Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 36, NWS Louisville, KY

July 16, 2021Marion County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jul 16, 2021, 4:15 PM EDT for Marion County, Kentucky. It was in force for 2 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 16, 2021, 4:15 PM EDT (20:15 UTC)
Expired
Jul 16, 2021, 6:15 PM EDT
In force
2 hr
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Flood severity
None

County Marion County, KY

What was reported inside it

TimeReportWhereRemark
Jul 16, 5:00 PM EDTFLASH FLOOD2 N Saint Mary, KYHWY 49 NEAR ARTHUR MATTINGLY ROAD WAS IMPASSABLE FOR A TIME DUE TO WATER OVER THE ROADWAY (AND HAS SINCE REOPENED).

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, 8.3 hours before the alert went out and 199 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 2021-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1708 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 2021-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
1708 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
838 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

520 
WGUS53 KLMK 162015
FFWLMK
KYC155-162215-
/O.NEW.KLMK.FF.W.0036.210716T2015Z-210716T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
415 PM EDT Fri Jul 16 2021

The National Weather Service in Louisville has issued a

* Flash Flood Warning for...
  Northwestern Marion County in central Kentucky...

* Until 615 PM EDT.

* At 415 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. 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...
  Loretto, Raywick, Burkes Spring, Saint Francis, Nerinx, Saint 
  Mary, Gandertown and Dant.

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.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

Please report flooding to your local law enforcement agency when you 
can do so safely and have them relay your report to the National 
Weather Service in Louisville.

&&

LAT...LON 3761 8547 3772 8542 3770 8539 3766 8537
      3765 8534 3763 8526 3760 8524 3754 8547

FLASH FLOOD...RADAR INDICATED

$$

MJ
1 follow-up statement
347 
WGUS73 KLMK 162213
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
613 PM EDT Fri Jul 16 2021

KYC155-162223-
/O.EXP.KLMK.FF.W.0036.000000T0000Z-210716T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion KY-
613 PM EDT Fri Jul 16 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 615 PM EDT THIS EVENING FOR 
NORTHWESTERN MARION COUNTY...

The heavy rain has ended.  Water will continue to recede across the 
warned area over the next few hours.

LAT...LON 3761 8547 3772 8542 3770 8539 3766 8537
      3765 8534 3763 8526 3760 8524 3754 8547

$$

MJ

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 1:59 PM EDTSpecial Weather StatementLMKBullitt16 min
Jul 16, 2:04 PM EDTSpecial Weather StatementLMKLincoln26 min
Jul 16, 2:12 PM EDTAreal Flood AdvisoryLMKAdair, Casey76 min
Jul 16, 2:28 PM EDTSpecial Weather StatementLMKSpencer32 min
Jul 16, 2:42 PM EDTSevere Thunderstorm WarningLMKShelby, Spencer33 min
Jul 16, 2:59 PM EDTSpecial Weather StatementLMKFranklin31 min
Jul 16, 3:12 PM EDTSevere Thunderstorm WarningLMKFranklin, Shelby33 min
Jul 16, 3:48 PM EDTSpecial Weather StatementLMKGreen, Marion, Mercer, Taylor, Washington57 min
Jul 16, 3:49 PM EDTSpecial Weather StatementLMKRobertson26 min
Jul 16, 3:57 PM EDTAreal Flood AdvisoryLMKMarion, Nelson, Washington3 hr
Jul 16, 3:59 PM EDTAreal Flood AdvisoryLMKAnderson, Franklin, Scott, Shelby, Woodford3 hr
Jul 16, 4:02 PM EDTSpecial Weather StatementLMKAllen, Barren, Metcalfe, Monroe43 min
Jul 16, 4:06 PM EDTSpecial Weather StatementLMKBourbon, Nicholas24 min
Jul 16, 4:17 PM EDTSpecial Weather StatementLMKHart28 min
Jul 16, 4:28 PM EDTSpecial Weather StatementLMKNicholas32 min
Jul 16, 4:46 PM EDTSpecial Weather StatementLMKAdair, Boyle, Casey, Clinton, Cumberland, Green and 5 more59 min
Jul 16, 4:52 PM EDTSpecial Weather StatementLMKOldham38 min
Jul 16, 5:28 PM EDTSevere Thunderstorm WarningLMKAdair, Boyle, Casey, Garrard, Lincoln, Marion and 2 more47 min
Jul 16, 5:41 PM EDTAreal Flood AdvisoryLMKAdair, Casey, Green, Marion, Russell, Taylor3 hr
Jul 16, 5:50 PM EDTSpecial Weather StatementLMKBullitt40 min
Jul 16, 6:15 PM EDTSpecial Weather StatementLMKBoyle, Garrard, Lincoln45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.