Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 97, NWS Jackson, KY
NWS Jackson, KY issued this severe thunderstorm warning at Dec 6, 2021, 9:15 AM EST for 6 counties in Kentucky. It was in force for 30 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 6, 2021, 9:15 AM EST (14:15 UTC)
- Expired
- Dec 6, 2021, 9:45 AM EST
- In force
- 30 min
- Issued by
- NWS Jackson, KY
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clay County, KY, Harlan County, KY, Knox County, KY, Leslie County, KY, Letcher County, KY, Perry County, KY
The radar
The Jackson,KY radar (KJKL), 59 km from the middle of the area, began a volume at 14:15 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 6, 9:30 AM EST | TSTM WND DMG | Big Fork, KY | A TREE WAS BLOWN DOWN ALONG KY 3427 NEAR MM 3 AROUND 930 AM EST. |
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, 2.3 hours before the alert went out and 266 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 678 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
230
WUUS53 KJKL 061415
SVRJKL
KYC051-095-121-131-133-193-061445-
/O.NEW.KJKL.SV.W.0097.211206T1415Z-211206T1445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
915 AM EST Mon Dec 6 2021
The National Weather Service in JACKSON KY has issued a
* Severe Thunderstorm Warning for...
North central Harlan County in southeastern Kentucky...
East central Knox County in southeastern Kentucky...
Leslie County in southeastern Kentucky...
Southwestern Letcher County in southeastern Kentucky...
Southeastern Perry County in southeastern Kentucky...
Southeastern Clay County in southeastern Kentucky...
* Until 945 AM EST.
* At 915 AM EST, a severe thunderstorm was located over Queendale, or
13 miles southwest of Hyden, moving east at 60 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Essie around 920 AM EST.
Asher around 925 AM EST.
Causey around 930 AM EST.
Yeaddiss around 935 AM EST.
Other locations in the path of this severe thunderstorm include Slemp
and Ulvah.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3692 8369 3713 8366 3725 8307 3723 8307
3721 8305 3722 8304 3699 8299 3694 8353
3695 8359 3694 8357
TIME...MOT...LOC 1415Z 257DEG 50KT 3703 8355
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JP2 follow-up statements
935
WWUS53 KJKL 061432
SVSJKL
Severe Weather Statement
National Weather Service JACKSON KY
932 AM EST Mon Dec 6 2021
KYC121-061441-
/O.CAN.KJKL.SV.W.0097.000000T0000Z-211206T1445Z/
Knox KY-
932 AM EST Mon Dec 6 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL KNOX COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
Knox County. Therefore, the warning for Knox County has been
cancelled.
LAT...LON 3696 8357 3696 8359 3701 8356 3703 8345
3719 8335 3724 8313 3723 8310 3725 8307
3721 8305 3722 8304 3699 8299 3694 8353
TIME...MOT...LOC 1431Z 254DEG 50KT 3707 8329
$$
KYC051-095-131-133-193-061445-
/O.CON.KJKL.SV.W.0097.000000T0000Z-211206T1445Z/
Harlan KY-Leslie KY-Letcher KY-Perry KY-Clay KY-
932 AM EST Mon Dec 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM EST
FOR NORTH CENTRAL HARLAN...CENTRAL LESLIE...SOUTHWESTERN LETCHER...
SOUTHEASTERN PERRY AND SOUTHEASTERN CLAY COUNTIES...
At 931 AM EST, a severe thunderstorm was located over Causey, or 8
miles southeast of Hyden, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
This severe storm will be near...
Yeaddiss around 935 AM EST.
Other locations in the path of this severe thunderstorm include
Slemp, Ulvah and Bluefield.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3696 8357 3696 8359 3701 8356 3703 8345
3719 8335 3724 8313 3723 8310 3725 8307
3721 8305 3722 8304 3699 8299 3694 8353
TIME...MOT...LOC 1431Z 254DEG 50KT 3707 8329
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JP421
WWUS53 KJKL 061442
SVSJKL
Severe Weather Statement
National Weather Service JACKSON KY
942 AM EST Mon Dec 6 2021
KYC051-095-131-133-193-061452-
/O.EXP.KJKL.SV.W.0097.000000T0000Z-211206T1445Z/
Harlan KY-Leslie KY-Letcher KY-Perry KY-Clay KY-
942 AM EST Mon Dec 6 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL HARLAN...CENTRAL
LESLIE...SOUTHWESTERN LETCHER...SOUTHEASTERN PERRY AND SOUTHEASTERN
CLAY COUNTIES WILL EXPIRE AT 945 AM EST...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 3696 8357 3696 8359 3701 8356 3703 8345
3719 8335 3724 8313 3723 8310 3725 8307
3721 8305 3722 8304 3699 8299 3694 8353
TIME...MOT...LOC 1442Z 257DEG 50KT 3710 8314
$$
JPThe office that day
Everything else NWS Jackson, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 6, 8:03 AM EST | Special Weather Statement | JKL | Jackson, Laurel, McCreary, Owsley, Pulaski, Wayne | 27 min |
| Dec 6, 8:09 AM EST | Special Weather Statement | JKL | Breathitt, Johnson, Lee, Magoffin, Wolfe | 36 min |
| Dec 6, 8:32 AM EST | Special Weather Statement | JKL | Clay, Knox, Laurel, McCreary, Owsley, Whitley | 43 min |
| Dec 6, 8:43 AM EST | Special Weather Statement | JKL | Breathitt, Floyd, Johnson, Magoffin, Martin | 47 min |
| Dec 6, 9:00 AM EST | Severe Thunderstorm Warning | JKL | Bell, Clay, Knox, Leslie | 15 min |
| Dec 6, 9:11 AM EST | Special Weather Statement | JKL | Bell, Harlan, Knott, Leslie, Perry | 49 min |
| Dec 6, 9:28 AM EST | Special Weather Statement | JKL | Floyd, Martin, Pike | 47 min |
| Dec 6, 9:59 AM EST | Special Weather Statement | JKL | Harlan, Letcher | 46 min |
| Dec 6, 10:12 AM EST | Special Weather Statement | JKL | Pike | 33 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.