Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 83, NWS Jackson, KY
NWS Jackson, KY issued this severe thunderstorm warning at Aug 7, 2021, 3:43 PM EDT for Harlan County, 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
- Aug 7, 2021, 3:43 PM EDT (19:43 UTC)
- Expired
- Aug 7, 2021, 4:13 PM EDT
- In force
- 30 min
- Issued by
- NWS Jackson, KY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Harlan County, KY
The radar
The Knoxville radar (KMRX), 80 km from the middle of the area, began a volume at 19:44 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 |
|---|---|---|---|
| Aug 7, 3:50 PM EDT | TSTM WND DMG | 1 W Gatun, KY | TREE DOWN ON HIGHWAY 421 AT MILE MARKER 18.5. |
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, 7.7 hours before the alert went out and 290 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
- 815 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 973 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
740
WUUS53 KJKL 071943
SVRJKL
KYC095-072030-
/O.NEW.KJKL.SV.W.0083.210807T1943Z-210807T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
343 PM EDT Sat Aug 7 2021
The National Weather Service in JACKSON KY has issued a
* Severe Thunderstorm Warning for...
Central Harlan County in southeastern Kentucky...
* Until 430 PM EDT.
* At 343 PM EDT, a severe thunderstorm was located over Putney, or
near Harlan, and is nearly stationary.
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...
Putney, Ages and Evarts.
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 3689 8339 3695 8331 3697 8326 3700 8323
3686 8297 3686 8299 3685 8301 3685 8307
3683 8310 3680 8310 3678 8313 3673 8322
TIME...MOT...LOC 1943Z 308DEG 4KT 3692 8325
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GREIF3 follow-up statements
792
WWUS53 KJKL 071956
SVSJKL
Severe Weather Statement
National Weather Service JACKSON KY
356 PM EDT Sat Aug 7 2021
KYC095-072030-
/O.CON.KJKL.SV.W.0083.000000T0000Z-210807T2030Z/
Harlan KY-
356 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR CENTRAL HARLAN COUNTY...
At 356 PM EDT, a severe thunderstorm was located over Putney, or near
Harlan, and is nearly stationary.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Evarts, Clovertown, Bobs Creek, Big Laurel, Black Bottom, Dizney,
Chevrolet, Louellen, Coxton, Short Town, Kenvir and Darkmont.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3687 8332 3699 8321 3686 8297 3686 8299
3685 8301 3685 8307 3683 8310 3680 8310
3678 8313 3673 8322 3678 8327
TIME...MOT...LOC 1956Z 308DEG 4KT 3691 8323
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GREIF527
WWUS53 KJKL 072007
SVSJKL
Severe Weather Statement
National Weather Service JACKSON KY
407 PM EDT Sat Aug 7 2021
KYC095-072030-
/O.CON.KJKL.SV.W.0083.000000T0000Z-210807T2030Z/
Harlan KY-
407 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR CENTRAL HARLAN COUNTY...
At 406 PM EDT, a severe thunderstorm was located over Putney, or 7
miles northeast of Harlan, and is nearly stationary.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Evarts, Bobs Creek, Black Mountain, Dizney, Bailey Creek, Verda,
Cranks, Short Town, Kenvir, Darkmont, Highsplint and Colts.
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 3687 8324 3696 8316 3688 8306 3686 8304
3686 8306 3685 8307 3683 8310 3680 8310
3678 8313 3673 8322 3679 8325
TIME...MOT...LOC 2006Z 308DEG 4KT 3690 8322
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GREIF350
WWUS53 KJKL 072013
SVSJKL
Severe Weather Statement
National Weather Service JACKSON KY
413 PM EDT Sat Aug 7 2021
KYC095-072022-
/O.CAN.KJKL.SV.W.0083.000000T0000Z-210807T2030Z/
Harlan KY-
413 PM EDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL HARLAN COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with this thunderstorm.
LAT...LON 3687 8324 3696 8316 3688 8306 3686 8304
3686 8306 3685 8307 3683 8310 3680 8310
3678 8313 3673 8322 3679 8325
TIME...MOT...LOC 2006Z 308DEG 4KT 3690 8321
$$
GREIFThe office that day
Everything else NWS Jackson, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 12:27 PM EDT | Special Weather Statement | JKL | Johnson | 33 min |
| Aug 7, 12:49 PM EDT | Areal Flood Advisory | JKL | Floyd, Johnson, Magoffin, Martin, Pike | 2 hr |
| Aug 7, 12:50 PM EDT | Special Weather Statement | JKL | Floyd | 40 min |
| Aug 7, 12:52 PM EDT | Severe Thunderstorm Warning | JKL | Breathitt, Floyd, Knott, Magoffin | 23 min |
| Aug 7, 1:22 PM EDT | Areal Flood Advisory | JKL | Knott, Perry | 2 hr |
| Aug 7, 1:36 PM EDT | Special Weather Statement | JKL | Martin | 24 min |
| Aug 7, 1:51 PM EDT | Special Weather Statement | JKL | Knott | 39 min |
| Aug 7, 2:17 PM EDT | Special Weather Statement | JKL | Pike | 43 min |
| Aug 7, 2:20 PM EDT | Special Weather Statement | JKL | Leslie, Letcher, Perry | 40 min |
| Aug 7, 2:28 PM EDT | Special Weather Statement | JKL | Letcher | 32 min |
| Aug 7, 2:41 PM EDT | Areal Flood Advisory | JKL | Letcher, Pike | 3 hr |
| Aug 7, 3:00 PM EDT | Special Weather Statement | JKL | Pike | 30 min |
| Aug 7, 3:33 PM EDT | Special Weather Statement | JKL | Harlan | 57 min |
| Aug 7, 3:34 PM EDT | Areal Flood Advisory | JKL | Harlan, Leslie, Perry | 3 hr |
| Aug 7, 4:09 PM EDT | Areal Flood Advisory | JKL | Harlan | 3 hr |
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.