Alert archive / Kentucky / Flash Flood Warnings in 2012

Flash Flood Warning 31, NWS Jackson, KY

July 18, 20124 counties in Kentucky

NWS Jackson, KY issued this flash flood warning at Jul 18, 2012, 10:58 AM EDT for 4 counties in Kentucky. It was in force for 5 hr. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 18, 2012, 10:58 AM EDT (14:58 UTC)
Expired
Jul 18, 2012, 4:00 PM EDT
In force
5 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

Counties Knott County, KY, Leslie County, KY, Letcher County, KY, Perry County, KY

The radar

The Jackson,KY radar (KJKL), 61 km from the middle of the area, began a volume at 15:02 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.

What was reported inside it

TimeReportWhereRemark
Jul 18, 11:06 AM EDTFLASH FLOODBig Rock, KYSIX TO EIGHT INCHES OF FLOWING WATER OVER WOLF CREEK ROAD.
Jul 18, 11:30 AM EDTFLASH FLOOD1 Nnw Cornettsville, KYFORT BRANCH ROAD WASHED OUT AND UNDERCUT.
Jul 18, 11:50 AM EDTFLASH FLOODRedfox, KYA GROUP OF PEOPLE ARE STRANDED DUE TO HIGH WATER.
Jul 18, 12:51 PM EDTFLASH FLOODCarr Creek, KYHWY 160 CLOSED DUE TO HIGH WATER.
Jul 18, 1:00 PM EDTFLASH FLOODViper, KYHOMES ON RT. 1165 ARE FLOODED.
Jul 18, 1:30 PM EDTFLASH FLOODRedfox, KYEVACUATIONS STILL ONGOING IN REDFOX FROM PEOPLE TRAPPED IN HOMES AND CARS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 3.0 hours before the alert went out and 270 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 2012-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2497 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2012-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -23 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
2497 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1093 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
-5 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.

930 
WGUS53 KJKL 181458
FFWJKL
KYC119-131-133-193-182000-
/O.NEW.KJKL.FF.W.0031.120718T1458Z-120718T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON KY
1058 AM EDT WED JUL 18 2012

THE NATIONAL WEATHER SERVICE IN JACKSON KY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL LESLIE COUNTY IN SOUTHEAST KENTUCKY...
  SOUTH CENTRAL KNOTT COUNTY IN SOUTHEAST KENTUCKY...
  SOUTHEASTERN PERRY COUNTY IN SOUTHEAST KENTUCKY...
  WESTERN LETCHER COUNTY IN SOUTHEAST KENTUCKY...

* UNTIL 400 PM EDT

* AT 1057 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. DOPPLER ESTIMATES OF 3 TO 4 INCHES OF RAIN HAS FALLEN 
  IN THE PAST HOUR WITH ANOTHER 2 TO 3 INCHES LIKELY IN THE NEXT 
  COUPLE HOURS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  AMBURGEY...ANCO...ARMINTA...BANKS...BIG FORK...BIG ROCK...
  BLACKEY...BLUEFIELD...CARBON GLOW...CARCASSONNE...CARR CREEK...
  CAUSEY...CINDA...CODY...CORNETTSVILLE...CUTSHIN...DAISY...DALEY...
  DEFEATED CREEK...DELPHIA...DIRK...ELKO...FLINT...FREW...GANDER...
  HALLIE...HOT SPOT...INDIAN BOTTOM...JEFF AND JEREMIAH.

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.

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.

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

&&

LAT...LON 3715 8336 3728 8296 3704 8286 3700 8312
      3702 8315 3702 8318 3701 8319 3700 8323
      3698 8325 3696 8332

$$

DUSTY
1 follow-up statement
475 
WGUS73 KJKL 182002
FFSJKL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
402 PM EDT WED JUL 18 2012

KYC119-131-133-193-182009-
/O.EXP.KJKL.FF.W.0031.000000T0000Z-120718T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOTT KY-LESLIE KY-LETCHER KY-PERRY KY-
402 PM EDT WED JUL 18 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHEASTERN
PERRY...WESTERN LETCHER...EAST CENTRAL LESLIE AND SOUTH CENTRAL KNOTT
COUNTIES WILL BE ALLOWED TO EXPIRE AT 400 PM EDT...

THE THUNDERSTORMS WHICH BROUGHT EXCESSIVE RAINFALL HAVE DIMINISHED 
AND LEFT THE AREA...ALLOWING SMALL STREAMS TO BEGIN RECEDING. 
HOWEVER...OFFICIALS IN KNOTT COUNTY REPORTED THAT A SILT POND IN 
SOUTHWESTERN KNOTT COUNTY WAS IN DANGER OF FAILING. IF FAILURE 
OCCURS A FLASH FLOOD WARNING WOULD NEED TO BE REISSUED.

IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW 
ENFORCEMENT AGENCY.

LAT...LON 3715 8336 3728 8296 3704 8286 3700 8312
      3702 8315 3702 8318 3701 8319 3700 8323
      3698 8325 3696 8332

$$

HAL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 4:43 AM EDTAreal Flood AdvisoryJKLBreathitt, Clay, Owsley, Perry2 hr
Jul 18, 5:52 AM EDTAreal Flood AdvisoryJKLBreathitt59 min
Jul 18, 6:01 AM EDTAreal Flood AdvisoryJKLBell51 min
Jul 18, 8:54 AM EDTSevere Thunderstorm WarningJKLBath, Fleming51 min
Jul 18, 9:38 AM EDTFlash Flood WarningJKLFleming3 hr
Jul 18, 10:53 AM EDTFlash Flood WarningJKLMenifee, Morgan, Rowan2 hr
Jul 18, 10:56 AM EDTFlash Flood WarningJKLBath2 hr
Jul 18, 12:39 PM EDTSevere Thunderstorm WarningJKLMartin, Pike51 min
Jul 18, 1:15 PM EDTFlash Flood WarningJKLMartin, Pike95 min
Jul 18, 1:37 PM EDTFlash Flood WarningJKLPike3 hr
Jul 18, 1:40 PM EDTFlash Flood WarningJKLBell, Knox, McCreary, Whitley3 hr
Jul 18, 2:08 PM EDTSevere Thunderstorm WarningJKLKnox, Laurel, McCreary, Whitley52 min
Jul 18, 2:40 PM EDTSevere Thunderstorm WarningJKLMcCreary, Pulaski, Wayne35 min
Jul 18, 3:16 PM EDTSevere Thunderstorm WarningJKLMcCreary, Pulaski, Wayne22 min
Jul 18, 3:28 PM EDTSevere Thunderstorm WarningJKLMcCreary, Wayne32 min
Jul 18, 3:35 PM EDTFlash Flood WatchJKLBell, Breathitt, Clay, Floyd, Harlan, Johnson and 13 more52 hr
Jul 18, 6:20 PM EDTAreal Flood AdvisoryJKLBath, Fleming3 hr
Jul 18, 6:57 PM EDTAreal Flood AdvisoryJKLBath, Fleming, Rowan2 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.