Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 13, NWS Jackson, KY

April 8, 2021Jackson County, Laurel County, Rockcastle County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Apr 8, 2021, 4:27 PM EDT for Jackson County, Laurel County, Rockcastle County, Kentucky. It was in force for 33 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, 4:27 PM EDT (20:27 UTC)
Expired
Apr 8, 2021, 5:00 PM EDT
In force
33 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Jackson County, KY, Laurel County, KY, Rockcastle County, KY

The radar

The Jackson,KY radar (KJKL), 59 km from the middle of the area, began a volume at 20:30 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.5 hours before the alert went out and 219 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2021-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 32 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2021-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

285 
WUUS53 KJKL 082027
SVRJKL
KYC109-125-203-082100-
/O.NEW.KJKL.SV.W.0013.210408T2027Z-210408T2100Z/

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

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  North central Laurel County in south central Kentucky...
  Jackson County in southeastern Kentucky...
  East central Rockcastle County in south central Kentucky...

* Until 500 PM EDT.

* At 426 PM EDT, a severe thunderstorm was located over Horse Lick,
  or 10 miles east of Mount Vernon, moving northeast at 30 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...
  McKee, Carico, Donaro, Turkey Foot, Robinet, Olin, Shop Branch,
  Mummie, Waneta, Privett, Bradshaw and Horse Lick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3757 8401 3758 8397 3757 8394 3753 8389
      3749 8388 3748 8389 3744 8384 3740 8382
      3739 8382 3725 8419 3735 8425
TIME...MOT...LOC 2026Z 232DEG 28KT 3734 8416 

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

DJ
2 follow-up statements
295 
WWUS53 KJKL 082043
SVSJKL

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

KYC125-203-082052-
/O.CAN.KJKL.SV.W.0013.000000T0000Z-210408T2100Z/
Laurel KY-Rockcastle KY-
443 PM EDT Thu Apr 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL LAUREL AND EAST
CENTRAL ROCKCASTLE 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 3757 8401 3758 8397 3757 8394 3753 8389
      3749 8388 3748 8389 3744 8384 3740 8382
      3739 8382 3734 8407 3742 8414
TIME...MOT...LOC 2042Z 232DEG 28KT 3742 8403 

$$

KYC109-082100-
/O.CON.KJKL.SV.W.0013.000000T0000Z-210408T2100Z/
Jackson KY-
443 PM EDT Thu Apr 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR CENTRAL JACKSON COUNTY...

At 442 PM EDT, a severe thunderstorm was located over Hurley, or over
McKee, moving northeast at 30 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...
McKee, New Zion, Turkey Foot, Green Hall, Collingsworth, Shop Branch,
Mummie, Foxtown, Waneta, Privett, Bradshaw and Elian.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3757 8401 3758 8397 3757 8394 3753 8389
      3749 8388 3748 8389 3744 8384 3740 8382
      3739 8382 3734 8407 3742 8414
TIME...MOT...LOC 2042Z 232DEG 28KT 3742 8403 

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

HAL
293 
WWUS53 KJKL 082059
SVSJKL

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

KYC109-082109-
/O.EXP.KJKL.SV.W.0013.000000T0000Z-210408T2100Z/
Jackson KY-
459 PM EDT Thu Apr 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL JACKSON COUNTY WILL
EXPIRE AT 500 PM EDT...
                
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 will be allowed to expire.  However small hail
is still possible with this thunderstorm.

LAT...LON 3757 8401 3758 8397 3757 8394 3753 8389
      3749 8388 3748 8389 3744 8384 3740 8382
      3739 8382 3734 8407 3742 8414
TIME...MOT...LOC 2059Z 232DEG 28KT 3746 8397 

$$

HAL

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 2:17 PM EDTSpecial Weather StatementJKLWayne28 min
Apr 8, 3:26 PM EDTSpecial Weather StatementJKLPulaski, Rockcastle49 min
Apr 8, 3:54 PM EDTSevere Thunderstorm WarningJKLJackson, Laurel, Pulaski, Rockcastle36 min
Apr 8, 4:31 PM EDTSpecial Weather StatementJKLPulaski29 min
Apr 8, 5:07 PM EDTSpecial Weather StatementJKLLee38 min
Apr 8, 5:17 PM EDTSpecial Weather StatementJKLMontgomery28 min
Apr 8, 5:20 PM EDTSevere Thunderstorm WarningJKLEstill, Lee, Powell, Wolfe25 min
Apr 8, 5:40 PM EDTSevere Thunderstorm WarningJKLMenifee, Morgan, Powell, Wolfe25 min
Apr 8, 5:50 PM EDTSevere Thunderstorm WarningJKLEstill, Lee, Powell, Wolfe25 min
Apr 8, 5:56 PM EDTSevere Thunderstorm WarningJKLLaurel, McCreary, Pulaski, Whitley49 min
Apr 8, 6:02 PM EDTSevere Thunderstorm WarningJKLLaurel, McCreary, Pulaski, Wayne21 min
Apr 8, 6:14 PM EDTSevere Thunderstorm WarningJKLMenifee, Morgan, Powell, Wolfe31 min
Apr 8, 6:44 PM EDTSevere Thunderstorm WarningJKLClay, Jackson, Laurel, Owsley31 min
Apr 8, 6:51 PM EDTSevere Thunderstorm WarningJKLLaurel, Pulaski24 min
Apr 8, 6:58 PM EDTSevere Thunderstorm WarningJKLBell, Knox, Whitley35 min
Apr 8, 7:11 PM EDTSevere Thunderstorm WarningJKLBreathitt, Lee, Magoffin, Morgan, Wolfe49 min
Apr 8, 7:31 PM EDTSevere Thunderstorm WarningJKLClay, Laurel, Owsley29 min
Apr 8, 7:39 PM EDTSevere Thunderstorm WarningJKLBell51 min
Apr 8, 7:49 PM EDTSpecial Weather StatementJKLBreathitt26 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2021Every 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.