Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 87, NWS Jackson, KY

August 27, 2021Magoffin County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Aug 27, 2021, 4:40 PM EDT for Magoffin County, Kentucky. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 27, 2021, 4:40 PM EDT (20:40 UTC)
Expired
Aug 27, 2021, 5:00 PM EDT
In force
20 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Magoffin County, KY

The radar

The Jackson,KY radar (KJKL), 27 km from the middle of the area, began a volume at 20:41 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.7 hours before the alert went out and 193 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 2021-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 167 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 2021-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
167 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
1311 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

039 
WUUS53 KJKL 272040
SVRJKL
KYC153-272115-
/O.NEW.KJKL.SV.W.0087.210827T2040Z-210827T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service JACKSON KY
440 PM EDT Fri Aug 27 2021

The National Weather Service in JACKSON KY has issued a

* Severe Thunderstorm Warning for...
  North central Magoffin County in southeastern Kentucky...

* Until 515 PM EDT.

* At 439 PM EDT, a severe thunderstorm was located over Elsie, or
  near Salyersville, moving northeast at 10 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...
  Licksburg around 450 PM EDT.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to 
localized flooding. Do not drive your vehicle through flooded 
roadways.

&&

LAT...LON 3775 8313 3779 8317 3784 8311 3778 8304
TIME...MOT...LOC 2039Z 233DEG 8KT 3778 8312 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

HAL
1 follow-up statement
475 
WWUS53 KJKL 272100
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
500 PM EDT Fri Aug 27 2021

KYC153-272109-
/O.CAN.KJKL.SV.W.0087.000000T0000Z-210827T2115Z/
Magoffin KY-
500 PM EDT Fri Aug 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MAGOFFIN COUNTY
IS CANCELLED...
                
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 cancelled.

LAT...LON 3775 8313 3779 8317 3784 8311 3778 8304
TIME...MOT...LOC 2057Z 233DEG 8KT 3781 8307 

$$

HAL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 10:02 PM EDTAreal Flood AdvisoryJKLPulaski118 min
Aug 27, 12:01 AM EDTSpecial Weather StatementJKLWhitley14 min
Aug 27, 12:19 AM EDTSpecial Weather StatementJKLWhitley26 min
Aug 27, 1:45 PM EDTSpecial Weather StatementJKLLee30 min
Aug 27, 4:08 PM EDTSpecial Weather StatementJKLMontgomery22 min
Aug 27, 4:14 PM EDTSpecial Weather StatementJKLMagoffin16 min
Aug 27, 4:25 PM EDTSpecial Weather StatementJKLMorgan35 min
Aug 27, 5:11 PM EDTSpecial Weather StatementJKLElliott19 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.