Alert archive / Virginia / Wind Advisories in 2011
Wind Advisory 21, NWS Blacksburg, VA
NWS Blacksburg, VA issued this wind advisory at Apr 27, 2011, 3:37 AM EDT for Bland County, Smyth County, Tazewell County, Virginia; Mercer County, West Virginia. It took effect at Apr 27, 2011, 9:00 AM EDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Apr 27, 2011, 3:37 AM EDT (07:37 UTC)
- In effect from
- Apr 27, 2011, 9:00 AM EDT
- Expired
- Apr 28, 2011, 12:00 AM EDT
- In force
- 15 hr
- Issued by
- NWS Blacksburg, VA
Counties Bland County, VA, Smyth County, VA, Tazewell County, VA, Mercer County, WV
The radar
The Roanoke radar (KFCX), 95 km from the middle of the area, began a volume at 07:40 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, 7.6 hours before the alert went out and 163 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
- 595 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1114 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 235 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
537 WWUS71 KRNK 270737 NPWRNK URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 337 AM EDT WED APR 27 2011 ...STRONG SOUTHERLY WINDS EXPECTED THROUGH THIS EVENING... .A STRONG COLD FRONT WILL APPROACH FROM THE WEST LATER TODAY BEFORE PASSING ACROSS THE REGION LATE TONIGHT. SOUTHERLY WINDS AHEAD OF THE FRONT MAY RESULT IN GUSTS TO AROUND 50 MPH ESPECIALLY ACROSS THE HIGHER ELEVATIONS TODAY INTO EARLY TONIGHT. VAZ007-009-010-WVZ042-271545- /O.NEW.KRNK.WI.Y.0021.110427T1300Z-110428T0400Z/ TAZEWELL-SMYTH-BLAND-MERCER- INCLUDING THE CITIES OF...TAZEWELL...MARION...BLAND...BLUEFIELD... FLAT TOP 337 AM EDT WED APR 27 2011 ...WIND ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO MIDNIGHT EDT TONIGHT... THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 9 AM THIS MORNING TO MIDNIGHT EDT TONIGHT. * LOCATIONS...HIGHER RIDGES AND IN LOCATIONS WHERE WINDS MAY CHANNEL OR DOWNSLOPE THROUGH THE VALLEYS. * WINDS...SOUTH 15 TO 30 MPH WITH GUSTS UP TO 50 MPH. * TIMING...THIS MORNING THROUGH LATE THIS EVENING. * IMPACTS...DOWNED TREE LIMBS AND POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 35 MPH WITH GUSTS TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
4 follow-up statements
871 WWUS71 KRNK 271302 NPWRNK URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 902 AM EDT WED APR 27 2011 ...STRONG SOUTHERLY WINDS EXPECTED THROUGH THIS EVENING... .A STRONG COLD FRONT WILL APPROACH FROM THE WEST LATER TODAY BEFORE PASSING ACROSS THE REGION LATE TONIGHT. SOUTHERLY WINDS AHEAD OF THE FRONT MAY RESULT IN GUSTS TO AROUND 50 MPH ESPECIALLY ACROSS THE HIGHER ELEVATIONS TODAY INTO EARLY TONIGHT. VAZ007-009-010-WVZ042-272115- /O.CON.KRNK.WI.Y.0021.000000T0000Z-110428T0400Z/ TAZEWELL-SMYTH-BLAND-MERCER- INCLUDING THE CITIES OF...TAZEWELL...MARION...BLAND...BLUEFIELD... FLAT TOP 902 AM EDT WED APR 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... A WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT. * LOCATIONS...HIGHER RIDGES AND IN LOCATIONS WHERE WINDS MAY CHANNEL OR DOWNSLOPE THROUGH THE VALLEYS. * WINDS...SOUTH 15 TO 30 MPH WITH GUSTS UP TO 50 MPH. * TIMING...THIS MORNING THROUGH LATE THIS EVENING. * IMPACTS...DOWNED TREE LIMBS AND POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 35 MPH WITH GUSTS TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ RCS
686 WWUS71 KRNK 271926 NPWRNK URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 326 PM EDT WED APR 27 2011 ...STRONG SOUTHERLY WINDS EXPECTED THROUGH THIS EVENING... .A STRONG COLD FRONT WILL APPROACH FROM THE WEST LATER TODAY BEFORE PASSING ACROSS THE REGION LATE TONIGHT. SOUTHERLY WINDS AHEAD OF THE FRONT MAY RESULT IN GUSTS TO AROUND 50 MPH ESPECIALLY ACROSS THE HIGHER ELEVATIONS TODAY INTO EARLY TONIGHT. VAZ007-009-010-WVZ042-280330- /O.CON.KRNK.WI.Y.0021.000000T0000Z-110428T0400Z/ TAZEWELL-SMYTH-BLAND-MERCER- INCLUDING THE CITIES OF...TAZEWELL...MARION...BLAND...BLUEFIELD... FLAT TOP 326 PM EDT WED APR 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... A WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT. * LOCATIONS...HIGHER RIDGES AND IN LOCATIONS WHERE WINDS MAY CHANNEL OR DOWNSLOPE THROUGH THE VALLEYS. * WINDS...SOUTH 15 TO 30 MPH WITH GUSTS UP TO 50 MPH. * TIMING...THIS MORNING THROUGH LATE THIS EVENING. * IMPACTS...DOWNED TREE LIMBS AND POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 35 MPH WITH GUSTS TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ RCS
111 WWUS71 KRNK 272355 NPWRNK URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 755 PM EDT WED APR 27 2011 ...STRONG SOUTHERLY WINDS EXPECTED THROUGH THIS EVENING... .A STRONG COLD FRONT WILL APPROACH FROM THE WEST THIS EVENING BEFORE PASSING ACROSS THE REGION LATE TONIGHT. SOUTHERLY WINDS AHEAD OF THE FRONT MAY RESULT IN GUSTS TO AROUND 50 MPH ESPECIALLY ACROSS THE HIGHER ELEVATIONS THROUGH EARLY TONIGHT. VAZ007-009-010-WVZ042-280400- /O.CON.KRNK.WI.Y.0021.000000T0000Z-110428T0400Z/ TAZEWELL-SMYTH-BLAND-MERCER- INCLUDING THE CITIES OF...TAZEWELL...MARION...BLAND...BLUEFIELD... FLAT TOP 755 PM EDT WED APR 27 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... A WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT. * LOCATIONS...HIGHER RIDGES AND IN LOCATIONS WHERE WINDS MAY CHANNEL OR DOWNSLOPE THROUGH THE VALLEYS. * WINDS...SOUTH 15 TO 30 MPH WITH GUSTS UP TO 50 MPH. * TIMING...THROUGH LATE THIS EVENING. * IMPACTS...DOWNED TREE LIMBS AND POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 35 MPH WITH GUSTS TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
682 WWUS71 KRNK 280353 NPWRNK URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 1153 PM EDT WED APR 27 2011 ...CONCERN OF NON CONVECTIVE STRONG WIND GUSTS ENDING... .AS A COLD FRONT AND ITS ASSOCIATED SHOWERS AND STORMS MOVES INTO THE AREA...THE STRONG LOW LEVEL SOUTHERLY WINDS THAT PROMPTED THE ADVISORY WILL SHIFT TO WESTERLY WINDS. THIS WILL BRING AN END TO THE DOWNSLOPE COMPONENT THAT PROMPTED THE ADVISORY OVER A PORTION OF THE MOUNTAIN EMPIRE REGION OF SOUTHWEST VIRGINIA. GUSTY WINDS WILL STILL BE POSSIBLE...BUT THEY WILL BE ASSOCIATED WITH THE SHOWERS AND STORMS...AND EVENTUALLY NORTHWEST WINDS BEHIND THE FRONT. VAZ007-009-010-WVZ042-280500- /O.EXP.KRNK.WI.Y.0021.000000T0000Z-110428T0400Z/ TAZEWELL-SMYTH-BLAND-MERCER- INCLUDING THE CITIES OF...TAZEWELL...MARION...BLAND...BLUEFIELD... FLAT TOP 1153 PM EDT WED APR 27 2011 ...WIND ADVISORY WILL EXPIRE AT MIDNIGHT EDT TONIGHT... THE WIND ADVISORY WILL EXPIRE AT MIDNIGHT EDT TONIGHT. THE CONCERN FOR NON CONVECTIVE STRONG WINDS IS ENDING...THEREFORE THE ADVISORY WILL BE ALLOWED TO EXPIRE. GUSTY WINDS WILL STILL BE POSSIBLE THROUGH THE NIGHT...BUT BE ASSOCIATED MAINLY WITH SHOWERS AND STORMS MOVING THROUGH THE AREA. $$ DS
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 1:27 PM EDT | Severe Thunderstorm Warning | RNK | Henry, Patrick | 63 min |
| Apr 27, 2:07 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Franklin, Henry, Pittsylvania, City of Martinsville | 38 min |
| Apr 27, 2:30 PM EDT | Special Weather Statement | RNK | Amherst, City of Lynchburg | 45 min |
| Apr 27, 3:06 PM EDT | Special Weather Statement | RNK | Nelson | 24 min |
| Apr 27, 3:36 PM EDT | Special Weather Statement | RNK | Buckingham | 24 min |
| Apr 27, 4:49 PM EDT | Special Weather Statement | RNK | Pittsylvania | 41 min |
| Apr 27, 4:56 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Franklin, Henry, Pittsylvania | 49 min |
| Apr 27, 5:22 PM EDT | Severe Thunderstorm Warning | RNK | Henry, Patrick, City of Martinsville | 53 min |
| Apr 27, 5:24 PM EDT | Severe Thunderstorm Warning | RNK | Buckingham, Charlotte | 35 min |
| Apr 27, 5:30 PM EDT | Special Weather Statement | RNK | Charlotte, Halifax | 30 min |
| Apr 27, 5:39 PM EDT | Special Weather Statement | RNK | Appomattox, Campbell | 51 min |
| Apr 27, 5:41 PM EDT | Special Weather Statement | RNK | Pittsylvania | 34 min |
| Apr 27, 5:46 PM EDT | Severe Thunderstorm Warning | RNK | Charlotte, Halifax | 34 min |
| Apr 27, 5:53 PM EDT | Severe Thunderstorm Warning | RNK | Amherst, Appomattox, Campbell, City of Lynchburg | 37 min |
| Apr 27, 6:05 PM EDT | Severe Thunderstorm Warning | RNK | Henry | 40 min |
| Apr 27, 6:09 PM EDT | Tornado Warning | RNK | Henry, Pittsylvania, City of Martinsville | 36 min |
| Apr 27, 6:30 PM EDT | Severe Thunderstorm Warning | RNK | Appomattox, Buckingham | 60 min |
| Apr 27, 6:30 PM EDT | Tornado Warning | RNK | Henry, Pittsylvania | 30 min |
| Apr 27, 6:39 PM EDT | Tornado Warning | RNK | Pittsylvania | 51 min |
| Apr 27, 6:57 PM EDT | Severe Thunderstorm Warning | RNK | Buckingham | 29 min |
| Apr 27, 6:59 PM EDT | Tornado Warning | RNK | Henry, Pittsylvania | 46 min |
| Apr 27, 7:24 PM EDT | Tornado Warning | RNK | Campbell, Charlotte, Halifax, Pittsylvania | 51 min |
| Apr 27, 7:29 PM EDT | Severe Thunderstorm Warning | RNK | Halifax, Pittsylvania, City of Danville | 46 min |
| Apr 27, 7:35 PM EDT | Tornado Warning | RNK | Henry, Pittsylvania | 40 min |
| Apr 27, 7:44 PM EDT | Severe Thunderstorm Warning | RNK | Campbell, Charlotte, Halifax, Pittsylvania | 46 min |
Nearby
Wind Advisories in Virginia, 2011Wind Advisories in West Virginia, 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.