Alert archive / West Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Charleston, WV

July 17, 2018Boone County, West Virginia

NWS Charleston, WV issued this special weather statement at Jul 17, 2018, 4:11 PM EDT for Boone County, West Virginia. It was in force for 34 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
Jul 17, 2018, 4:11 PM EDT (20:11 UTC)
Expired
Jul 17, 2018, 4:45 PM EDT
In force
34 min
Issued by
NWS Charleston, WV

County Boone County, WV

The radar

The Charleston,WV radar (KRLX), 48 km from the middle of the area, began a volume at 20:13 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 12:00Z, 8.2 hours before the alert went out and 203 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 12:00Z on 2018-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 156 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 12:00Z on 2018-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
156 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
713 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 17, 3:37 PM EDT, 34 minutes earlier.

Area forecast discussion, Jul 17, 3:37 PM EDT, 34 minutes before
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Hazardous weather outlook, Jul 17, 4:10 AM EDT, 12 hours 1 minute before
Hazardous Weather Outlook
National Weather Service Charleston WV
410 AM EDT Tue Jul 17 2018

KYZ101>103-105-OHZ066-067-075-076-083>087-VAZ003-004-WVZ005>011-
013>020-024>034-039-040-515>526-180815-
Greenup-Carter-Boyd-Lawrence KY-Perry-Morgan-Athens-Washington-
Jackson OH-Vinton-Meigs-Gallia-Lawrence OH-Dickenson-Buchanan-Wayne-
Cabell-Mason-Jackson WV-Wood-Pleasants-Tyler-Lincoln-Putnam-Kanawha-
Roane-Wirt-Calhoun-Ritchie-Doddridge-Mingo-Logan-Boone-Clay-Braxton-
Gilmer-Lewis-Harrison-Taylor-McDowell-Wyoming-Upshur-Barbour-
Northwest Raleigh-Southeast Raleigh-Northwest Fayette-
Southeast Fayette-Northwest Nicholas-Southeast Nicholas-
Northwest Webster-Southeast Webster-Northwest Pocahontas-
Southeast Pocahontas-Northwest Randolph-Southeast Randolph-
410 AM EDT Tue Jul 17 2018

This Hazardous Weather Outlook is for northeast Kentucky, southeast
Ohio, southwest Virginia and much of West Virginia.

.DAY ONE...Today and Tonight.

Expect scattered showers and thunderstorms today. The stronger
storms may produce locally heavy downpours and gusty winds.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Hazardous weather is not not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 17, 3:08 PM EDT, 1 hour 3 minutes before
Special Weather Statement
National Weather Service Charleston WV
308 PM EDT TUE JUL 17 2018

WVZ015-517-171945-
Kanawha-Northwest Fayette-
308 PM EDT TUE JUL 17 2018

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN KANAWHA AND WEST
CENTRAL FAYETTE COUNTIES...

At 307 PM EDT, a strong thunderstorm was located 7 miles south of
East Bank, or 17 miles east of Madison, moving southeast at 20 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Montgomery, Glasgow, Smithers, Pratt, Burnwell, Powellton, Handley,
Leewood, Dawes, Sharon and Eskdale.

This includes West Virginia Turnpike between mile markers 63 and 82.

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

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

LAT...LON 3797 8142 3798 8146 3803 8146 3806 8148
      3807 8149 3806 8152 3808 8154 3811 8152
      3812 8155 3813 8154 3814 8155 3822 8140
      3811 8111 3797 8136
TIME...MOT...LOC 1907Z 299DEG 19KT 3812 8148

08
Special weather statement, Jul 17, 3:57 PM EDT, 14 minutes before
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Special weather statement, Jul 17, 4:11 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 3:08 PM EDTSpecial Weather StatementRLXFayette37 min
Jul 17, 3:57 PM EDTSpecial Weather StatementRLXRaleigh33 min
Jul 17, 4:34 PM EDTSpecial Weather StatementRLXWyoming56 min

Nearby

Special Weather Statements in West Virginia, 2018Every special weather statement in 2018

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.