Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 85, NWS Jackson, KY

August 14, 2021Bell County, Harlan County, Leslie County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Aug 14, 2021, 8:09 PM EDT for Bell County, Harlan County, Leslie County, Kentucky. It was in force for 36 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 14, 2021, 8:09 PM EDT (00:09 UTC)
Expired
Aug 14, 2021, 8:45 PM EDT
In force
36 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Bell County, KY, Harlan County, KY, Leslie County, KY

The radar

The Jackson,KY radar (KJKL), 75 km from the middle of the area, began a volume at 00:09 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

TimeReportWhereRemark
Aug 14, 8:17 PM EDTTSTM WND DMGBledsoe, KYFEW TREES DOWN IN THE BLEDSOE AREA NEAR THE LESLIE COUNTY LINE. TIME ESTIMATED BY RADAR.

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 00:00Z, 0.2 hours before the alert went out and 280 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 00:00Z on 2021-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2021-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -33 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1475 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-33 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

763 
WUUS53 KJKL 150009
SVRJKL
KYC013-095-131-150045-
/O.NEW.KJKL.SV.W.0085.210815T0009Z-210815T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
809 PM EDT Sat Aug 14 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Northwestern Harlan County in southeastern Kentucky...
  Northeastern Bell County in southeastern Kentucky...
  Southern Leslie County in southeastern Kentucky...

* Until 845 PM EDT.

* At 808 PM EDT, a severe thunderstorm was located over Baxter, or
  near Harlan, moving northwest at 20 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.

* This severe thunderstorm will be near...
  Bledsoe around 820 PM EDT.
  Spruce Pine around 825 PM EDT.

Other locations in the path of this severe thunderstorm include
Warbranch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3692 8356 3694 8353 3694 8351 3696 8351
      3709 8335 3688 8316 3677 8334
TIME...MOT...LOC 0008Z 136DEG 16KT 3690 8333 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

FISHER
2 follow-up statements
898 
WWUS53 KJKL 150016
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
816 PM EDT Sat Aug 14 2021

KYC013-095-131-150045-
/O.CON.KJKL.SV.W.0085.000000T0000Z-210815T0045Z/
Harlan KY-Bell KY-Leslie KY-
816 PM EDT Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR NORTHWESTERN HARLAN...NORTHEASTERN BELL AND SOUTHERN LESLIE
COUNTIES...

At 816 PM EDT, a severe thunderstorm was located over Bledsoe, or
near Harlan, moving northwest at 15 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.

This severe storm will be near...
  Bledsoe around 820 PM EDT.

Other locations in the path of this severe thunderstorm include
Spruce Pine and Warbranch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3692 8356 3694 8353 3694 8351 3696 8351
      3709 8335 3688 8316 3677 8334
TIME...MOT...LOC 0016Z 133DEG 14KT 3691 8335 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

FISHER
366 
WWUS53 KJKL 150041
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
841 PM EDT Sat Aug 14 2021

KYC013-095-131-150051-
/O.EXP.KJKL.SV.W.0085.000000T0000Z-210815T0045Z/
Harlan KY-Bell KY-Leslie KY-
841 PM EDT Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HARLAN...
NORTHEASTERN BELL AND SOUTHERN LESLIE COUNTIES WILL EXPIRE AT 845 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 heavy rain
is still possible with this thunderstorm.

LAT...LON 3692 8356 3694 8353 3694 8351 3696 8351
      3709 8335 3688 8316 3677 8334
TIME...MOT...LOC 0041Z 136DEG 16KT 3698 8343 

$$

FISHER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 8:04 PM EDTSpecial Weather StatementJKLBell, Harlan41 min
Aug 14, 8:14 PM EDTFlash Flood WarningJKLMcCreary, Pulaski, Wayne91 min
Aug 14, 8:28 PM EDTSevere Thunderstorm WarningJKLBell47 min
Aug 14, 8:43 PM EDTSpecial Weather StatementJKLMcCreary47 min
Aug 14, 9:13 PM EDTFlash Flood WarningJKLMcCreary2 hr
Aug 14, 9:31 PM EDTSpecial Weather StatementJKLWhitley44 min
Aug 14, 9:47 PM EDTSpecial Weather StatementJKLHarlan, Letcher43 min
Aug 14, 9:51 PM EDTSpecial Weather StatementJKLKnox39 min
Aug 14, 10:15 PM EDTSpecial Weather StatementJKLWhitley30 min
Aug 14, 10:31 PM EDTSpecial Weather StatementJKLLeslie, Letcher, Perry44 min
Aug 15, 4:35 PM EDTSpecial Weather StatementJKLWayne25 min
Aug 15, 6:00 PM EDTSpecial Weather StatementJKLPulaski45 min
Aug 15, 6:46 PM EDTAreal Flood AdvisoryJKLLaurel15 min
Aug 15, 7:01 PM EDTFlash Flood WarningJKLLaurel3 hr
Aug 15, 7:12 PM EDTSpecial Weather StatementJKLKnox, Whitley48 min
Aug 15, 7:15 PM EDTSpecial Weather StatementJKLLetcher, Pike45 min
Aug 15, 7:41 PM EDTAreal Flood AdvisoryJKLLetcher, Pike2 hr
Aug 15, 7:42 PM EDTAreal Flood AdvisoryJKLBell, Clay, Knox, Leslie, Whitley2 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.