Alert archive / Indiana / Flash Flood Warnings in 2011

Flash Flood Warning 34, NWS Louisville, KY

April 27, 20116 counties in Indiana; 5 counties in Kentucky

NWS Louisville, KY issued this flash flood warning at Apr 27, 2011, 1:34 AM EDT for 6 counties in Indiana; 5 counties in 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 outline as issued.

The facts

Issued: Apr 27, 2011, 1:34 AM EDT (05:34 UTC)
Expired: Apr 27, 2011, 4:30 AM EDT
In force: 3 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Clark County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Scott County, IN, Washington County, IN, Bullitt County, KY, Hardin County, KY, Jefferson County, KY, Oldham County, KY, Trimble County, KY

The radar

The Louisville radar (KLVX), 59 km from the middle of the area, began a volume at 05:36 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 00:00Z, 5.6 hours before the alert went out and 193 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: 781 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

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

858 
WGUS53 KLMK 270534
FFWLMK
INC019-043-061-077-143-175-KYC029-093-111-185-223-270830-
/O.NEW.KLMK.FF.W.0034.110427T0534Z-110427T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
134 AM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BULLITT COUNTY IN NORTH CENTRAL KENTUCKY...
  NORTHEASTERN HARDIN COUNTY IN NORTH CENTRAL KENTUCKY...
  JEFFERSON COUNTY IN NORTH CENTRAL KENTUCKY...
  THIS INCLUDES THE CITY OF LOUISVILLE...
  OLDHAM COUNTY IN NORTH CENTRAL KENTUCKY...
  TRIMBLE COUNTY IN NORTH CENTRAL KENTUCKY...
  CLARK COUNTY IN SOUTH CENTRAL INDIANA...
  FLOYD COUNTY IN SOUTH CENTRAL INDIANA...
  HARRISON COUNTY IN SOUTH CENTRAL INDIANA...
  JEFFERSON COUNTY IN SOUTH CENTRAL INDIANA...
  SCOTT COUNTY IN SOUTH CENTRAL INDIANA...
  WASHINGTON COUNTY IN SOUTH CENTRAL INDIANA...

* UNTIL 430 AM EDT

* AT 126 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN IN THUNDERSTORMS ALONG A LINE FROM 20 MILES        
  SOUTHWEST OF SEYMOUR TO 20 MILES WEST OF LOUISVILLE TO 45 MILES    
  SOUTHWEST OF LOUISVILLE...MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE... CORYDON... JEFFERSONVILLE... 
MADISON... NEW ALBANY... SALEM... LOUISVILLE... LAGRANGE... 
SCOTTSBURG...

RAINFALL RATES OF 1 TO 1.5 INCHES PER HOUR WILL BE POSSIBLE. A 
WIDESPREAD 1 TO 3 INCHES OF RAIN WILL BE POSSIBLE BY 430 AM EDT.

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 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.

&&

LAT...LON 3871 8520 3874 8532 3859 8521 3859 8518
      3847 8535 3831 8533 3830 8547 3826 8541
      3799 8550 3781 8575 3801 8599 3797 8606
      3807 8629 3823 8624 3873 8632 3879 8620
      3873 8587 3892 8555 3893 8521

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 11:35 PM EDT	Special Weather Statement	LMK	Clark	25 min
Apr 26, 11:39 PM EDT	Areal Flood Warning	LMK	Clark, Crawford, Dubois, Floyd, Harrison, Jefferson and 4 more	10 hr
Apr 27, 12:06 AM EDT	Severe Thunderstorm Warning	LMK	Clark, Scott	24 min
Apr 27, 12:24 AM EDT	Special Weather Statement	LMK	Crawford, Orange, Perry	36 min
Apr 27, 12:31 AM EDT	Special Weather Statement	LMK	Scott	29 min
Apr 27, 12:32 AM EDT	Flash Flood Warning	LMK	Crawford, Dubois, Orange, Perry	9 hr
Apr 27, 12:55 AM EDT	Special Weather Statement	LMK	Crawford, Floyd, Harrison, Orange	35 min
Apr 27, 4:15 AM EDT	Special Weather Statement	LMK	Crawford, Floyd, Harrison, Orange, Washington	60 min
Apr 27, 4:24 AM EDT	Flash Flood Warning	LMK	Clark, Floyd, Harrison, Jefferson, Scott, Washington	5 hr
Apr 27, 5:50 AM EDT	Special Weather Statement	LMK	Jefferson	25 min
Apr 27, 7:56 AM EDT	River Flood Warning	LMK	Jefferson, Scott	24 hr
Apr 27, 7:56 AM EDT	River Flood Warning	LMK	Harrison, Washington	16 hr
Apr 27, 9:23 AM EDT	Areal Flood Warning	LMK	Clark, Crawford, Dubois, Floyd, Harrison, Jefferson and 4 more	12 hr
Apr 26, 8:08 PM EDT	Tornado Warning	LMK	Breckinridge, Grayson, Hardin	22 min
Apr 26, 8:27 PM EDT	Tornado Warning	LMK	Grayson, Hardin	33 min
Apr 26, 8:48 PM EDT	Tornado Warning	LMK	Hardin, Larue, Nelson	27 min
Apr 26, 9:16 PM EDT	Tornado Warning	LMK	Hardin, Larue, Nelson	29 min
Apr 26, 9:46 PM EDT	Special Weather Statement	LMK	Nelson	29 min
Apr 26, 10:20 PM EDT	Severe Thunderstorm Warning	LMK	Nelson, Spencer	14 min
Apr 26, 10:23 PM EDT	Special Weather Statement	LMK	Ohio	37 min
Apr 26, 10:32 PM EDT	Tornado Warning	LMK	Anderson, Nelson, Spencer, Washington	28 min
Apr 26, 10:56 PM EDT	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Shelby, Spencer	34 min
Apr 26, 10:56 PM EDT	Tornado Warning	LMK	Ohio	34 min
Apr 26, 11:20 PM EDT	Severe Thunderstorm Warning	LMK	Shelby, Spencer	40 min
Apr 26, 11:23 PM EDT	Special Weather Statement	LMK	Ohio	37 min
Apr 26, 11:25 PM EDT	Special Weather Statement	LMK	Franklin	35 min
Apr 26, 11:31 PM EDT	Severe Thunderstorm Warning	LMK	Ohio	29 min
Apr 26, 11:44 PM EDT	Special Weather Statement	LMK	Grayson	31 min
Apr 26, 11:47 PM EDT	Special Weather Statement	LMK	Ohio	28 min
Apr 26, 11:49 PM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Edmonson, Grayson	26 min
Apr 26, 11:54 PM EDT	Special Weather Statement	LMK	Hancock	36 min
Apr 26, 11:59 PM EDT	Special Weather Statement	LMK	Shelby	31 min
Apr 27, 12:02 AM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hancock, Ohio	28 min
Apr 27, 12:13 AM EDT	Flash Flood Warning	LMK	Hancock, Ohio	9 hr
Apr 27, 12:13 AM EDT	Special Weather Statement	LMK	Ohio	32 min
Apr 27, 12:17 AM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Grayson	28 min
Apr 27, 12:23 AM EDT	Severe Thunderstorm Warning	LMK	Henry	37 min
Apr 27, 12:41 AM EDT	Severe Thunderstorm Warning	LMK	Butler, Logan	34 min
Apr 27, 1:06 AM EDT	Special Weather Statement	LMK	Logan	24 min
Apr 27, 1:15 AM EDT	Severe Thunderstorm Warning	LMK	Butler, Logan	30 min
Apr 27, 1:25 AM EDT	Special Weather Statement	LMK	Jefferson	35 min
Apr 27, 1:38 AM EDT	Flash Flood Warning	LMK	Butler, Edmonson, Logan, Simpson, Warren	3 hr
Apr 27, 1:41 AM EDT	Special Weather Statement	LMK	Butler, Grayson, Logan	34 min
Apr 27, 1:58 AM EDT	Special Weather Statement	LMK	Edmonson, Warren	32 min
Apr 27, 2:23 AM EDT	Severe Thunderstorm Warning	LMK	Edmonson, Grayson, Hardin	22 min
Apr 27, 2:43 AM EDT	Special Weather Statement	LMK	Hardin	32 min
Apr 27, 2:49 AM EDT	Severe Thunderstorm Warning	LMK	Butler, Logan, Ohio	41 min
Apr 27, 3:07 AM EDT	Special Weather Statement	LMK	Grayson, Warren	23 min
Apr 27, 3:20 AM EDT	Special Weather Statement	LMK	Logan	25 min
Apr 27, 3:35 AM EDT	Special Weather Statement	LMK	Butler, Hancock, Ohio	25 min
Apr 27, 4:27 AM EDT	Flash Flood Warning	LMK	Butler, Edmonson, Logan, Simpson, Warren	5 hr
Apr 27, 5:45 AM EDT	Special Weather Statement	LMK	Oldham, Shelby, Spencer, Trimble	45 min
Apr 27, 6:06 AM EDT	Tornado Warning	LMK	Henry, Oldham, Shelby, Trimble	24 min
Apr 27, 6:12 AM EDT	Special Weather Statement	LMK	Simpson, Warren	33 min
Apr 27, 6:27 AM EDT	Special Weather Statement	LMK	Allen	33 min
Apr 27, 6:37 AM EDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Edmonson, Hart, Warren	23 min
Apr 27, 7:00 AM EDT	Severe Thunderstorm Warning	LMK	Barren, Green, Hart	30 min
Apr 27, 7:19 AM EDT	Special Weather Statement	LMK	Nelson, Shelby, Spencer	26 min
Apr 27, 7:32 AM EDT	Special Weather Statement	LMK	Monroe	28 min
Apr 27, 7:44 AM EDT	Severe Thunderstorm Warning	LMK	Adair, Cumberland, Green, Metcalfe, Monroe, Russell	31 min
Apr 27, 7:48 AM EDT	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Henry, Shelby	27 min
Apr 27, 7:52 AM EDT	Severe Thunderstorm Warning	LMK	Cumberland, Monroe	30 min
Apr 27, 7:53 AM EDT	Severe Thunderstorm Warning	LMK	Anderson, Mercer, Washington	22 min
Apr 27, 7:56 AM EDT	Tornado Warning	LMK	Franklin, Henry, Shelby	19 min
Apr 27, 8:08 AM EDT	Severe Thunderstorm Warning	LMK	Clinton, Cumberland, Russell	37 min
Apr 27, 8:11 AM EDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Cumberland, Metcalfe, Russell, Taylor	34 min
Apr 27, 8:12 AM EDT	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Harrison, Scott, Woodford	33 min
Apr 27, 8:24 AM EDT	Tornado Warning	LMK	Anderson, Boyle, Fayette, Jessamine, Mercer, Woodford	36 min
Apr 27, 8:31 AM EDT	Tornado Warning	LMK	Clinton	14 min
Apr 27, 8:33 AM EDT	Severe Thunderstorm Warning	LMK	Russell	12 min
Apr 27, 8:40 AM EDT	Tornado Warning	LMK	Adair, Casey, Russell	35 min
Apr 27, 8:45 AM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Harrison, Scott	30 min
Apr 27, 8:51 AM EDT	Tornado Warning	LMK	Casey, Garrard, Lincoln	24 min
Apr 27, 8:52 AM EDT	Tornado Warning	LMK	Bourbon, Fayette, Harrison, Scott, Woodford	23 min
Apr 27, 9:02 AM EDT	Severe Thunderstorm Warning	LMK	Garrard, Lincoln	28 min
Apr 27, 9:12 AM EDT	Tornado Warning	LMK	Clark, Fayette, Garrard, Jessamine, Lincoln, Madison	33 min
Apr 27, 9:15 AM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Harrison, Nicholas	30 min
Apr 27, 9:21 AM EDT	Severe Thunderstorm Warning	LMK	Garrard, Lincoln, Madison	24 min
Apr 27, 9:40 AM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Clark, Fayette, Madison, Nicholas	35 min
Apr 27, 11:19 AM EDT	River Flood Warning	LMK	Warren	36 hr

Nearby

Flash Flood Warnings in Indiana, 2011 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.