Alert archive / Virginia / Wind Chill Advisories in 2017

Wind Chill Advisory 4, NWS Baltimore/Washington

March 14, 201712 counties in Virginia; Pendleton County, West Virginia

NWS Baltimore/Washington issued this wind chill advisory at Mar 14, 2017, 3:00 PM EDT for 12 counties in Virginia; Pendleton County, West Virginia. It took effect at Mar 14, 2017, 7:00 PM EDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Mar 14, 2017, 3:00 PM EDT (19:00 UTC)
In effect from: Mar 14, 2017, 7:00 PM EDT
Expired: Mar 15, 2017, 10:00 AM EDT
In force: 15 hr
Issued by: NWS Baltimore/Washington

Counties Albemarle County, VA, Amherst County, VA, Augusta County, VA, Greene County, VA, Highland County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockbridge County, VA, Rockingham County, VA, Warren County, VA, Pendleton County, WV

The radar

The Sterling radar (KLWX), 138 km from the middle of the area, began a volume at 19:00 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, 7.0 hours before the alert went out and 136 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: 617 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -268 m²/s²
0-3 km storm-relative helicity: -65 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 Mar 14, 10:19 AM EDT, 4 hours 41 minutes earlier.

Area forecast discussion, Mar 14, 10:19 AM EDT, 4 hours 41 minutes before

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Hazardous weather outlook, Mar 14, 1:58 PM EDT, 1 hour 2 minutes before

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In the hours before

Local storm report, Mar 14, 2:15 PM EDT, 45 minutes before

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Local storm report, Mar 14, 2:28 PM EDT, 32 minutes before

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Local storm report, Mar 14, 2:30 PM EDT, 30 minutes before

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Local storm report, Mar 14, 2:31 PM EDT, 29 minutes before

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Local storm report, Mar 14, 2:41 PM EDT, 19 minutes before

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Local storm report, Mar 14, 2:42 PM EDT, 18 minutes before

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The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 14, 4:40 AM EDT	Gale Warning	LWX		43 hr
Mar 14, 2:05 PM EDT	Winter Weather Advisory	LWX	Highland	24 hr
Mar 14, 12:55 AM EDT	Wind Advisory	LWX	Calvert, Saint Mary's	13 hr

Nearby

Wind Chill Advisories in Virginia, 2017 Wind Chill Advisories in West Virginia, 2017 Every wind chill advisory 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.