Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS Jackson, KY

April 8, 2021Bell County, Knox County, Whitley County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Apr 8, 2021, 6:58 PM EDT for Bell County, Knox County, Whitley County, Kentucky. It was in force for 35 min. 1 report 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, 6:58 PM EDT (22:58 UTC)
Expired: Apr 8, 2021, 7:33 PM EDT
In force: 35 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Bell County, KY, Knox County, KY, Whitley County, KY

The radar

The Knoxville radar (KMRX), 70 km from the middle of the area, began a volume at 22:58 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, 7:20 PM EDT	HAIL 0.7	2 Sw Chenoa, KY	REPORT RECEIVED VIA SOCIAL MEDIA. 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

Nashville Metro, TN (KBNA), launched 12:00Z, 11.0 hours before the alert went out and 249 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.

541 
WUUS53 KJKL 082258
SVRJKL
KYC013-121-235-082345-
/O.NEW.KJKL.SV.W.0022.210408T2258Z-210408T2345Z/

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

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Southern Bell County in southeastern Kentucky...
  South central Knox County in southeastern Kentucky...
  Southeastern Whitley County in south central Kentucky...

* Until 745 PM EDT.

* At 658 PM EDT, a severe thunderstorm was located 8 miles south of
  Zion Hill, or 8 miles north of La Follette, 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...
  Pineville, East Pineville, Wallsend, Ingram, Ponza, Straight Creek,
  Pruden, Cary, Wheeler, Binghamtown, Fourmile and Clear Creek
  Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3659 8409 3660 8410 3687 8374 3669 8356
      3658 8382
TIME...MOT...LOC 2258Z 235DEG 31KT 3649 8418 

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

HAL

1 follow-up statement

003 
WWUS53 KJKL 082333
SVSJKL

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

KYC013-121-235-082342-
/O.CAN.KJKL.SV.W.0022.000000T0000Z-210408T2345Z/
Bell KY-Knox KY-Whitley KY-
733 PM EDT Thu Apr 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BELL...SOUTH CENTRAL
KNOX AND SOUTHEASTERN WHITLEY COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

LAT...LON 3659 8409 3660 8410 3687 8374 3669 8356
      3658 8382
TIME...MOT...LOC 2325Z 235DEG 31KT 3666 8387 

$$

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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.