Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 9, NWS Louisville, KY

May 4, 2021Barren County, Kentucky

NWS Louisville, KY issued this flash flood warning at May 4, 2021, 3:27 AM CDT for Barren County, Kentucky. It was in force for 3 hr. 3 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, 3:27 AM CDT (08:27 UTC)
Expired
May 4, 2021, 6:30 AM CDT
In force
3 hr
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Flood severity
None

County Barren County, KY

The radar

The Nashville radar (KOHX), 99 km from the middle of the area, began a volume at 08:29 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, 6:25 AM CDTFLASH FLOOD2 Se Glasgow, KYCUMBERLAND PKWY EASTBOUND AT EXIT 14 WAS FLOODING.
May 4, 6:25 AM CDTFLASH FLOOD3 Nne Glasgow, KYUS 31E FLOODED IN GLASGOW.
May 4, 6:30 AM CDTHEAVY RAIN 2.5211 W Glasgow, KYKY MESONET REPORTED 2.52 INCHES OF RAIN HAD FALLEN IN ONE HOUR AT THE BARREN COUNTY SITE. 5.35 INCHES SINCE MIDNIGHT.

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, 8.5 hours before the alert went out and 112 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.

507 
WGUS53 KLMK 040827
FFWLMK
KYC009-041130-
/O.NEW.KLMK.FF.W.0009.210504T0827Z-210504T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Louisville has issued a

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

* Until 630 AM CDT.

* At 326 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 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...
  Glasgow, Oil City, Carden, Pritchardsville, Stovall, Beckton, Bon 
  Ayr, Red Cross, and Lecta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3706 8607 3704 8582 3696 8583 3697 8615
      3706 8611 3704 8608 3704 8607

FLASH FLOOD...RADAR INDICATED

$$

13

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, 3:42 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, 5:54 AM CDTFlash Flood WarningLMKLogan, Simpson, 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.