Alert archive / West Virginia / Special Weather Statements in 2020

Special Weather Statement, NWS Charleston, WV

August 7, 2020Calhoun County, Gilmer County, Lewis County, West Virginia

NWS Charleston, WV issued this special weather statement at Aug 7, 2020, 4:20 AM EDT for Calhoun County, Gilmer County, Lewis County, West Virginia. It was in force for 25 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 7, 2020, 4:20 AM EDT (08:20 UTC)
Expired: Aug 7, 2020, 4:45 AM EDT
In force: 25 min
Issued by: NWS Charleston, WV

Counties Calhoun County, WV, Gilmer County, WV, Lewis County, WV

The radar

The Charleston,WV radar (KRLX), 93 km from the middle of the area, began a volume at 08:24 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

Roanoke, VA (KRNK), launched 00:00Z, 8.3 hours before the alert went out and 227 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: 309 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1121 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, WV wrote its last area forecast discussion before this special weather statement went out at Aug 7, 4:19 AM EDT, 1 minute earlier.

Area forecast discussion, Aug 7, 4:19 AM EDT, 1 minute before

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Hazardous weather outlook, Aug 7, 4:12 AM EDT, 8 minutes before

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In the hours before

Special weather statement, Aug 6, 11:32 PM EDT, 4 hours 48 minutes before

Special Weather Statement
National Weather Service Charleston WV
1132 PM EDT Thu Aug 6 2020

VAZ004-070400-
Buchanan-
1132 PM EDT Thu Aug 6 2020

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL BUCHANAN COUNTY...

At 1132 PM EDT, a strong thunderstorm was located near Big Rock, or
near Grundy, moving southeast at 15 mph.

Wind gusts up to 50 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Grundy, Roseann and Vansant.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in Charleston West Virginia.

LAT...LON 3734 8221 3739 8215 3737 8202 3730 8199
      3723 8206
TIME...MOT...LOC 0332Z 297DEG 14KT 3733 8214

HART

Special weather statement, Aug 7, 12:18 AM EDT, 4 hours 2 minutes before

Special Weather Statement
National Weather Service Charleston WV
1218 AM EDT Fri Aug 7 2020

VAZ003-004-070445-
Dickenson-Buchanan-
1218 AM EDT Fri Aug 7 2020

...HEAVY RAIN WILL AFFECT NORTHWESTERN DICKENSON AND WEST CENTRAL
BUCHANAN COUNTIES...

At 1216 AM EDT, persistent thunderstorms with heavy rainfall
continue to slowly move across northwestern Dickenson and west
central Buchanan counties. Rainfall amount of 1 to 2 inches in an
hour will be possible with these storms. This may result in isolated
high water impacts, particularly for poor drainage and typical flood
prone areas.

Locations impacted include...
Clintwood, Haysi, Breaks Interstate and John Flannagan Lake.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.

LAT...LON 3722 8252 3724 8245 3727 8235 3728 8234
      3728 8232 3730 8231 3737 8221 3725 8216
      3713 8253
TIME...MOT...LOC 0416Z 255DEG 13KT 3723 8241

HART

Special weather statement, Aug 7, 1:04 AM EDT, 3 hours 16 minutes before

Special Weather Statement
National Weather Service Charleston WV
104 AM EDT Fri Aug 7 2020

VAZ003-004-070530-
Dickenson-Buchanan-
104 AM EDT Fri Aug 7 2020

...HEAVY RAIN CONTINUES TO IMPACT DICKENSON AND BUCHANAN COUNTIES...

At 101 AM EDT, thunderstorms with heavy rainfall continue to impact
portions of Dickenson and Buchanan counties. Many areas have
received 1 to 2 inches of rain so far tonight, with another inch
possible. This may result in isolated high water impacts,
particularly for poor drainage areas and other typical low lying
flood prone areas.

Locations impacted include...
Grundy, Haysi, McClure, Nora and Vansant.

Persons in campgrounds should consider seeking sturdy shelter until
these thunderstorms pass.

Excessive runoff from heavy rainfall will cause elevated levels on
small creeks and streams, and ponding of water on country roads and
farmland along the banks of creeks and streams.

Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.

LAT...LON 3700 8241 3708 8247 3716 8230 3721 8234
      3733 8203 3727 8198 3721 8208 3715 8210
TIME...MOT...LOC 0501Z 246DEG 28KT 3727 8207

HART

Local storm report, Aug 7, 3:08 AM EDT, 1 hour 12 minutes before

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Local storm report, Aug 7, 3:21 AM EDT, 59 minutes before

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Special weather statement, Aug 7, 4:20 AM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 10:52 PM EDT	Severe Thunderstorm Warning	RLX	Buchanan, Dickenson	38 min
Aug 6, 11:32 PM EDT	Special Weather Statement	RLX	Buchanan	28 min
Aug 7, 12:18 AM EDT	Special Weather Statement	RLX	Dickenson	27 min
Aug 7, 12:37 AM EDT	Flash Flood Warning	RLX	Buchanan	113 min
Aug 7, 1:04 AM EDT	Special Weather Statement	RLX	Buchanan, Dickenson	26 min
Aug 7, 1:13 AM EDT	Flash Flood Warning	RLX	Buchanan, Dickenson	3 hr
Aug 7, 4:22 PM EDT	Special Weather Statement	RLX	Highland	38 min

Nearby

Special Weather Statements in West Virginia, 2020 Every special weather statement in 2020

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.