Alert archive / North Carolina / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 107, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 21, 2018, 7:11 PM EDT for Wilkes County, North Carolina. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 21, 2018, 7:11 PM EDT (23:11 UTC)
- Expired
- Jul 21, 2018, 7:57 PM EDT
- In force
- 46 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Wilkes County, NC
The radar
The Roanoke radar (KFCX), 121 km from the middle of the area, began a volume at 23:12 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, 11.2 hours before the alert went out and 114 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
- 975 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 21, 3:02 PM EDT, 4 hours 9 minutes earlier.
Area forecast discussion, Jul 21, 3:02 PM EDT, 4 hours 9 minutes before
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Hazardous Weather Outlook National Weather Service Blacksburg VA 312 PM EDT Sat Jul 21 2018 NCZ001>006-018>020-VAZ007-009>020-022>024-032>034-043-044-WVZ042>044- 507-508-220900- Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes- Yadkin-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Grayson- Carroll-Floyd-Craig-Alleghany VA-Bath-Roanoke-Botetourt-Rockbridge- Patrick-Franklin-Bedford-Henry-Pittsylvania-Mercer-Summers-Monroe- Eastern Greenbrier-Western Greenbrier- 312 PM EDT Sat Jul 21 2018 This Hazardous Weather Outlook is for north central North Carolina, northwest North Carolina, south central Virginia, southwest Virginia, west central Virginia and southeast West Virginia. .DAY ONE...This afternoon and tonight. Isolated to widely scattered severe thunderstorms containing damaging winds are possible Saturday afternoon and evening. Heavy rainfall that could result in localized flooding may also occur. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Several periods of heavy rainfall may bring a threat for flooding by the early to mid portion of next week. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. VAZ035-045>047-058-059-220900- Amherst-Campbell-Appomattox-Buckingham-Halifax-Charlotte- 312 PM EDT Sat Jul 21 2018 This Hazardous Weather Outlook is for central Virginia and south central Virginia. .DAY ONE...This afternoon and tonight. There is a low probability for widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Several periods of heavy rainfall may bring a threat for flooding by the early to mid portion of next week. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Jul 21, 4:56 PM EDT, 2 hours 15 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 |
|---|---|---|---|---|
| Jul 20, 8:36 PM EDT | Special Weather Statement | RNK | Tazewell | 54 min |
| Jul 20, 10:23 PM EDT | Special Weather Statement | RNK | Grayson, Smyth | 67 min |
| Jul 21, 4:56 PM EDT | Special Weather Statement | RNK | Tazewell | 64 min |
| Jul 21, 6:41 PM EDT | Special Weather Statement | RNK | Smyth | 34 min |
| Jul 21, 7:14 PM EDT | Special Weather Statement | RNK | City of Galax | 61 min |
| Jul 21, 7:20 PM EDT | Special Weather Statement | RNK | Giles | 25 min |
| Jul 21, 7:30 PM EDT | Special Weather Statement | RNK | Henry | 30 min |
| Jul 20, 10:58 PM EDT | Special Weather Statement | RNK | Ashe, Watauga | 77 min |
| Jul 21, 12:10 AM EDT | Special Weather Statement | RNK | Alleghany, Ashe, Watauga, Wilkes | 65 min |
| Jul 21, 6:47 PM EDT | Special Weather Statement | RNK | Wilkes | 28 min |
| Jul 21, 7:05 PM EDT | Special Weather Statement | RNK | Wilkes | 40 min |
| Jul 21, 7:33 PM EDT | Special Weather Statement | RNK | Surry | 27 min |
| Jul 21, 7:49 PM EDT | Special Weather Statement | RNK | Wilkes | 26 min |
| Jul 21, 7:40 PM EDT | Special Weather Statement | RNK | Monroe | 35 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2018Every severe thunderstorm warning in 2018
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.