Alert archive / Kentucky / Flash Flood Warnings in 2011

Flash Flood Warning 65, NWS Louisville, KY

August 18, 2011Henry County, Kentucky

NWS Louisville, KY issued this flash flood warning at Aug 18, 2011, 11:14 PM EDT for Henry County, Kentucky. It was in force for 104 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 18, 2011, 11:14 PM EDT (03:14 UTC)
Expired: Aug 19, 2011, 12:58 AM EDT
In force: 104 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

County Henry County, KY

The radar

The Louisville radar (KLVX), 101 km from the middle of the area, began a volume at 03:13 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, 3.2 hours before the alert went out and 149 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: 963 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1570 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

107 
WGUS53 KLMK 190314
FFWLMK
KYC103-190615-
/O.NEW.KLMK.FF.W.0065.110819T0314Z-110819T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
1114 PM EDT THU AUG 18 2011

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN HENRY COUNTY IN NORTH CENTRAL KENTUCKY...

* UNTIL 215 AM EDT

* AT 1109 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAINFALL FROM THUNDERSTORMS ALONG A LINE EXTENDING      
  FROM FRANKLINTON TO ORVILLE...MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE MAINLY RURAL AREAS OF EASTERN HENRY
  COUNTY...INCLUDING LOCKPORT...ORVILLE...FALLIS AND GEST.

ONE TO THREE INCHES OF RAIN HAVE ALREADY FALLEN ON EASTERN HENRY 
COUNTY THIS EVENING AND ANOTHER ONE TO TWO INCHES OF RAIN WILL BE 
POSSIBLE THROUGH 215 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.

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 3849 8498 3846 8494 3847 8492 3846 8490
      3844 8492 3842 8488 3838 8489 3836 8486
      3835 8489 3837 8491 3834 8501 3844 8510
      3852 8503 3851 8502 3852 8498

$$

13

2 follow-up statements

797 
WGUS73 KLMK 190414
FFSLMK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1214 AM EDT FRI AUG 19 2011

KYC103-190615-
/O.CON.KLMK.FF.W.0065.000000T0000Z-110819T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HENRY KY-
1214 AM EDT FRI AUG 19 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM EDT FOR
EASTERN HENRY COUNTY...

AT 1210 AM EDT...HEAVY RAIN HAD MOVED EAST OF HENRY COUNTY...BUT 
LIGHT TO MODERATE RAIN CONTINUED. LITTLE ADDITIONAL RAINFALL IS 
EXPECTED TONIGHT IF NO ADDITIONAL THUNDERSTORMS DEVELOP IN THE AREA. 
HOWEVER IT WILL TAKE SOME TIME FOR ANY FLOOD WATERS TO RECEDE.

SLABTOWN...LOCKPORT...FALLIS...AND ORVILLE ARE THE AREAS MOST 
IMPACTED BY THE HEAVY RAIN THAT FELL EARLIER.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
LOUISVILLE.

&&

LAT...LON 3849 8498 3846 8494 3847 8492 3846 8490
      3844 8492 3842 8488 3838 8489 3836 8486
      3835 8489 3837 8491 3834 8501 3844 8510
      3852 8503 3851 8502 3852 8498

$$

13

558 
WGUS73 KLMK 190458
FFSLMK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1258 AM EDT FRI AUG 19 2011

KYC103-190507-
/O.CAN.KLMK.FF.W.0065.000000T0000Z-110819T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HENRY KY-
1258 AM EDT FRI AUG 19 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EASTERN HENRY
COUNTY...

THE STORMS WITH HEAVY RAINFALL THAT PROMPTED THE WARNING HAVE MOVED 
OUT OF THE WARNED AREA.  ALTHOUGH ANY FLOOD WATERS SHOULD BE 
RECEDING...USE CAUTION DRIVING THIS MORNING ESPECIALLY SINCE 
FLOODING IS HARDER TO SPOT AT NIGHT.

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 3849 8498 3846 8494 3847 8492 3846 8490
      3844 8492 3842 8488 3838 8489 3836 8486
      3835 8489 3837 8491 3834 8501 3844 8510
      3852 8503 3851 8502 3852 8498

$$

AMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 8:01 PM EDT	Special Weather Statement	LMK	Grayson	29 min
Aug 18, 8:07 PM EDT	Special Weather Statement	LMK	Breckinridge	23 min
Aug 18, 8:09 PM EDT	Areal Flood Advisory	LMK	Grayson	111 min
Aug 18, 8:15 PM EDT	Special Weather Statement	LMK	Henry	30 min
Aug 18, 8:34 PM EDT	Special Weather Statement	LMK	Owen	26 min
Aug 18, 8:42 PM EDT	Severe Thunderstorm Warning	LMK	Franklin, Henry, Shelby	33 min
Aug 18, 9:18 PM EDT	Special Weather Statement	LMK	Anderson	27 min
Aug 18, 9:26 PM EDT	Special Weather Statement	LMK	Henry	34 min
Aug 18, 9:31 PM EDT	Areal Flood Advisory	LMK	Henry	119 min
Aug 18, 10:38 PM EDT	Special Weather Statement	LMK	Trimble	22 min
Aug 18, 11:00 PM EDT	Severe Thunderstorm Warning	LMK	Harrison	30 min
Aug 18, 11:16 PM EDT	Special Weather Statement	LMK	Bourbon	29 min
Aug 18, 11:22 PM EDT	Severe Thunderstorm Warning	LMK	Harrison	23 min
Aug 18, 11:24 PM EDT	Special Weather Statement	LMK	Franklin	36 min
Aug 18, 11:25 PM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Nicholas	37 min
Aug 18, 11:50 PM EDT	Special Weather Statement	LMK	Nicholas	25 min
Aug 19, 12:21 AM EDT	Special Weather Statement	LMK	Franklin	24 min
Aug 19, 1:00 AM EDT	Special Weather Statement	LMK	Madison	30 min
Aug 19, 1:40 PM EDT	Special Weather Statement	LMK	Green	35 min
Aug 19, 4:20 PM EDT	Special Weather Statement	LMK	Monroe	25 min
Aug 19, 4:48 PM EDT	Special Weather Statement	LMK	Cumberland	27 min
Aug 19, 5:06 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Clinton, Cumberland, Russell	24 min
Aug 19, 5:28 PM EDT	Severe Thunderstorm Warning	LMK	Clinton, Cumberland, Russell	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.