Alert archive / Virginia / Wind Chill Advisories in 2016

Wind Chill Advisory 2, NWS Baltimore/Washington

January 17, 201621 counties in Virginia; 9 counties in Maryland; 8 counties in West Virginia

NWS Baltimore/Washington issued this wind chill advisory at Jan 17, 2016, 3:44 AM EST for 21 counties in Virginia; 9 counties in Maryland; 8 counties in West Virginia. It took effect at Jan 17, 2016, 11:00 PM EST. It was in force for 37 hr.

The area

The counties it named.

The facts

Issued: Jan 17, 2016, 3:44 AM EST (08:44 UTC)
In effect from: Jan 17, 2016, 11:00 PM EST
Expired: Jan 19, 2016, 12:00 PM EST
In force: 37 hr
Issued by: NWS Baltimore/Washington

All 38 counties

Allegany County, MD, Baltimore County, MD, Carroll County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Washington County, MD, Albemarle County, VA, Amherst County, VA, Augusta County, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, Loudoun County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV, Pendleton County, WV

The radar

The Sterling radar (KLWX), 69 km from the middle of the area, began a volume at 08:44 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, 8.7 hours before the alert went out and 214 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: 687 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 110 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 Baltimore/Washington wrote its last area forecast discussion before this wind chill advisory went out at Jan 16, 9:24 PM EST, 6 hours 20 minutes earlier.

Area forecast discussion, Jan 16, 9:24 PM EST, 6 hours 20 minutes before

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Hazardous weather outlook, Jan 16, 4:36 PM EST, 11 hours 8 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        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 Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 17, 6:07 PM EST	Gale Warning	LWX		18 hr

Nearby

Wind Chill Advisories in Virginia, 2016 Wind Chill Advisories in Maryland, 2016 Wind Chill Advisories in West Virginia, 2016 Every wind chill advisory in 2016

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.