Alert archive / West Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Charleston, WV

June 20, 2021Harrison County, West Virginia

NWS Charleston, WV issued this special weather statement at Jun 20, 2021, 1:21 AM EDT for Harrison County, West Virginia. It was in force for 24 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
Jun 20, 2021, 1:21 AM EDT (05:21 UTC)
Expired
Jun 20, 2021, 1:45 AM EDT
In force
24 min
Issued by
NWS Charleston, WV

County Harrison County, WV

The radar

The Pittsburgh radar (KPBZ), 153 km from the middle of the area, began a volume at 05:22 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, 5.4 hours before the alert went out and 140 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 2021-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 168 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, Pittsburgh, PA at 00:00Z on 2021-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939587897Sfc1 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
168 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1043 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.7

Open this sounding in Storm Lab

The text

As transmitted.

705 
WWUS81 KRLX 200521
SPSRLX

Special Weather Statement
National Weather Service Charleston WV
121 AM EDT Sun Jun 20 2021

WVZ031-032-040-200545-
Barbour-Harrison-Taylor-
121 AM EDT Sun Jun 20 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN TAYLOR...
NORTHWESTERN BARBOUR AND SOUTHERN HARRISON COUNTIES...

At 121 AM EDT, a strong thunderstorm was located near Nutter Fort, or
near Clarksburg, moving east at 35 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Clarksburg, Bridgeport, Stonewood, Nutter Fort, Anmoore, West
Milford, Lost Creek, Flemington, Rosemont, Wolf Summit and Despard.

This includes the following highways...
 Interstate 79 between mile markers 108 and 122.
 Route 50 in West Virginia between mile markers 70 and 82.

LAT...LON 3909 8019 3911 8023 3911 8024 3910 8025
      3910 8026 3917 8052 3933 8050 3930 8011
TIME...MOT...LOC 0521Z 278DEG 29KT 3923 8043 

$$

JP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 9:16 PM EDTSpecial Weather StatementRLXUpshur44 min
Jun 19, 9:20 PM EDTSpecial Weather StatementRLXBarbour25 min
Jun 19, 9:53 PM EDTSpecial Weather StatementRLXLewis37 min
Jun 19, 10:32 PM EDTSpecial Weather StatementRLXBarbour28 min
Jun 20, 12:15 AM EDTSpecial Weather StatementRLXWirt30 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.