Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 32, NWS Louisville, KY

July 1, 2021Anderson County, Mercer County, Washington County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jul 1, 2021, 1:51 PM EDT for Anderson County, Mercer County, Washington County, Kentucky. It was in force for 3 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: Jul 1, 2021, 1:51 PM EDT (17:51 UTC)
Expired: Jul 1, 2021, 4:54 PM EDT
In force: 3 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Anderson County, KY, Mercer County, KY, Washington County, KY

The radar

The Louisville radar (KLVX), 74 km from the middle of the area, began a volume at 17:50 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 5.9 hours before the alert went out and 205 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 133 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 627 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -47 m²/s²
0-3 km storm-relative helicity: -20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

348 
WGUS53 KLMK 011751
FFWLMK
KYC005-167-229-012100-
/O.NEW.KLMK.FF.W.0032.210701T1751Z-210701T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
151 PM EDT Thu Jul 1 2021

The National Weather Service in Louisville has issued a

* Flash Flood Warning for...
  Southwestern Anderson County in central Kentucky...
  Northern Mercer County in central Kentucky...
  Northeastern Washington County in central Kentucky...

* Until 500 PM EDT.

* At 151 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. 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...
  Harrodsburg, Ballard, Dugansville, Tablow, Duncan, Seaville, 
  Terrapin, Mayo, Ashbrook and Cardwell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3789 8519 3789 8518 3789 8517 3789 8516
      3789 8515 3798 8517 3800 8504 3794 8490
      3783 8474 3778 8491 3784 8515 3788 8520
      3790 8520 3790 8519

FLASH FLOOD...RADAR INDICATED

$$

JML

1 follow-up statement

622 
WGUS73 KLMK 012054
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
454 PM EDT Thu Jul 1 2021

KYC005-167-229-012104-
/O.CAN.KLMK.FF.W.0032.000000T0000Z-210701T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Anderson KY-Mercer KY-Washington KY-
454 PM EDT Thu Jul 1 2021

...FLASH FLOOD WARNING FOR SOUTHWESTERN ANDERSON, NORTHERN MERCER 
AND NORTHEASTERN WASHINGTON COUNTIES HAS BEEN REPLACED WITH A FLOOD 
WARNING...

LAT...LON 3789 8519 3789 8518 3789 8517 3789 8516
      3789 8515 3798 8517 3800 8504 3794 8490
      3783 8474 3778 8491 3784 8515 3788 8520
      3790 8520 3790 8519

$$

BTN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 11:07 PM EDT	Special Weather Statement	LMK	Fayette, Jessamine	23 min
Jun 30, 11:28 PM EDT	Special Weather Statement	LMK	Clark	47 min
Jun 30, 11:36 PM EDT	Special Weather Statement	LMK	Bourbon	39 min
Jul 1, 12:07 AM EDT	Special Weather Statement	LMK	Nicholas	23 min
Jul 1, 12:12 AM EDT	Special Weather Statement	LMK	Lincoln	33 min
Jul 1, 3:57 AM EDT	Flash Flood Watch	LMK	Adair, Anderson, Bourbon, Boyle, Bullitt, Casey and 24 more	16 hr
Jul 1, 7:36 AM EDT	Areal Flood Advisory	LMK	Clark, Fayette, Jessamine	3 hr
Jul 1, 8:28 AM EDT	Flash Flood Warning	LMK	Clark, Fayette, Jessamine	7 hr
Jul 1, 9:00 AM EDT	Areal Flood Advisory	LMK	Boyle, Garrard, Jessamine, Mercer	3 hr
Jul 1, 9:33 AM EDT	Flash Flood Warning	LMK	Clark, Garrard, Jessamine, Madison, Mercer	6 hr
Jul 1, 11:47 AM EDT	Areal Flood Advisory	LMK	Jefferson	3 hr
Jul 1, 11:55 AM EDT	Flash Flood Warning	LMK	Boyle, Marion, Mercer, Washington	4 hr
Jul 1, 12:22 PM EDT	Areal Flood Advisory	LMK	Bullitt, Jefferson, Spencer	3 hr
Jul 1, 12:31 PM EDT	Flash Flood Warning	LMK	Bullitt, Jefferson, Spencer	3 hr
Jul 1, 12:51 PM EDT	Areal Flood Advisory	LMK	Garrard, Lincoln, Madison	4 hr
Jul 1, 1:05 PM EDT	Areal Flood Advisory	LMK	Anderson, Mercer, Spencer, Washington	3 hr
Jul 1, 1:18 PM EDT	Areal Flood Advisory	LMK	Bullitt, Nelson, Spencer	3 hr
Jul 1, 2:17 PM EDT	Flash Flood Warning	LMK	Garrard, Lincoln, Madison	3 hr
Jul 1, 3:23 PM EDT	Areal Flood Warning	LMK	Clark, Fayette, Jessamine	2 hr
Jul 1, 3:26 PM EDT	Areal Flood Warning	LMK	Clark, Garrard, Jessamine, Madison, Mercer	3 hr
Jul 1, 3:39 PM EDT	Areal Flood Warning	LMK	Boyle, Marion, Mercer, Washington	3 hr
Jul 1, 3:42 PM EDT	Areal Flood Warning	LMK	Bullitt, Jefferson, Spencer	2 hr
Jul 1, 4:54 PM EDT	Areal Flood Warning	LMK	Anderson, Mercer, Washington	97 min
Jul 1, 6:43 PM EDT	River Flood Warning	LMK	Bourbon	28 hr

Nearby

Flash Flood Warnings in Kentucky, 2021 Every 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.