Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 64, NWS Jackson, KY

July 1, 20214 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jul 1, 2021, 1:14 AM EDT for 4 counties in Kentucky. It was in force for 46 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 1, 2021, 1:14 AM EDT (05:14 UTC)
Expired
Jul 1, 2021, 2:00 AM EDT
In force
46 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Jackson County, KY, Laurel County, KY, Pulaski County, KY, Rockcastle County, KY

The radar

The Jackson,KY radar (KJKL), 94 km from the middle of the area, began a volume at 05:15 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 1, 1:18 AM EDTTSTM WND DMG2 Wnw Bloss, KYTREE ACROSS ROAD ON PLATO VAN HOOK RD.

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, 5.2 hours before the alert went out and 241 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 2021-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 521 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 2021-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 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
521 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1528 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
-54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

646 
WUUS53 KJKL 010514
SVRJKL
KYC109-125-199-203-010600-
/O.NEW.KJKL.SV.W.0064.210701T0514Z-210701T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
114 AM EDT Thu Jul 1 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Northern Laurel County in south central Kentucky...
  East central Pulaski County in south central Kentucky...
  Southwestern Jackson County in southeastern Kentucky...
  Southeastern Rockcastle County in south central Kentucky...

* Until 200 AM EDT.

* At 113 AM EDT, a severe thunderstorm was located over Pongo, or 9
  miles south of Mount Vernon, moving northeast at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Sand Hill around 125 AM EDT.
  Camp Wildcat around 130 AM EDT.

Other locations in the path of this severe thunderstorm include
Gauley, Templer, Carico and Middlefork.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3711 8440 3723 8445 3744 8411 3722 8398
TIME...MOT...LOC 0513Z 242DEG 23KT 3723 8432 

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

GREIF
4 follow-up statements
867 
WWUS53 KJKL 010523
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
123 AM EDT Thu Jul 1 2021

KYC199-010533-
/O.CAN.KJKL.SV.W.0064.000000T0000Z-210701T0600Z/
Pulaski KY-
123 AM EDT Thu Jul 1 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PULASKI COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3717 8429 3728 8437 3744 8411 3726 8400
TIME...MOT...LOC 0523Z 242DEG 23KT 3726 8425 

$$

KYC109-125-203-010600-
/O.CON.KJKL.SV.W.0064.000000T0000Z-210701T0600Z/
Laurel KY-Jackson KY-Rockcastle KY-
123 AM EDT Thu Jul 1 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EDT
FOR NORTHWESTERN LAUREL...SOUTHWESTERN JACKSON AND SOUTHEASTERN
ROCKCASTLE COUNTIES...

At 123 AM EDT, a severe thunderstorm was located over Sand Hill, or 9
miles southeast of Mount Vernon, moving northeast at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
  Lamero, Cruise, Carico and Parrot.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3717 8429 3728 8437 3744 8411 3726 8400
TIME...MOT...LOC 0523Z 242DEG 23KT 3726 8425 

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

GREIF
241 
WWUS53 KJKL 010532
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
132 AM EDT Thu Jul 1 2021

KYC109-125-203-010600-
/O.CON.KJKL.SV.W.0064.000000T0000Z-210701T0600Z/
Laurel KY-Jackson KY-Rockcastle KY-
132 AM EDT Thu Jul 1 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EDT
FOR NORTH CENTRAL LAUREL...SOUTHWESTERN JACKSON AND EAST CENTRAL
ROCKCASTLE COUNTIES...

At 132 AM EDT, a severe thunderstorm was located over Camp Wildcat,
or 10 miles southeast of Mount Vernon, moving northeast at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Carico, Middlefork, Camp Wildcat, Donaro, Sinks, Cruise, Parrot,
Robinet, Loam, Cooksburg, Horse Lick and Gauley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3725 8422 3734 8427 3744 8411 3730 8402
TIME...MOT...LOC 0532Z 242DEG 23KT 3729 8419 

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

GREIF
237 
WWUS53 KJKL 010542
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
142 AM EDT Thu Jul 1 2021

KYC125-010552-
/O.CAN.KJKL.SV.W.0064.000000T0000Z-210701T0600Z/
Laurel KY-
142 AM EDT Thu Jul 1 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL LAUREL COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3744 8411 3733 8404 3731 8410 3734 8412
      3732 8414 3731 8413 3731 8414 3730 8417
      3737 8422
TIME...MOT...LOC 0542Z 243DEG 27KT 3735 8413 

$$

KYC109-203-010600-
/O.CON.KJKL.SV.W.0064.000000T0000Z-210701T0600Z/
Jackson KY-Rockcastle KY-
142 AM EDT Thu Jul 1 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EDT
FOR SOUTHWESTERN JACKSON AND EAST CENTRAL ROCKCASTLE COUNTIES...

At 142 AM EDT, a severe thunderstorm was located over Horse Lick, or
9 miles southwest of McKee, moving northeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Carico, Middlefork, Dango, Robinet, Ardery, Loam, Cooksburg, Jep Hill
and Horse Lick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3744 8411 3733 8404 3731 8410 3734 8412
      3732 8414 3731 8413 3731 8414 3730 8417
      3737 8422
TIME...MOT...LOC 0542Z 243DEG 27KT 3735 8413 

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

GREIF
932 
WWUS53 KJKL 010552
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
152 AM EDT Thu Jul 1 2021

KYC109-203-010602-
/O.EXP.KJKL.SV.W.0064.000000T0000Z-210701T0600Z/
Jackson KY-Rockcastle KY-
152 AM EDT Thu Jul 1 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN JACKSON AND EAST
CENTRAL ROCKCASTLE COUNTIES WILL EXPIRE AT 200 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 are still possible with this thunderstorm.

LAT...LON 3744 8411 3733 8404 3731 8410 3734 8412
      3732 8414 3731 8413 3731 8414 3730 8417
      3737 8422
TIME...MOT...LOC 0552Z 242DEG 23KT 3738 8406 

$$

GREIF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 12:13 AM EDTSpecial Weather StatementJKLRockcastle47 min
Jul 1, 12:22 AM EDTSpecial Weather StatementJKLPulaski38 min
Jul 1, 12:48 AM EDTSpecial Weather StatementJKLPulaski42 min
Jul 1, 1:00 AM EDTSpecial Weather StatementJKLRockcastle45 min
Jul 1, 1:28 AM EDTSpecial Weather StatementJKLJackson, Rockcastle47 min
Jul 1, 7:44 AM EDTSpecial Weather StatementJKLPowell46 min
Jul 1, 9:43 AM EDTAreal Flood AdvisoryJKLEstill, Powell3 hr
Jul 1, 10:34 AM EDTFlash Flood WarningJKLEstill, Powell4 hr
Jul 1, 2:31 PM EDTAreal Flood AdvisoryJKLEstill, Powell3 hr
Jul 1, 3:19 PM EDTAreal Flood WarningJKLEstill, Menifee, Powell3 hr
Jul 1, 3:37 PM EDTRiver Flood AdvisoryJKLEstill, Powell37 hr
Jul 1, 3:52 PM EDTAreal Flood AdvisoryJKLClay, Knott, Knox, Laurel, Leslie, McCreary and 2 more3 hr
Jul 1, 4:23 PM EDTFlash Flood WarningJKLClay, Knox, Laurel, Whitley4 hr
Jul 1, 5:15 PM EDTFlash Flood WarningJKLKnott, Leslie, Perry3 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.