Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 29, NWS Jackson, KY
NWS Jackson, KY issued this severe thunderstorm warning at Apr 8, 2021, 8:56 PM EDT for Clay County, Knox County, Leslie County, Kentucky. It was in force for 30 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, 8:56 PM EDT (00:56 UTC)
- Expired
- Apr 8, 2021, 9:26 PM EDT
- In force
- 30 min
- Issued by
- NWS Jackson, KY
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Clay County, KY, Knox County, KY, Leslie County, KY
The radar
The Jackson,KY radar (KJKL), 76 km from the middle of the area, began a volume at 00:59 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 00:00Z, 0.9 hours before the alert went out and 265 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
- 4 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1313 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 181 m²/s²
- 0-3 km storm-relative helicity
- 216 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
209
WUUS53 KJKL 090056
SVRJKL
KYC051-121-131-090145-
/O.NEW.KJKL.SV.W.0029.210409T0056Z-210409T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
856 PM EDT Thu Apr 8 2021
The National Weather Service in JACKSON KY has issued a
* Severe Thunderstorm Warning for...
North central Knox County in southeastern Kentucky...
West central Leslie County in southeastern Kentucky...
Central Clay County in southeastern Kentucky...
* Until 945 PM EDT.
* At 855 PM EDT, a severe thunderstorm was located over Sprule, or 10
miles north of Barbourville, moving northeast at 35 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Manchester, Brightshade, Goose Rock, Barcreek, Jarvis, Cranes Nest,
Girdler, Jonsee, Herron, Ice Cliff, Park Valley and Cottongin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3698 8395 3700 8393 3701 8394 3703 8393
3703 8390 3705 8387 3707 8389 3709 8386
3710 8387 3732 8363 3711 8339 3690 8387
TIME...MOT...LOC 0055Z 234DEG 30KT 3701 8384
HAIL...1.50IN
WIND...60MPH
$$
HAL1 follow-up statement
726
WWUS53 KJKL 090126
SVSJKL
Severe Weather Statement
National Weather Service JACKSON KY
926 PM EDT Thu Apr 8 2021
KYC051-121-131-090136-
/O.CAN.KJKL.SV.W.0029.000000T0000Z-210409T0145Z/
Knox KY-Leslie KY-Clay KY-
926 PM EDT Thu Apr 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL KNOX...WEST
CENTRAL LESLIE AND CENTRAL CLAY COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
LAT...LON 3698 8395 3700 8393 3701 8394 3703 8393
3703 8390 3705 8387 3707 8389 3709 8386
3710 8387 3732 8363 3711 8339 3690 8387
TIME...MOT...LOC 0120Z 234DEG 30KT 3716 8357
$$
HALThe office that day
Everything else NWS Jackson, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 8:00 PM EDT | Severe Thunderstorm Warning | JKL | Breathitt, Clay, Owsley, Perry | 45 min |
| Apr 8, 8:19 PM EDT | Special Weather Statement | JKL | Laurel | 26 min |
| Apr 8, 8:24 PM EDT | Special Weather Statement | JKL | Magoffin | 36 min |
| Apr 8, 8:31 PM EDT | Special Weather Statement | JKL | Harlan | 29 min |
| Apr 8, 8:38 PM EDT | Severe Thunderstorm Warning | JKL | Johnson, Magoffin, Morgan | 30 min |
| Apr 8, 8:45 PM EDT | Severe Thunderstorm Warning | JKL | Breathitt, Knott, Magoffin | 45 min |
| Apr 8, 9:05 PM EDT | Special Weather Statement | JKL | Harlan | 40 min |
| Apr 8, 9:19 PM EDT | Special Weather Statement | JKL | Jackson | 26 min |
| Apr 8, 9:30 PM EDT | Special Weather Statement | JKL | Johnson | 30 min |
| Apr 8, 9:55 PM EDT | Special Weather Statement | JKL | Clay | 35 min |
| Apr 8, 10:01 PM EDT | Severe Thunderstorm Warning | JKL | Johnson, Martin | 29 min |
| Apr 8, 11:24 PM EDT | Special Weather Statement | JKL | Leslie | 21 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.