Alert archive / West Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Charleston, WV

August 9, 2021Kanawha County, West Virginia

NWS Charleston, WV issued this special weather statement at Aug 9, 2021, 5:39 PM EDT for Kanawha County, West Virginia. It was in force for 36 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 9, 2021, 5:39 PM EDT (21:39 UTC)
Expired: Aug 9, 2021, 6:15 PM EDT
In force: 36 min
Issued by: NWS Charleston, WV
Hail: 0.00 in
Wind: 40

County Kanawha County, WV

The radar

The Charleston,WV radar (KRLX), 13 km from the middle of the area, began a volume at 21:41 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, 9.7 hours before the alert went out and 221 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

213 
WWUS81 KRLX 092139
SPSRLX

Special Weather Statement
National Weather Service Charleston WV
539 PM EDT Mon Aug 9 2021
 
WVZ015-092215-
Kanawha WV-
539 PM EDT Mon Aug 9 2021

...A strong thunderstorm will impact portions of northwestern Kanawha
County through 615 PM EDT...

At 539 PM EDT, Doppler radar was tracking a strong thunderstorm near
South Charleston, or near Charleston, moving northeast at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Charleston, Jefferson, South Charleston, Dunbar, Sissonville,
Institute, Elkview and Pinch.

This includes the following highways...
 Interstate 79 between mile markers 1 and 13.
 Interstate 77 in West Virginia between mile markers 99 and 112.
 Interstate 64 in West Virginia between mile markers 50 and 57.
 Route 119 between mile markers 74 and 80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3828 8169 3836 8180 3860 8153 3845 8141
TIME...MOT...LOC 2139Z 223DEG 20KT 3838 8168 

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

$$

08

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 4:55 PM EDT	Special Weather Statement	RLX	Boone	35 min
Aug 9, 4:57 PM EDT	Severe Thunderstorm Warning	RLX	Boone, Kanawha, Lincoln	33 min
Aug 9, 5:57 PM EDT	Special Weather Statement	RLX	Roane	48 min
Aug 9, 3:44 PM EDT	Special Weather Statement	RLX	Lawrence	31 min

Nearby

Special Weather Statements in West Virginia, 2021 Every 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.