Alert archive / Kentucky / Flash Flood Warnings in 2011

Flash Flood Warning 48, NWS Louisville, KY

July 7, 2011Fayette County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jul 7, 2011, 7:23 PM EDT for Fayette County, Kentucky. It was in force for 89 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 7, 2011, 7:23 PM EDT (23:23 UTC)
Expired
Jul 7, 2011, 8:52 PM EDT
In force
89 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Flood severity
None

County Fayette County, KY

The radar

The Jackson,KY radar (KJKL), 115 km from the middle of the area, began a volume at 23:25 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 12:00Z, 11.4 hours before the alert went out and 168 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 2011-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 479 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 2011-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
479 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1291 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
28 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.

404 
WGUS53 KLMK 072323
FFWLMK
KYC067-080215-
/O.NEW.KLMK.FF.W.0048.110707T2323Z-110708T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
723 PM EDT THU JUL 7 2011

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FAYETTE COUNTY IN EAST CENTRAL KENTUCKY...
  THIS INCLUDES THE CITY OF LEXINGTON...

* UNTIL 1015 PM EDT

* AT 719 PM EDT...THE PUBLIC REPORTED HEAVY STREET FLOODING FROM     
  THUNDERSTORMS ALONG A LINE FROM YARNALLTON TO CENTERVILLE...MOVING 
  NORTH AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...CADENTOWN...CARDINAL HILL...CHEVY
  CHASE...HIGHLANDS...MEADOWTHORPE...

  IN ADDITION...BRACKTOWN...YARNALLTON AND COLUMBUS ARE INCLUDED IN
  THIS FLASH FLOOD WARNING.

ONE TO TWO INCHES OF RAIN HAVE FALLEN IN A SHORT PERIOD OF TIME. 
ANOTHER INCH OF RAIN WILL BE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3800 8466 3802 8466 3813 8462 3820 8441
      3794 8432 3793 8434 3792 8433

$$

13
1 follow-up statement
204 
WGUS73 KLMK 080052
FFSLMK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
852 PM EDT THU JUL 7 2011

KYC067-080102-
/O.CAN.KLMK.FF.W.0048.000000T0000Z-110708T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAYETTE KY-
852 PM EDT THU JUL 7 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR FAYETTE COUNTY...

THE EARLIER STREET FLOODING HAD SUBSIDED AND NO HEAVY RAIN IS IN THE 
AREA.

LAT...LON 3800 8466 3802 8466 3813 8462 3820 8441
      3794 8432 3793 8434 3792 8433

$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 6:51 PM EDTSpecial Weather StatementLMKFayette24 min
Jul 7, 6:57 PM EDTAreal Flood AdvisoryLMKFayette116 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.