Alert archive / West Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Charleston, WV

August 9, 2021Boone County, West Virginia

NWS Charleston, WV issued this special weather statement at Aug 9, 2021, 4:55 PM EDT for Boone County, West Virginia. It was in force for 35 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
Aug 9, 2021, 4:55 PM EDT (20:55 UTC)
Expired
Aug 9, 2021, 5:30 PM EDT
In force
35 min
Issued by
NWS Charleston, WV
Hail
0.00 in
Wind
40

County Boone County, WV

The radar

The Charleston,WV radar (KRLX), 17 km from the middle of the area, began a volume at 20:55 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
Aug 9, 5:00 PM EDTTSTM WND DMG6 Nnw Danville, WVSMALL TREE LIMBS DOWN AND THE TOP OF ONE TREE DOWN.

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, 8.9 hours before the alert went out and 214 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 2021-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 210 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 2021-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
210 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1127 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

667 
WWUS81 KRLX 092055
SPSRLX

Special Weather Statement
National Weather Service Charleston WV
455 PM EDT Mon Aug 9 2021
 
WVZ013-015-026-092130-
Boone WV-Kanawha WV-Lincoln WV-
455 PM EDT Mon Aug 9 2021

...A strong thunderstorm will impact portions of west central
Kanawha, northeastern Lincoln and northwestern Boone Counties through
530 PM EDT...

At 454 PM EDT, Doppler radar was tracking a strong thunderstorm near
Julian, or 7 miles northwest of Madison, moving northeast at 25 mph.

HAZARD...Winds in excess of 45 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Madison, Alum Creek, Spurlockville, Julian, Tornado, Danville, Sod,
Woodville, Ashford, Foster, Alkol, Mud and Yawkey.

This includes Route 119 between mile markers 49 and 70.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

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

&&

LAT...LON 3832 8193 3834 8191 3823 8163 3803 8185
      3810 8204
TIME...MOT...LOC 2054Z 209DEG 18KT 3811 8192 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

22

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 4:57 PM EDTSevere Thunderstorm WarningRLXBoone, Kanawha, Lincoln33 min
Aug 9, 5:39 PM EDTSpecial Weather StatementRLXKanawha36 min
Aug 9, 5:57 PM EDTSpecial Weather StatementRLXRoane48 min
Aug 9, 3:44 PM EDTSpecial Weather StatementRLXLawrence31 min

Nearby

Special Weather Statements in West Virginia, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.