Alert archive / Kentucky / Flash Flood Warnings in 2011

Flash Flood Warning 39, NWS Paducah, KY

April 25, 20117 counties in Kentucky; Hardin County, Illinois

NWS Paducah, KY issued this flash flood warning at Apr 25, 2011, 11:03 PM CDT for 7 counties in Kentucky; Hardin County, Illinois. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 25, 2011, 11:03 PM CDT (04:03 UTC)
Expired
Apr 26, 2011, 3:37 AM CDT
In force
5 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

Counties Hardin County, IL, Calloway County, KY, Crittenden County, KY, Graves County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, Union County, KY

The radar

The Paducah radar (KPAH), 51 km from the middle of the area, began a volume at 04:05 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

Nashville Metro, TN (KBNA), launched 00:00Z, 4.1 hours before the alert went out and 192 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 2011-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 211 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2011-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
211 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
1752 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

508 
WGUS53 KPAH 260403
FFWPAH
ILC069-KYC035-055-083-139-143-157-225-261000-
/O.NEW.KPAH.FF.W.0039.110426T0403Z-110426T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
1103 PM CDT MON APR 25 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  UNION COUNTY IN NORTHWEST KENTUCKY...
  HARDIN COUNTY IN SOUTHERN ILLINOIS...
  CALLOWAY COUNTY IN WESTERN KENTUCKY...
  CRITTENDEN COUNTY IN WESTERN KENTUCKY...
  GRAVES COUNTY IN WESTERN KENTUCKY...
  LIVINGSTON COUNTY IN WESTERN KENTUCKY...
  LYON COUNTY IN WESTERN KENTUCKY...
  MARSHALL COUNTY IN WESTERN KENTUCKY...

* UNTIL 500 AM CDT TUESDAY.

* AT 1100 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
WIDESPREAD SHOWERS AND THUNDERSTORMS SPREADING SLOWLY EAST ACROSS 
EXTREME SOUTHEAST ILLINOIS AND FAR WEST KENTUCKY. THESE SHOWERS AND 
STORMS WILL GRADUALLY SPREAD INTO NORTHWEST KENTUCKY AND TOWARD THE 
LAND BETWEEN THE LAKES REGION.  THUNDERSTORMS WILL LIKELY PRODUCE 
ONE TO ONE AND A HALF INCHES OF RAINFALL IN AN HOUR...ESPECIALLY 
ALONG THE LEADING EDGE OF THE PRECIPITATION.  AFTER THE STRONGEST 
STORMS PASS...RAINFALL RATES OF ONE QUARTER TO ONE HALF OF AN INCH 
AN HOUR WILL STILL BE POSSIBLE MUCH OF THE NIGHT.

* LOCATIONS IN THE WARNING INCLUDE...
  ROSICLARE...MORGANFIELD...MARION...SMITHLAND...EDDYVILLE...        
  BENTON...MAYFIELD...AND MURRAY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. MOVE TO HIGHER GROUND.  DO NOT DRIVE AROUND ROAD BARRIERS.

&&

LAT...LON 3649 8881 3695 8882 3695 8849 3707 8856
      3715 8842 3730 8851 3742 8842 3761 8841
      3758 8815 3769 8814 3781 8804 3781 8791
      3789 8792 3765 8774 3746 8795 3737 8781
      3723 8809 3698 8789 3687 8817 3650 8804

$$
2 follow-up statements
609 
WGUS73 KPAH 260726
FFSPAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
226 AM CDT TUE APR 26 2011

ILC069-KYC035-055-083-139-143-157-225-261000-
/O.CON.KPAH.FF.W.0039.000000T0000Z-110426T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARDIN IL-UNION KY-CRITTENDEN KY-LIVINGSTON KY-LYON KY-MARSHALL KY-
GRAVES KY-CALLOWAY KY-
226 AM CDT TUE APR 26 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM CDT FOR
HARDIN COUNTY IN SOUTHERN ILLINOIS...AND UNION COUNTY IN NORTHWEST
KENTUCKY...AND CALLOWAY...GRAVES...MARSHALL...LYON...LIVINGSTON AND
CRITTENDEN COUNTIES IN WESTERN KENTUCKY...

AT 219 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
SHOWERS WERE TAPERING OFF ACROSS THE WARNED AREA.  ADDITIONAL 
RAINFALL AMOUNTS SHOULD BE AROUND A QUARTER INCH OR LESS...BUT 
RUNOFF FROM THE EARLIER HEAVIER RAINFALL MAY CAUSE OR FURTHER 
AGGRAVATE ANY FLASH FLOODING PROBLEMS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS 
SUBJECT TO FLOODING WHEN WATER BEGINS RISING. DO NOT DRIVE AROUND 
ROAD BARRIERS.

&&

LAT...LON 3649 8881 3695 8882 3695 8849 3707 8856
      3715 8842 3730 8851 3742 8842 3761 8841
      3758 8815 3769 8814 3781 8804 3781 8791
      3789 8792 3765 8774 3746 8795 3737 8781
      3723 8809 3698 8789 3687 8817 3650 8804

$$
149 
WGUS73 KPAH 260837
FFSPAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
337 AM CDT TUE APR 26 2011

ILC069-KYC035-055-083-139-143-157-225-260847-
/O.CAN.KPAH.FF.W.0039.000000T0000Z-110426T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARDIN IL-UNION KY-CRITTENDEN KY-LIVINGSTON KY-LYON KY-MARSHALL KY-
GRAVES KY-CALLOWAY KY-
337 AM CDT TUE APR 26 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR HARDIN COUNTY IN
SOUTHERN ILLINOIS...AND UNION COUNTY IN NORTHWEST KENTUCKY...AND
CALLOWAY...GRAVES...MARSHALL...LYON...LIVINGSTON AND CRITTENDEN
COUNTIES IN WESTERN KENTUCKY...

RAIN HAS ENDED ACROSS THE WARNED AREA FOR THE EARLY MORNING HOURS. 
THEREFORE...THE THREAT OF FLASH FLOODING FROM HEAVY RAIN HAS ENDED 
FOR AT LEAST THE NEXT SEVERAL HOURS.

LAT...LON 3649 8881 3695 8882 3695 8849 3707 8856
      3715 8842 3730 8851 3742 8842 3761 8841
      3758 8815 3769 8814 3781 8804 3781 8791
      3789 8792 3765 8774 3746 8795 3737 8781
      3723 8809 3698 8789 3687 8817 3650 8804

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 11:33 PM CDTSevere Thunderstorm WarningPAHFulton, Graves, Hickman42 min
Apr 25, 11:49 PM CDTSevere Thunderstorm WarningPAHGraves, Livingston, McCracken, Marshall26 min
Apr 26, 12:26 AM CDTSevere Thunderstorm WarningPAHCaldwell, Calloway, Christian, Livingston, Lyon, Marshall and 1 more49 min
Apr 26, 12:32 AM CDTFlash Flood WarningPAHCaldwell, Christian, Daviess, Henderson, Hopkins, McLean and 4 more3 hr
Apr 26, 12:54 AM CDTTornado WarningPAHCaldwell, Crittenden, Union, Webster36 min
Apr 26, 1:02 AM CDTSevere Thunderstorm WarningPAHCaldwell, Christian, Hopkins, Muhlenberg, Todd, Trigg43 min
Apr 26, 1:20 AM CDTSevere Thunderstorm WarningPAHDaviess, Henderson, Hopkins, McLean, Muhlenberg, Union and 1 more40 min
Apr 26, 1:49 AM CDTSevere Thunderstorm WarningPAHHenderson26 min
Apr 26, 3:20 PM CDTSevere Thunderstorm WarningPAHCalloway, Fulton, Graves, Hickman, Marshall25 min
Apr 26, 3:42 PM CDTTornado WarningPAHCalloway, Graves, Marshall, Trigg48 min
Apr 26, 3:47 PM CDTSevere Thunderstorm WarningPAHCaldwell, Christian, Hopkins, Livingston, Lyon, Marshall and 2 more43 min
Apr 26, 4:08 PM CDTTornado WarningPAHCaldwell, Crittenden, Livingston, Lyon37 min
Apr 26, 4:19 PM CDTSevere Thunderstorm WarningPAHFulton41 min
Apr 26, 4:26 PM CDTTornado WarningPAHCaldwell, Christian, Crittenden, Hopkins, Lyon, Muhlenberg and 1 more34 min
Apr 26, 4:33 PM CDTTornado WarningPAHCalloway, Trigg42 min
Apr 26, 4:50 PM CDTTornado WarningPAHFulton25 min
Apr 26, 4:52 PM CDTTornado WarningPAHDaviess, Hopkins, McLean, Webster38 min
Apr 26, 5:05 PM CDTTornado WarningPAHDaviess, Henderson, McLean24 min
Apr 26, 5:08 PM CDTTornado WarningPAHDaviess, Hopkins, McLean, Muhlenberg37 min
Apr 26, 5:10 PM CDTTornado WarningPAHFulton, Hickman35 min
Apr 26, 5:14 PM CDTTornado WarningPAHChristian, Trigg19 min
Apr 26, 5:38 PM CDTTornado WarningPAHBallard11 min
Apr 26, 5:40 PM CDTSevere Thunderstorm WarningPAHDaviess24 min
Apr 26, 5:47 PM CDTSevere Thunderstorm WarningPAHBallard15 min
Apr 26, 5:55 PM CDTSevere Thunderstorm WarningPAHGraves, Hickman35 min
Apr 26, 6:40 PM CDTTornado WarningPAHMarshall35 min
Apr 26, 6:43 PM CDTSevere Thunderstorm WarningPAHGraves32 min
Apr 26, 6:52 PM CDTSevere Thunderstorm WarningPAHGraves38 min
Apr 26, 6:56 PM CDTTornado WarningPAHCalloway, Lyon, Marshall, Trigg49 min
Apr 25, 7:23 PM CDTSevere Thunderstorm WarningPAHAlexander37 min
Apr 25, 7:45 PM CDTSevere Thunderstorm WarningPAHFranklin, Jackson, Jefferson, Perry, Saline, Williamson45 min
Apr 25, 10:00 PM CDTFlash Flood WarningPAHEdwards, Gallatin, Wabash, White6 hr

Nearby

Flash Flood Warnings in Kentucky, 2011Flash Flood Warnings in Illinois, 2011Every flash flood warning in 2011

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.