Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 27, NWS Louisville, KY

June 21, 2021Boyle County, Casey County, Marion County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jun 21, 2021, 3:33 PM EDT for Boyle County, Casey County, Marion 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
Jun 21, 2021, 3:33 PM EDT (19:33 UTC)
Expired
Jun 21, 2021, 5:49 PM EDT
In force
2 hr
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Flood severity
None

Counties Boyle County, KY, Casey County, KY, Marion County, KY

The radar

The Louisville radar (KLVX), 91 km from the middle of the area, began a volume at 19:36 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

Nashville Metro, TN (KBNA), launched 12:00Z, 7.6 hours before the alert went out and 206 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, Nashville Metro, TN at 12:00Z on 2021-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1530 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, Nashville Metro, TN at 12:00Z on 2021-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 211 square meters per square second.193958Sfc1 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
1530 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
919 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
211 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
1.3
Supercell composite
9.6

Open this sounding in Storm Lab

The text

As transmitted.

006 
WGUS53 KLMK 211933
FFWLMK
KYC021-045-155-212245-
/O.NEW.KLMK.FF.W.0027.210621T1933Z-210621T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
333 PM EDT Mon Jun 21 2021

The National Weather Service in Louisville has issued a

* Flash Flood Warning for...
  Western Boyle County in central Kentucky...
  North Central Casey County in central Kentucky...
  Southeastern Marion County in central Kentucky...

* Until 645 PM EDT.

* At 333 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 0.5 to 1 inch are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Danville, Lebanon, Perryville, Bradfordsville, Gravel Switch, 
  Aliceton, Riley, Forkland, Brumfield and Jacktown.

This includes the following streams and drainages...
  Baughman Creek, Salt River, Dry Fork, Galloway Creek, Followell 
  Creek, Hardins Creek, Rolling Fork, White Oak Creek, Elk Cave 
  Branch, Pope Creek, Quirks Run, Landers Creek, Carpenter Fork, 
  Hanging Fork Creek, Cartwright Creek, Buffalo Creek, Jones Creek, 
  Buck Creek, North Rolling Fork, Rush Branch, Chaplin River, Old 
  Lick Creek, Goose Creek, Mocks Branch, Little South Fork, Tallow 
  Creek, Hungry Neck Fork, Beech Fork, Medlock Creek, East Fork 
  Beech Fork, Moore Creek, Big South Fork, Doctors Fork and Wards 
  Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3746 8518 3745 8525 3747 8531 3757 8528
      3761 8515 3763 8503 3769 8488 3763 8481
      3751 8486 3746 8491 3744 8503 3746 8517

FLASH FLOOD...RADAR INDICATED

$$

RJS
1 follow-up statement
366 
WGUS73 KLMK 212149
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
549 PM EDT Mon Jun 21 2021

KYC021-045-155-212159-
/O.CAN.KLMK.FF.W.0027.000000T0000Z-210621T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boyle KY-Casey KY-Marion KY-
549 PM EDT Mon Jun 21 2021

...FLASH FLOOD WARNING IS CANCELLED FOR WESTERN BOYLE, NORTH CENTRAL 
CASEY AND SOUTHEASTERN MARION COUNTIES...

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

LAT...LON 3746 8518 3745 8525 3747 8531 3757 8528
      3761 8515 3763 8503 3769 8488 3763 8481
      3751 8486 3746 8491 3744 8503 3746 8517

$$

DM

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 11:21 AM EDTSpecial Weather StatementLMKBreckinridge24 min
Jun 21, 11:42 AM EDTSpecial Weather StatementLMKOhio48 min
Jun 21, 11:48 AM EDTSpecial Weather StatementLMKBreckinridge42 min
Jun 21, 12:06 PM EDTSpecial Weather StatementLMKClark24 min
Jun 21, 12:21 PM EDTSpecial Weather StatementLMKSpencer39 min
Jun 21, 12:26 PM EDTSpecial Weather StatementLMKHardin49 min
Jun 21, 12:34 PM EDTSpecial Weather StatementLMKGrayson41 min
Jun 21, 12:41 PM EDTSevere Thunderstorm WarningLMKGrayson, Hardin, Hart34 min
Jun 21, 12:54 PM EDTSpecial Weather StatementLMKNelson, Spencer51 min
Jun 21, 1:00 PM EDTSevere Thunderstorm WarningLMKAnderson, Nelson, Washington45 min
Jun 21, 1:09 PM EDTAreal Flood AdvisoryLMKBreckinridge, Bullitt, Grayson, Hardin, Meade, Nelson4 hr
Jun 21, 1:19 PM EDTSpecial Weather StatementLMKAnderson, Fayette, Woodford41 min
Jun 21, 1:27 PM EDTSpecial Weather StatementLMKClark33 min
Jun 21, 1:35 PM EDTSpecial Weather StatementLMKHardin55 min
Jun 21, 1:42 PM EDTSpecial Weather StatementLMKWashington48 min
Jun 21, 1:48 PM EDTSevere Thunderstorm WarningLMKMarion, Nelson, Washington27 min
Jun 21, 1:55 PM EDTSevere Thunderstorm WarningLMKClark, Fayette, Jessamine25 min
Jun 21, 2:09 PM EDTSpecial Weather StatementLMKMadison36 min
Jun 21, 2:11 PM EDTSpecial Weather StatementLMKOhio34 min
Jun 21, 2:13 PM EDTSpecial Weather StatementLMKBoyle32 min
Jun 21, 2:19 PM EDTSpecial Weather StatementLMKGrayson26 min
Jun 21, 2:28 PM EDTSevere Thunderstorm WarningLMKClark, Madison15 min
Jun 21, 2:30 PM EDTSpecial Weather StatementLMKLincoln30 min
Jun 21, 2:33 PM EDTSpecial Weather StatementLMKLarue27 min
Jun 21, 2:38 PM EDTAreal Flood AdvisoryLMKButler, Grayson, Ohio3 hr
Jun 21, 2:41 PM EDTSevere Thunderstorm WarningLMKGarrard, Lincoln34 min
Jun 21, 2:49 PM EDTSpecial Weather StatementLMKMadison41 min
Jun 21, 2:58 PM EDTSevere Thunderstorm WarningLMKMadison32 min
Jun 21, 3:13 PM EDTAreal Flood AdvisoryLMKGreen, Hart, Larue, Marion, Nelson, Taylor3 hr
Jun 21, 3:20 PM EDTSpecial Weather StatementLMKEdmonson25 min
Jun 21, 3:25 PM EDTSpecial Weather StatementLMKBoyle35 min
Jun 21, 3:36 PM EDTSpecial Weather StatementLMKMetcalfe24 min
Jun 21, 3:38 PM EDTSpecial Weather StatementLMKClinton22 min
Jun 21, 3:40 PM EDTAreal Flood AdvisoryLMKEdmonson, Hart, Warren3 hr
Jun 21, 4:57 PM EDTSpecial Weather StatementLMKClinton18 min
Jun 21, 4:59 PM EDTSpecial Weather StatementLMKFayette31 min

Nearby

Flash Flood Warnings in Kentucky, 2021Every flash flood warning in 2021

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.