Alert archive / West Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 126, NWS Charleston, WV

December 27, 20214 counties in West Virginia

NWS Charleston, WV issued this severe thunderstorm warning at Dec 27, 2021, 9:52 PM EST for 4 counties in West Virginia. It was in force for 23 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
Dec 27, 2021, 9:52 PM EST (02:52 UTC)
Expired
Dec 27, 2021, 10:15 PM EST
In force
23 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Braxton County, WV, Calhoun County, WV, Clay County, WV, Gilmer County, WV

The radar

The Charleston,WV radar (KRLX), 75 km from the middle of the area, began a volume at 02:52 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

Pittsburgh, PA (KPIT), launched 00:00Z, 2.9 hours before the alert went out and 205 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, Pittsburgh, PA at 00:00Z on 2021-12-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 481 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, Pittsburgh, PA at 00:00Z on 2021-12-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 364 square meters per square second.1939587897117136156Sfc1 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
481 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
630 m above ground
0-6 km bulk shear
93 kt
0-1 km storm-relative helicity
364 m²/s²
0-3 km storm-relative helicity
415 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted.

819 
WUUS51 KRLX 280252
SVRRLX
WVC007-013-015-021-280315-
/O.NEW.KRLX.SV.W.0126.211228T0252Z-211228T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston WV
952 PM EST Mon Dec 27 2021

The National Weather Service in Charleston West Virginia has issued a

* Severe Thunderstorm Warning for...
  Southeastern Calhoun County in north central West Virginia...
  Southwestern Gilmer County in north central West Virginia...
  Southwestern Braxton County in north central West Virginia...
  Northeastern Clay County in north central West Virginia...

* Until 1015 PM EST.

* At 952 PM EST, a severe thunderstorm was located over Arnoldsburg,
  or 11 miles south of Grantsville, moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Sutton, Gassaway, Arnoldsburg, Flatwoods, Nebo, Shock, Millstone,
  Frametown, Strange Creek, Wilsie, Servia, Rosedale, Exchange,
  Heaters, Orma, Nicut and Chloe.

This includes Interstate 79 between mile markers 43 and 55, between
mile markers 62 and 64, and between mile markers 69 and 73.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3854 8087 3871 8117 3873 8118 3874 8117
      3876 8119 3883 8107 3877 8060
TIME...MOT...LOC 0252Z 285DEG 29KT 3875 8112 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

11
1 follow-up statement
090 
WWUS51 KRLX 280313
SVSRLX

Severe Weather Statement
National Weather Service Charleston WV
1013 PM EST Mon Dec 27 2021

WVC007-013-015-021-280322-
/O.EXP.KRLX.SV.W.0126.000000T0000Z-211228T0315Z/
Calhoun WV-Gilmer WV-Braxton WV-Clay WV-
1013 PM EST Mon Dec 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CALHOUN...
SOUTHWESTERN GILMER...SOUTHWESTERN BRAXTON AND NORTHEASTERN CLAY
COUNTIES WILL EXPIRE AT 1015 PM EST...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 3854 8087 3871 8117 3873 8118 3874 8117
      3876 8119 3883 8107 3877 8060
TIME...MOT...LOC 0312Z 285DEG 29KT 3872 8097 

$$

11

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 27, 8:54 PM ESTSpecial Weather StatementRLXJackson36 min
Dec 27, 9:09 PM ESTSpecial Weather StatementRLXMason, Putnam36 min
Dec 27, 9:14 PM ESTSpecial Weather StatementRLXRoane46 min
Dec 27, 9:41 PM ESTSpecial Weather StatementRLXCalhoun34 min
Dec 27, 10:01 PM ESTSpecial Weather StatementRLXClay29 min
Dec 27, 10:12 PM ESTSevere Thunderstorm WarningRLXBraxton33 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 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.