Alert archive / Kentucky / Flash Flood Warnings in 2011

Flash Flood Warning 32, NWS Jackson, KY

July 21, 2011Martin County, Kentucky

NWS Jackson, KY issued this flash flood warning at Jul 21, 2011, 5:56 AM EDT for Martin 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: Jul 21, 2011, 5:56 AM EDT (09:56 UTC)
Expired: Jul 21, 2011, 9:00 AM EDT
In force: 3 hr
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Flood severity: None

County Martin County, KY

The radar

The Jackson,KY radar (KJKL), 66 km from the middle of the area, began a volume at 09:57 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
Jul 21, 8:00 AM EDT	FLASH FLOOD	Davella, KY	QUICKLY RISING WATER SURROUNDING TRAILER.

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 00:00Z, 9.9 hours before the alert went out and 214 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3346 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

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

869 
WGUS53 KJKL 210956
FFWJKL
KYC159-211300-
/O.NEW.KJKL.FF.W.0032.110721T0956Z-110721T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON KY
556 AM EDT THU JUL 21 2011

THE NATIONAL WEATHER SERVICE IN JACKSON KY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN MARTIN COUNTY IN NORTHEAST KENTUCKY...

* UNTIL 900 AM EDT

* AT 556 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. FROM THIS...UP TO TWO INCHES OF RAIN HAS FALLEN WITH  
  ANOTHER INCH POSSIBLE THROUGH 7 AM EDT. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BRADBURY...DAVELLA...DAVISPORT...DEBORD...DELONG...PEVIER...
  PLEASANT...PREECE AND PRINCE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3772 8254 3770 8259 3771 8263 3772 8264
      3779 8267 3784 8261 3782 8250

$$

GREIF

2 follow-up statements

402 
WGUS73 KJKL 211122
FFSJKL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
722 AM EDT THU JUL 21 2011

KYC159-211300-
/O.CON.KJKL.FF.W.0032.000000T0000Z-110721T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARTIN KY-
722 AM EDT THU JUL 21 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHWESTERN MARTIN
COUNTY UNTIL 900 AM EDT...

AT 720 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL HAD MOVED ACROSS THE WARNED 
AREA. A LARGE AREA OF THREE INCH RAINFALL OCCURRED OVER A GOOD 
PORTION OF SOUTHWESTERN MARTIN COUNTY. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
BRADBURY...DAVELLA...DAVISPORT...DEBORD...DELONG...PEVIER...
PLEASANT...PREECE AND PRINCE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... 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 3772 8254 3770 8259 3771 8263 3772 8264
      3779 8267 3784 8261 3782 8250

$$

GREIF

767 
WGUS73 KJKL 211300
FFSJKL

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
900 AM EDT THU JUL 21 2011

KYC159-211314-
/O.EXP.KJKL.FF.W.0032.000000T0000Z-110721T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARTIN KY-
900 AM EDT THU JUL 21 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHWESTERN MARTIN
COUNTY WILL BE ALLOWED TO EXPIRE AT 900 AM EDT...

THIS FLASH FLOOD WARNING HAS BEEN REPLACED WITH A FLOOD WARNING FOR 
CENTRAL MARTIN COUNTY. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT 
IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3772 8254 3770 8259 3771 8263 3772 8264
      3779 8267 3784 8261 3782 8250

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 12:36 AM EDT	Severe Thunderstorm Warning	JKL	Elliott, Rowan	39 min
Jul 21, 12:50 AM EDT	Areal Flood Advisory	JKL	Rowan	3 hr
Jul 21, 4:06 AM EDT	Excessive Heat Warning	JKL	Bath, Bell, Breathitt, Clay, Elliott, Estill and 27 more	4 days
Jul 21, 5:42 AM EDT	Severe Thunderstorm Warning	JKL	Floyd, Johnson, Martin, Pike	48 min
Jul 21, 5:48 AM EDT	Areal Flood Advisory	JKL	Floyd, Johnson, Martin	5 hr
Jul 21, 6:23 AM EDT	Severe Thunderstorm Warning	JKL	Floyd, Johnson, Magoffin	52 min
Jul 21, 6:44 AM EDT	Areal Flood Advisory	JKL	Floyd	3 hr
Jul 21, 7:07 AM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Knott, Magoffin	38 min
Jul 21, 8:52 AM EDT	Flash Flood Warning	JKL	Clay, Leslie, Perry	3 hr
Jul 21, 8:58 AM EDT	Areal Flood Warning	JKL	Martin	3 hr
Jul 21, 9:19 AM EDT	Flash Flood Warning	JKL	Bell, Clay, Knox, Whitley	3 hr
Jul 21, 10:43 AM EDT	Flash Flood Warning	JKL	McCreary, Whitley	3 hr
Jul 21, 11:59 AM EDT	Areal Flood Warning	JKL	Martin	6 hr

Nearby

Flash Flood Warnings in Kentucky, 2011 Every 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.