Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 26, NWS Louisville, KY

June 19, 2021Henry County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jun 19, 2021, 1:51 AM EDT for Henry County, Kentucky. It was in force for 5 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 19, 2021, 1:51 AM EDT (05:51 UTC)
Expired
Jun 19, 2021, 6:45 AM EDT
In force
5 hr
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Flood severity
None

County Henry County, KY

The radar

The Louisville radar (KLVX), 98 km from the middle of the area, began a volume at 05:52 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, 5.9 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2021-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2257 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 00:00Z on 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 214 square meters per square second.19395878Sfc1 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
2257 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
1236 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
214 m²/s²
0-3 km storm-relative helicity
240 m²/s²
Significant tornado parameter
1.9
Supercell composite
17.6

Open this sounding in Storm Lab

The text

As transmitted.

353 
WGUS53 KLMK 190551
FFWLMK
KYC103-191045-
/O.NEW.KLMK.FF.W.0026.210619T0551Z-210619T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
151 AM EDT Sat Jun 19 2021

The National Weather Service in Louisville has issued a

* Flash Flood Warning for...
  Southern Henry County in central Kentucky...

* Until 645 AM EDT.

* At 151 AM 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...
  New Castle, Pleasureville, Campbellsburg, Franklinton, Bethlehem, 
  Delville, Slabtown, North Pleasureville, Lockport and Fallis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3854 8523 3848 8510 3852 8498 3851 8498
      3849 8499 3847 8495 3846 8495 3843 8496
      3843 8494 3845 8494 3846 8492 3845 8491
      3844 8493 3843 8493 3842 8488 3839 8490
      3838 8490 3834 8500 3835 8510 3851 8527

FLASH FLOOD...RADAR INDICATED

$$

RAS
1 follow-up statement
006 
WGUS73 KLMK 191040
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
640 AM EDT Sat Jun 19 2021

KYC103-191050-
/O.EXP.KLMK.FF.W.0026.000000T0000Z-210619T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Henry KY-
640 AM EDT Sat Jun 19 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 645 AM EDT THIS MORNING FOR 
SOUTHERN HENRY COUNTY...

Flood waters continue to recede. Please continue to heed remaining 
road closures.

A Flash Flood Watch remains in effect until 1000 AM EDT for portions 
of Indiana and north central Kentucky.

LAT...LON 3854 8523 3848 8510 3852 8498 3851 8498
      3849 8499 3847 8495 3846 8495 3843 8496
      3843 8494 3845 8494 3846 8492 3845 8491
      3844 8493 3843 8493 3842 8488 3839 8490
      3838 8490 3834 8500 3835 8510 3851 8527

$$

RAS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 9:56 PM EDTSevere Thunderstorm WarningLMKHarrison34 min
Jun 18, 10:03 PM EDTSpecial Weather StatementLMKScott27 min
Jun 18, 10:17 PM EDTSpecial Weather StatementLMKNicholas28 min
Jun 18, 11:20 PM EDTSpecial Weather StatementLMKTrimble25 min
Jun 18, 11:27 PM EDTSevere Thunderstorm WarningLMKTrimble33 min
Jun 18, 11:48 PM EDTSpecial Weather StatementLMKHenry, Trimble27 min
Jun 19, 12:22 AM EDTFlash Flood WarningLMKTrimble6 hr
Jun 19, 12:28 AM EDTSpecial Weather StatementLMKHenry, Trimble32 min
Jun 19, 12:48 AM EDTSpecial Weather StatementLMKTrimble27 min
Jun 19, 1:05 AM EDTFlash Flood WarningLMKHenry6 hr
Jun 19, 1:14 AM EDTSpecial Weather StatementLMKHarrison, Scott31 min
Jun 19, 1:46 AM EDTSpecial Weather StatementLMKBourbon, Fayette, Harrison, Scott44 min
Jun 19, 2:28 AM EDTAreal Flood AdvisoryLMKFranklin, Scott3 hr
Jun 19, 7:53 AM EDTSpecial Weather StatementLMKTrimble37 min
Jun 19, 8:27 AM EDTSpecial Weather StatementLMKHenry, Jefferson, Oldham33 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.