Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 99, NWS Jackson, KY

December 11, 20214 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Dec 11, 2021, 4:55 AM EST for 4 counties in 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: Dec 11, 2021, 4:55 AM EST (09:55 UTC)
Expired: Dec 11, 2021, 5:30 AM EST
In force: 35 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bath County, KY, Fleming County, KY, Menifee County, KY, Rowan County, KY

The radar

The Jackson,KY radar (KJKL), 81 km from the middle of the area, began a volume at 09:57 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
Dec 11, 5:20 AM EST	TSTM WND DMG	1 Nw Clearfield, KY	TREES WERE BLOWN DOWN ALONG HEIGHTS AVENUE WITHIN THE CITY OF MOREHEAD. ALSO SCAFFOLDING WAS BLOWN DOWN NEAR 200 FLEMINGSBURG ROAD. THE EVENT TIME IS RADAR ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 11, 2:27 AM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 9.9 hours before the alert went out and 128 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 519 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 431 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

403 
WUUS53 KJKL 110955
SVRJKL
KYC011-069-165-205-111030-
/O.NEW.KJKL.SV.W.0099.211211T0955Z-211211T1030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
455 AM EST Sat Dec 11 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Central Bath County in east central Kentucky...
  Northern Menifee County in east central Kentucky...
  Fleming County in east central Kentucky...
  Rowan County in east central Kentucky...

* Until 530 AM EST.

* At 454 AM EST, severe thunderstorms were located along a line
  extending from Pebble to Fagan, moving northeast at 90 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Goddard around 500 AM EST.
  Zilpo around 505 AM EST.
  Morehead around 510 AM EST.

Other locations in the path of these severe thunderstorms include
Vale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 AM EST for east central
Kentucky.

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

A Tornado Watch remains in effect until 900 AM EST for east central
Kentucky.

&&

LAT...LON 3843 8358 3840 8348 3838 8345 3840 8342
      3839 8340 3830 8333 3821 8330 3819 8326
      3815 8326 3801 8354 3806 8354 3830 8385
      3832 8384 3833 8385 3850 8360
TIME...MOT...LOC 0954Z 231DEG 79KT 3829 8374 3794 8370 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

GEERTSON

2 follow-up statements

249 
WWUS53 KJKL 111022
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
522 AM EST Sat Dec 11 2021

KYC011-165-111032-
/O.CAN.KJKL.SV.W.0099.000000T0000Z-211211T1030Z/
Bath KY-Menifee KY-
522 AM EST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BATH AND NORTHERN
MENIFEE COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 900 AM EST for east central
Kentucky.

LAT...LON 3843 8358 3840 8348 3838 8345 3840 8341
      3830 8333 3828 8333 3821 8330 3819 8326
      3815 8326 3811 8347 3814 8356 3829 8372
      3842 8357
TIME...MOT...LOC 1022Z 251DEG 50KT 3838 8341 3811 8356 

$$

KYC069-205-111030-
/O.CON.KJKL.SV.W.0099.000000T0000Z-211211T1030Z/
Fleming KY-Rowan KY-
522 AM EST Sat Dec 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 AM EST
FOR SOUTHEASTERN FLEMING AND ROWAN COUNTIES...

At 522 AM EST, severe thunderstorms were located along a line
extending from near Waltz to Midland, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
  Morehead, Crix and Elliottville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 AM EST for east central
Kentucky.

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 3843 8358 3840 8348 3838 8345 3840 8341
      3830 8333 3828 8333 3821 8330 3819 8326
      3815 8326 3811 8347 3814 8356 3829 8372
      3842 8357
TIME...MOT...LOC 1022Z 251DEG 50KT 3838 8341 3811 8356 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

GEERTSON

860 
WWUS53 KJKL 111031
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
531 AM EST Sat Dec 11 2021

KYC069-205-111041-
/O.EXP.KJKL.SV.W.0099.000000T0000Z-211211T1030Z/
Fleming KY-Rowan KY-
531 AM EST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FLEMING AND ROWAN
COUNTIES HAS EXPIRED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However gusty
winds are still possible with these thunderstorms.

A Tornado Watch remains in effect until 900 AM EST for east central
Kentucky.

LAT...LON 3843 8358 3840 8348 3838 8345 3840 8341
      3830 8333 3828 8333 3821 8330 3819 8326
      3815 8326 3811 8347 3814 8356 3829 8372
      3842 8357
TIME...MOT...LOC 1031Z 270DEG 79KT 3847 8326 3820 8341 

$$

GEERTSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 11, 4:45 AM EST	Severe Thunderstorm Warning	JKL	Bath, Estill, Menifee, Montgomery, Powell	30 min
Dec 11, 5:13 AM EST	Tornado Warning	JKL	Estill, Lee, Montgomery, Powell	17 min
Dec 11, 5:27 AM EST	Severe Thunderstorm Warning	JKL	Estill, Menifee, Montgomery, Morgan, Powell, Rowan and 1 more	48 min
Dec 11, 5:43 AM EST	Tornado Warning	JKL	Estill, Powell	32 min
Dec 11, 5:49 AM EST	Severe Thunderstorm Warning	JKL	McCreary, Pulaski, Wayne, Whitley	41 min
Dec 11, 5:56 AM EST	Tornado Warning	JKL	McCreary, Wayne	19 min
Dec 11, 6:08 AM EST	Areal Flood Advisory	JKL	Estill, Menifee, Montgomery, Powell	3 hr
Dec 11, 6:17 AM EST	Special Weather Statement	JKL	Elliott, Menifee, Morgan, Powell, Rowan	58 min
Dec 11, 6:30 AM EST	Severe Thunderstorm Warning	JKL	Clay, Knox, Laurel, McCreary, Pulaski, Whitley	30 min
Dec 11, 6:38 AM EST	Severe Thunderstorm Warning	JKL	Bath, Estill, Jackson, Menifee, Montgomery, Powell and 3 more	37 min
Dec 11, 6:53 AM EST	Tornado Warning	JKL	Knox, Whitley	22 min
Dec 11, 6:58 AM EST	Severe Thunderstorm Warning	JKL	Bell, Clay, Jackson, Knox, Laurel, Leslie and 4 more	32 min
Dec 11, 7:08 AM EST	Severe Thunderstorm Warning	JKL	Bath, Estill, Jackson, Lee, Menifee, Morgan and 4 more	37 min
Dec 11, 7:24 AM EST	Severe Thunderstorm Warning	JKL	Bell, Clay, Harlan, Knox, Leslie, Letcher and 2 more	51 min
Dec 11, 7:39 AM EST	Severe Thunderstorm Warning	JKL	Breathitt, Elliott, Lee, Magoffin, Morgan, Owsley and 2 more	36 min
Dec 11, 7:42 AM EST	Areal Flood Advisory	JKL	McCreary, Whitley	3 hr
Dec 11, 8:04 AM EST	Special Weather Statement	JKL	Johnson, Magoffin, Martin	26 min
Dec 11, 8:15 AM EST	Severe Thunderstorm Warning	JKL	Bell, Knox, Whitley	30 min
Dec 11, 8:20 AM EST	Flash Flood Warning	JKL	McCreary, Whitley	3 hr
Dec 11, 8:45 AM EST	Severe Thunderstorm Warning	JKL	Bell, Harlan, Knox, Leslie, Whitley	30 min
Dec 11, 9:14 AM EST	Areal Flood Warning	JKL	Powell	3 hr
Dec 11, 9:15 AM EST	Special Weather Statement	JKL	Bell, Harlan, Letcher, Pike	45 min
Dec 11, 9:57 AM EST	Special Weather Statement	JKL	Harlan	33 min
Dec 11, 12:06 PM EST	Special Weather Statement	JKL	Bath, Estill, Fleming, Jackson, Menifee, Montgomery and 3 more	39 min
Dec 11, 12:45 PM EST	Special Weather Statement	JKL	Bath, Elliott, Estill, Jackson, Lee, Menifee and 7 more	45 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.