Alert archive / Kentucky / Flash Flood Warnings in 2012

Flash Flood Warning 41, NWS Jackson, KY

August 5, 2012Knox County, Laurel County, Whitley County, Kentucky

NWS Jackson, KY issued this flash flood warning at Aug 5, 2012, 2:55 PM EDT for Knox County, Laurel County, Whitley 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 outline as issued.

The facts

Issued
Aug 5, 2012, 2:55 PM EDT (18:55 UTC)
Expired
Aug 5, 2012, 6:00 PM EDT
In force
3 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

Counties Knox County, KY, Laurel County, KY, Whitley County, KY

The radar

The Knoxville radar (KMRX), 99 km from the middle of the area, began a volume at 18:58 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, 6.9 hours before the alert went out and 240 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 12:00Z on 2012-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1769 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 12:00Z on 2012-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.1939Sfc1 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
1769 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
739 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.6

Open this sounding in Storm Lab

The text

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

541 
WGUS53 KJKL 051855
FFWJKL
KYC121-125-235-052200-
/O.NEW.KJKL.FF.W.0041.120805T1855Z-120805T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON KY
255 PM EDT SUN AUG 5 2012

THE NATIONAL WEATHER SERVICE IN JACKSON KY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN WHITLEY COUNTY IN SOUTH CENTRAL KENTUCKY...
  SOUTH CENTRAL LAUREL COUNTY IN SOUTH CENTRAL KENTUCKY...
  WESTERN KNOX COUNTY IN SOUTHEAST KENTUCKY...

* UNTIL 600 PM EDT

* AT 252 PM EDT...TRAINED WEATHER SPOTTERS REPORTED SLOW MOVING      
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA HAS  
  LED TO MANY CREEKS AND STREAMS IN THE AREA RUNNING AT BANKFUL. IN  
  ADDITION 4 TO 6 ONCHES OF WATER WAS FLOWING ACROSS HIGHWAY 26 IN   
  THE WOODBINE AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...     
  WILLIAMSBURG...BIRDSEYE...BRYANTS STORE...CORBIN...FABER...        
  GOLDBUG...GRAY...KEAVY...LIBERTY...LYNN CAMP...MOORE HILL AND      
  WOODBINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 3698 8395 3673 8391 3671 8405 3674 8431
      3698 8428 3702 8412

$$

GREIF
2 follow-up statements
020 
WGUS73 KJKL 052022
FFSJKL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
422 PM EDT SUN AUG 5 2012

KYC121-125-235-052200-
/O.CON.KJKL.FF.W.0041.000000T0000Z-120805T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX KY-WHITLEY KY-LAUREL KY-
422 PM EDT SUN AUG 5 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL LAUREL...
NORTHERN WHITLEY AND WESTERN KNOX COUNTIES UNTIL 600 PM EDT...

AT 415 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT FLASH
FLOODING WAS OCCURRING IN THE CITY OF CORBIN AND ON EATONTOWN ROAD
IN NORTHERN WHITLEY COUNTY. WHILE ADDITIONAL RAINFALL AMOUNTS 
THROUGH 6 PM WILL REMAIN LESS THAN A HALF INCH...IT WILL TAKE SOME 
TIME FOR FLOOD WATERS TO RECEDE.

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.

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN JACKSON KY.

&&

LAT...LON 3698 8395 3673 8391 3671 8405 3674 8431
      3698 8428 3702 8412

$$

ABE
016 
WGUS73 KJKL 052200
FFSJKL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
600 PM EDT SUN AUG 5 2012

KYC121-125-235-052213-
/O.EXP.KJKL.FF.W.0041.000000T0000Z-120805T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX KY-WHITLEY KY-LAUREL KY-
600 PM EDT SUN AUG 5 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTH CENTRAL
LAUREL...NORTHERN WHITLEY AND WESTERN KNOX COUNTIES WILL BE ALLOWED
TO EXPIRE AT 600 PM EDT...

SOME ROADS REMAIN IMPACTED BY HIGH WATER AND AN AERIAL FLOOD WARNING
HAS BEEN ISSUED FOR EXTREME WEST CENTRAL KNOX COUNTY...NORTH CENTRAL 
WHITLEY COUNTY...AND SOUTH CENTRAL LAUREL COUNTY. FLASH FLOODING IS
NO LONGER OCCURRING OR EXPECTED.

LAT...LON 3698 8395 3673 8391 3671 8405 3674 8431
      3698 8428 3702 8412

$$

ABE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 12:53 PM EDTAreal Flood AdvisoryJKLPulaski, Rockcastle3 hr
Aug 5, 2:06 PM EDTAreal Flood AdvisoryJKLKnox, Laurel, McCreary, Pulaski, Whitley4 hr
Aug 5, 3:00 PM EDTAreal Flood AdvisoryJKLMcCreary, Wayne3 hr
Aug 5, 3:36 PM EDTAreal Flood AdvisoryJKLBell, Clay, Harlan, Knox, Leslie, Whitley4 hr
Aug 5, 5:57 PM EDTAreal Flood WarningJKLKnox, Laurel, Whitley3 hr

Nearby

Flash Flood Warnings in Kentucky, 2012Every flash flood warning in 2012

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.