Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 37, NWS Jackson, KY

June 13, 20214 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jun 13, 2021, 6:57 PM EDT for 4 counties in Kentucky. It was in force for 33 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
Jun 13, 2021, 6:57 PM EDT (22:57 UTC)
Expired
Jun 13, 2021, 7:30 PM EDT
In force
33 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Clay County, KY, Jackson County, KY, Laurel County, KY, Rockcastle County, KY

The radar

The Jackson,KY radar (KJKL), 72 km from the middle of the area, began a volume at 22:57 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
Jun 13, 7:18 PM EDTTSTM WND DMG1 Se Greenmount, KYTREE BLOWN DOWN.
Jun 13, 7:30 PM EDTTSTM WND DMG1 Ene Pittsburg, KYMULTIPLE TREES BLOWN DOWN, TAKING POWER LINES ALONG.

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 12:00Z, 11.0 hours before the alert went out and 236 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, Cncnati-Daytn, OH at 12:00Z on 2021-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 802 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, Cncnati-Daytn, OH at 12:00Z on 2021-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 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
802 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
1233 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

546 
WUUS53 KJKL 132257
SVRJKL
KYC051-109-125-203-132330-
/O.NEW.KJKL.SV.W.0037.210613T2257Z-210613T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
657 PM EDT Sun Jun 13 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  Northeastern Laurel County in south central Kentucky...
  Southern Jackson County in southeastern Kentucky...
  East central Rockcastle County in south central Kentucky...
  Northwestern Clay County in southeastern Kentucky...

* Until 730 PM EDT.

* At 656 PM EDT, a severe thunderstorm was located over Middlefork,
  or 7 miles southwest of McKee, moving southeast at 25 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 be near...
  Templer around 700 PM EDT.
  Parrot around 705 PM EDT.
  Peoples around 710 PM EDT.
  Greenmount around 715 PM EDT.

Other locations in the path of this severe thunderstorm include
Mcwhorter and Langnau.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3738 8419 3746 8402 3725 8377 3710 8410
TIME...MOT...LOC 2256Z 333DEG 20KT 3735 8408 

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

HAL
2 follow-up statements
017 
WWUS53 KJKL 132317
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
717 PM EDT Sun Jun 13 2021

KYC203-132326-
/O.CAN.KJKL.SV.W.0037.000000T0000Z-210613T2330Z/
Rockcastle KY-
717 PM EDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ROCKCASTLE 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 3726 8415 3737 8391 3725 8377 3710 8410
TIME...MOT...LOC 2316Z 333DEG 20KT 3725 8401 

$$

KYC051-109-125-132330-
/O.CON.KJKL.SV.W.0037.000000T0000Z-210613T2330Z/
Laurel KY-Jackson KY-Clay KY-
717 PM EDT Sun Jun 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHEASTERN LAUREL...SOUTHEASTERN JACKSON AND NORTHWESTERN CLAY
COUNTIES...

At 716 PM EDT, a severe thunderstorm was located over Greenmount, or
9 miles northeast of London, moving southeast at 25 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
  Royrader, Benge and Langnau.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3726 8415 3737 8391 3725 8377 3710 8410
TIME...MOT...LOC 2316Z 333DEG 20KT 3725 8401 

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

HAL
223 
WWUS53 KJKL 132332
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
732 PM EDT Sun Jun 13 2021

KYC051-109-125-132341-
/O.EXP.KJKL.SV.W.0037.000000T0000Z-210613T2330Z/
Laurel KY-Jackson KY-Clay KY-
732 PM EDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LAUREL...
SOUTHEASTERN JACKSON AND NORTHWESTERN CLAY COUNTIES HAS EXPIRED...
                
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 has been allowed to expire.  However, gusty 
winds above 40 mph are still possible with this thunderstorm.

LAT...LON 3726 8415 3737 8391 3725 8377 3710 8410
TIME...MOT...LOC 2331Z 333DEG 20KT 3721 8399 

$$

HAL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 3:30 PM EDTSpecial Weather StatementJKLBath30 min
Jun 13, 3:53 PM EDTSpecial Weather StatementJKLFleming52 min
Jun 13, 6:26 PM EDTSpecial Weather StatementJKLJackson34 min
Jun 13, 6:27 PM EDTSpecial Weather StatementJKLJackson33 min
Jun 13, 6:29 PM EDTSpecial Weather StatementJKLMartin46 min
Jun 13, 7:14 PM EDTSevere Thunderstorm WarningJKLLaurel, Pulaski, Rockcastle31 min
Jun 13, 7:27 PM EDTAreal Flood AdvisoryJKLJackson111 min
Jun 13, 7:33 PM EDTSpecial Weather StatementJKLClay, Knox, Laurel, Owsley57 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.