Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 74, NWS Jackson, KY

July 29, 2021Rowan County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jul 29, 2021, 10:03 PM EDT for Rowan County, Kentucky. It was in force for 27 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 29, 2021, 10:03 PM EDT (02:03 UTC)
Expired: Jul 29, 2021, 10:30 PM EDT
In force: 27 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Rowan County, KY

The radar

The Jackson,KY radar (KJKL), 76 km from the middle of the area, began a volume at 02:03 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 29, 10:25 PM EDT	TSTM WND DMG	1 W Haldeman, KY	POWER LINES DOWN AS WELL AS A TREE DOWN ON AN OUTBUILDING NEAR THE INTERSECTION OF HWY-60 AND BRADLEY HOLLOW RD. TIME ESTIMATED BASED ON 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, 2.1 hours before the alert went out and 135 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.

692 
WUUS53 KJKL 300203
SVRJKL
KYC205-300230-
/O.NEW.KJKL.SV.W.0074.210730T0203Z-210730T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
1003 PM EDT Thu Jul 29 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Northeastern Rowan County in east central Kentucky...

* Until 1030 PM EDT.

* At 1003 PM EDT, a severe thunderstorm was located near Head of
  Grassy, or 10 miles northwest of Olive Hill, moving southeast at 30
  mph.

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

  SOURCE...Radar indicated.

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

* This severe thunderstorm will remain over mainly rural areas of
  northeastern Rowan County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

&&

LAT...LON 3835 8337 3832 8336 3830 8333 3828 8333
      3827 8332 3821 8330 3821 8329 3820 8327
      3819 8326 3819 8324 3815 8328 3836 8347
      3840 8342
TIME...MOT...LOC 0203Z 311DEG 28KT 3837 8334 

HAIL...0.75IN
WIND...60MPH
 
$$

GEERTSON

1 follow-up statement

564 
WWUS53 KJKL 300231
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
1031 PM EDT Thu Jul 29 2021

KYC205-300239-
/O.EXP.KJKL.SV.W.0074.000000T0000Z-210730T0230Z/
Rowan KY-
1031 PM EDT Thu Jul 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ROWAN COUNTY WILL
EXPIRE AT 1030 PM EDT...
    
The severe thunderstorm which prompted the warning is still capable 
of producing severe winds, large hail, and possibly a tornado. 
Another warning has been issued. Refer to that bulletin for the 
latest details.

Remember, a Severe Thunderstorm Warning still remains in effect for
eastern Rowan and Northwestern Elliot counties until 1100 PM.

LAT...LON 3835 8337 3832 8336 3830 8333 3828 8333
      3827 8332 3821 8330 3821 8329 3820 8327
      3819 8326 3819 8324 3815 8328 3836 8347
      3840 8342
TIME...MOT...LOC 0229Z 311DEG 28KT 3824 8315 

$$

GEERTSON

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, 10:25 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, 12:36 AM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Knott, Magoffin, Perry	39 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.