Alert archive / Kentucky / Areal Flood Warnings in 2021

Areal Flood Warning 21, NWS Louisville, KY

July 1, 20214 counties in Kentucky

NWS Louisville, KY issued this areal flood warning at Jul 1, 2021, 3:39 PM EDT for 4 counties in 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, 3:39 PM EDT (19:39 UTC)
Expired: Jul 1, 2021, 6:17 PM EDT
In force: 3 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Boyle County, KY, Marion County, KY, Mercer County, KY, Washington County, KY

The radar

The Louisville radar (KLVX), 99 km from the middle of the area, began a volume at 19:43 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, 7.7 hours before the alert went out and 216 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.

923 
WGUS43 KLMK 011939
FLWLMK

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Louisville KY
339 PM EDT Thu Jul 1 2021

KYC021-155-167-229-012230-
/O.NEW.KLMK.FA.W.0021.210701T1939Z-210701T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boyle KY-Marion KY-Mercer KY-Washington KY-
339 PM EDT Thu Jul 1 2021

The National Weather Service in Louisville has issued a

* Flood Warning for...
  Boyle County in central Kentucky...
  Northeastern Marion County in central Kentucky...
  Southwestern Mercer County in central Kentucky...
  Southern Washington County in central Kentucky...

* Until 630 PM EDT.

* At 339 PM EDT, local law enforcement reported flooding and closed 
  roadways in the warned area due to thunderstorms earlier in the 
  day. Light to moderate rain will persist for the next several 
  hours.

* Some locations that will experience flooding include...
  Danville, Springfield, Perryville, Loretto, Mackville, Pottsville, 
  Stewart, Jenkinsville, Texas and Brumfield.

Additional rainfall amounts of 0.5 to 1 inch are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3759 8521 3765 8539 3772 8536 3779 8514
      3779 8498 3777 8492 3769 8494 3772 8474
      3770 8474 3768 8470 3769 8469 3767 8468
      3766 8471 3766 8468 3764 8469 3765 8468
      3762 8467 3763 8469 3760 8471

$$

JML

1 follow-up statement

621 
WGUS83 KLMK 012217
FLSLMK

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

KYC021-155-167-229-012227-
/O.CAN.KLMK.FA.W.0021.000000T0000Z-210701T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boyle KY-Marion KY-Mercer KY-Washington KY-
617 PM EDT Thu Jul 1 2021

...FLOOD WARNING IS CANCELLED FOR BOYLE, NORTHEASTERN MARION, 
SOUTHWESTERN MERCER AND SOUTHERN WASHINGTON COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3759 8521 3765 8539 3772 8536 3779 8514
      3779 8498 3777 8492 3769 8494 3772 8474
      3770 8474 3768 8470 3769 8469 3767 8468
      3766 8471 3766 8468 3764 8469 3765 8468
      3762 8467 3763 8469 3760 8471

$$

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, 1:51 PM EDT	Flash Flood Warning	LMK	Anderson, Mercer, Washington	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, 3:42 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

Areal Flood Warnings in Kentucky, 2021 Every areal 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.