Alert archive / Kentucky / Flash Flood Warnings in 2012

Flash Flood Warning 14, NWS Jackson, KY

April 3, 2012Harlan County, Kentucky

NWS Jackson, KY issued this flash flood warning at Apr 3, 2012, 4:43 PM EDT for Harlan 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
Apr 3, 2012, 4:43 PM EDT (20:43 UTC)
Expired
Apr 3, 2012, 7:30 PM EDT
In force
3 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

County Harlan County, KY

The radar

The Knoxville radar (KMRX), 66 km from the middle of the area, began a volume at 20:46 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 12:00Z, 8.7 hours before the alert went out and 302 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, Cncnati-Daytn, OH at 12:00Z on 2012-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Cncnati-Daytn, OH at 12:00Z on 2012-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1598 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

329 
WGUS53 KJKL 032043
FFWJKL
KYC095-032330-
/O.NEW.KJKL.FF.W.0014.120403T2043Z-120403T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON KY
443 PM EDT TUE APR 3 2012

THE NATIONAL WEATHER SERVICE IN JACKSON KY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL HARLAN COUNTY IN SOUTHEAST KENTUCKY...

* UNTIL 730 PM EDT

* AT 442 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS CONTAINING VERY HEAVY RAINFALL MOVING REPEATEDLY     
  ACROSS THE SAME LOCATIONS. EXCESSIVE RUNOFF WILL CAUSE FLASH
  FLOODING OF SMALL STREAMS AND CREEKS. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...HARLAN...
  AGES...BARDO...BLACK MOUNTAIN...BOBS CREEK...BROOKSIDE...
  CHEVROLET...COBURN...COLTS...COXTON...CRANKS...CRUMMIES...
  DARKMONT...DIZNEY...DRESSEN...ELCOMB...EVARTS...FARMERS MILL...
  FLAGLER...GRAYS KNOB...HENSLEY STORE...KENTENIA...KENVIR...
  KILDAV...LENARVE...LIGGETT...LOW...MARTINS FORK...MARTINS FORK LAKE
  AND MARY ALICE.

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...WALLINS 
CREEK...CRUMMIES CREEK...TOMS BRANCH...PUCKETT CREEK...BROWNIES 
CREEK...AGES CREEK...BAILEY CREEK...TERRY FORK...BANNER 
FORK...CUMBERLAND RIVER...GABES BRANCH...JONES CREEK...YOCUM 
CREEK...BRITTON CREEK...CATRON CREEK...LITTLE CREEK...SLATERS 
FORK...MARTINS FORK CUMBERLAND RIVER...TURTLE CREEK...LONG 
BRANCH...CRANKS CREEK AND MILL CREEK.

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.

&&

LAT...LON 3667 8343 3683 8340 3688 8314 3682 8309
      3678 8313 3675 8312 3674 8314 3674 8319
      3670 8335 3667 8341

$$

GEOGERIAN
2 follow-up statements
889 
WGUS73 KJKL 032125
FFSJKL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
525 PM EDT TUE APR 3 2012

KYC095-032330-
/O.CON.KJKL.FF.W.0014.000000T0000Z-120403T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARLAN KY-
525 PM EDT TUE APR 3 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL HARLAN
COUNTY UNTIL 730 PM EDT...

AT 523 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING BACK IN OVER THE AREA. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING 
INCLUDE...HARLAN...AGES...BOBS CREEK...CHEVROLET...COBURN...CRANKS...
CRUMMIES...MARY ALICE AND MARY HELEN.

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
WALLINS CREEK...CRUMMIES CREEK...TOMS BRANCH...PUCKETT CREEK...AGES 
CREEK...TERRY FORK...BANNER FORK...JONES CREEK...YOCUM CREEK...
BRITTON CREEK...CATRON CREEK...LITTLE CREEK...SLATERS FORK...
TURTLE CREEK...LONG BRANCH...CRANKS CREEK AND MILL CREEK.

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.

&&

LAT...LON 3667 8343 3683 8340 3688 8314 3682 8309
      3678 8313 3675 8312 3674 8314 3674 8319
      3670 8335 3667 8341

$$

GEOGERIAN
159 
WGUS73 KJKL 032322
FFSJKL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
722 PM EDT TUE APR 3 2012

KYC095-032337-
/O.EXP.KJKL.FF.W.0014.000000T0000Z-120403T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARLAN KY-
722 PM EDT TUE APR 3 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTH CENTRAL
HARLAN COUNTY WILL BE ALLOWED TO EXPIRE AT 730 PM EDT...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3667 8343 3683 8340 3688 8314 3682 8309
      3678 8313 3675 8312 3674 8314 3674 8319
      3670 8335 3667 8341

$$

GEOGERIAN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 1:45 PM EDTSevere Thunderstorm WarningJKLBreathitt, Owsley45 min
Apr 3, 3:06 PM EDTSevere Thunderstorm WarningJKLClay, Jackson, Owsley39 min
Apr 3, 3:12 PM EDTSevere Thunderstorm WarningJKLBell, Knox, Whitley48 min
Apr 3, 3:53 PM EDTSevere Thunderstorm WarningJKLHarlan, Leslie, Letcher, Pike37 min
Apr 3, 4:16 PM EDTSevere Thunderstorm WarningJKLClay, Knox, Laurel44 min
Apr 3, 4:19 PM EDTSevere Thunderstorm WarningJKLClay, Knox, Laurel41 min
Apr 3, 4:23 PM EDTAreal Flood AdvisoryJKLLetcher2 hr
Apr 3, 4:37 PM EDTFlash Flood WarningJKLLetcher3 hr
Apr 3, 4:46 PM EDTSevere Thunderstorm WarningJKLClay, Knox, Laurel11 min
Apr 3, 4:49 PM EDTSevere Thunderstorm WarningJKLClay, Laurel31 min
Apr 3, 5:25 PM EDTSevere Thunderstorm WarningJKLFloyd35 min
Apr 3, 6:21 PM EDTFlash Flood WarningJKLJohnson, Magoffin3 hr
Apr 3, 6:33 PM EDTAreal Flood AdvisoryJKLFloyd, Johnson, Magoffin3 hr
Apr 3, 7:15 PM EDTAreal Flood AdvisoryJKLKnox, Laurel, Whitley2 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.