Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 60, NWS Jackson, KY

August 15, 2021Laurel County, Kentucky

NWS Jackson, KY issued this flash flood warning at Aug 15, 2021, 7:01 PM EDT for Laurel County, Kentucky. It was in force for 3 hr. 2 reports 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 15, 2021, 7:01 PM EDT (23:01 UTC)
Expired
Aug 15, 2021, 10:21 PM EDT
In force
3 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

County Laurel County, KY

The radar

The Jackson,KY radar (KJKL), 87 km from the middle of the area, began a volume at 23:04 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

TimeReportWhereRemark
Aug 15, 7:30 PM EDTFLASH FLOOD1 Ssw Pittsburg, KYPORTION OF I-75 WAS FLOODED BETWEEN MM 36 AND 41.
Aug 15, 8:00 PM EDTFLASH FLOOD1 Nnw Sublimity City, KYHIGHWAY 192 NEAR THE POST OFFICE HAD APPROXIMATELY 6 INCHES OF WATER FLOWING OVER THE ROAD. WATER RECEDED BY 9 PM.

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, 11.0 hours before the alert went out and 248 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 2021-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 152 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 2021-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
152 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
697 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

709 
WGUS53 KJKL 152301
FFWJKL
KYC125-160100-
/O.NEW.KJKL.FF.W.0060.210815T2301Z-210816T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson KY
701 PM EDT Sun Aug 15 2021

The National Weather Service in Jackson has issued a

* Flash Flood Warning for...
  Central Laurel County in south central Kentucky...

* Until 900 PM EDT.

* At 701 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts up 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...
  London, Sublimity City, London-Corbin Airport, Pittsburg, 
  Fariston, Levi Jackson S.P. and Maplesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3718 8413 3714 8399 3703 8409 3708 8419

FLASH FLOOD...RADAR INDICATED

$$

CMF
2 follow-up statements
720 
WGUS53 KJKL 160005
FFWJKL
KYC125-160300-
/O.EXT.KJKL.FF.W.0060.000000T0000Z-210816T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson KY
805 PM EDT Sun Aug 15 2021

The National Weather Service in Jackson has extended the

* Flash Flood Warning for...
  Central Laurel County in south central Kentucky...

* Until 1100 PM EDT.

* At 805 PM EDT, local law enforcement reported thunderstorms 
  producing heavy rain across the warned area. Between 1 and 2 
  inches of rain have fallen. Additional rainfall amounts up to 1 
  inch are possible in the warned area. Flash flooding is already 
  occurring in the London area.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Law enforcement reported.

  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...
  London, Sublimity City, London-Corbin Airport, Pittsburg, 
  Fariston, Levi Jackson S.P. and Maplesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3718 8413 3714 8399 3703 8409 3708 8419

FLASH FLOOD...OBSERVED

$$

CMF
447 
WGUS73 KJKL 160221
FFSJKL

Flash Flood Statement
National Weather Service Jackson KY
1021 PM EDT Sun Aug 15 2021

KYC125-160231-
/O.CAN.KJKL.FF.W.0060.000000T0000Z-210816T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Laurel KY-
1021 PM EDT Sun Aug 15 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL LAUREL COUNTY...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 3718 8413 3714 8399 3703 8409 3708 8419

$$

CMF

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 8:04 PM EDTSpecial Weather StatementJKLBell, Harlan41 min
Aug 14, 8:09 PM EDTSevere Thunderstorm WarningJKLBell, Harlan, Leslie36 min
Aug 14, 8:14 PM EDTFlash Flood WarningJKLMcCreary, Pulaski, Wayne91 min
Aug 14, 8:28 PM EDTSevere Thunderstorm WarningJKLBell47 min
Aug 14, 8:43 PM EDTSpecial Weather StatementJKLMcCreary47 min
Aug 14, 9:13 PM EDTFlash Flood WarningJKLMcCreary2 hr
Aug 14, 9:31 PM EDTSpecial Weather StatementJKLWhitley44 min
Aug 14, 9:47 PM EDTSpecial Weather StatementJKLHarlan, Letcher43 min
Aug 14, 9:51 PM EDTSpecial Weather StatementJKLKnox39 min
Aug 14, 10:15 PM EDTSpecial Weather StatementJKLWhitley30 min
Aug 14, 10:31 PM EDTSpecial Weather StatementJKLLeslie, Letcher, Perry44 min
Aug 15, 4:35 PM EDTSpecial Weather StatementJKLWayne25 min
Aug 15, 6:00 PM EDTSpecial Weather StatementJKLPulaski45 min
Aug 15, 6:46 PM EDTAreal Flood AdvisoryJKLLaurel15 min
Aug 15, 7:12 PM EDTSpecial Weather StatementJKLKnox, Whitley48 min
Aug 15, 7:15 PM EDTSpecial Weather StatementJKLLetcher, Pike45 min
Aug 15, 7:41 PM EDTAreal Flood AdvisoryJKLLetcher, Pike2 hr
Aug 15, 7:42 PM EDTAreal Flood AdvisoryJKLBell, Clay, Knox, Leslie, Whitley2 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.