Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 15, NWS Louisville, KY

May 4, 2021Logan County, Simpson County, Warren County, Kentucky

NWS Louisville, KY issued this flash flood warning at May 4, 2021, 5:54 AM CDT for Logan County, Simpson County, Warren County, Kentucky. It was in force for 3 hr. 5 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
May 4, 2021, 5:54 AM CDT (10:54 UTC)
Expired
May 4, 2021, 8:46 AM CDT
In force
3 hr
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Flood severity
None

Counties Logan County, KY, Simpson County, KY, Warren County, KY

The radar

The Ft Campbell radar (KHPX), 74 km from the middle of the area, began a volume at 10:57 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
May 4, 6:07 AM CDTFLASH FLOOD5 Ssw Oakland, KYRESIDENCE IN 5000 BLACK OF GOTTS HYDRO ROAD. FIRE DEPARTMENT ADVISED THAT THE SUBFLOOR OF THE HOME DROPPED ABOUT 8 INCHES IN 30 MINUTES. NO INJURIES REPORTED. TIME GIVEN BY WHEN FIRE DEPARTMENT RECEIVED THE CALL.
May 4, 6:30 AM CDTFLASH FLOOD2 W Bowling Green, KYREPORT OF FLOODED ROADS AND A CAR FLOODED RUSSELLVILLE RD/CAMPBESLL LN.
May 4, 6:39 AM CDTFLASH FLOOD2 Nw Rockfield, KYROCKFIELD BROWNING RD WARREN COUNTY 4 FEET OF WATER OVER ROADWAY.
May 4, 7:08 AM CDTFLASH FLOOD3 Nnw Plano, KYAPPROXIMATELY 3 FEET OF WATER OVER THE ROADWAY IN TWO DIFFERENT PLACES NEAR INTERSECTION OF THREE SPRINGS ROAD AND SMALLHOUSE ROAD.
May 4, 7:10 AM CDTFLASH FLOOD3 Wsw Bowling Green, KYCARS FLOODED AND STALLED UNDER ABOUT THREE FEET OF WATER AT RUSSELLVILLE ROAD AND I-165.

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 00:00Z, 10.9 hours before the alert went out and 100 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 00:00Z on 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2263 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2021-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 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
2263 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
193 m²/s²
Significant tornado parameter
1.3
Supercell composite
7.6

Open this sounding in Storm Lab

The text

As transmitted.

753 
WGUS53 KLMK 041054
FFWLMK
KYC141-213-227-041400-
/O.NEW.KLMK.FF.W.0015.210504T1054Z-210504T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
554 AM CDT Tue May 4 2021

The National Weather Service in Louisville has issued a

* Flash Flood Warning for...
  Eastern Logan County in south central Kentucky...
  Northwestern Simpson County in south central Kentucky...
  Warren County in south central Kentucky...

* Until 900 AM CDT.

* At 553 AM CDT, 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...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Bowling Green, Plum Springs, Memphis Junction, Crestmoor, Mount 
  Victor, Auburn, Woodburn, Oakland, Blue Level, and Rockfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small 
creeks and streams, urban areas, highways, streets and underpasses 
as well as other drainage areas and low lying spots.

&&

LAT...LON 3674 8683 3695 8686 3702 8673 3700 8667
      3706 8665 3715 8647 3715 8645 3717 8644
      3715 8641 3717 8640 3708 8628 3709 8625
      3690 8625

FLASH FLOOD...RADAR INDICATED

$$

13
2 follow-up statements
851 
WGUS73 KLMK 041142
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
642 AM CDT Tue May 4 2021

KYC141-213-227-041400-
/O.CON.KLMK.FF.W.0015.000000T0000Z-210504T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Logan KY-Simpson KY-Warren KY-
642 AM CDT Tue May 4 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING 
FOR EASTERN LOGAN, NORTHWESTERN SIMPSON AND WARREN COUNTIES...

At 641 AM CDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area and numerous flooded 
roads, including portions of Morgantown Road and Russellville Road. 
Between 2 and 4 inches of rain have fallen.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
  Bowling Green, Plum Springs, Memphis Junction, Crestmoor, Mount 
  Victor, Auburn, Woodburn, Oakland, Blue Level and Rockfield.

Additional rainfall amounts of 0.5 to 1.5 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small 
creeks and streams, urban areas, highways, streets and underpasses 
as well as other drainage areas and low lying spots.

&&

LAT...LON 3674 8683 3695 8686 3702 8673 3700 8667
      3706 8665 3715 8647 3715 8645 3717 8644
      3715 8641 3717 8640 3708 8628 3709 8625
      3690 8625

FLASH FLOOD...OBSERVED

$$

DLM
015 
WGUS73 KLMK 041346
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
846 AM CDT Tue May 4 2021

KYC141-213-227-041356-
/O.CAN.KLMK.FF.W.0015.000000T0000Z-210504T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Logan KY-Simpson KY-Warren KY-
846 AM CDT Tue May 4 2021

...FLASH FLOOD WARNING FOR EASTERN LOGAN, NORTHWESTERN SIMPSON AND 
WARREN COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...

LAT...LON 3674 8683 3695 8686 3702 8673 3700 8667
      3706 8665 3715 8647 3715 8645 3717 8644
      3715 8641 3717 8640 3708 8628 3709 8625
      3690 8625

$$

DLM

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 12:08 AM CDTSpecial Weather StatementLMKWarren22 min
May 4, 12:12 AM CDTSevere Thunderstorm WarningLMKEdmonson, Warren33 min
May 4, 12:26 AM CDTSevere Thunderstorm WarningLMKAllen, Monroe34 min
May 4, 12:45 AM CDTSpecial Weather StatementLMKEdmonson15 min
May 4, 1:32 AM CDTSpecial Weather StatementLMKBarren, Warren43 min
May 4, 1:57 AM CDTSpecial Weather StatementLMKMetcalfe33 min
May 4, 2:15 AM CDTSpecial Weather StatementLMKMonroe30 min
May 4, 2:18 AM CDTSpecial Weather StatementLMKWarren27 min
May 4, 2:43 AM CDTSpecial Weather StatementLMKBarren32 min
May 4, 2:54 AM CDTSpecial Weather StatementLMKButler36 min
May 4, 3:13 AM CDTSevere Thunderstorm WarningLMKBarren, Edmonson, Hart32 min
May 4, 3:22 AM CDTSevere Thunderstorm WarningLMKClinton, Cumberland23 min
May 4, 3:27 AM CDTFlash Flood WarningLMKBarren3 hr
May 4, 3:42 AM CDTSevere Thunderstorm WarningLMKCumberland, Monroe33 min
May 4, 3:47 AM CDTSpecial Weather StatementLMKAdair, Butler, Clinton, Cumberland, Edmonson, Green and 2 more28 min
May 4, 3:55 AM CDTFlash Flood WatchLMKAdair, Allen, Barren, Butler, Casey, Clinton and 13 more22 hr
May 4, 4:06 AM CDTFlash Flood WarningLMKCumberland, Monroe3 hr
May 4, 4:11 AM CDTSpecial Weather StatementLMKButler34 min
May 4, 4:21 AM CDTFlash Flood WarningLMKButler5 hr
May 4, 4:24 AM CDTSpecial Weather StatementLMKEdmonson, Warren36 min
May 4, 4:51 AM CDTFlash Flood WarningLMKEdmonson, Hart3 hr
May 4, 5:03 AM CDTSpecial Weather StatementLMKGreen27 min
May 4, 5:20 AM CDTSpecial Weather StatementLMKAllen, Barren, Logan, Simpson, Warren40 min
May 4, 5:21 AM CDTFlash Flood WarningLMKAdair, Cumberland, Metcalfe3 hr
May 4, 5:49 AM CDTFlash Flood WarningLMKBarren, Edmonson, Metcalfe, Warren3 hr
May 4, 5:58 AM CDTSpecial Weather StatementLMKAllen, Simpson47 min
May 4, 6:10 AM CDTSevere Thunderstorm WarningLMKAllen, Simpson20 min
May 4, 6:26 AM CDTSpecial Weather StatementLMKBarren, Monroe19 min
May 4, 6:28 AM CDTAreal Flood AdvisoryLMKAllen, Barren, Metcalfe, Monroe3 hr
May 4, 6:43 AM CDTSpecial Weather StatementLMKAllen, Cumberland, Monroe47 min
May 4, 6:51 AM CDTFlash Flood WarningLMKAdair, Barren, Clinton, Cumberland, Metcalfe, Monroe and 1 more6 hr
May 4, 8:46 AM CDTAreal Flood WarningLMKLogan, Simpson, Warren3 hr
May 4, 8:50 AM CDTAreal Flood WarningLMKBarren, Edmonson, Metcalfe, Warren4 hr
May 4, 10:12 AM CDTRiver Flood WarningLMKCumberland, Monroe11 hr
May 4, 1:19 PM CDTRiver Flood WarningLMKButler, Warren4 days
May 4, 1:19 PM CDTRiver Flood WarningLMKButler, Muhlenberg, Ohio5 days
May 4, 5:40 PM CDTSpecial Weather StatementLMKWarren50 min
May 4, 5:48 PM CDTSpecial Weather StatementLMKSpencer27 min
May 4, 6:13 PM CDTSpecial Weather StatementLMKSimpson47 min
May 4, 6:26 PM CDTSpecial Weather StatementLMKEdmonson49 min
May 4, 6:41 PM CDTSpecial Weather StatementLMKButler34 min
May 4, 6:56 PM CDTSpecial Weather StatementLMKButler34 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; radar from the NEXRAD Level II archive.