Alert archive / Kentucky / Flash Flood Warnings in 2011

Flash Flood Warning 10, NWS Charleston, WV

May 11, 2011Carter County, Greenup County, Lawrence County, Kentucky

NWS Charleston, WV issued this flash flood warning at May 11, 2011, 2:50 AM EDT for Carter County, Greenup County, Lawrence County, Kentucky. It was in force for 2 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: May 11, 2011, 2:50 AM EDT (06:50 UTC)
Expired: May 11, 2011, 5:09 AM EDT
In force: 2 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

Counties Carter County, KY, Greenup County, KY, Lawrence County, KY

The radar

The Jackson,KY radar (KJKL), 76 km from the middle of the area, began a volume at 06:52 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 00:00Z, 6.8 hours before the alert went out and 150 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: 1068 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 2337 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

391 
WGUS51 KRLX 110650
FFWRLX
KYC043-089-127-110945-
/O.NEW.KRLX.FF.W.0010.110511T0650Z-110511T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
250 AM EDT WED MAY 11 2011

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CARTER COUNTY IN KENTUCKY...
  THIS INCLUDES THE CITIES OF...OLIVE HILL...GRAYSON LAKE STATE
  PARK...GRAYSON...CARTER CAVES STATE PARK...
  SOUTHWESTERN GREENUP COUNTY IN KENTUCKY...
  LAWRENCE COUNTY IN KENTUCKY...
  THIS INCLUDES THE CITY OF BLAINE...

* UNTIL 545 AM EDT

* AT 239 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM TRAINING THUNDERSTORMS OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LOAD AND
  GESLING

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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. MOVE TO HIGHER GROUND.

&&

PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3833 8328 3824 8321 3826 8316 3818 8306
      3819 8302 3817 8292 3811 8290 3800 8303
      3796 8300 3799 8293 3788 8261 3795 8256
      3795 8249 3837 8295 3858 8293 3863 8307
      3856 8310 3850 8319 3842 8324 3834 8324

$$

26

1 follow-up statement

433 
WGUS71 KRLX 110909
FFSRLX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
509 AM EDT WED MAY 11 2011

KYC043-089-127-110918-
/O.CAN.KRLX.FF.W.0010.000000T0000Z-110511T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAWRENCE KY-CARTER KY-GREENUP KY-
509 AM EDT WED MAY 11 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN
GREENUP...CARTER AND LAWRENCE COUNTIES IN KENTUCKY...

AREA CREEK AND STREAM LEVELS WILL REMAIN ELEVATED. A FEW ADDITIONAL 
SHOWERS AND THUNDERSTORMS REMAIN POSSIBLE THIS MORNING.

TURN AROUND DON'T DROWN. DO NOT DRIVE YOUR CAR ON FLOODED ROADWAYS.

PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE 877-633-6772 WHEN YOU CAN DO SO SAFELY.

LAT...LON 3833 8328 3824 8321 3826 8316 3818 8306
      3819 8302 3817 8292 3811 8290 3800 8303
      3796 8300 3799 8293 3788 8261 3795 8256
      3795 8249 3837 8295 3858 8293 3863 8307
      3856 8310 3850 8319 3842 8324 3834 8324

$$

26

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 10, 8:05 PM EDT	Tornado Warning	RLX	Lawrence	25 min
May 10, 8:52 PM EDT	Special Weather Statement	RLX	Lawrence	3 hr
May 10, 11:35 PM EDT	Special Weather Statement	RLX	Greenup	55 min
May 11, 12:08 AM EDT	Severe Thunderstorm Warning	RLX	Boyd, Greenup	67 min
May 11, 1:01 AM EDT	Severe Thunderstorm Warning	RLX	Carter, Greenup	59 min
May 11, 1:48 AM EDT	Special Weather Statement	RLX	Lawrence	72 min
May 11, 10:07 AM EDT	Flash Flood Watch	RLX	Boyd, Carter, Greenup, Lawrence	7 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.