Alert archive / Kentucky / Flash Flood Warnings in 2009

Flash Flood Warning 20, NWS Paducah, KY

May 9, 2009Christian County, Todd County, Trigg County, Kentucky

NWS Paducah, KY issued this flash flood warning at May 9, 2009, 12:41 AM CDT for Christian County, Todd County, Trigg 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
May 9, 2009, 12:41 AM CDT (05:41 UTC)
Expired
May 9, 2009, 3:45 AM CDT
In force
3 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

Counties Christian County, KY, Todd County, KY, Trigg County, KY

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 5.7 hours before the alert went out and 114 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, Nashville Metro, TN at 00:00Z on 2009-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 755 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, Nashville Metro, TN at 00:00Z on 2009-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 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
755 J/kg
Mixed-layer CIN
-212 J/kg
Mixed-layer LCL
1403 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
487 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

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 8, 7:14 PM CDT, 5 hours 27 minutes earlier.

Area forecast discussion, May 8, 7:14 PM CDT, 5 hours 27 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
714 PM CDT FRI MAY 8 2009

.UPDATE...
REVISED AVIATION DISCUSSION FOR 00Z TAFS.

&&

.DISCUSSION... /ISSUED 334 PM CDT FRI MAY 8 2009/
WILL NEED TO BE BRIEF DUE TO ONGOING WEATHER TODAY. DERECHO/BOW
ECHO CONVECTIVE SYSTEM THIS MORNING EVOLVED INTO A CLOSED COMMA
HEAD ON ITS NORTH END EARLY THIS AFTERNOON...AND PRODUCED
WIDESPREAD WIND DAMAGE /POSSIBLE ISOLATED TORNADOES/ OVER A SWATH
OF SOUTHEAST MISSOURI AND SOUTHERN ILLINOIS. SYSTEM IS WEAKENING
LATE THIS AFTERNOON BUT STILL COULD PRODUCE SOME WIND DAMAGE AS IT
MOVES EAST ACROSS SW IN.

AREA OF SUBSIDENCE WILL FOLLOW THIS SYSTEM FOR AWHILE THIS
EVENING...WITH THE BEST CHC OF SCT SHOWERS DOWN CLOSE TO THE AR/TN
BORDERS. SFC COLD FRONT WILL EASE DOWN ACROSS THE REGION
TONIGHT...AND SHOULD BE SOUTH OF THE AR/TN BORDERS BY LATE TONIGHT.
THIS WILL LIKELY SET THE STAGE FOR A DRY WEEKEND AT MANY LOCATIONS.
THE ECMWF/GFS TRY TO BRING SOME LIGHT PRECIP UP INTO SOUTHERN
PORTIONS OF THE REGION AT TIMES OVER THE WEEKEND...BUT AM SKEPTICAL
OF PRECIPITATION SO FAR NORTH OF THE SURFACE BOUNDARY. DOES NOT LOOK
LIKE ANYTHING THAT WOULD CAUSE A MAJOR CHANGE IN WEEKEND PLANS.

DRY WEATHER IS STILL FORECAST FOR MOST OF THE AREA MONDAY AND
TUESDAY...AS H50 NW FLOW SHOVES HIGH PRESSURE/DRIER AIR SOUTHEAST
INTO THE GREAT LAKES.

&&

.AVIATION...
A FRONTAL BOUNDARY WILL PASS ACROSS THE REGION TONIGHT. A FEW
SHOWERS AND THUNDERSTORMS ARE STILL POSSIBLE THIS EVENING OVER
MAINLY WESTERN KENTUCKY...BUT MOST OF THE PRECIPITATION SHOULD
REMAIN SOUTH OF THE FORECAST TERMINALS. OTHERWISE...MAINLY VFR
CEILINGS AND VISIBILITIES WILL PREVAIL...WITH PATCHY MVFR CELINGS
POSSIBLE THIS EVENING. BY SATURDAY...THE FRONT WILL BE SOUTH OF THE
REGION...RESULTING IN PREVAILING NORTHWEST WINDS.

&&

.PAH WATCHES/WARNINGS/ADVISORIES...
KY...NONE.
MO...NONE.
IL...NONE.
IN...NONE.
&&

MEFFERT/PRESLEY
Hazardous weather outlook, May 8, 3:50 PM CDT, 8 hours 51 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
350 PM CDT FRI MAY 8 2009

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-092100-
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-
350 PM CDT FRI MAY 8 2009

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS ARE POSSIBLE EARLY THIS EVENING GENERALLY SOUTH OF A
LINE FROM NEW MADRID TO MURRAY KENTUCKY. SEVERE WEATHER IS NOT
EXPECTED AT THIS TIME.

MANY AREA RIVERS WILL CONTINUE TO EXPERIENCE MINOR TO MODERATE
FLOODING. PLEASE REFER TO THE LATEST FLOOD WARNINGS AND STATEMENTS
FOR DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A CHANCE OF THUNDERSTORMS IS FORECAST FOR TUESDAY NIGHT THROUGH
FRIDAY. AT THIS TIME...SEVERE WEATHER AND LOCALLY HEAVY RAINFALL
CANNOT BE RULED OUT DURING THIS PERIOD.

MANY AREA RIVERS WILL CONTINUE TO EXPERIENCE MINOR TO MODERATE
FLOODING. PLEASE REFER TO THE LATEST FLOOD WARNINGS AND
STATEMENTS FOR DETAILS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

JAP

In the hours before

Local storm report, May 8, 11:43 PM CDT, 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE
1143 PM CDT FRI MAY 08 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1131 PM     FLASH FLOOD      DONIPHAN                36.62N 90.82W
05/08/2009                   RIPLEY             MO   EMERGENCY MNGR

            REPORTS OF FLASH FLOODING IN DONIPHAN RESULTING IN
            EVACUATIONS OF PEOPLE RESIDING IN LOW LYING AREAS.

&&

JAYSONW
Local storm report, May 9, 12:08 AM CDT, 33 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 9:35 PM CDTRiver Flood WarningPAHLivingston9 days
May 8, 11:30 PM CDTFlash Flood WarningPAHCarlisle, Christian, Graves, Lyon, Marshall, Trigg3 hr
May 9, 2:28 AM CDTFlash Flood WarningPAHCalloway, Carlisle, Christian, Graves, Lyon, Marshall and 1 more6 hr
May 9, 3:44 AM CDTFlash Flood WarningPAHChristian, Todd, Trigg6 hr
May 9, 9:29 AM CDTRiver Flood WarningPAHMcLean, Webster6 days
May 9, 9:33 AM CDTRiver Flood WarningPAHCrittenden, Livingston9 days
May 9, 7:26 AM CDTRiver Flood WarningPAHGallatin, Wayne, White22 days
May 9, 9:24 AM CDTRiver Flood WarningPAHFranklin, Williamson15 days
May 8, 9:38 PM CDTSevere Thunderstorm WarningPAHButler, Ripley52 min
May 8, 10:39 PM CDTFlash Flood WarningPAHButler, Ripley3 hr

Nearby

Flash Flood Warnings in Kentucky, 2009Every flash flood warning in 2009

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.