Alert archive / Virginia / Wind Advisories in 2011
Wind Advisory 17, NWS Blacksburg, VA
NWS Blacksburg, VA issued this wind advisory at Mar 24, 2011, 3:45 AM EDT for 25 counties in Virginia; 5 counties in North Carolina. It took effect at Mar 24, 2011, 4:00 AM EDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Mar 24, 2011, 3:45 AM EDT (07:45 UTC)
- In effect from
- Mar 24, 2011, 4:00 AM EDT
- Expired
- Mar 24, 2011, 11:59 AM EDT
- In force
- 8 hr
- Issued by
- NWS Blacksburg, VA
All 30 counties
Alleghany County, NC, Ashe County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Alleghany County, VA, Amherst County, VA, Bath County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Carroll County, VA, City of Buena Vista, VA, City of Covington, VA, City of Galax, VA, City of Lexington, 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, Montgomery County, VA, Patrick County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Wythe County, VA
The radar
The Roanoke radar (KFCX), 14 km from the middle of the area, began a volume at 07:45 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, 7.8 hours before the alert went out and 77 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
- 47 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 968 m above ground
- 0-6 km bulk shear
- 84 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
312 WWUS71 KRNK 240745 NPWRNK URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 345 AM EDT THU MAR 24 2011 ...STRONG GUSTY NORTHWEST WINDS THIS MORNING... .A STRONG COLD FRONT WILL SWEEP THROUGH THE REGION EARLY THIS MORNING AS A DEEPENING LOW PRESSURE MOVES OFF THE COAST. NORTHWEST WINDS BEHIND THE FRONT ARE EXPECTED TO GUST UP TO 50 MPH ALONG AND EITHER SIDE OF THE HIGHER ELEVATIONS OF THE BLUE RIDGE MOUNTAINS THIS MORNING. NCZ001>003-018-019-VAZ010>020-022>024-032>035-241545- /O.NEW.KRNK.WI.Y.0017.110324T0800Z-110324T1600Z/ ASHE-ALLEGHANY NC-SURRY-WATAUGA-WILKES-BLAND-GILES-WYTHE-PULASKI- MONTGOMERY-GRAYSON-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE- BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST- INCLUDING THE CITIES OF...WEST JEFFERSON...SPARTA...DOBSON... BOONE...WILKESBORO...BLAND...PEARISBURG...WYTHEVILLE...RADFORD... PULASKI...BLACKSBURG...INDEPENDENCE...WHITETOP...TROUTDALE... VOLNEY...GALAX...FLOYD...NEW CASTLE...CLIFTON FORGE...COVINGTON... HOT SPRINGS...ROANOKE...SALEM...FINCASTLE...LEXINGTON... BUENA VISTA...STUART...ROCKY MOUNT...BEDFORD...AMHERST 345 AM EDT THU MAR 24 2011 ...WIND ADVISORY IN EFFECT UNTIL NOON EDT TODAY... THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL NOON EDT TODAY. * LOCATIONS...HIGHER ELEVATIONS OF THE BLUE RIDGE MOUNTAINS...AND INTO THE SOUTHEAST DOWNSLOPE SIDES. * HAZARDS...STRONG WIND GUSTS THIS MORNING BEHIND A COLD FRONT. * WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 50 MPH. * TIMING...BEGINNING AS EARLY AS 400 AM IN THE NORTH CAROLINA MOUNTAINS...THEN SPREADING NORTHEAST ALONG THE BLUE RIDGE INTO SOUTHWEST VIRGINIA BY 800 AM. * IMPACTS...MAY DOWN SOME TREE LIMBS OR POWER LINES...POSSIBLY EVEN DOWN A FEW TREES DUE TO WET SOILS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
1 follow-up statement
936 WWUS71 KRNK 241559 NPWRNK URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 1159 AM EDT THU MAR 24 2011 THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS CANCELLED THE WIND ADVISORY. NCZ001>003-018-019-VAZ010>020-022>024-032>035-241700- /O.CAN.KRNK.WI.Y.0017.000000T0000Z-110324T1600Z/ ASHE-ALLEGHANY NC-SURRY-WATAUGA-WILKES-BLAND-GILES-WYTHE-PULASKI- MONTGOMERY-GRAYSON-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE- BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST- INCLUDING THE CITIES OF...WEST JEFFERSON...SPARTA...DOBSON... BOONE...WILKESBORO...BLAND...PEARISBURG...WYTHEVILLE...RADFORD... PULASKI...BLACKSBURG...INDEPENDENCE...WHITETOP...TROUTDALE... VOLNEY...GALAX...FLOYD...NEW CASTLE...CLIFTON FORGE...COVINGTON... HOT SPRINGS...ROANOKE...SALEM...FINCASTLE...LEXINGTON... BUENA VISTA...STUART...ROCKY MOUNT...BEDFORD...AMHERST 1159 AM EDT THU MAR 24 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS CANCELLED THE WIND ADVISORY. WHILE WINDS WILL REMAIN GUSTY THROUGH THE AFTERNOON ALONG THE HIGHER RIDGELINES OF THE BLUE RIDGE MOUNTAINS...THE PRESSURE GRADIENT HAS RELAXED ENOUGH AT NOONTIME ACROSS THE REGION THAT WIND SPEEDS ARE NO LONGER REACHING ADVISORY CRITERIA. $$ 16
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 9:02 PM EDT | Tornado Warning | RNK | Halifax | 21 min |
| Mar 23, 9:21 PM EDT | Severe Thunderstorm Warning | RNK | Halifax, Henry, Pittsylvania, City of Danville | 32 min |
| Mar 24, 1:30 AM EDT | Special Weather Statement | RNK | Alleghany, Botetourt, City of Covington | 60 min |
| Mar 24, 1:34 AM EDT | Special Weather Statement | RNK | Grayson, City of Galax | 56 min |
| Mar 24, 1:36 AM EDT | Special Weather Statement | RNK | Rockbridge, City of Buena Vista, City of Lexington | 54 min |
| Mar 24, 2:19 AM EDT | Special Weather Statement | RNK | Bedford | 56 min |
| Mar 24, 5:41 AM EDT | Special Weather Statement | RNK | Floyd, Franklin, Henry, Patrick, City of Martinsville | 64 min |
| Mar 23, 8:34 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham, Stokes | 56 min |
| Mar 23, 9:27 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham, Stokes | 63 min |
Nearby
Wind Advisories in Virginia, 2011Wind Advisories in North Carolina, 2011Every wind advisory in 2011
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.