Alert archive / Virginia / Special Weather Statements in 2017
Special Weather Statement, NWS Blacksburg, VA
NWS Blacksburg, VA issued this special weather statement at Jun 18, 2017, 1:48 PM EDT for Grayson County, Virginia. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2017, 1:48 PM EDT (17:48 UTC)
- Expired
- Jun 18, 2017, 2:15 PM EDT
- In force
- 27 min
- Issued by
- NWS Blacksburg, VA
County Grayson County, VA
The radar
The Roanoke radar (KFCX), 100 km from the middle of the area, began a volume at 17:52 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, 5.8 hours before the alert went out and 148 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
- 711 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 664 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jun 18, 10:19 AM EDT, 3 hours 29 minutes earlier.
Area forecast discussion, Jun 18, 10:19 AM EDT, 3 hours 29 minutes before
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<div class="status" id="status">Temporary Notice</div>
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</html>Hazardous weather outlook, Jun 18, 4:24 AM EDT, 9 hours 24 minutes before
Hazardous Weather Outlook National Weather Service Blacksburg VA 424 AM EDT Sun Jun 18 2017 VAZ007-WVZ042>044-507-508-190830- Tazewell-Mercer-Summers-Monroe-Eastern Greenbrier-Western Greenbrier- 424 AM EDT Sun Jun 18 2017 This Hazardous Weather Outlook is for southwest Virginia and southeast West Virginia. .DAY ONE...Today and tonight. Scattered slow moving strong to isolated severe thunderstorms could produce localized flooding this afternoon through tonight. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional strong to isolated severe thunderstorms will be possible Monday along a passing cold front. Heavy rainfall may also result in localized flooding. For Tuesday through Saturday, the probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NCZ001>006-018>020-VAZ009>020-022>024-032>035-043>047-058-059-190830- Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes- Yadkin-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Grayson-Carroll- Floyd-Craig-Alleghany VA-Bath-Roanoke-Botetourt-Rockbridge-Patrick- Franklin-Bedford-Amherst-Henry-Pittsylvania-Campbell-Appomattox- Buckingham-Halifax-Charlotte- 424 AM EDT Sun Jun 18 2017 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...Today and tonight. Scattered slow moving strong thunderstorms could produce localized flooding this afternoon and evening. .DAYS TWO THROUGH SEVEN...Monday through Saturday. There is a slight risk for severe thunderstorms containing damaging winds as well as large hail ahead of a cold front on Monday. Locally heavy rainfall could also result in localized flooding. For Tuesday through Saturday, the probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Jun 18, 1:48 PM EDT, 0 minutes before
Special Weather Statement National Weather Service BLACKSBURG VA 148 PM EDT SUN JUN 18 2017 VAZ009-012-015-181815- Grayson-Wythe-Smyth- 148 PM EDT SUN JUN 18 2017 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN SMYTH...SOUTHWESTERN WYTHE AND NORTH CENTRAL GRAYSON COUNTIES... At 147 PM EDT, a strong thunderstorm was located over Troutdale, moving northeast at 15 mph. Winds in excess of 30 mph and half inch hail are possible with this storm. Locations impacted include... Sugar Grove... Troutdale... Flatridge... and Comers Rock. LAT...LON 3666 8137 3671 8144 3687 8134 3680 8116 TIME...MOT...LOC 1747Z 219DEG 15KT 3672 8139 DS
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 1:52 PM EDT | Special Weather Statement | RNK | City of Roanoke | 38 min |
| Jun 18, 3:08 PM EDT | Special Weather Statement | RNK | Smyth | 22 min |
| Jun 18, 4:59 PM EDT | Special Weather Statement | RNK | Smyth | 61 min |
Nearby
Special Weather Statements in Virginia, 2017Every special weather statement in 2017
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.