Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 57, NWS Jackson, KY

June 21, 20214 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jun 21, 2021, 4:42 PM EDT for 4 counties in Kentucky. It was in force for 33 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: Jun 21, 2021, 4:42 PM EDT (20:42 UTC)
Expired: Jun 21, 2021, 5:15 PM EDT
In force: 33 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Floyd County, KY, Johnson County, KY, Martin County, KY, Pike County, KY

The radar

The Jackson,KY radar (KJKL), 53 km from the middle of the area, began a volume at 20:46 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
Jun 21, 4:48 PM EDT	TSTM WND DMG	1 Ssw Endicott, KY	FLOYD COUNTY 911 CALL CENTER REPORTS DOWNED TREE BLOCKING HIGHWAY 194 ON A HILL NEAR COW CREEK. TIME ESTIMATED FROM RADAR.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 21, 1:52 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.7 hours before the alert went out and 225 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: 1320 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 785 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 313 m²/s²
0-3 km storm-relative helicity: 308 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 6.7

Open this sounding in Storm Lab

The text

As transmitted.

367 
WUUS53 KJKL 212042
SVRJKL
KYC071-115-159-195-212115-
/O.NEW.KJKL.SV.W.0057.210621T2042Z-210621T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
442 PM EDT Mon Jun 21 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Southwestern Martin County in northeastern Kentucky...
  Southeastern Johnson County in northeastern Kentucky...
  Floyd County in southeastern Kentucky...
  Northwestern Pike County in southeastern Kentucky...

* Until 515 PM EDT.

* At 442 PM EDT, a severe thunderstorm was located over Cliff, or
  over Prestonsburg, moving east 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...
  Bays Branch around 445 PM EDT.
  Corn Fork Hollow around 450 PM EDT.
  Dicks Creek around 455 PM EDT.
  McCombs around 500 PM EDT.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3749 8243 3750 8291 3754 8288 3757 8290
      3773 8290 3782 8254
TIME...MOT...LOC 2042Z 258DEG 29KT 3767 8279 

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

GEERTSON

1 follow-up statement

563 
WWUS53 KJKL 212106
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
506 PM EDT Mon Jun 21 2021

KYC071-115-159-195-212116-
/O.EXP.KJKL.SV.W.0057.000000T0000Z-210621T2115Z/
Martin KY-Johnson KY-Floyd KY-Pike KY-
506 PM EDT Mon Jun 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MARTIN...
SOUTHEASTERN JOHNSON...FLOYD AND NORTHWESTERN PIKE COUNTIES WILL
EXPIRE AT 515 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 gusty
winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southeastern and northeastern Kentucky.

LAT...LON 3749 8243 3750 8291 3754 8288 3757 8290
      3773 8290 3782 8254
TIME...MOT...LOC 2106Z 258DEG 29KT 3771 8256 

$$

GEERTSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 12:30 PM EDT	Special Weather Statement	JKL	Menifee, Montgomery	30 min
Jun 21, 12:34 PM EDT	Special Weather Statement	JKL	Jackson	26 min
Jun 21, 12:55 PM EDT	Special Weather Statement	JKL	Breathitt	35 min
Jun 21, 1:01 PM EDT	Special Weather Statement	JKL	Martin	29 min
Jun 21, 1:14 PM EDT	Special Weather Statement	JKL	Knott	16 min
Jun 21, 1:16 PM EDT	Special Weather Statement	JKL	Montgomery	29 min
Jun 21, 1:22 PM EDT	Special Weather Statement	JKL	Menifee	23 min
Jun 21, 1:26 PM EDT	Severe Thunderstorm Warning	JKL	Bath, Menifee, Montgomery, Powell	34 min
Jun 21, 1:35 PM EDT	Special Weather Statement	JKL	Wolfe	25 min
Jun 21, 1:38 PM EDT	Severe Thunderstorm Warning	JKL	Menifee, Montgomery, Powell	37 min
Jun 21, 1:45 PM EDT	Special Weather Statement	JKL	Menifee, Morgan	30 min
Jun 21, 1:58 PM EDT	Special Weather Statement	JKL	Wolfe	32 min
Jun 21, 2:08 PM EDT	Severe Thunderstorm Warning	JKL	Menifee, Morgan, Powell, Rowan, Wolfe	37 min
Jun 21, 2:10 PM EDT	Special Weather Statement	JKL	Martin	35 min
Jun 21, 2:26 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Menifee, Montgomery, Powell, Wolfe	34 min
Jun 21, 2:33 PM EDT	Special Weather Statement	JKL	Elliott	27 min
Jun 21, 2:39 PM EDT	Special Weather Statement	JKL	Rockcastle	36 min
Jun 21, 2:43 PM EDT	Severe Thunderstorm Warning	JKL	Jackson, Rockcastle	32 min
Jun 21, 2:49 PM EDT	Special Weather Statement	JKL	Estill	26 min
Jun 21, 2:51 PM EDT	Special Weather Statement	JKL	Pulaski, Wayne	24 min
Jun 21, 2:52 PM EDT	Areal Flood Advisory	JKL	Estill, Menifee, Montgomery, Morgan, Powell, Wolfe	3 hr
Jun 21, 2:57 PM EDT	Special Weather Statement	JKL	Jackson	33 min
Jun 21, 3:00 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Estill, Lee, Menifee, Montgomery, Morgan and 2 more	30 min
Jun 21, 3:10 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Jackson, Lee, Owsley	35 min
Jun 21, 3:22 PM EDT	Severe Thunderstorm Warning	JKL	Clay, Jackson, Laurel, Lee, Owsley, Rockcastle	23 min
Jun 21, 3:29 PM EDT	Special Weather Statement	JKL	Wolfe	31 min
Jun 21, 3:41 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Lee, Owsley, Wolfe	34 min
Jun 21, 3:46 PM EDT	Special Weather Statement	JKL	Owsley	29 min
Jun 21, 3:47 PM EDT	Special Weather Statement	JKL	Wayne	43 min
Jun 21, 3:51 PM EDT	Special Weather Statement	JKL	Jackson, Rockcastle	24 min
Jun 21, 3:55 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Clay, Leslie, Owsley, Perry	35 min
Jun 21, 4:06 PM EDT	Special Weather Statement	JKL	Magoffin	24 min
Jun 21, 4:08 PM EDT	Severe Thunderstorm Warning	JKL	Pulaski, Wayne	37 min
Jun 21, 4:18 PM EDT	Severe Thunderstorm Warning	JKL	Pulaski, Wayne	27 min
Jun 21, 4:23 PM EDT	Special Weather Statement	JKL	Jackson, Rockcastle	37 min
Jun 21, 4:28 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Floyd, Knott, Magoffin	32 min
Jun 21, 4:29 PM EDT	Areal Flood Advisory	JKL	Clay, Jackson, Laurel, Owsley, Pulaski, Rockcastle	3 hr
Jun 21, 4:30 PM EDT	Special Weather Statement	JKL	Knott, Perry	30 min
Jun 21, 4:34 PM EDT	Severe Thunderstorm Warning	JKL	Laurel, McCreary, Pulaski, Rockcastle	26 min
Jun 21, 4:42 PM EDT	Special Weather Statement	JKL	McCreary, Whitley	48 min
Jun 21, 4:51 PM EDT	Areal Flood Advisory	JKL	Breathitt, Floyd, Johnson, Magoffin	3 hr
Jun 21, 4:53 PM EDT	Special Weather Statement	JKL	Leslie	37 min
Jun 21, 4:56 PM EDT	Severe Thunderstorm Warning	JKL	Clay, Jackson, Laurel, Owsley, Rockcastle	39 min
Jun 21, 5:00 PM EDT	Special Weather Statement	JKL	Knott	30 min
Jun 21, 5:01 PM EDT	Special Weather Statement	JKL	Wayne	29 min
Jun 21, 5:04 PM EDT	Special Weather Statement	JKL	Bell, Knox, Whitley	41 min
Jun 21, 5:12 PM EDT	Special Weather Statement	JKL	Pike	33 min
Jun 21, 5:17 PM EDT	Severe Thunderstorm Warning	JKL	Bell	43 min
Jun 21, 5:25 PM EDT	Severe Thunderstorm Warning	JKL	Bell, Clay, Knox, Whitley	50 min
Jun 21, 5:28 PM EDT	Special Weather Statement	JKL	Leslie	17 min
Jun 21, 5:34 PM EDT	Special Weather Statement	JKL	Clay	26 min
Jun 21, 5:49 PM EDT	Special Weather Statement	JKL	Whitley	41 min
Jun 21, 5:52 PM EDT	Special Weather Statement	JKL	Harlan	38 min
Jun 21, 6:10 PM EDT	Special Weather Statement	JKL	Leslie	50 min
Jun 21, 6:15 PM EDT	Special Weather Statement	JKL	Bell	45 min
Jun 21, 6:32 PM EDT	Special Weather Statement	JKL	Letcher	43 min
Jun 21, 6:34 PM EDT	Severe Thunderstorm Warning	JKL	Harlan, Letcher, Perry	41 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.