Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 80, NWS Jackson, KY

July 30, 2021Bell County, McCreary County, Whitley County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jul 30, 2021, 4:54 AM EDT for Bell County, McCreary County, Whitley County, Kentucky. It was in force for 51 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
Jul 30, 2021, 4:54 AM EDT (08:54 UTC)
Expired
Jul 30, 2021, 5:45 AM EDT
In force
51 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Bell County, KY, McCreary County, KY, Whitley County, KY

The radar

The Knoxville radar (KMRX), 105 km from the middle of the area, began a volume at 08:53 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
Jul 30, 4:54 AM EDTTSTM WND DMG1 E Parkers Lake, KYMCCREARY COUNTY DISPATCH REPORTED TREES DOWN ON HWY 90 IN THE VICINITY OF VANOVER RIDGE RD. TIME ESTIMATED FROM RADAR.

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

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 8.9 hours before the alert went out and 217 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, Nashville Metro, TN at 00:00Z on 2021-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1874 joules per kilogram.LCLLFCEL10008507005003002001001 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, Nashville Metro, TN at 00:00Z on 2021-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
1874 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1447 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

806 
WUUS53 KJKL 300854
SVRJKL
KYC013-147-235-300945-
/O.NEW.KJKL.SV.W.0080.210730T0854Z-210730T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
454 AM EDT Fri Jul 30 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Southwestern Bell County in southeastern Kentucky...
  McCreary County in south central Kentucky...
  Whitley County in south central Kentucky...

* Until 545 AM EDT.

* At 453 AM EDT, a severe thunderstorm was located over Emlyn, or
  over Williamsburg, moving southeast at 30 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Mountain Ash around 500 AM EDT.
  Saxton around 505 AM EDT.
  Lot around 510 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3660 8441 3679 8462 3682 8458 3684 8459
      3685 8457 3686 8459 3691 8449 3695 8422
      3675 8396 3672 8395 3669 8389 3659 8375
TIME...MOT...LOC 0853Z 334DEG 26KT 3671 8413 

HAIL...0.88IN
WIND...60MPH
 
$$

GREIF
3 follow-up statements
883 
WWUS53 KJKL 300911
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
511 AM EDT Fri Jul 30 2021

KYC013-147-235-300945-
/O.CON.KJKL.SV.W.0080.000000T0000Z-210730T0945Z/
Bell KY-McCreary KY-Whitley KY-
511 AM EDT Fri Jul 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM EDT
FOR SOUTHWESTERN BELL...CENTRAL MCCREARY AND SOUTHERN WHITLEY
COUNTIES...

At 511 AM EDT, a severe thunderstorm was located over Marshes Siding,
or over Whitley City, moving southeast at 30 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
  Pine Knot, Hollyhill, Ayers and Zion Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3691 8448 3675 8427 3674 8406 3659 8375
      3660 8441 3679 8462 3682 8458 3684 8459
      3685 8457 3686 8459 3691 8449
TIME...MOT...LOC 0911Z 310DEG 26KT 3674 8447 

HAIL...0.88IN
WIND...60MPH
 
$$

GREIF
762 
WWUS53 KJKL 300926
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
526 AM EDT Fri Jul 30 2021

KYC013-147-235-300945-
/O.CON.KJKL.SV.W.0080.000000T0000Z-210730T0945Z/
Bell KY-McCreary KY-Whitley KY-
526 AM EDT Fri Jul 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM EDT
FOR SOUTHWESTERN BELL...SOUTHEASTERN MCCREARY AND SOUTHERN WHITLEY
COUNTIES...

At 526 AM EDT, a severe thunderstorm was located over Strunk, or near
Whitley City, moving southeast at 30 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Whitley City, Ayers, Marshes Siding, Frakes, Fonde, Zion Hill,
Wilkerson, Stearns, Red Ash, Lot, Pearl and Pine Knot.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3686 8459 3687 8457 3665 8434 3666 8392
      3659 8383 3660 8441 3679 8462 3682 8458
      3684 8459 3685 8457
TIME...MOT...LOC 0926Z 334DEG 26KT 3664 8441 

HAIL...0.88IN
WIND...60MPH
 
$$

GREIF
976 
WWUS53 KJKL 300935
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
535 AM EDT Fri Jul 30 2021

KYC013-147-235-300945-
/O.EXP.KJKL.SV.W.0080.000000T0000Z-210730T0945Z/
Bell KY-McCreary KY-Whitley KY-
535 AM EDT Fri Jul 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BELL...
SOUTHEASTERN MCCREARY AND SOUTHERN WHITLEY COUNTIES WILL EXPIRE AT
545 AM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds and heavy rain are still
possible with this thunderstorm.

LAT...LON 3686 8459 3687 8457 3665 8434 3666 8392
      3659 8383 3660 8441 3679 8462 3682 8458
      3684 8459 3685 8457
TIME...MOT...LOC 0935Z 334DEG 26KT 3658 8437 

$$

GREIF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 9:55 PM EDTSpecial Weather StatementJKLRowan35 min
Jul 29, 10:03 PM EDTSevere Thunderstorm WarningJKLRowan27 min
Jul 29, 10:25 PM EDTSevere Thunderstorm WarningJKLElliott, Rowan35 min
Jul 29, 10:44 PM EDTSevere Thunderstorm WarningJKLElliott, Morgan, Rowan31 min
Jul 29, 10:53 PM EDTAreal Flood AdvisoryJKLElliott, Fleming, Rowan3 hr
Jul 29, 11:15 PM EDTSpecial Weather StatementJKLElliott, Johnson, Magoffin, Morgan, Wolfe30 min
Jul 29, 11:23 PM EDTSpecial Weather StatementJKLBath, Fleming, Rowan37 min
Jul 29, 11:32 PM EDTAreal Flood AdvisoryJKLBath, Elliott, Fleming, Morgan, Rowan3 hr
Jul 29, 11:43 PM EDTFlash Flood WarningJKLBath, Fleming, Menifee, Morgan, Rowan4 hr
Jul 30, 12:23 AM EDTSpecial Weather StatementJKLBreathitt, Wolfe52 min
Jul 30, 12:24 AM EDTFlash Flood WarningJKLBath, Magoffin, Menifee, Montgomery, Morgan, Wolfe4 hr
Jul 30, 12:25 AM EDTSpecial Weather StatementJKLMenifee, Montgomery, Wolfe50 min
Jul 30, 12:36 AM EDTSevere Thunderstorm WarningJKLBreathitt, Knott, Magoffin, Perry39 min
Jul 30, 12:45 AM EDTSpecial Weather StatementJKLPerry45 min
Jul 30, 12:59 AM EDTFlash Flood WarningJKLBreathitt, Magoffin4 hr
Jul 30, 1:05 AM EDTSpecial Weather StatementJKLBreathitt, Knott40 min
Jul 30, 1:26 AM EDTSpecial Weather StatementJKLLeslie, Perry49 min
Jul 30, 1:30 AM EDTSevere Thunderstorm WarningJKLLeslie, Perry45 min
Jul 30, 1:33 AM EDTFlash Flood WarningJKLBreathitt, Estill, Lee, Montgomery, Owsley, Perry and 2 more4 hr
Jul 30, 1:37 AM EDTSpecial Weather StatementJKLMontgomery, Powell53 min
Jul 30, 1:55 AM EDTFlash Flood WarningJKLLeslie, Perry4 hr
Jul 30, 2:06 AM EDTSpecial Weather StatementJKLHarlan39 min
Jul 30, 2:08 AM EDTSpecial Weather StatementJKLEstill, Jackson52 min
Jul 30, 2:23 AM EDTSpecial Weather StatementJKLBell, Clay52 min
Jul 30, 2:35 AM EDTFlash Flood WarningJKLClay, Estill, Jackson, Lee, Leslie, Owsley4 hr
Jul 30, 2:41 AM EDTSpecial Weather StatementJKLJackson, Laurel, Rockcastle49 min
Jul 30, 3:04 AM EDTSpecial Weather StatementJKLBell, Clay, Knox41 min
Jul 30, 3:12 AM EDTSpecial Weather StatementJKLPulaski, Rockcastle48 min
Jul 30, 3:23 AM EDTAreal Flood AdvisoryJKLClay, Jackson, Laurel, Rockcastle4 hr
Jul 30, 3:30 AM EDTAreal Flood WarningJKLBath, Fleming, Menifee, Morgan, Rowan6 hr
Jul 30, 3:32 AM EDTSpecial Weather StatementJKLKnox, Laurel43 min
Jul 30, 3:56 AM EDTSpecial Weather StatementJKLLaurel, McCreary, Pulaski, Whitley64 min
Jul 30, 4:03 AM EDTAreal Flood AdvisoryJKLLaurel, Pulaski4 hr
Jul 30, 4:11 AM EDTSevere Thunderstorm WarningJKLLaurel, McCreary, Pulaski, Rockcastle, Whitley49 min
Jul 30, 4:16 AM EDTTornado WarningJKLMcCreary, Whitley29 min
Jul 30, 4:18 AM EDTFlash Flood WarningJKLKnox, Laurel, Pulaski, Rockcastle, Whitley4 hr
Jul 30, 4:21 AM EDTAreal Flood WarningJKLBath, Magoffin, Menifee, Montgomery, Morgan, Wolfe3 hr
Jul 30, 4:44 AM EDTSpecial Weather StatementJKLMcCreary, Pulaski, Wayne, Whitley61 min
Jul 30, 4:54 AM EDTAreal Flood AdvisoryJKLMcCreary, Wayne, Whitley3 hr
Jul 30, 5:16 AM EDTAreal Flood WarningJKLBreathitt, Estill, Lee, Montgomery, Owsley, Powell and 1 more4 hr
Jul 30, 5:22 AM EDTSpecial Weather StatementJKLMcCreary, Wayne38 min
Jul 30, 6:35 AM EDTRiver Flood AdvisoryJKLEstill, Powell24 hr
Jul 30, 7:14 AM EDTAreal Flood WarningJKLBath, Menifee, Montgomery, Morgan, Wolfe4 hr
Jul 30, 7:58 AM EDTAreal Flood WarningJKLKnox, Laurel, Pulaski, Rockcastle, Whitley86 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.