Alert archive / Kentucky / Flash Flood Warnings in 2010

Flash Flood Warning 10, NWS Paducah, KY

May 3, 2010Livingston County, Lyon County, Marshall County, Kentucky

NWS Paducah, KY issued this flash flood warning at May 3, 2010, 7:56 PM CDT for Livingston County, Lyon County, Marshall County, Kentucky. It was in force for 106 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 3, 2010, 7:56 PM CDT (00:56 UTC)
Expired
May 3, 2010, 9:42 PM CDT
In force
106 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
Unknown

Counties Livingston County, KY, Lyon County, KY, Marshall County, KY

The radar

The Paducah radar (KPAH), 46 km from the middle of the area, began a volume at 00:58 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

Lincoln, IL (KILX), launched 00:00Z, 0.9 hours before the alert went out and 347 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, Lincoln, IL at 00:00Z on 2010-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 214 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lincoln, IL at 00:00Z on 2010-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.1939587897117136156Sfc1 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
214 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1616 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

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 Paducah, KY wrote its last area forecast discussion before this flash flood warning went out at May 3, 12:42 PM CDT, 7 hours 14 minutes earlier.

Area forecast discussion, May 3, 12:42 PM CDT, 7 hours 14 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
1242 PM CDT MON MAY 3 2010

.DISCUSSION...
NEW SWODY1 PAINTS SLGT RISK ACROSS NORTHERN COUNTIES...IE NORTH OF
OH RIVER...ALONG ADVANCING FRONTAL BOUNDARY. LOOKING UPSTREAM VIS
IMAGERY DOES REVEAL DISTURBED CU DECK NE MO/NW IL...AND AS TEMPS
HEAT UP SURFACE BASED CAPES MODELLED INTO LOWER 1KS J/KG. RUC13
AND NAM BOTH FLIRT WITH NRN ZONES AFT 21Z WITH OVERNIGHT POPS
RANGING PERHAPS AS HIGH AS HIGH CHC NE TO LOW/NO CHANCE
SOUTH OR SOUTHWEST. GIVEN H5 TEMPS AND LAPSE RATES SWODY1 TEXT
SUGGESTS HAIL AS MAIN THREAT IF IT OCCURS.

MODELS DO SEEM TO DAMPEN CONVECTION AS IT GETS GOING/APPROACHES
FA...SO IT WILL BE A WAIT-NE-SEE ON DEVELOPMENT. WILL GO AHEAD AND
PAINT THE TAPERING OF POPS FROM HI CHC TO LOW CHC NE TO SW AND
BLEND TO THE COLLAB PIC. AFTER TONIGHT...WE SHOULD SEE SOME
WARMING/DRYING. HOWEVER ANOTHER WEAK FRONTAL BOUNDARY SKIRTS
ACROSS THE LOWER OH VALLEY AND INTRODUCES A SLGT CHC MENTIONABLE
POP IN OUR NE FOR WED PM/EVENING. OTHER THAN THAT...WE LOOK GOOD
AND DRY THRU FRI...WHEN THE NEXT SUCH FRONT COMES THRU. IT LOOKS
TO COOL US OFF OVER THE WEEKEND INTO EARLY NEXT WEEK AFTER ITS
WEEK END FROPA POPS.

BLENDED RUC TO GFS FOR LONGER TERM FORECAST PIC. BLENDED MAV/MET
MOS WITH HPC GUID AND COLLAB PIC FOR TEMPS.

&&

.AVIATION...
MAINLY VFR CONDITIONS ARE EXPECTED TO PERSIST THROUGH TUESDAY WITH
THE ONLY CONCERN BEING A WEAK COLD FRONT APPROACHING FROM NRN IL/MO.
FRONT WILL NOT APPROACH NWRN PORTIONS OF THE CWA UNTIL AFTER 22Z
WITH TIMING OF FROPA AT TAF SITES GENERALLY BETWEEN 04Z AND 07Z.
ISOLATED TSTMS WILL LIKELY POP UP AHEAD OF THE FRONT LATER THIS
AFTERNOON BUT ACTIVITY WILL NOT HIT EVERY LOCATION AND WILL TEND TO
WEAKEN AS IT HEADS FURTHER SE AND AFTER SUNSET/LOSS OF INSTABILITY.
WORST CASE WOULD BE A BRIEF PERIOD OF LOW VFR CIGS AND LOW MVFR/IFR
VIS WITH A TSTM. WINDS COULD ALSO GUST OVER 20KTS WITH ANY TSTM.

&&

.PAH WATCHES/WARNINGS/ADVISORIES...
KY...NONE.
MO...NONE.
IL...NONE.
IN...NONE.
&&
Hazardous weather outlook, May 3, 1:49 PM CDT, 6 hours 7 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
149 PM CDT MON MAY 3 2010

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-041000-
JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON-
WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-JOHNSON-POPE-
HARDIN-ALEXANDER-PULASKI-MASSAC-GIBSON-PIKE-POSEY-VANDERBURGH-
WARRICK-SPENCER-FULTON-HICKMAN-CARLISLE-BALLARD-MCCRACKEN-GRAVES-
LIVINGSTON-MARSHALL-CALLOWAY-CRITTENDEN-LYON-TRIGG-CALDWELL-
UNION KY-WEBSTER-HOPKINS-CHRISTIAN-HENDERSON-DAVIESS-MCLEAN-
MUHLENBERG-TODD-PERRY MO-BOLLINGER-CAPE GIRARDEAU-WAYNE MO-CARTER-
RIPLEY-BUTLER-STODDARD-SCOTT-MISSISSIPPI-NEW MADRID-
149 PM CDT MON MAY 3 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN
ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY...AND SOUTHEAST
MISSOURI.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 PM ALONG AND
NORTH OF A PERRYVILLE MISSOURI TO CARMI ILLINOIS LINE. REFER TO
THE WATCH FOR MORE DETAILS.

SIGNIFICANT RESIDUAL FLOODING WILL CONTINUE OVER PORTIONS OF THE
THE PURCHASE AREA AND SOUTHERN PENNYRILE REGION OF WESTERN
KENTUCKY. PLEASE REFER TO THE FLOOD WARNINGS AND STATEMENTS
FOR DETAILS.

RIVER FLOODING CONTINUES ON AREA RIVERS...REFER TO THE LATEST
RIVER FLOOD WARNINGS AND STATEMENTS FOR ADDITIONAL DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

RIVER FLOODING WILL CONTINUE ON AREA RIVERS. PLEASE REFER TO THE
LATEST RIVER FORECASTS...WARNINGS...AND STATEMENTS FOR ADDITIONAL
DETAILS REGARDING THE RIVER FLOODING.

THERE WILL BE A CHANCE OF THUNDERSTORMS WEDNESDAY AFTERNOON AND
EVENING...AND AGAIN THURSDAY NIGHT THROUGH FRIDAY NIGHT. SEVERE
WEATHER CANNOT BE RULED OUT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION FOR SEVERE THUNDERSTORM WATCH 137 THIS AFTERNOON
AND EVENING IS REQUESTED.

In the hours before

Special weather statement, May 3, 5:58 PM CDT, 1 hour 58 minutes before
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The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 8:17 PM CDTFlash Flood WarningPAHCrittenden, Livingston, Lyon6 hr
May 4, 2:15 AM CDTFlash Flood WarningPAHCrittenden, Livingston, Lyon6 hr
May 4, 8:15 AM CDTAreal Flood WarningPAHCrittenden, Livingston, Lyon54 hr
May 4, 2:28 PM CDTRiver Flood WarningPAHDaviess, Henderson6 days
May 4, 2:28 PM CDTRiver Flood WarningPAHHenderson, Union7 days
May 4, 2:28 PM CDTRiver Flood WarningPAHUnion7 days
May 4, 2:28 PM CDTRiver Flood WarningPAHCrittenden, Union8 days
May 3, 7:29 PM CDTSevere Thunderstorm WarningPAHFranklin31 min
May 3, 7:49 PM CDTSevere Thunderstorm WarningPAHUnion26 min

Nearby

Flash Flood Warnings in Kentucky, 2010Every flash flood warning in 2010

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.