Alert archive / Kentucky / Flash Flood Warnings in 2011

Flash Flood Warning 48, NWS Jackson, KY

August 13, 20114 counties in Kentucky

NWS Jackson, KY issued this flash flood warning at Aug 13, 2011, 7:41 PM EDT for 4 counties in Kentucky. It was in force for 4 hr. 1 report 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
Aug 13, 2011, 7:41 PM EDT (23:41 UTC)
Expired
Aug 14, 2011, 12:00 AM EDT
In force
4 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

Counties Jackson County, KY, Laurel County, KY, Owsley County, KY, Rockcastle County, KY

The radar

The Jackson,KY radar (KJKL), 58 km from the middle of the area, began a volume at 23:43 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
Aug 13, 8:26 PM EDTHEAVY RAIN 1.555 S Mckee, KYTHE JACKSON COUNTY MESONET SITE MEASURED 1.55 INCHES OF RAINFALL FROM 7PM UNTIL 755 PM EDT.

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, 11.7 hours before the alert went out and 223 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 2011-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 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, Cncnati-Daytn, OH at 12:00Z on 2011-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 square meters per square second.1939587897Sfc1 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
50 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
1366 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

847 
WGUS53 KJKL 132341
FFWJKL
KYC109-125-189-203-140400-
/O.NEW.KJKL.FF.W.0048.110813T2341Z-110814T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON KY
741 PM EDT SAT AUG 13 2011

THE NATIONAL WEATHER SERVICE IN JACKSON KY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN ROCKCASTLE COUNTY IN SOUTH CENTRAL KENTUCKY...
  JACKSON COUNTY IN SOUTHEAST KENTUCKY...
  NORTH CENTRAL LAUREL COUNTY IN SOUTH CENTRAL KENTUCKY...
  WESTERN OWSLEY COUNTY IN SOUTHEAST KENTUCKY...

* UNTIL MIDNIGHT EDT

* AT 739 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE 
  WARNED AREA. RADAR ESTIMATES OF OVER 2 INCHES OF RAIN HAS FALLEN 
  WITH ANOTHER ONE TO TWO INCHES POSSIBLE.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MCKEE...ALCORN...ANNVILLE...ARDERY...ARVEL...ATKINSTOWN...BLAKE...
  BOND...BRADSHAW...BRAZIL...CAMP WILDCAT...CARICO...CLOVER BOTTOM...
  COLLINGSWORTH...COOKSBURG...CORNELIUS...CRUISE...DABOLT...DANGO...
  DEESE...DILLON...DONARO...DUDLEY STATION...EBERLE...EGLON...
  EGYPT...ELIAN...ENDEE...FOXTOWN AND GAULEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE 
WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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 3753 8420 3757 8415 3757 8403 3758 8395
      3749 8383 3749 8375 3752 8372 3734 8372
      3735 8378 3733 8379 3733 8382 3731 8388
      3726 8390 3722 8431

$$

DUSTY
1 follow-up statement
163 
WGUS73 KJKL 140352
FFSJKL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
1152 PM EDT SAT AUG 13 2011

KYC109-125-189-203-140407-
/O.EXP.KJKL.FF.W.0048.000000T0000Z-110814T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON KY-OWSLEY KY-ROCKCASTLE KY-LAUREL KY-
1152 PM EDT SAT AUG 13 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTH CENTRAL
LAUREL...EASTERN ROCKCASTLE...WESTERN OWSLEY AND JACKSON COUNTIES
WILL BE ALLOWED TO EXPIRE AT MIDNIGHT 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 3753 8420 3757 8415 3757 8403 3758 8395
      3749 8383 3749 8375 3752 8372 3734 8372
      3735 8378 3733 8379 3733 8382 3731 8388
      3726 8390 3722 8431

$$

DUSTY

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 6:38 PM EDTSevere Thunderstorm WarningJKLBath, Fleming43 min

Nearby

Flash Flood Warnings in Kentucky, 2011Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.