Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 26, NWS Paducah, KY

June 29, 2021McLean County, Kentucky

NWS Paducah, KY issued this flash flood warning at Jun 29, 2021, 7:05 PM CDT for McLean County, Kentucky. It was in force for 48 min. 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 29, 2021, 7:05 PM CDT (00:05 UTC)
Expired
Jun 29, 2021, 7:53 PM CDT
In force
48 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

County McLean County, KY

The radar

The Ft Campbell radar (KHPX), 81 km from the middle of the area, began a volume at 00:08 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 00:00Z, 0.1 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 00:00Z on 2021-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 224 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 00:00Z on 2021-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 square meters per square second.1939Sfc1 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
224 J/kg
Mixed-layer CIN
-158 J/kg
Mixed-layer LCL
1148 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

025 
WGUS53 KPAH 300005
FFWPAH
KYC149-300200-
/O.NEW.KPAH.FF.W.0026.210630T0005Z-210630T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
705 PM CDT Tue Jun 29 2021

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Southeastern McLean County in northwestern Kentucky...

* Until 900 PM CDT.

* At 705 PM 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...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...
  Calhoun, Livermore, Sacramento and Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3740 8718 3741 8731 3756 8733 3756 8705
      3755 8705 3747 8711 3747 8712 3746 8711
      3742 8710 3741 8712 3741 8717

FLASH FLOOD...RADAR INDICATED

$$

GREG
1 follow-up statement
189 
WGUS73 KPAH 300053
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
753 PM CDT Tue Jun 29 2021

KYC149-300103-
/O.CAN.KPAH.FF.W.0026.000000T0000Z-210630T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
McLean KY-
753 PM CDT Tue Jun 29 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN MCLEAN COUNTY...

Flooding is no longer expected to pose a threat. Please continue to 
heed any remaining road closures.

LAT...LON 3740 8718 3741 8731 3756 8733 3756 8705
      3755 8705 3747 8711 3747 8712 3746 8711
      3742 8710 3741 8712 3741 8717

$$

GREG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 7:13 PM CDTSevere Thunderstorm WarningPAHDaviess35 min
Jun 29, 7:44 PM CDTSpecial Weather StatementPAHDaviess31 min
Jun 30, 3:47 PM CDTSpecial Weather StatementPAHHickman28 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.