Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 31, NWS Louisville, KY

July 1, 2021Bullitt County, Jefferson County, Spencer County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jul 1, 2021, 12:31 PM EDT for Bullitt County, Jefferson County, Spencer County, Kentucky. It was in force for 3 hr. 6 reports 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: Jul 1, 2021, 12:31 PM EDT (16:31 UTC)
Expired: Jul 1, 2021, 3:42 PM EDT
In force: 3 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Bullitt County, KY, Jefferson County, KY, Spencer County, KY

The radar

The Louisville radar (KLVX), 32 km from the middle of the area, began a volume at 16:31 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

Time	Report	Where	Remark
Jul 1, 1:00 PM EDT	FLASH FLOOD	1 Nw Hillview, KY	FLOODING OVER ROAD ON NORTH TRIANGLE LANE NEAR BLUE LICK RD.
Jul 1, 1:45 PM EDT	HEAVY RAIN 4.5	1 Se Brooks, KY	4.5 INCHES MEASURED BY A PRIVATE RAIN GAUGE IN BROOKS, KY IN NORTHERN BULLITT COUNTY.
Jul 1, 2:15 PM EDT	FLASH FLOOD	1 E Shively, KY	REPORT OF A VEHICLE UNDERWATER ON 7TH STREET AND BERRY BLVD.
Jul 1, 2:15 PM EDT	FLASH FLOOD	2 S Louisville, KY	FLOODING ON E BRANDEIS AVE. UNDER THE TRAIN OVERPASS CAUSING ROAD CLOSURE.
Jul 1, 2:20 PM EDT	HEAVY RAIN 3.3	2 E Taylorsville, KY	3.30 INCHES OF RAIN MEASURED FROM A PRIVATE RAIN GAUGE OFF CARRITHERS LANE IN TAYLORSVILLE.
Jul 1, 2:32 PM EDT	FLASH FLOOD	3 S Louisville, KY	FLOODING CAUSING ROAD CLOSURES AT S 4TH ST. AND S 3RD ST. UNDER THE TRAIN OVERPASSES NEAR THE UNIVERSITY OF LOUISVILLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.5 hours before the alert went out and 215 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.

752 
WGUS53 KLMK 011631
FFWLMK
KYC029-111-215-011930-
/O.NEW.KLMK.FF.W.0031.210701T1631Z-210701T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
1231 PM EDT Thu Jul 1 2021

The National Weather Service in Louisville has issued a

* Flash Flood Warning for...
  Northeastern Bullitt County in central Kentucky...
  Jefferson County in central Kentucky...
  Northwestern Spencer County in central Kentucky...

* Until 330 PM EDT.

* At 1231 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...
  Louisville, Jeffersonville, New Albany, Jeffersontown, St. 
  Matthews, Shively, Shepherdsville, Middletown, Douglass Hills and 
  Hurstbourne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3826 8584 3828 8582 3824 8555 3815 8544
      3811 8532 3800 8526 3800 8576 3816 8591
      3821 8588 3823 8585

FLASH FLOOD...RADAR INDICATED

$$

JML

2 follow-up statements

460 
WGUS53 KLMK 011831
FFWLMK
KYC029-111-215-012030-
/O.EXT.KLMK.FF.W.0031.000000T0000Z-210701T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Louisville has extended the

* Flash Flood Warning for...
  Northeastern Bullitt County in central Kentucky...
  Jefferson County in central Kentucky...
  Northwestern Spencer County in central Kentucky...

* Until 430 PM EDT.

* At 231 PM EDT, local law enforcement reported thunderstorms 
  producing heavy rain across the warned area, resulting in closed 
  roads and flooded roadways. Between 2 and 3.5 inches of rain have 
  fallen. Additional rainfall amounts of 0.5 to 1 inch are possible 
  in the warned area.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Law enforcement reported.

  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...
  Louisville, Jeffersonville, New Albany, Jeffersontown, St. 
  Matthews, Shively, Shepherdsville, Middletown, Douglass Hills and 
  Hurstbourne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3826 8584 3828 8582 3824 8555 3815 8544
      3811 8532 3800 8526 3800 8576 3816 8591
      3821 8588 3823 8585

FLASH FLOOD...OBSERVED

$$

JML

363 
WGUS73 KLMK 011942
FFSLMK

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

KYC029-111-215-011952-
/O.CAN.KLMK.FF.W.0031.000000T0000Z-210701T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bullitt KY-Jefferson KY-Spencer KY-
342 PM EDT Thu Jul 1 2021

...FLASH FLOOD WARNING FOR NORTHEASTERN BULLITT, JEFFERSON AND 
NORTHWESTERN SPENCER COUNTIES HAS BEEN REPLACED WITH A FLOOD 
WARNING...

LAT...LON 3826 8584 3828 8582 3824 8555 3815 8544
      3811 8532 3800 8526 3800 8576 3816 8591
      3821 8588 3823 8585

$$

JML

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, 12:51 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, 3:39 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.