Alert archive / Kentucky / Special Weather Statements in 2021

Special Weather Statement, NWS Louisville, KY

July 6, 2021Jefferson County, Kentucky

NWS Louisville, KY issued this special weather statement at Jul 6, 2021, 4:21 PM EDT for Jefferson County, Kentucky. It was in force for 24 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: Jul 6, 2021, 4:21 PM EDT (20:21 UTC)
Expired: Jul 6, 2021, 4:45 PM EDT
In force: 24 min
Issued by: NWS Louisville, KY

County Jefferson County, KY

The radar

The Louisville radar (KLVX), 47 km from the middle of the area, began a volume at 20:22 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, 8.4 hours before the alert went out and 200 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: 1401 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1022 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

751 
WWUS83 KLMK 062021
SPSLMK

Special Weather Statement
National Weather Service Louisville KY
421 PM EDT Tue Jul 6 2021

KYZ030-062045-
Jefferson-
421 PM EDT Tue Jul 6 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN JEFFERSON COUNTY...

At 421 PM EDT, a strong thunderstorm was located over Whipps
Millgate. The storm is nearly stationary.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Louisville, Jeffersontown, St. Matthews, Lyndon, Middletown, Douglass
Hills, Prospect, Hurstbourne, Graymoor-Devondale and Windy Hills.

LAT...LON 3835 8559 3834 8558 3832 8553 3826 8546
      3820 8553 3819 8570 3828 8571 3830 8567
      3833 8565 3836 8562
TIME...MOT...LOC 2021Z 225DEG 2KT 3827 8557 

$$

DM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 12:32 PM EDT	Areal Flood Advisory	LMK	Fayette	3 hr
Jul 6, 1:40 PM EDT	Special Weather Statement	LMK	Hardin	20 min
Jul 6, 2:05 PM EDT	Special Weather Statement	LMK	Hardin	25 min
Jul 6, 2:17 PM EDT	Special Weather Statement	LMK	Nelson	28 min
Jul 6, 2:20 PM EDT	Severe Thunderstorm Warning	LMK	Breckinridge	25 min
Jul 6, 2:44 PM EDT	Severe Thunderstorm Warning	LMK	Breckinridge	31 min
Jul 6, 2:45 PM EDT	Special Weather Statement	LMK	Bullitt, Nelson	30 min
Jul 6, 2:51 PM EDT	Special Weather Statement	LMK	Mercer	24 min
Jul 6, 3:04 PM EDT	Severe Thunderstorm Warning	LMK	Anderson, Mercer, Woodford	26 min
Jul 6, 3:25 PM EDT	Severe Thunderstorm Warning	LMK	Anderson, Mercer, Woodford	35 min
Jul 6, 3:56 PM EDT	Special Weather Statement	LMK	Jefferson	34 min
Jul 6, 3:56 PM EDT	Special Weather Statement	LMK	Woodford	34 min
Jul 6, 4:25 PM EDT	Special Weather Statement	LMK	Scott	20 min
Jul 6, 4:26 PM EDT	Special Weather Statement	LMK	Nicholas	19 min
Jul 6, 4:34 PM EDT	Severe Thunderstorm Warning	LMK	Scott	26 min
Jul 6, 4:42 PM EDT	Special Weather Statement	LMK	Shelby	18 min
Jul 6, 4:46 PM EDT	Special Weather Statement	LMK	Washington	14 min
Jul 6, 4:49 PM EDT	Areal Flood Advisory	LMK	Scott	116 min
Jul 6, 4:53 PM EDT	Special Weather Statement	LMK	Nicholas	22 min
Jul 6, 4:57 PM EDT	Special Weather Statement	LMK	Shelby	18 min
Jul 6, 5:00 PM EDT	Special Weather Statement	LMK	Scott	30 min
Jul 6, 5:03 PM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Harrison, Nicholas	27 min
Jul 6, 5:16 PM EDT	Special Weather Statement	LMK	Shelby	14 min
Jul 6, 5:19 PM EDT	Areal Flood Advisory	LMK	Bourbon, Nicholas	90 min
Jul 6, 5:25 PM EDT	Special Weather Statement	LMK	Oldham	20 min
Jul 6, 5:29 PM EDT	Special Weather Statement	LMK	Henry	16 min
Jul 6, 5:44 PM EDT	Special Weather Statement	LMK	Trimble	31 min
Jul 6, 3:20 PM EDT	Special Weather Statement	LMK	Floyd	25 min
Jul 6, 4:00 PM EDT	Special Weather Statement	LMK	Floyd	30 min
Jul 6, 4:37 PM EDT	Severe Thunderstorm Warning	LMK	Clark, Floyd	23 min
Jul 6, 4:59 PM EDT	Special Weather Statement	LMK	Clark	16 min
Jul 6, 5:14 PM EDT	Special Weather Statement	LMK	Clark	16 min
Jul 6, 5:34 PM EDT	Special Weather Statement	LMK	Clark	11 min
Jul 6, 5:46 PM EDT	Special Weather Statement	LMK	Orange, Scott, Washington	29 min
Jul 6, 6:10 PM EDT	Special Weather Statement	LMK	Jefferson	35 min
Jul 6, 6:21 PM EDT	Special Weather Statement	LMK	Orange	24 min
Jul 6, 6:43 PM EDT	Special Weather Statement	LMK	Jefferson	32 min

Nearby

Special Weather Statements in Kentucky, 2021 Every special weather statement 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.