Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 17, NWS Jackson, KY

April 8, 20214 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Apr 8, 2021, 5:56 PM EDT for 4 counties in Kentucky. It was in force for 49 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: Apr 8, 2021, 5:56 PM EDT (21:56 UTC)
Expired: Apr 8, 2021, 6:45 PM EDT
In force: 49 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Laurel County, KY, McCreary County, KY, Pulaski County, KY, Whitley County, KY

The radar

The Jackson,KY radar (KJKL), 89 km from the middle of the area, began a volume at 21:56 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 12:00Z, 9.9 hours before the alert went out and 246 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: 55 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 626 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 354 m²/s²
0-3 km storm-relative helicity: 375 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

924 
WUUS53 KJKL 082156
SVRJKL
KYC125-147-199-235-082245-
/O.NEW.KJKL.SV.W.0017.210408T2156Z-210408T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
556 PM EDT Thu Apr 8 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Laurel County in south central Kentucky...
  Southeastern Pulaski County in south central Kentucky...
  Northeastern McCreary County in south central Kentucky...
  Northwestern Whitley County in south central Kentucky...

* Until 645 PM EDT.

* At 556 PM EDT, a severe thunderstorm was located over Rockcastle
  Springs, or 14 miles southwest of London, moving northeast at 40
  mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  London, Fariston, Wood Creek Lake, Pittsburg, Langnau, Lily,
  Mcwhorter, Lamero, Huxley, Mount Victory, Atlanta and Bunch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3687 8429 3700 8446 3717 8430 3718 8427
      3719 8427 3731 8415 3731 8413 3733 8413
      3730 8410 3720 8394 3717 8397 3715 8394
      3711 8393
TIME...MOT...LOC 2156Z 224DEG 34KT 3701 8429 

HAIL...1.00IN
WIND...60MPH
 
$$

HAL

1 follow-up statement

072 
WWUS53 KJKL 082232
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
632 PM EDT Thu Apr 8 2021

KYC147-199-235-082242-
/O.CAN.KJKL.SV.W.0017.000000T0000Z-210408T2245Z/
Pulaski KY-McCreary KY-Whitley KY-
632 PM EDT Thu Apr 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PULASKI...
NORTHEASTERN MCCREARY AND NORTHWESTERN WHITLEY COUNTIES IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3706 8405 3717 8420 3731 8411 3730 8410
      3720 8394 3717 8397 3715 8394
TIME...MOT...LOC 2232Z 223DEG 32KT 3723 8403 

$$

KYC125-082245-
/O.CON.KJKL.SV.W.0017.000000T0000Z-210408T2245Z/
Laurel KY-
632 PM EDT Thu Apr 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR CENTRAL LAUREL COUNTY...

At 632 PM EDT, a severe thunderstorm was located over Atlanta, or 7
miles northeast of London, moving northeast at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
London, East Bernstadt, Maplesville, Fariston, Pittsburg, Langnau,
Levi Jackson S.P., Hare, Mcwhorter, Atlanta, Carmichael and Sublimity
City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3706 8405 3717 8420 3731 8411 3730 8410
      3720 8394 3717 8397 3715 8394
TIME...MOT...LOC 2232Z 223DEG 32KT 3723 8403 

HAIL...1.00IN
WIND...60MPH
 
$$

HAL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 2:17 PM EDT	Special Weather Statement	JKL	Wayne	28 min
Apr 8, 3:26 PM EDT	Special Weather Statement	JKL	Pulaski, Rockcastle	49 min
Apr 8, 3:54 PM EDT	Severe Thunderstorm Warning	JKL	Jackson, Laurel, Pulaski, Rockcastle	36 min
Apr 8, 4:27 PM EDT	Severe Thunderstorm Warning	JKL	Jackson, Laurel, Rockcastle	33 min
Apr 8, 4:31 PM EDT	Special Weather Statement	JKL	Pulaski	29 min
Apr 8, 5:07 PM EDT	Special Weather Statement	JKL	Lee	38 min
Apr 8, 5:17 PM EDT	Special Weather Statement	JKL	Montgomery	28 min
Apr 8, 5:20 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Lee, Powell, Wolfe	25 min
Apr 8, 5:40 PM EDT	Severe Thunderstorm Warning	JKL	Menifee, Morgan, Powell, Wolfe	25 min
Apr 8, 5:50 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Lee, Powell, Wolfe	25 min
Apr 8, 6:02 PM EDT	Severe Thunderstorm Warning	JKL	Laurel, McCreary, Pulaski, Wayne	21 min
Apr 8, 6:14 PM EDT	Severe Thunderstorm Warning	JKL	Menifee, Morgan, Powell, Wolfe	31 min
Apr 8, 6:44 PM EDT	Severe Thunderstorm Warning	JKL	Clay, Jackson, Laurel, Owsley	31 min
Apr 8, 6:51 PM EDT	Severe Thunderstorm Warning	JKL	Laurel, Pulaski	24 min
Apr 8, 6:58 PM EDT	Severe Thunderstorm Warning	JKL	Bell, Knox, Whitley	35 min
Apr 8, 7:11 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Lee, Magoffin, Morgan, Wolfe	49 min
Apr 8, 7:31 PM EDT	Severe Thunderstorm Warning	JKL	Clay, Laurel, Owsley	29 min
Apr 8, 7:39 PM EDT	Severe Thunderstorm Warning	JKL	Bell	51 min
Apr 8, 7:49 PM EDT	Special Weather Statement	JKL	Breathitt	26 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2021 Every severe thunderstorm 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.