Alert archive / West Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Charleston, WV

August 5, 2021Boone County, West Virginia

NWS Charleston, WV issued this special weather statement at Aug 5, 2021, 1:49 AM EDT for Boone County, West Virginia. It was in force for 26 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 5, 2021, 1:49 AM EDT (05:49 UTC)
Expired
Aug 5, 2021, 2:15 AM EDT
In force
26 min
Issued by
NWS Charleston, WV
Hail
0.00 in
Wind
30

County Boone County, WV

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 5.8 hours before the alert went out and 226 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, Roanoke, VA at 00:00Z on 2021-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 00:00Z on 2021-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.19395878Sfc1 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
20 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
1604 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

342 
WWUS81 KRLX 050549
SPSRLX

Special Weather Statement
National Weather Service Charleston WV
149 AM EDT Thu Aug 5 2021
 
WVZ015-026-050615-
Boone WV-Kanawha WV-
149 AM EDT Thu Aug 5 2021

...A strong thunderstorm will impact portions of west central Kanawha
and northeastern Boone Counties through 215 AM EDT...

At 148 AM EDT, Doppler radar was tracking a strong thunderstorm near
Madison, moving north at 15 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Madison, Chesapeake, Seth, Foster, Prenter, Ashford and Racine. 

This includes West Virginia Turnpike between mile markers 86 and 87.
 
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.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to travel across
flooded roads. Find alternate routes. It takes only a few inches of
swiftly flowing water to carry vehicles away.

&&

LAT...LON 3800 8181 3822 8183 3822 8182 3823 8182
      3822 8181 3822 8180 3823 8181 3822 8151
      3799 8159
TIME...MOT...LOC 0548Z 184DEG 12KT 3807 8170 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

$$

JP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 10:11 PM EDTSpecial Weather StatementRLXRaleigh34 min
Aug 4, 10:40 PM EDTFlash Flood WarningRLXRaleigh, Wyoming3 hr
Aug 5, 12:09 AM EDTSpecial Weather StatementRLXFayette51 min
Aug 5, 1:07 AM EDTSpecial Weather StatementRLXBoone23 min
Aug 5, 1:18 AM EDTAreal Flood WarningRLXRaleigh, Wyoming4 hr

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; the sounding from the Mesonet's radiosonde archive.