Gallatin3 hr
Apr 29, 3:46 PM EDTSevere Thunderstorm WarningILNOwen3 hr
Apr 29, 3:56 PM EDTFlash Flood WarningILNCampbell, Kenton3 hr
Apr 29, 4:11 PM EDTSevere Thunderstorm WarningILNCampbell, Kenton49 min
Apr 29, 6:48 PM EDTSevere Thunderstorm WarningILNPendleton27 min

Nearby

Flash Flood Warnings in Kentucky, 1996Every flash flood warning in 1996

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; radar from the NEXRAD Level II archive.