Alert archive / West Virginia / Special Weather Statements in 2017

Special Weather Statement, NWS Charleston, WV

October 15, 20176 counties in West Virginia

NWS Charleston, WV issued this special weather statement at Oct 15, 2017, 8:34 PM EDT for 6 counties in West Virginia. It was in force for 56 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: Oct 15, 2017, 8:34 PM EDT (00:34 UTC)
Expired: Oct 15, 2017, 9:30 PM EDT
In force: 56 min
Issued by: NWS Charleston, WV

Counties Boone County, WV, Fayette County, WV, Logan County, WV, Nicholas County, WV, Raleigh County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 88 km from the middle of the area, began a volume at 00:34 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, 0.6 hours before the alert went out and 144 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1945 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: 101 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 Oct 15, 7:55 PM EDT, 39 minutes earlier.

Area forecast discussion, Oct 15, 7:55 PM EDT, 39 minutes before

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Hazardous weather outlook, Oct 15, 2:52 PM EDT, 5 hours 42 minutes before

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In the hours before

Special weather statement, Oct 15, 4:09 PM EDT, 4 hours 25 minutes before

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Special weather statement, Oct 15, 5:01 PM EDT, 3 hours 33 minutes before

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Special weather statement, Oct 15, 6:04 PM EDT, 2 hours 30 minutes before

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Special weather statement, Oct 15, 7:36 PM EDT, 58 minutes before

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Special weather statement, Oct 15, 7:45 PM EDT, 49 minutes before

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Special weather statement, Oct 15, 8:34 PM 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
Oct 15, 8:42 PM EDT	Special Weather Statement	RLX	Pocahontas, Randolph, Webster	63 min
Oct 16, 3:12 AM EDT	Freeze Watch	RLX	Barbour, Fayette, Harrison, Nicholas, Pocahontas, Randolph and 3 more	8 hr
Oct 16, 11:10 AM EDT	Frost Advisory	RLX	Boone, Braxton, Cabell, Calhoun, Clay, Doddridge and 20 more	23 hr
Oct 16, 11:10 AM EDT	Freeze Warning	RLX	Barbour, Harrison, Nicholas, Pocahontas, Randolph, Taylor and 2 more	23 hr

Nearby

Special Weather Statements in West Virginia, 2017 Every special weather statement in 2017

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.