Alert archive / Virginia / High Wind Watches in 2010
High Wind Watch 1, NWS Blacksburg, VA
NWS Blacksburg, VA issued this high wind watch at Feb 9, 2010, 3:56 AM EST for 37 counties in Virginia; 9 counties in North Carolina; Mercer County, Monroe County, Summers County, West Virginia. It took effect at Feb 10, 2010, 12:00 AM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 9, 2010, 3:56 AM EST (08:56 UTC)
- In effect from
- Feb 10, 2010, 12:00 AM EST
- Expired
- Feb 9, 2010, 9:29 PM EST
- In force
- Issued by
- NWS Blacksburg, VA
All 49 counties
Alleghany County, NC, Ashe County, NC, Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Alleghany County, VA, Amherst County, VA, Appomattox County, VA, Bath County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Carroll County, VA, Charlotte County, VA, City of Buena Vista, VA, City of Covington, VA, City of Danville, VA, City of Galax, VA, City of Lexington, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Floyd County, VA, Franklin County, VA, Giles County, VA, Grayson County, VA, Halifax County, VA, Henry County, VA, Montgomery County, VA, Patrick County, VA, Pittsylvania County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Smyth County, VA, Tazewell County, VA, Wythe County, VA, Mercer County, WV, Monroe County, WV, Summers County, WV
The radar
The Roanoke radar (KFCX), 10 km from the middle of the area, began a volume at 09:00 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 00:00Z, 8.9 hours before the alert went out and 61 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
- 2839 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high wind 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 high wind watch went out at Feb 9, 12:37 AM EST, 3 hours 19 minutes earlier.
Area forecast discussion, Feb 9, 12:37 AM EST, 3 hours 19 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BLACKSBURG VA
1237 AM EST TUE FEB 9 2010
.SYNOPSIS...
HIGH PRESSURE WILL SLIDE EAST TONIGHT...WHILE ANOTHER WINTER
STORM HEADS TOWARD THE REGION. SNOW WILL START IN THE SOUTHWEST
EARLY TUESDAY WITH A LIKELY CHANGEOVER TO MIXED PRECIPITATION
ACROSS MUCH OF THE AREA. A STRONG ARCTIC COLD FRONT WILL PUSH IN
BEHIND THIS SYSTEM WITH VERY STRONG WINDS AND COLD TEMPERATURES BY
MIDWEEK.
&&
.NEAR TERM /UNTIL 6 AM THIS MORNING/...
WINTER WEATHER HEADLINE INFORMATION HAS BEEN UPDATED.
DEEP MOISTURE INCREASES FROM WEST TO EAST WITH THE ONSET OF THE
PRECIPITATION IN THE FAR WEST STILL AFTER 06Z. ALL MODELS STILL HAVE
SNOW AT THE BEGINNING OF THE PRECIPITATION. UNTIL SOME THICKER
CLOUDS COME IN LATER TONIGHT TEMPERATURES WILL BE ABLE TO DROP THIS
EVENING...SO HAVE LOWERED MINIMUM TEMPERATURES FOR MOST LOCATIONS.
&&
.SHORT TERM /6 AM THIS MORNING THROUGH WEDNESDAY NIGHT/...
UPPER TROF CROSSES THE FORECAST AREA ON WEDNESDAY. AT THE SURFACE
LOW PRESSURE MOVES THROUGH THE OHIO VALLEY AND PUSHES AND STRONG
COLD FRONT THROUGH THE COUNTY WARNING AREA JUST BEFORE THE SECONDARY
LOW OFF THE COAST STARTS TO DEEPEN RAPIDLY.
PRECIPITATION TYPE IS STILL QUESTIONABLE DEPENDING ON HOW WARM THE
TEMPERATURES ALOFT GET ON TUESDAY AFTERNOON. THE NAM HAS WARMER
TEMPERATURES ALOFT BUT BY THAT TIME SURFACE TEMPERATURES ARE ABOVE
FREEZING. THE GFS BRINGS IN THE WARMER TEMPERATURES ALOFT EARLIER IN
THE DAY BUT HAS NOT AS STRONG AS THE NAM. WILL TAKE A BLEND OF
TEMPERATURE PROFILES TO DETERMINE PRECIPITATION TYPE. MULTIPLE
WINTER WEATHER HEADLINES WILL BE ISSUED WITH THE 4PM FORECAST.
THE COMBINATION OF STRONG PRESSURE RISES DUE IN PART TO THE
DEEPENING COASTAL LOW...STRONG COLD AIR ADVECTION WITH 850 MB
TEMPERATURES DROPPING INTO THE -16 TO -12 RANGE...AND A NORTHWEST
850 MB JET IN THE 45 TO 65 KNOT RANGE WILL RESULT IN ADVISORY TO
POSSIBLY WARNING CRITERIA WINDS TUESDAY NIGHT INTO WEDNESDAY NIGHT.
WILL ALSO HIGHLIGHT WIND CHILLS IN THE HAZARDOUS WEATHER OUTLOOK.
UPSLOPE SNOW SHOWERS WILL BEGIN BY WEDNESDAY MORNING WITH A GOOD
TRAJECTORY OFF OF LAKE MICHIGAN ON WEDNESDAY NIGHT...ESPECIALLY IN
TO SOUTHEAST WEST VIRGINIA.
&&
.LONG TERM /THURSDAY THROUGH MONDAY/...
VERY STRONG WINDS WILL CONTINUE EARLY THURSDAY MORNING ALONG WITH
UPSLOPE SNOW SHOWERS. AS THE DAY PROGRESSES...THE PRESSURE
GRADIENT WILL BEGIN TO WEAKEN AND WE WILL SEE A TREND TOWARD
DECREASING WINDS SPEEDS. THE SNOW SHOWERS IN THE MOUNTAINS WILL ALSO
EXPERIENCE A TREND IN DECREASING COVERAGE...BUT ARE NOT EXPECTED TO
COMPLETELY COME TO AN END UNTIL THURSDAY NIGHT. WIND CHILLS WILL
CONTINUE TO BE ON THE LOW SIDE WITH SOME AREAS OF THE MOUNTAINS
SEEING VALUES IN THE 0 TO -5 F RANGE RIGHT AFTER SUNRISE.
HIGH PRESSURE BUILDS INTO THE AREA ON FRIDAY ALL WHILE A DEEPENING
AREA OF LOW PRESSURE SWINGS SOUTH OF THE AREA THROUGH THE GULF COAST
STATES. PRECIPITATION FROM THAT SYSTEM IS EXPECTED TO REMAIN SOUTH
OF THE AREA.
NORTHWEST FLOW INCREASES AGAIN OVER THE WEEKEND AS ANOTHER SHORTWAVE
TROUGH SPINS OUT OF THE GREAT LAKES AND THROUGH OUR REGION. TIMING
OF THIS FEATURE VARIES AMONG THE MODELS...BUT THE GENERAL CONSENSUS
IS A RETURN OF UPSLOPE SNOW SHOWERS FROM SE WV SOUTH INTO THE
NORTHERN MOUNTAINS OF NORTH CAROLINA SATURDAY THROUGH MONDAY.
FOR TEMPERATURES DURING THE PERIOD HAVE FAVORED NUMBERS IN LINE WITH
THE LATEST HPC GUIDANCE.
&&
.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
FLIGHT RULES WILL DROP VERY QUICKLY BY 12Z TUE ACROSS THE
AREA...AS A STORM SYSTEM PUSHES EAST FROM THE MISSISSIPPI VALLEY
INTO THE OHIO AND TENNESSEE VALLEYS. CONDITIONS WILL BECOME MVFR
TOWARD 09Z IN SE WV WITH LIGHT SNOW EXPECTED AT BLF...THEN IFR OR
LOWER FOR THE REMAINDER OF THE PERIOD. LWB WILL SEE THE SNOW
ARRIVE AN HOUR OR TWO LATER. ROA/LYH/DAN WILL SEE SNOW ARRIVE WITH
MVFR TO IFR CIGS IN THE 12-14Z TIME FRAME. MODEL SOUNDINGS
SUGGESTING SOME SLEET MIXING IN AND POTENTIAL FOR FREEZING RAIN
EXISTS AT DAN DURING THE AFTERNOON. ALSO LATE IN THE
PERIOD...WINDS IN THE 1-3KFT RANGE WILL BE INCREASING FROM THE
SOUTH...SO LOW LVL WIND SHEAR COULD BECOME AN ISSUE...BUT LEFT OUT
OF THE TAFS FOR NOW.
LOOKING AT POOR FLIGHT CONDITIONS BEYOND THIS PERIOD INTO TUESDAY
NIGHT AND EARLY WED OUT EAST...WITH FLOW BEHIND THE FRONT KICKING
UP SEVERAL NOTCHES WITH WEST TO NORTHWEST WINDS ACCELERATING TO 20
TO 30 KNOTS...WITH GUSTS TO 40 KNOTS POSSIBLE MAINLY OVER ROANOKE.
UPSLOPE SNOW SHOWERS AND CLOUDS WILL REMAIN INTO THURSDAY OVER BLF/LWB.
SHOULD SEE SOME IMPROVEMENT BY FRIDAY IN SE WV AS HIGH PRESSURE
MOVES IN.
&&
.EQUIPMENT...
MALFUNCTION OF THE NEW CEILOMETERS AT LYH...AND BLF HAS BEEN
REPORTED BY NATIONAL WEATHER SERVICE EASTERN REGION. THE CEILING
AT BLF IS NOW BEING REPORTED...AND APPEARS IN LINE WITH
SURROUNDING OBSERVATIONS. IF A DISCREPANCY IS NOTED...THE
CEILOMETER WILL NEED TO BE LOGGED OUT AGAIN. THE CEILING AT LYH
MAY NOT BE REPRESENTATIVE DURING THE OVERNIGHT HOURS WHEN THE
CONTROL TOWER IS CLOSED.
&&
.RNK WATCHES/WARNINGS/ADVISORIES...
VA...WINTER WEATHER ADVISORY UNTIL 4 AM EST WEDNESDAY FOR
VAZ010>014-016>018.
WINTER STORM WARNING UNTIL 11 AM EST WEDNESDAY FOR VAZ019-020.
WINTER WEATHER ADVISORY UNTIL 11 AM EST WEDNESDAY FOR VAZ007-
009-015.
WINTER WEATHER ADVISORY FROM 5 AM EARLY THIS MORNING TO 5 AM
EST WEDNESDAY FOR VAZ022-032>034-043>047-058-059.
WINTER STORM WARNING UNTIL 5 AM EST WEDNESDAY FOR VAZ023-024-
035.
NC...WINTER WEATHER ADVISORY UNTIL 11 AM EST WEDNESDAY FOR NCZ001-
002-018.
WINTER WEATHER ADVISORY FROM 5 AM EARLY THIS MORNING TO 5 AM
EST WEDNESDAY FOR NCZ003>006-019-020.
WV...WINTER WEATHER ADVISORY UNTIL 4 AM EST WEDNESDAY FOR WVZ044.
WINTER STORM WARNING UNTIL 11 AM EST WEDNESDAY FOR WVZ045.
WINTER WEATHER ADVISORY UNTIL 11 AM EST WEDNESDAY FOR WVZ042-
043.
&&
SYNOPSIS...KK/PC
NEAR TERM...AMS/KK
SHORT TERM...AMS
LONG TERM...DS
AVIATION...REB/WP
EQUIPMENT...Hazardous weather outlook, Feb 8, 11:22 PM EST, 4 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BLACKSBURG VA 1122 PM EST MON FEB 8 2010 VAZ019-020-WVZ045-100430- ALLEGHANY VA-BATH-GREENBRIER- 1122 PM EST MON FEB 8 2010 ...WINTER STORM WARNING IN EFFECT UNTIL 11 AM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. WEDNESDAY THROUGH THURSDAY...STRONG NORTHWEST WINDS WILL KEEP THE TEMPERATURES VERY COLD...WITH SNOW SHOWERS EXPECTED FROM TIME TO TIME. A WIND AND...OR WIND CHILL ADVISORY MAY BE NEEDED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME BUT SNOW REPORTS ARE REQUESTED. VAZ023-024-035-100430- BOTETOURT-ROCKBRIDGE-AMHERST- 1122 PM EST MON FEB 8 2010 ...WINTER STORM WARNING IN EFFECT UNTIL 5 AM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL VIRGINIA AND WEST CENTRAL VIRGINIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME BUT SNOW REPORTS ARE REQUESTED. NCZ001-002-018-VAZ007-009-015-WVZ042-043-100430- ASHE-ALLEGHANY NC-WATAUGA-TAZEWELL-SMYTH-GRAYSON-MERCER-SUMMERS- 1122 PM EST MON FEB 8 2010 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 AM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST NORTH CAROLINA...SOUTHWEST VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER WEATHER ADVISORY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER WEATHER ADVISORY. NORTHWEST WINDS ARE GOING TO INCREASE WEDNESDAY AND SNOW SHOWERS WILL PERSIST THROUGH THURSDAY FROM TIME TO TIME. A WIND ADVISORY OR HIGH WIND WARNING MAY BE NEEDED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME BUT PRECIPITATION REPORTS ARE REQUESTED. VAZ010>014-016>018-WVZ044-100430- BLAND-GILES-WYTHE-PULASKI-MONTGOMERY-CARROLL-FLOYD-CRAIG-MONROE- 1122 PM EST MON FEB 8 2010 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 AM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA AND SOUTHEAST WEST VIRGINIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER WEATHER ADVISORY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER WEATHER ADVISORY. WINDS ARE GOING TO INCREASE WEDNESDAY AND A WIND ADVISORY MAY BE NEEDED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME BUT SNOW REPORTS ARE REQUESTED. NCZ003>006-019-020-VAZ022-032>034-043>047-059-100430- SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-ROANOKE-PATRICK- FRANKLIN-BEDFORD-HENRY-PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM- CHARLOTTE- 1122 PM EST MON FEB 8 2010 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 AM EST WEDNESDAY... 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...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER WEATHER ADVISORY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER WEATHER ADVISORY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME BUT PRECIPITATION REPORTS ARE REQUESTED. VAZ058-100430- HALIFAX- 1122 PM EST MON FEB 8 2010 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 AM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL VIRGINIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER WEATHER ADVISORY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER WEATHER ADVISORY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Feb 9, 1:03 AM EST, 2 hours 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 103 AM EST TUE FEB 9 2010 NCZ001-002-018-VAZ007-009-010-012-015-016-090815- ASHE-ALLEGHANY NC-WATAUGA-TAZEWELL-SMYTH-BLAND-WYTHE-GRAYSON- CARROLL- INCLUDING THE CITIES OF...WEST JEFFERSON...SPARTA...BOONE... TAZEWELL...MARION...BLAND...WYTHEVILLE...INDEPENDENCE... WHITETOP...TROUTDALE...VOLNEY...GALAX 103 AM EST TUE FEB 9 2010 ...SNOW SPREADING ACROSS THE REGION... LIGHT TO MODERATE SNOW WILL CONTINUE TO SPREAD QUICKLY EAST ACROSS THE NORTHERN NORTH CAROLINA MOUNTAINS AS WELL AS PARTS OF SOUTHWEST VIRGINIA THROUGH 3 AM. A QUICK ONE HALF TO ONE INCH OF SNOW MAY OCCUR MAINLY WEST OF INTERSTATE 77. MOTORISTS SHOULD BE ALERT AS ROADS WILL LIKELY BECOME SNOW COVERED AND SLICK OVER THE NEXT FEW HOURS.
Special weather statement, Feb 9, 2:32 AM EST, 1 hour 24 minutes before
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</html>The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 9, 1:22 PM EST | High Wind Warning | RNK | Alleghany, Amherst, Appomattox, Bath, Bedford, Bland and 31 more | 40 hr |
Nearby
High Wind Watches in Virginia, 2010High Wind Watches in North Carolina, 2010High Wind Watches in West Virginia, 2010Every high wind watch 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.