Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 24, NWS Paducah, KY

June 21, 20216 counties in Kentucky

NWS Paducah, KY issued this flash flood warning at Jun 21, 2021, 12:33 PM CDT for 6 counties in Kentucky. It was in force for 3 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
Jun 21, 2021, 12:33 PM CDT (17:33 UTC)
Expired
Jun 21, 2021, 3:30 PM CDT
In force
3 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

Counties Caldwell County, KY, Calloway County, KY, Graves County, KY, Lyon County, KY, Marshall County, KY, Trigg County, KY

The radar

The Paducah radar (KPAH), 68 km from the middle of the area, began a volume at 17:34 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
Jun 21, 12:42 PM CDTFLASH FLOOD2 S Princeton, KY6 INCHES OF WATER FLOWING ACROSS HIGHWAY 91 SOUTH

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, 5.6 hours before the alert went out and 156 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 2021-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1530 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 2021-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 211 square meters per square second.193958Sfc1 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
1530 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
919 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
211 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
1.3
Supercell composite
9.6

Open this sounding in Storm Lab

The text

As transmitted.

586 
WGUS53 KPAH 211733
FFWPAH
KYC033-035-083-143-157-221-212030-
/O.NEW.KPAH.FF.W.0024.210621T1733Z-210621T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
1233 PM CDT Mon Jun 21 2021

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Caldwell County in western Kentucky...
  Calloway County in western Kentucky...
  Graves County in western Kentucky...
  Lyon County in western Kentucky...
  Marshall County in western Kentucky...
  Trigg County in western Kentucky...

* Until 330 PM CDT.

* At 1233 PM CDT, Doppler radar indicated thunderstorms along and 
  ahead of a cold front producing heavy rain across the warned area. 
  Between 1 and 2 inches of rain have fallen. Some of these storms 
  are capable of extremely high rainfall rates of 1 inch in 15 
  minutes. Flash flooding is ongoing or expected to begin shortly. 
  Another 1 to 2 inches is possible with locally higher amounts.

  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...
  Murray, Mayfield, Princeton, Benton, Calvert City, Cadiz, 
  Eddyville, Land Between The Lakes Area, Canton, Sedalia, 
  Lynnville, Cobb, Farmersville, Rockcastle, Kuttawa, Wingo, Hardin, 
  Hazel, Water Valley and Aurora.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3704 8830 3697 8824 3700 8821 3704 8822
      3729 8781 3726 8779 3724 8780 3721 8776
      3720 8777 3721 8775 3714 8770 3700 8773
      3699 8771 3664 8773 3663 8785 3668 8807
      3654 8803 3650 8806 3650 8882 3678 8881

FLASH FLOOD...RADAR INDICATED

$$

ML
2 follow-up statements
547 
WGUS73 KPAH 211829
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
129 PM CDT Mon Jun 21 2021

KYC033-035-083-143-157-221-212030-
/O.CON.KPAH.FF.W.0024.000000T0000Z-210621T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caldwell KY-Calloway KY-Graves KY-Lyon KY-Marshall KY-Trigg KY-
129 PM CDT Mon Jun 21 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM CDT THIS 
AFTERNOON FOR CALDWELL, CALLOWAY, GRAVES, LYON, MARSHALL AND TRIGG 
COUNTIES...

At 129 PM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Radar estimates that between 1 and 3 
inches of rain have fallen. Heavy rain will continue for the next 
hour or so before tapering off. Another 1 to 2 inches is possible. 
Use extreme caution if traveling this afternoon across much of west 
Kentucky.

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...
  Murray, Mayfield, Princeton, Benton, Calvert City, Cadiz, 
  Eddyville, Land Between The Lakes Area, Canton, Sedalia, 
  Lynnville, Cobb, Farmersville, Rockcastle, Kuttawa, Wingo, Hardin, 
  Hazel, Water Valley and Aurora.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3704 8830 3697 8824 3700 8821 3704 8822
      3729 8781 3726 8779 3724 8780 3721 8776
      3720 8777 3721 8775 3714 8770 3700 8773
      3699 8771 3664 8773 3663 8785 3668 8807
      3654 8803 3650 8806 3650 8882 3678 8881

FLASH FLOOD...RADAR INDICATED

$$

ML
708 
WGUS73 KPAH 212022
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
322 PM CDT Mon Jun 21 2021

KYC033-035-083-143-157-221-212030-
/O.CON.KPAH.FF.W.0024.000000T0000Z-210621T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caldwell KY-Calloway KY-Graves KY-Lyon KY-Marshall KY-Trigg KY-
322 PM CDT Mon Jun 21 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM CDT THIS 
AFTERNOON FOR CALDWELL, CALLOWAY, GRAVES, LYON, MARSHALL AND TRIGG 
COUNTIES...

At 322 PM CDT, Doppler showed the heavy rain moving off to the east 
and northeast. While some light rain may linger, the threat for 
flash flooding has ended and the warning will be allowed to expire. 
Use caution if traveling in west Kentucky this afternoon and evening 
as some areas with water may be slow to drain or recede.

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...
  Murray, Mayfield, Princeton, Benton, Calvert City, Cadiz, 
  Eddyville, Land Between The Lakes Area, Canton, Sedalia, 
  Lynnville, Cobb, Farmersville, Rockcastle, Kuttawa, Wingo, Hardin, 
  Hazel, Water Valley and Aurora.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3704 8830 3697 8824 3700 8821 3704 8822
      3729 8781 3726 8779 3724 8780 3721 8776
      3720 8777 3721 8775 3714 8770 3700 8773
      3699 8771 3664 8773 3663 8785 3668 8807
      3654 8803 3650 8806 3650 8882 3678 8881

FLASH FLOOD...RADAR INDICATED

$$

ML

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 11:33 AM CDTFlash Flood WarningPAHFulton, Hickman3 hr
Jun 21, 1:20 PM CDTFlash Flood WarningPAHChristian, Hopkins, Muhlenberg2 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.