Alert archive / Kentucky / Special Weather Statements in 2021

Special Weather Statement, NWS Charleston, WV

July 13, 2021Boyd County, Carter County, Kentucky

NWS Charleston, WV issued this special weather statement at Jul 13, 2021, 4:11 PM EDT for Boyd County, Carter County, Kentucky. It was in force for 34 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
Jul 13, 2021, 4:11 PM EDT (20:11 UTC)
Expired
Jul 13, 2021, 4:45 PM EDT
In force
34 min
Issued by
NWS Charleston, WV

Counties Boyd County, KY, Carter County, KY

The radar

The Jackson,KY radar (KJKL), 84 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 136 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 2021-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 328 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 2021-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 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
328 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
655 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

192 
WWUS81 KRLX 132011
SPSRLX

Special Weather Statement
National Weather Service Charleston WV
411 PM EDT Tue Jul 13 2021

KYZ101>103-132045-
Boyd-Greenup-Carter-
411 PM EDT Tue Jul 13 2021

...A STRONG THUNDERSTORM WILL AFFECT BOYD...SOUTHERN GREENUP AND
CARTER COUNTIES...

At 410 PM EDT, a strong thunderstorm was located over Olive Hill,
moving northeast at 35 mph.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
Ashland, Grayson, Olive Hill, Cannonsburg, Grayson Lake State Park,
Carter Caves State Park, Kenova, Catlettsburg, Greenup, Princess,
Coalton, Denton, Gesling, Greenbo Lake, Oldtown, Naples, Rush,
Franklin Furnace, Carter and Flatwoods.

This includes Interstate 64 in Kentucky between mile markers 150 and
191.
 
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3833 8332 3833 8327 3834 8323 3835 8324
      3838 8323 3858 8284 3857 8280 3842 8259
      3834 8260 3820 8307 3823 8309 3827 8318
      3823 8322 3819 8323 3819 8326 3832 8334
TIME...MOT...LOC 2010Z 239DEG 34KT 3828 8320 

$$

MEK

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 12, 8:33 PM EDTSpecial Weather StatementRLXMason27 min
Jul 12, 8:40 PM EDTSevere Thunderstorm WarningRLXCabell, Mason, Putnam35 min
Jul 12, 9:14 PM EDTSpecial Weather StatementRLXMason31 min
Jul 13, 4:50 PM EDTSpecial Weather StatementRLXWayne25 min
Jul 13, 5:16 PM EDTSpecial Weather StatementRLXWayne29 min
Jul 13, 4:47 PM EDTSpecial Weather StatementRLXGreenup28 min

Nearby

Special Weather Statements in Kentucky, 2021Every special weather statement 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.