Alert archive / West Virginia / Wind Chill Advisories in 2018

Wind Chill Advisory 5, NWS Blacksburg, VA

January 13, 2018Greenbrier County, West Virginia

NWS Blacksburg, VA issued this wind chill advisory at Jan 13, 2018, 9:53 AM EST for Greenbrier County, West Virginia. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: Jan 13, 2018, 9:53 AM EST (14:53 UTC)
Expired: Jan 14, 2018, 10:00 AM EST
In force: 24 hr
Issued by: NWS Blacksburg, VA

County Greenbrier County, WV

The radar

The Roanoke radar (KFCX), 104 km from the middle of the area, began a volume at 14:58 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, 2.9 hours before the alert went out and 118 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: 869 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -133 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Blacksburg, VA wrote its last area forecast discussion before this wind chill advisory went out at Jan 13, 6:07 AM EST, 3 hours 46 minutes earlier.

Area forecast discussion, Jan 13, 6:07 AM EST, 3 hours 46 minutes before

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Hazardous weather outlook, Jan 13, 4:41 AM EST, 5 hours 12 minutes before

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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 12, 7:04 PM EST	Special Weather Statement	RNK	Carroll, Craig, Giles, Montgomery, Pulaski, City of Galax and 1 more	41 min
Jan 12, 7:32 PM EST	Special Weather Statement	RNK	Franklin	13 min
Jan 12, 7:46 PM EST	Special Weather Statement	RNK	Bedford, Botetourt, Craig, Montgomery, Roanoke, City of Roanoke and 1 more	59 min
Jan 12, 7:49 PM EST	Special Weather Statement	RNK	Alleghany, Bath, City of Covington	56 min
Jan 12, 7:51 PM EST	Special Weather Statement	RNK	Campbell, Halifax, Pittsylvania, City of Danville, City of Lynchburg	54 min
Jan 12, 8:40 PM EST	Special Weather Statement	RNK	Charlotte	65 min
Jan 12, 7:06 PM EST	Special Weather Statement	RNK	Greenbrier	39 min

Nearby

Wind Chill Advisories in West Virginia, 2018 Every wind chill advisory 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.