Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 24, NWS Jackson, KY

April 8, 2021Clay County, Laurel County, Owsley County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Apr 8, 2021, 7:31 PM EDT for Clay County, Laurel County, Owsley County, Kentucky. It was in force for 29 min. 3 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: Apr 8, 2021, 7:31 PM EDT (23:31 UTC)
Expired: Apr 8, 2021, 8:00 PM EDT
In force: 29 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Clay County, KY, Laurel County, KY, Owsley County, KY

The radar

The Jackson,KY radar (KJKL), 63 km from the middle of the area, began a volume at 23:30 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
Apr 8, 7:33 PM EDT	HAIL 0.88	2 Ene Brock, KY	TRAINED SPOTTER REPORTED UP TO NICKEL-SIZED HAIL ALONG LANGLEY LANE. TIME ESTIMATED FROM RADAR.
Apr 8, 7:51 PM EDT	HAIL 0.7	Fall Rock, KY	PUBLIC REPORTED DIME-SIZED HAIL JUST SOUTH OF FALL ROCK.
Apr 8, 7:53 PM EDT	HAIL 1.25	Treadway, KY	CONVENIENCE STORE EMPLOYEE REPORTS QUARTER TO HALF DOLLAR SIZE HAIL AT INTERSECTION OF US 421 AND KY-11 NORTH OF FALL ROCK. HAIL LEFT DENTS IN A VEHICLE. TIME ESTIMATED FROM RADAR.

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, 11.5 hours before the alert went out and 241 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: 32 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 1630 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

575 
WUUS53 KJKL 082331
SVRJKL
KYC051-125-189-090000-
/O.NEW.KJKL.SV.W.0024.210408T2331Z-210409T0000Z/

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

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  East central Laurel County in south central Kentucky...
  West central Owsley County in southeastern Kentucky...
  Northwestern Clay County in southeastern Kentucky...

* Until 800 PM EDT.

* At 731 PM EDT, a severe thunderstorm was located over Portersburg,
  or 9 miles west of Manchester, moving northeast at 40 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  London, Manchester, Grace, Langnau, Lake, Fogertown, Treadway, Wild
  Cat, Urban, Bush, Chestnutburg and Benge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3716 8410 3725 8397 3725 8394 3726 8394
      3726 8390 3731 8388 3733 8383 3733 8379
      3734 8378 3737 8381 3738 8379 3719 8363
      3704 8399
TIME...MOT...LOC 2331Z 234DEG 36KT 3718 8393 

HAIL...1.25IN
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, 5:56 PM EDT	Severe Thunderstorm Warning	JKL	Laurel, McCreary, Pulaski, Whitley	49 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, 7:39 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.