Alert archive / North Carolina / Winter Storm Watches in 2017

Winter Storm Watch 2, NWS Blacksburg, VA

March 10, 2017Ashe County, Watauga County, North Carolina

NWS Blacksburg, VA issued this winter storm watch at Mar 10, 2017, 5:06 AM EST for Ashe County, Watauga County, North Carolina. It took effect at Mar 11, 2017, 7:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Mar 10, 2017, 5:06 AM EST (10:06 UTC)
In effect from: Mar 11, 2017, 7:00 PM EST
Expired: Mar 10, 2017, 2:36 PM EST
In force
Issued by: NWS Blacksburg, VA

Counties Ashe County, NC, Watauga County, NC

The radar

The Roanoke radar (KFCX), 141 km from the middle of the area, began a volume at 10:09 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 10.1 hours before the alert went out and 155 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: 3561 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 192 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 winter storm watch 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 winter storm watch went out at Mar 10, 12:29 AM EST, 4 hours 37 minutes earlier.

Area forecast discussion, Mar 10, 12:29 AM EST, 4 hours 37 minutes before

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Hazardous weather outlook, Mar 9, 3:16 PM EST, 13 hours 50 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 10, 5:03 AM EST	Wind Advisory	RNK	Alleghany, Bath, Botetourt, Carroll, Craig, Floyd and 14 more	16 hr
Mar 10, 2:36 PM EST	Winter Weather Advisory	RNK	Carroll, Grayson, City of Galax	42 hr
Mar 10, 2:36 PM EST	Winter Storm Warning	RNK	Ashe, Watauga	13 hr

Nearby

Winter Storm Watches in North Carolina, 2017 Every winter storm watch 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.