Alert archive / Virginia / Winter Storm Warnings in 2010
Winter Storm Warning 17, NWS Blacksburg, VA
NWS Blacksburg, VA issued this winter storm warning at Dec 25, 2010, 4:52 AM EST for 13 counties in Virginia; 8 counties in North Carolina; Mercer County, Summers County, West Virginia. It was in force for 62 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 25, 2010, 4:52 AM EST (09:52 UTC)
- Expired
- Dec 27, 2010, 7:15 PM EST
- In force
- 62 hr
- Issued by
- NWS Blacksburg, VA
All 23 counties
Ashe County, NC, Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Bland County, VA, Campbell County, VA, Charlotte County, VA, City of Danville, VA, City of Lynchburg, VA, City of Martinsville, VA, Grayson County, VA, Halifax County, VA, Henry County, VA, Patrick County, VA, Pittsylvania County, VA, Smyth County, VA, Tazewell County, VA, Mercer County, WV, Summers County, WV
The radar
The Roanoke radar (KFCX), 30 km from the middle of the area, began a volume at 09:57 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 00:00Z, 9.9 hours before the alert went out and 354 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
- 1414 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 74 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 warning 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 warning went out at Dec 25, 4:30 AM EST, 22 minutes earlier.
Area forecast discussion, Dec 25, 4:30 AM EST, 22 minutes before
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</html>Hazardous weather outlook, Dec 24, 4:25 PM EST, 12 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 425 PM EST FRI DEC 24 2010 WVZ043-045-252015- SUMMERS-GREENBRIER- 425 PM EST FRI DEC 24 2010 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH MONDAY AFTERNOON ABOVE 2500 FEET... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. AN UPPER LEVEL DISTURBANCE WILL APPROACH THE WESTERN SLOPES OF THE APPALACHIANS LATE TONIGHT...BRINGING SOME VERY LIGHT ACCUMULATIONS OF SNOW BETWEEN MIDNIGHT AND DAWN. ACCUMULATIONS WILL GENERALLY BE AN INCH OR LESS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. AN UPPER LEVEL DISTURBANCE WILL TRACK ACROSS THE REGION SATURDAY...CONTINUING THE CHANCES OF VERY LIGHT SNOW ACCUMULATIONS. UP TO 2 INCHES OF ADDITIONAL ACCUMULATION IS POSSIBLE THROUGH SATURDAY EVENING...WITH THE HIGHER AMOUNTS ON THE WESTERN SLOPES. BLUSTERY WINDS BEHIND THE SYSTEM WILL PULL VERY COLD AIR BACK INTO THE REGION SATURDAY NIGHT INTO EARLY NEXT WEEK...RESULTING IN VERY COLD WIND CHILLS ALONG WITH MORE SIGNIFICANT SNOWFALL ACCUMULATIONS AND BLOWING SNOW OVER THE HIGHER WESTERN SLOPES OF THE APPALACHIANS. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER SNOWFALL REPORTS ARE APPRECIATED. VAZ007-009-010-015-WVZ042-252015- TAZEWELL-SMYTH-BLAND-GRAYSON-MERCER- 425 PM EST FRI DEC 24 2010 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH MONDAY AFTERNOON ABOVE 2500 FEET... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. AN UPPER LEVEL DISTURBANCE WILL APPROACH THE WESTERN SLOPES OF THE APPALACHIANS LATE TONIGHT...BRINGING SOME VERY LIGHT ACCUMULATIONS OF SNOW BETWEEN MIDNIGHT AND DAWN. ACCUMULATIONS WILL GENERALLY BE AN INCH OR LESS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. AN UPPER LEVEL DISTURBANCE WILL TRACK ACROSS THE REGION SATURDAY...CONTINUING THE CHANCES OF VERY LIGHT SNOW ACCUMULATIONS. UP TO 2 INCHES OF ADDITIONAL ACCUMULATION IS POSSIBLE THROUGH SATURDAY EVENING...WITH THE HIGHER AMOUNTS ON THE WESTERN SLOPES. BLUSTERY WINDS BEHIND THE SYSTEM WILL PULL VERY COLD AIR BACK INTO THE REGION SATURDAY NIGHT INTO EARLY NEXT WEEK...RESULTING IN VERY COLD WIND CHILLS ALONG WITH MORE SIGNIFICANT SNOWFALL ACCUMULATIONS AND BLOWING SNOW OVER THE HIGHER WESTERN SLOPES OF THE APPALACHIANS. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER SNOWFALL REPORTS ARE APPRECIATED. NCZ001-018-252015- ASHE-WATAUGA- 425 PM EST FRI DEC 24 2010 ...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH MONDAY AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST NORTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. AN UPPER LEVEL DISTURBANCE WILL APPROACH THE WESTERN SLOPES OF THE APPALACHIANS LATE TONIGHT...BRINGING SOME VERY LIGHT ACCUMULATIONS OF SNOW BETWEEN MIDNIGHT AND DAWN. ACCUMULATIONS WILL GENERALLY BE AN INCH OR LESS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. AN UPPER LEVEL DISTURBANCE WILL TRACK ACROSS THE REGION SATURDAY...CONTINUING THE CHANCES OF VERY LIGHT SNOW ACCUMULATIONS. UP TO AN INCH OR SO OF ADDITIONAL ACCUMULATION IS POSSIBLE THROUGH SATURDAY EVENING...WITH THE HIGHER AMOUNTS ON THE WESTERN SLOPES. BLUSTERY WINDS BEHIND THE SYSTEM WILL PULL VERY COLD AIR BACK INTO THE REGION SATURDAY NIGHT INTO EARLY NEXT WEEK...RESULTING IN VERY COLD WIND CHILLS ALONG WITH MORE SIGNIFICANT SNOWFALL ACCUMULATIONS AND BLOWING SNOW OVER THE HIGHER WESTERN SLOPES OF THE APPALACHIANS. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER SNOWFALL REPORTS ARE APPRECIATED. NCZ002-VAZ011>014-016>020-022>024-WVZ044-252015- ALLEGHANY NC-GILES-WYTHE-PULASKI-MONTGOMERY-CARROLL-FLOYD-CRAIG- ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-MONROE- 425 PM EST FRI DEC 24 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST NORTH CAROLINA...SOUTHWEST VIRGINIA...WEST CENTRAL VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. AN UPPER LEVEL DISTURBANCE WILL APPROACH THE APPALACHIANS BY LATE TONIGHT...POSSIBLY BRINGING SOME VERY LIGHT ACCUMULATIONS OF SNOW BEFORE DAWN. ANY SNOW ACCUMULATIONS BY DAWN WILL LIKELY BE LESS THAN HALF AN INCH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. AN UPPER LEVEL DISTURBANCE WILL TRACK ACROSS THE REGION SATURDAY AND SATURDAY EVENING...BRINGING THE CHANCE FOR VERY LIGHT SNOW INTO SATURDAY NIGHT. ADDITIONAL SNOW ACCUMULATIONS WILL BE AROUND AN INCH. BLUSTERY WINDS BEHIND THE SYSTEM WILL PULL VERY COLD AIR BACK INTO THE REGION SATURDAY NIGHT INTO EARLY NEXT WEEK...RESULTING IN VERY COLD WIND CHILLS ALONG WITH SNOW SHOWERS AND FLURRIES. SOME LOCATIONS...ESPECIALLY HIGHER WEST FACING RIDGES...COULD EXPERIENCE ADDITIONAL LIGHT ACCUMULATIONS OF SNOW THROUGH SUNDAY NIGHT OR EARLY MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER SNOWFALL REPORTS ARE APPRECIATED. NCZ003>006-019-020-VAZ032>035-043>047-058-059-252015- SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-PATRICK-FRANKLIN- BEDFORD-AMHERST-HENRY-PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM- HALIFAX-CHARLOTTE- 425 PM EST FRI DEC 24 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA...SOUTH CENTRAL VIRGINIA...SOUTHWEST VIRGINIA AND WEST CENTRAL VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. AN UPPER LEVEL DISTURBANCE WILL APPROACH THE APPALACHIANS BY LATE TONIGHT...POSSIBLY BRINGING SOME VERY LIGHT ACCUMULATIONS OF SNOW BEFORE DAWN. ANY SNOW ACCUMULATIONS BY DAWN WILL LIKELY BE LESS THAN HALF AN INCH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. AN UPPER LEVEL DISTURBANCE WILL TRACK ACROSS THE REGION SATURDAY AND SATURDAY NIGHT...BRINGING THE CHANCE FOR VERY LIGHT SNOW INTO SATURDAY NIGHT. ADDITIONAL SNOW ACCUMULATIONS WILL BE AN INCH OR LESS. BLUSTERY WINDS BEHIND THE SYSTEM WILL PULL VERY COLD AIR BACK INTO THE REGION SATURDAY NIGHT INTO EARLY NEXT WEEK...RESULTING IN VERY COLD WIND CHILLS ALONG WITH SNOW SHOWERS AND FLURRIES. SOME LOCATIONS...ESPECIALLY HIGHER WEST FACING RIDGES...COULD EXPERIENCE ADDITIONAL LIGHT ACCUMULATIONS OF SNOW THROUGH SUNDAY NIGHT OR EARLY MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER SNOWFALL REPORTS ARE APPRECIATED. RCS
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 4:52 AM EST | Winter Weather Advisory | RNK | Alleghany, Amherst, Appomattox, Bath, Bedford, Bland and 25 more | 32 hr |
| Dec 25, 2:22 PM EST | Special Weather Statement | RNK | Carroll, Charlotte, Franklin, Grayson, Halifax, Henry and 5 more | 113 min |
| Dec 25, 3:22 PM EST | Special Weather Statement | RNK | Carroll, Charlotte, Floyd, Franklin, Halifax, Henry and 5 more | 113 min |
| Dec 25, 5:10 PM EST | Special Weather Statement | RNK | Campbell, Henry, Patrick, Pittsylvania, City of Martinsville | 80 min |
| Dec 25, 6:17 PM EST | Special Weather Statement | RNK | Amherst, Bedford, Campbell, Franklin, Henry, Patrick and 3 more | 88 min |
Nearby
Winter Storm Warnings in Virginia, 2010Winter Storm Warnings in North Carolina, 2010Winter Storm Warnings in West Virginia, 2010Every winter storm warning in 2010
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.