Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 77, NWS Jackson, KY

July 30, 20214 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jul 30, 2021, 12:36 AM EDT for 4 counties in Kentucky. It was in force for 39 min. 2 reports 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, 12:36 AM EDT (04:36 UTC)
Expired: Jul 30, 2021, 1:15 AM EDT
In force: 39 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Breathitt County, KY, Knott County, KY, Magoffin County, KY, Perry County, KY

The radar

The Jackson,KY radar (KJKL), 22 km from the middle of the area, began a volume at 04:37 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
Jul 30, 12:38 AM EDT	TSTM WND DMG	Nws Office/Julian Carro, KY	TREE DOWN ON THE ROAD LEADING UP TO THE NWS JACKSON OFFICE. OTHER LARGE BRANCHES ALSO DOWN ALONG THE ROAD. TIME IS ESTIMATED BASED ON RADAR DATA.
Jul 30, 1:22 AM EDT	TSTM WND DMG	1 S Ned, KY	BREATHITT AND PERRY COUNTY DISPATCH REPORTED THAT A TREE WAS BLOWN DOWN ON TO KY-15 NEAR THE COUNTY LINE COMMUNITY CHURCH, BLOCKING ONE OF THE LANES.

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, 4.6 hours before the alert went out and 224 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2113 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 691 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 9.2

Open this sounding in Storm Lab

The text

As transmitted.

831 
WUUS53 KJKL 300436
SVRJKL
KYC025-119-153-193-300515-
/O.NEW.KJKL.SV.W.0077.210730T0436Z-210730T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
1236 AM EDT Fri Jul 30 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Northeastern Perry County in southeastern Kentucky...
  Northwestern Knott County in southeastern Kentucky...
  Central Breathitt County in southeastern Kentucky...
  Southern Magoffin County in southeastern Kentucky...

* Until 115 AM EDT.

* At 1236 AM EDT, a severe thunderstorm was located over Wilstacy, or
  near Jackson, moving southeast at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Hardshell around 1245 AM EDT.
  Noble around 1250 AM EDT.
  Buck around 1255 AM EDT.

Other locations in the path of this severe thunderstorm include
Talcum, Bearville and Ritchie.

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 3752 8342 3769 8318 3752 8289 3749 8291
      3748 8293 3748 8290 3724 8316
TIME...MOT...LOC 0436Z 316DEG 31KT 3754 8328 

HAIL...<.75IN
WIND...60MPH
 
$$

GREIF

4 follow-up statements

005 
WWUS53 KJKL 300446
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
1246 AM EDT Fri Jul 30 2021

KYC025-119-153-193-300515-
/O.CON.KJKL.SV.W.0077.000000T0000Z-210730T0515Z/
Perry KY-Knott KY-Breathitt KY-Magoffin KY-
1246 AM EDT Fri Jul 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR NORTHEASTERN PERRY...NORTHWESTERN KNOTT...CENTRAL BREATHITT AND
SOUTHEASTERN MAGOFFIN COUNTIES...

At 1246 AM EDT, a severe thunderstorm was located over Noble, or 11
miles southeast of Jackson, moving southeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

This severe storm will be near...
  Rowdy around 1250 AM EDT.
  Buck around 1255 AM EDT.

Other locations in the path of this severe thunderstorm include
Talcum, Bearville and Ritchie.

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 3748 8339 3766 8312 3752 8289 3749 8291
      3748 8293 3748 8290 3724 8316
TIME...MOT...LOC 0446Z 316DEG 31KT 3748 8320 

HAIL...<.75IN
WIND...60MPH
 
$$

GREIF

495 
WWUS53 KJKL 300455
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
1255 AM EDT Fri Jul 30 2021

KYC025-119-153-193-300515-
/O.CON.KJKL.SV.W.0077.000000T0000Z-210730T0515Z/
Perry KY-Knott KY-Breathitt KY-Magoffin KY-
1255 AM EDT Fri Jul 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR NORTHEASTERN PERRY...NORTHWESTERN KNOTT...SOUTHEASTERN BREATHITT
AND SOUTHEASTERN MAGOFFIN COUNTIES...

At 1255 AM EDT, a severe thunderstorm was located over Buck, or 9
miles northwest of Hindman, moving southeast at 35 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

This severe storm will be near...
  Talcum around 100 AM EDT.
  Bearville around 105 AM EDT.

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

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 3742 8334 3761 8309 3752 8289 3749 8291
      3748 8293 3748 8290 3724 8316
TIME...MOT...LOC 0455Z 316DEG 31KT 3742 8313 

HAIL...<.75IN
WIND...70MPH
 
$$

GREIF

173 
WWUS53 KJKL 300508
SVSJKL

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

KYC025-119-153-193-300515-
/O.CON.KJKL.SV.W.0077.000000T0000Z-210730T0515Z/
Perry KY-Knott KY-Breathitt KY-Magoffin KY-
108 AM EDT Fri Jul 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR NORTHEASTERN PERRY...NORTHWESTERN KNOTT...SOUTHEASTERN BREATHITT
AND SOUTHEASTERN MAGOFFIN COUNTIES...

At 108 AM EDT, a severe thunderstorm was located over Carrie, or over
Hindman, moving southeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of
northeastern Perry, northwestern Knott, southeastern Breathitt and
southeastern Magoffin Counties, including the following locations...
Dwarf.

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 3742 8334 3761 8309 3752 8289 3749 8291
      3748 8293 3748 8290 3724 8316
TIME...MOT...LOC 0508Z 316DEG 31KT 3734 8303 

HAIL...<.75IN
WIND...60MPH
 
$$

GREIF

395 
WWUS53 KJKL 300512
SVSJKL

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

KYC025-119-153-193-300522-
/O.EXP.KJKL.SV.W.0077.000000T0000Z-210730T0515Z/
Perry KY-Knott KY-Breathitt KY-Magoffin KY-
112 AM EDT Fri Jul 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PERRY...
NORTHWESTERN KNOTT...SOUTHEASTERN BREATHITT AND SOUTHEASTERN MAGOFFIN
COUNTIES WILL EXPIRE AT 115 AM 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 gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3742 8334 3761 8309 3752 8289 3749 8291
      3748 8293 3748 8290 3724 8316
TIME...MOT...LOC 0512Z 316DEG 31KT 3733 8301 

$$

GREIF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 9:55 PM EDT	Special Weather Statement	JKL	Rowan	35 min
Jul 29, 10:03 PM EDT	Severe Thunderstorm Warning	JKL	Rowan	27 min
Jul 29, 10:25 PM EDT	Severe Thunderstorm Warning	JKL	Elliott, Rowan	35 min
Jul 29, 10:44 PM EDT	Severe Thunderstorm Warning	JKL	Elliott, Morgan, Rowan	31 min
Jul 29, 10:53 PM EDT	Areal Flood Advisory	JKL	Elliott, Fleming, Rowan	3 hr
Jul 29, 11:15 PM EDT	Special Weather Statement	JKL	Elliott, Johnson, Magoffin, Morgan, Wolfe	30 min
Jul 29, 11:23 PM EDT	Special Weather Statement	JKL	Bath, Fleming, Rowan	37 min
Jul 29, 11:32 PM EDT	Areal Flood Advisory	JKL	Bath, Elliott, Fleming, Morgan, Rowan	3 hr
Jul 29, 11:43 PM EDT	Flash Flood Warning	JKL	Bath, Fleming, Menifee, Morgan, Rowan	4 hr
Jul 30, 12:23 AM EDT	Special Weather Statement	JKL	Breathitt, Wolfe	52 min
Jul 30, 12:24 AM EDT	Flash Flood Warning	JKL	Bath, Magoffin, Menifee, Montgomery, Morgan, Wolfe	4 hr
Jul 30, 12:25 AM EDT	Special Weather Statement	JKL	Menifee, Montgomery, Wolfe	50 min
Jul 30, 12:45 AM EDT	Special Weather Statement	JKL	Perry	45 min
Jul 30, 12:59 AM EDT	Flash Flood Warning	JKL	Breathitt, Magoffin	4 hr
Jul 30, 1:05 AM EDT	Special Weather Statement	JKL	Breathitt, Knott	40 min
Jul 30, 1:26 AM EDT	Special Weather Statement	JKL	Leslie, Perry	49 min
Jul 30, 1:30 AM EDT	Severe Thunderstorm Warning	JKL	Leslie, Perry	45 min
Jul 30, 1:33 AM EDT	Flash Flood Warning	JKL	Breathitt, Estill, Lee, Montgomery, Owsley, Perry and 2 more	4 hr
Jul 30, 1:37 AM EDT	Special Weather Statement	JKL	Montgomery, Powell	53 min
Jul 30, 1:55 AM EDT	Flash Flood Warning	JKL	Leslie, Perry	4 hr
Jul 30, 2:06 AM EDT	Special Weather Statement	JKL	Harlan	39 min
Jul 30, 2:08 AM EDT	Special Weather Statement	JKL	Estill, Jackson	52 min
Jul 30, 2:23 AM EDT	Special Weather Statement	JKL	Bell, Clay	52 min
Jul 30, 2:35 AM EDT	Flash Flood Warning	JKL	Clay, Estill, Jackson, Lee, Leslie, Owsley	4 hr
Jul 30, 2:41 AM EDT	Special Weather Statement	JKL	Jackson, Laurel, Rockcastle	49 min
Jul 30, 3:04 AM EDT	Special Weather Statement	JKL	Bell, Clay, Knox	41 min
Jul 30, 3:12 AM EDT	Special Weather Statement	JKL	Pulaski, Rockcastle	48 min
Jul 30, 3:23 AM EDT	Areal Flood Advisory	JKL	Clay, Jackson, Laurel, Rockcastle	4 hr
Jul 30, 3:30 AM EDT	Areal Flood Warning	JKL	Bath, Fleming, Menifee, Morgan, Rowan	6 hr
Jul 30, 3:32 AM EDT	Special Weather Statement	JKL	Knox, Laurel	43 min
Jul 30, 3:56 AM EDT	Special Weather Statement	JKL	Laurel, McCreary, Pulaski, Whitley	64 min
Jul 30, 4:03 AM EDT	Areal Flood Advisory	JKL	Laurel, Pulaski	4 hr
Jul 30, 4:11 AM EDT	Severe Thunderstorm Warning	JKL	Laurel, McCreary, Pulaski, Rockcastle, Whitley	49 min
Jul 30, 4:16 AM EDT	Tornado Warning	JKL	McCreary, Whitley	29 min
Jul 30, 4:18 AM EDT	Flash Flood Warning	JKL	Knox, Laurel, Pulaski, Rockcastle, Whitley	4 hr
Jul 30, 4:21 AM EDT	Areal Flood Warning	JKL	Bath, Magoffin, Menifee, Montgomery, Morgan, Wolfe	3 hr
Jul 30, 4:44 AM EDT	Special Weather Statement	JKL	McCreary, Pulaski, Wayne, Whitley	61 min
Jul 30, 4:54 AM EDT	Areal Flood Advisory	JKL	McCreary, Wayne, Whitley	3 hr
Jul 30, 4:54 AM EDT	Severe Thunderstorm Warning	JKL	Bell, McCreary, Whitley	51 min
Jul 30, 5:16 AM EDT	Areal Flood Warning	JKL	Breathitt, Estill, Lee, Montgomery, Owsley, Powell and 1 more	4 hr
Jul 30, 5:22 AM EDT	Special Weather Statement	JKL	McCreary, Wayne	38 min
Jul 30, 6:35 AM EDT	River Flood Advisory	JKL	Estill, Powell	24 hr
Jul 30, 7:14 AM EDT	Areal Flood Warning	JKL	Bath, Menifee, Montgomery, Morgan, Wolfe	4 hr
Jul 30, 7:58 AM EDT	Areal Flood Warning	JKL	Knox, Laurel, Pulaski, Rockcastle, Whitley	86 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2021 Every 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.