Alert archive / Kentucky / Flash Flood Warnings in 2012
Flash Flood Warning 45, NWS Jackson, KY
NWS Jackson, KY issued this flash flood warning at Aug 7, 2012, 9:07 AM EDT for Knox County, Whitley County, Kentucky. It was in force for 3 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 7, 2012, 9:07 AM EDT (13:07 UTC)
- Expired
- Aug 7, 2012, 12:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Jackson, KY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Knox County, KY, Whitley County, KY
The radar
The Knoxville radar (KMRX), 87 km from the middle of the area, began a volume at 13:09 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 7, 9:20 AM EDT | FLASH FLOOD | Perkins, KY | FLASH FLOODING OCCURRED ON WHETSTONE CREEK AND MAPLE CREEK WITH WATER UP OVER THE ROADS AND APPROACHING HOUSES ALONG THE CREEKS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 1.1 hours before the alert went out and 241 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.
- Mixed-layer CAPE
- 2562 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 725 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
803 WGUS53 KJKL 071307 FFWJKL KYC121-235-071600- /O.NEW.KJKL.FF.W.0045.120807T1307Z-120807T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE JACKSON KY 907 AM EDT TUE AUG 7 2012 THE NATIONAL WEATHER SERVICE IN JACKSON KY HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL WHITLEY COUNTY IN SOUTH CENTRAL KENTUCKY... SOUTHWESTERN KNOX COUNTY IN SOUTHEAST KENTUCKY... * UNTIL NOON EDT * AT 905 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. BETWEEN TWO AND THREE INCHES OF RAIN HAS FALLEN IN THE WARNED AREA WITH UP TO ANOTHER TWO INCHES POSSIBLE THROUGH LATE MORNING. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CARPENTER...CLATE...GAUSDALE...JULIP...LOUDEN...LUCKY...PERKINS... PERMON...SUTTONS MILL...VERNE AND YADEN. 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 3681 8395 3668 8396 3671 8413 3684 8412 $$ GREIF
2 follow-up statements
549 WGUS73 KJKL 071424 FFSJKL FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE JACKSON KY 1024 AM EDT TUE AUG 7 2012 KYC121-235-071600- /O.CON.KJKL.FF.W.0045.000000T0000Z-120807T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KNOX KY-WHITLEY KY- 1024 AM EDT TUE AUG 7 2012 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EAST CENTRAL WHITLEY AND SOUTHWESTERN KNOX COUNTIES UNTIL NOON EDT... AT 1023 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL HAD MOVED ACROSS THE WARNED AREA. THESE DROPPED BETWEEN TWO AND THREE INCHES OF RAIN OVER AN AREA THAT SAW EXCESSIVE RAIN DURING THE PAST COUPLE OF DAYS. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE... CARPENTER...CLATE...GAUSDALE...JULIP...LOUDEN...LUCKY...PERKINS...PER MON AND VERNE. THIS ALSO INCLUDES REESE CREEK. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE ALSO SUBJECT TO FLOODING. && LAT...LON 3682 8406 3681 8395 3670 8396 3670 8409 $$ GREIF
229 WGUS73 KJKL 071556 FFSJKL FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE JACKSON KY 1156 AM EDT TUE AUG 7 2012 KYC121-235-071611- /O.EXP.KJKL.FF.W.0045.000000T0000Z-120807T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KNOX KY-WHITLEY KY- 1156 AM EDT TUE AUG 7 2012 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EAST CENTRAL WHITLEY AND SOUTHWESTERN KNOX COUNTIES WILL BE ALLOWED TO EXPIRE AT NOON 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 3682 8406 3681 8395 3670 8396 3670 8409 $$ GREIF
The office that day
Everything else NWS Jackson, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 8:51 AM EDT | Areal Flood Advisory | JKL | Knox, Whitley | 3 hr |
| Aug 7, 9:22 AM EDT | Areal Flood Advisory | JKL | Knott, Leslie, Letcher, Perry | 3 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.