Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 25, NWS Paducah, KY

June 21, 2021Christian County, Hopkins County, Muhlenberg County, Kentucky

NWS Paducah, KY issued this flash flood warning at Jun 21, 2021, 1:20 PM CDT for Christian County, Hopkins County, Muhlenberg County, Kentucky. It was in force for 2 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 21, 2021, 1:20 PM CDT (18:20 UTC)
Expired
Jun 21, 2021, 3:42 PM CDT
In force
2 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

Counties Christian County, KY, Hopkins County, KY, Muhlenberg County, KY

The radar

The Ft Campbell radar (KHPX), 47 km from the middle of the area, began a volume at 18:24 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

Nashville Metro, TN (KBNA), launched 12:00Z, 6.3 hours before the alert went out and 129 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.

332 
WGUS53 KPAH 211820
FFWPAH
KYC047-107-177-212115-
/O.NEW.KPAH.FF.W.0025.210621T1820Z-210621T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Hopkins County in northwestern Kentucky...
  Christian County in south central Kentucky...
  Muhlenberg County in south central Kentucky...

* Until 415 PM CDT.

* At 120 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...
  Hopkinsville, Madisonville, Oak Grove, Central City, Dawson 
  Springs, Fort Campbell, Clarksville, Earlington, Nortonville, 
  Pembroke, Mortons Gap, Crofton, Powderly, Weir, Graham, 
  Greenville, Dunmor, White Plains, Drakesboro and St. Charles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3729 8781 3740 8735 3736 8722 3740 8713
      3738 8709 3733 8714 3736 8703 3726 8697
      3724 8691 3719 8689 3714 8693 3711 8689
      3709 8690 3704 8711 3704 8726 3664 8734
      3664 8769 3697 8766 3700 8772 3715 8768

FLASH FLOOD...RADAR INDICATED

$$

ML
2 follow-up statements
973 
WGUS73 KPAH 211902
FFSPAH

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

KYC047-107-177-212115-
/O.CON.KPAH.FF.W.0025.000000T0000Z-210621T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Christian KY-Hopkins KY-Muhlenberg KY-
202 PM CDT Mon Jun 21 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM CDT THIS 
AFTERNOON FOR HOPKINS, CHRISTIAN AND MUHLENBERG COUNTIES...

At 202 PM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Radar estimates that between 1 and 2 
inches of rain have fallen. Heavy rain will continue for the next 
couple of hours 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...
  Hopkinsville, Madisonville, Oak Grove, Central City, Dawson 
  Springs, Fort Campbell, Clarksville, Earlington, Nortonville, 
  Pembroke, Mortons Gap, Crofton, Powderly, Weir, Graham, 
  Greenville, Dunmor, White Plains, Drakesboro and St. Charles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3729 8781 3740 8735 3736 8722 3740 8713
      3738 8709 3733 8714 3736 8703 3726 8697
      3724 8691 3719 8689 3714 8693 3711 8689
      3709 8690 3704 8711 3704 8726 3664 8734
      3664 8769 3697 8766 3700 8772 3715 8768

FLASH FLOOD...RADAR INDICATED

$$

ML
386 
WGUS73 KPAH 212042
FFSPAH

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

KYC047-107-177-212052-
/O.CAN.KPAH.FF.W.0025.000000T0000Z-210621T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Christian KY-Hopkins KY-Muhlenberg KY-
342 PM CDT Mon Jun 21 2021

...FLASH FLOOD WARNING IS CANCELLED FOR HOPKINS, CHRISTIAN AND 
MUHLENBERG COUNTIES...

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 has been cancelled. 
Use caution if traveling in west Kentucky this afternoon and evening 
as some areas with water may be slow to drain or recede.

LAT...LON 3729 8781 3740 8735 3736 8722 3740 8713
      3738 8709 3733 8714 3736 8703 3726 8697
      3724 8691 3719 8689 3714 8693 3711 8689
      3709 8690 3704 8711 3704 8726 3664 8734
      3664 8769 3697 8766 3700 8772 3715 8768

$$

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, 12:33 PM CDTFlash Flood WarningPAHCaldwell, Calloway, Graves, Lyon, Marshall, Trigg3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.