Alert archive / Virginia / Wind Advisories in 2021
Wind Advisory 11, NWS Blacksburg, VA
NWS Blacksburg, VA issued this wind advisory at Aug 31, 2021, 2:59 PM EDT for Grayson County, Smyth County, Tazewell County, Virginia; Mercer County, West Virginia; Ashe County, Watauga County, North Carolina. It took effect at Aug 31, 2021, 5:00 PM EDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Aug 31, 2021, 2:59 PM EDT (18:59 UTC)
- In effect from
- Aug 31, 2021, 5:00 PM EDT
- Expired
- Sep 1, 2021, 6:00 AM EDT
- In force
- 13 hr
- Issued by
- NWS Blacksburg, VA
Counties Ashe County, NC, Watauga County, NC, Grayson County, VA, Smyth County, VA, Tazewell County, VA, Mercer County, WV
The radar
The Roanoke radar (KFCX), 107 km from the middle of the area, began a volume at 18:59 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, 7.0 hours before the alert went out and 158 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
- 379 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1017 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
361 WWUS71 KRNK 311859 NPWRNK URGENT - WEATHER MESSAGE National Weather Service Blacksburg VA 259 PM EDT Tue Aug 31 2021 NCZ001-018-VAZ007-009-015-WVZ042-010300- /O.NEW.KRNK.WI.Y.0011.210831T2100Z-210901T1200Z/ Ashe-Watauga-Tazewell-Smyth-Grayson-Mercer- Including the cities of West Jefferson, Boone, Tazewell, Marion, Independence, Whitetop, Troutdale, Volney, Bluefield, and Flat Top 259 PM EDT Tue Aug 31 2021 ...WIND ADVISORY IN EFFECT UNTIL 8 AM EDT WEDNESDAY... * WHAT...Southeast winds 10 to 15 mph expected. Gusts 25 to 35 mph in the higher elevations. * WHERE...In Virginia, Tazewell, Smyth, and Grayson Counties. In North Carolina, Ashe and Watauga Counties. In West Virginia, Mercer County. * WHEN...Until 8 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. A few downed trees are possible with saturated ground. Isolated power outages possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
2 follow-up statements
858 WWUS71 KRNK 010218 NPWRNK URGENT - WEATHER MESSAGE National Weather Service Blacksburg VA 1018 PM EDT Tue Aug 31 2021 NCZ001-018-VAZ007-009-015-WVZ042-011030- /O.CON.KRNK.WI.Y.0011.000000T0000Z-210901T1200Z/ Ashe-Watauga-Tazewell-Smyth-Grayson-Mercer- Including the cities of West Jefferson, Boone, Tazewell, Marion, Independence, Whitetop, Troutdale, Volney, Bluefield, and Flat Top 1018 PM EDT Tue Aug 31 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT WEDNESDAY... * WHAT...Southeast winds 10 to 15 mph expected. Gusts 25 to 35 mph in the higher elevations. * WHERE...In Virginia, Tazewell, Smyth, and Grayson Counties. In North Carolina, Ashe and Watauga Counties. In West Virginia, Mercer County. * WHEN...Until 8 AM EDT Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. A few downed trees are possible with saturated ground. Isolated power outages possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
899 WWUS71 KRNK 011000 NPWRNK URGENT - WEATHER MESSAGE National Weather Service Blacksburg VA 600 AM EDT Wed Sep 1 2021 NCZ001-018-VAZ007-009-015-WVZ042-011100- /O.CAN.KRNK.WI.Y.0011.000000T0000Z-210901T1200Z/ Ashe-Watauga-Tazewell-Smyth-Grayson-Mercer- Including the cities of West Jefferson, Boone, Tazewell, Marion, Independence, Whitetop, Troutdale, Volney, Bluefield, and Flat Top 600 AM EDT Wed Sep 1 2021 ...WIND ADVISORY IS CANCELLED... Winds will turn to the west then northwest today as the remanants of Ida move from southern West Virginia into southeast Pennsylvania. Strong wind gusts will no longer pose a threat. Showers and isolated thunderstorms in bands around the low may still produce a brief period of gusty wind. $$
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 8:28 PM EDT | Special Weather Statement | RNK | City of Martinsville | 32 min |
| Aug 30, 8:59 PM EDT | Special Weather Statement | RNK | City of Martinsville | 31 min |
| Aug 31, 1:42 AM EDT | Special Weather Statement | RNK | Smyth | 33 min |
| Aug 31, 4:29 PM EDT | Special Weather Statement | RNK | Carroll | 31 min |
| Aug 31, 4:54 PM EDT | Tornado Warning | RNK | Carroll | 36 min |
| Aug 31, 4:57 PM EDT | Special Weather Statement | RNK | City of Galax | 33 min |
| Aug 31, 5:36 PM EDT | Special Weather Statement | RNK | Floyd | 24 min |
| Aug 31, 6:29 PM EDT | Special Weather Statement | RNK | Montgomery, City of Radford | 31 min |
| Aug 31, 6:39 PM EDT | Tornado Warning | RNK | Montgomery, City of Radford | 36 min |
| Aug 31, 7:11 PM EDT | Tornado Warning | RNK | Craig, Montgomery | 34 min |
| Aug 31, 7:29 PM EDT | Special Weather Statement | RNK | Montgomery, City of Radford | 31 min |
| Aug 31, 7:33 PM EDT | Special Weather Statement | RNK | Floyd | 27 min |
| Aug 31, 7:50 PM EDT | Tornado Warning | RNK | Giles, Montgomery | 25 min |
| Aug 31, 6:07 PM EDT | Severe Thunderstorm Warning | RNK | Ashe, Watauga, Wilkes | 38 min |
Nearby
Wind Advisories in Virginia, 2021Wind Advisories in North Carolina, 2021Wind Advisories in West Virginia, 2021Every wind advisory in 2021
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.