Alert archive / Virginia / Winter Storm Watches in 2012
Winter Storm Watch 6, NWS Blacksburg, VA
NWS Blacksburg, VA issued this winter storm watch at Dec 24, 2012, 3:53 PM EST for 4 counties in Virginia. It took effect at Dec 26, 2012, 1:00 AM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 24, 2012, 3:53 PM EST (20:53 UTC)
- In effect from
- Dec 26, 2012, 1:00 AM EST
- Expired
- Dec 25, 2012, 5:32 AM EST
- In force
- Issued by
- NWS Blacksburg, VA
Counties Bath County, VA, City of Buena Vista, VA, City of Lexington, VA, Rockbridge County, VA
The radar
The Roanoke radar (KFCX), 114 km from the middle of the area, began a volume at 20:54 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 12:00Z, 8.9 hours before the alert went out and 199 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
- 1558 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 49 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 Dec 24, 3:49 PM EST, 4 minutes earlier.
Area forecast discussion, Dec 24, 3:49 PM EST, 4 minutes before
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</html>Hazardous weather outlook, Dec 24, 9:54 AM EST, 5 hours 59 minutes before
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Local storm report, Dec 24, 11:19 AM EST, 4 hours 34 minutes before
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</html>Local storm report, Dec 24, 11:23 AM EST, 4 hours 30 minutes before
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</html>Local storm report, Dec 24, 11:27 AM EST, 4 hours 26 minutes before
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Winter Storm Watches in Virginia, 2012Winter Storm Watches in West Virginia, 2012Every winter storm watch in 2012
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.