Alert archive / Virginia / Winter Storm Watches in 2017
Winter Storm Watch 3, NWS Blacksburg, VA
NWS Blacksburg, VA issued this winter storm watch at Mar 12, 2017, 4:04 PM EDT for 7 counties in Virginia; Greenbrier County, West Virginia. It took effect at Mar 13, 2017, 6:00 PM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Mar 12, 2017, 4:04 PM EDT (20:04 UTC)
- In effect from
- Mar 13, 2017, 6:00 PM EDT
- Expired
- Mar 12, 2017, 10:48 PM EDT
- In force
- Issued by
- NWS Blacksburg, VA
Counties Alleghany County, VA, Amherst County, VA, Bath County, VA, City of Buena Vista, VA, City of Covington, VA, City of Lexington, VA, Rockbridge County, VA, Greenbrier County, WV
The radar
The Roanoke radar (KFCX), 101 km from the middle of the area, began a volume at 20:03 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.1 hours before the alert went out and 237 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1574 m above ground
- 0-6 km bulk shear
- 88 kt
- 0-1 km storm-relative helicity
- -128 m²/s²
- 0-3 km storm-relative helicity
- -31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 12, 1:54 PM EDT, 2 hours 10 minutes earlier.
Area forecast discussion, Mar 12, 1:54 PM EDT, 2 hours 10 minutes before
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</html>Hazardous weather outlook, Mar 12, 10:11 AM EDT, 5 hours 53 minutes before
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</html>Nearby
Winter Storm Watches in Virginia, 2017Winter Storm Watches in West Virginia, 2017Every 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.