Alert archive / Kentucky / Flash Flood Warnings in 2011

Flash Flood Warning 28, NWS Louisville, KY

April 24, 20114 counties in Kentucky

NWS Louisville, KY issued this flash flood warning at Apr 24, 2011, 3:56 PM CDT for 4 counties in Kentucky. It was in force for 9 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 24, 2011, 3:56 PM CDT (20:56 UTC)
Expired: Apr 25, 2011, 12:45 AM CDT
In force: 9 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Breckinridge County, KY, Grayson County, KY, Hancock County, KY, Ohio County, KY

The radar

The Louisville radar (KLVX), 75 km from the middle of the area, began a volume at 20:59 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 12:00Z, 8.9 hours before the alert went out and 166 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1536 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 557 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

673 
WGUS53 KLMK 242056
FFWLMK
KYC027-085-091-183-250545-
/O.NEW.KLMK.FF.W.0028.110424T2056Z-110425T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
356 PM CDT SUN APR 24 2011

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BRECKINRIDGE COUNTY IN NORTH CENTRAL KENTUCKY...
  HANCOCK COUNTY IN NORTHWEST KENTUCKY...
  OHIO COUNTY IN NORTHWEST KENTUCKY...
  GRAYSON COUNTY IN SOUTH CENTRAL KENTUCKY...

* UNTIL 1245 AM CDT

* AT 345 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  HEAVY RAIN MOVING INTO THE REGION FROM A CLUSTER OF THUNDERSTORMS  
  TO THE WEST.

* LOCATIONS IMPACTED INCLUDE...HARDINSBURG...HARTFORD...HAWESVILLE...
  LEITCHFIELD...

  IN ADDITION...BIG CLIFTY...LILAC AND DUFF ARE INCLUDED IN THIS
  FLASH FLOOD WARNING.

ADDITIONAL RAINFALL AMOUNTS OF AROUND 2 INCHES ARE ARE POSSIBLE IN 
THE WARNED AREA THIS EVENING...WITH LOCALLY HIGHER AMOUNTS. WATER 
RESCUES AND EVACUATIONS HAVE TAKEN PLACE IN EASTERN MISSOURI AND 
WESTERN KENTUCKY WITH THIS BATCH OF RAIN AND EXTREME CAUTION SHOULD 
BE USED. HANCOCK...BRECKINRIDGE AND GRAYSON COUNTIES ARE CONSIDERED 
HIGH FLASH FLOOD THREAT AREAS AND ARE PRONE TO MANY TROUBLE AREAS. 
IF YOU PLAN ON DRIVING THIS EVENING OR LIVE NEAR A BODY OF WATER USE 
EXTREME CAUTION!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

TO REPORT FLOODING TO THE NATIONAL WEATHER SERVICE...CALL TOLL FREE
AT...1...8 7 7...6 3 3...6 7 7 2...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3762 8698 3768 8682 3783 8684 3783 8691
      3793 8698 3800 8683 3784 8665 3793 8652
      3803 8650 3781 8617 3760 8628 3757 8612
      3740 8604 3733 8612 3732 8647 3741 8663
      3722 8692 3736 8704 3734 8712 3748 8713

$$

SCHOETTMER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 7:01 PM CDT	Special Weather Statement	LMK	Bourbon, Clark, Fayette, Jessamine, Nicholas	29 min
Apr 23, 7:18 PM CDT	River Flood Warning	LMK	Harrison	15 hr
Apr 23, 7:30 PM CDT	Special Weather Statement	LMK	Clark	15 min
Apr 23, 7:31 PM CDT	Severe Thunderstorm Warning	LMK	Clark	14 min
Apr 23, 8:20 PM CDT	Flash Flood Warning	LMK	Bourbon, Franklin, Harrison, Nicholas, Scott, Woodford	9 hr
Apr 23, 8:46 PM CDT	River Flood Warning	LMK	Bullitt	14 hr
Apr 24, 12:35 AM CDT	Special Weather Statement	LMK	Allen, Barren, Butler, Edmonson, Grayson, Green and 7 more	55 min
Apr 24, 1:12 AM CDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Monroe, Simpson	33 min
Apr 24, 1:22 AM CDT	Tornado Warning	LMK	Barren, Green, Hart, Metcalfe	23 min
Apr 24, 1:33 AM CDT	Special Weather Statement	LMK	Marion	27 min
Apr 24, 1:34 AM CDT	Tornado Warning	LMK	Barren, Metcalfe, Monroe	26 min
Apr 24, 1:37 AM CDT	Severe Thunderstorm Warning	LMK	Adair, Barren, Green, Metcalfe	38 min
Apr 24, 1:41 AM CDT	Tornado Warning	LMK	Adair, Casey, Green, Marion, Taylor	34 min
Apr 24, 1:56 AM CDT	Special Weather Statement	LMK	Marion, Mercer, Washington	34 min
Apr 24, 2:02 AM CDT	Severe Thunderstorm Warning	LMK	Boyle, Marion, Mercer, Washington	28 min
Apr 24, 2:10 AM CDT	Tornado Warning	LMK	Adair, Metcalfe, Russell	50 min
Apr 24, 2:13 AM CDT	Tornado Warning	LMK	Boyle, Casey, Lincoln, Marion, Taylor	47 min
Apr 24, 2:34 AM CDT	Special Weather Statement	LMK	Clark, Fayette, Garrard, Jessamine, Madison, Woodford	41 min
Apr 24, 2:37 AM CDT	Tornado Warning	LMK	Adair, Casey, Russell	23 min
Apr 24, 5:16 AM CDT	Areal Flood Warning	LMK	Breckinridge, Bullitt, Franklin, Hancock, Hardin, Harrison and 9 more	12 hr
Apr 24, 5:50 AM CDT	Special Weather Statement	LMK	Hancock, Ohio	25 min
Apr 24, 6:11 AM CDT	Special Weather Statement	LMK	Logan	34 min
Apr 24, 6:16 AM CDT	Special Weather Statement	LMK	Breckinridge, Butler, Grayson, Hancock	44 min
Apr 24, 6:44 AM CDT	Special Weather Statement	LMK	Butler, Edmonson, Logan, Warren	31 min
Apr 24, 6:59 AM CDT	Special Weather Statement	LMK	Bullitt, Hardin, Jefferson, Larue, Nelson, Oldham and 1 more	46 min
Apr 24, 7:10 AM CDT	Special Weather Statement	LMK	Barren, Edmonson, Hart, Metcalfe	35 min
Apr 24, 7:48 AM CDT	Special Weather Statement	LMK	Green, Taylor	27 min
Apr 24, 8:14 AM CDT	Special Weather Statement	LMK	Boyle, Casey	31 min
Apr 24, 8:38 AM CDT	Special Weather Statement	LMK	Boyle, Garrard	37 min
Apr 24, 9:06 AM CDT	Special Weather Statement	LMK	Madison	24 min
Apr 24, 12:58 PM CDT	Special Weather Statement	LMK	Allen	32 min
Apr 24, 1:42 PM CDT	Special Weather Statement	LMK	Monroe	33 min
Apr 24, 2:08 PM CDT	Severe Thunderstorm Warning	LMK	Clinton, Cumberland	37 min
Apr 24, 2:52 PM CDT	Special Weather Statement	LMK	Clinton	38 min
Apr 24, 3:54 PM CDT	Severe Thunderstorm Warning	LMK	Butler, Ohio	48 min
Apr 24, 4:19 PM CDT	Flash Flood Warning	LMK	Butler, Edmonson, Logan, Ohio, Simpson, Warren	9 hr
Apr 24, 4:28 PM CDT	Special Weather Statement	LMK	Butler, Edmonson, Grayson	62 min
Apr 24, 4:31 PM CDT	Severe Thunderstorm Warning	LMK	Logan	44 min
Apr 24, 4:47 PM CDT	Special Weather Statement	LMK	Butler	43 min
Apr 24, 4:48 PM CDT	Areal Flood Warning	LMK	Bullitt, Franklin, Harrison, Henry, Jefferson, Meade and 5 more	12 hr
Apr 24, 5:44 PM CDT	Special Weather Statement	LMK	Allen, Barren, Butler, Edmonson, Hart, Logan and 2 more	31 min
Apr 24, 6:03 PM CDT	Severe Thunderstorm Warning	LMK	Allen, Simpson, Warren	42 min
Apr 24, 6:17 PM CDT	Special Weather Statement	LMK	Green, Hart	43 min
Apr 24, 6:26 PM CDT	Special Weather Statement	LMK	Logan	34 min
Apr 24, 6:28 PM CDT	Severe Thunderstorm Warning	LMK	Barren	32 min
Apr 24, 6:32 PM CDT	Severe Thunderstorm Warning	LMK	Butler, Logan, Simpson, Warren	28 min
Apr 24, 6:36 PM CDT	Flash Flood Warning	LMK	Green, Hart, Larue, Marion, Nelson, Taylor and 1 more	6 hr
Apr 24, 6:48 PM CDT	Severe Thunderstorm Warning	LMK	Allen, Barren	27 min
Apr 24, 6:53 PM CDT	Areal Flood Advisory	LMK	Adair, Allen, Barren, Cumberland, Metcalfe, Monroe	6 hr
Apr 24, 6:58 PM CDT	Special Weather Statement	LMK	Warren	32 min

Nearby

Flash Flood Warnings in Kentucky, 2011 Every 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.