Alert archive / Virginia / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 131, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 28, 2020, 3:21 PM EDT for Charlotte County, Halifax County, Pittsylvania County, Virginia; Caswell County, Rockingham County, North Carolina. It was in force for 54 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 28, 2020, 3:21 PM EDT (19:21 UTC)
- Expired
- Jul 28, 2020, 4:15 PM EDT
- In force
- 54 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Caswell County, NC, Rockingham County, NC, Charlotte County, VA, Halifax County, VA, Pittsylvania County, VA
The radar
The Roanoke radar (KFCX), 101 km from the middle of the area, began a volume at 19:21 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, 7.4 hours before the alert went out and 90 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
- 702 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1352 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 23 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 28, 2:33 PM EDT, 48 minutes earlier.
Area forecast discussion, Jul 28, 2:33 PM EDT, 48 minutes before
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</html>Hazardous weather outlook, Jul 28, 9:58 AM EDT, 5 hours 23 minutes before
Hazardous Weather Outlook National Weather Service Blacksburg VA 958 AM EDT Tue Jul 28 2020 VAZ034-035-045>047-059-291400- Bedford-Amherst-Campbell-Appomattox-Buckingham-Charlotte- 958 AM EDT Tue Jul 28 2020 This Hazardous Weather Outlook is for central Virginia and south central Virginia. .DAY ONE...Today and tonight. There is a Marginal Risk for stronger to severe thunderstorms capable of producing damaging wind gusts this afternoon and evening. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NCZ001>006-018>020-VAZ007-009>020-022>024-032-033-043-044-058- WVZ042>044-507-508-291400- 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-Henry-Pittsylvania-Halifax-Mercer-Summers-Monroe- Eastern Greenbrier-Western Greenbrier- 958 AM EDT Tue Jul 28 2020 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...Today and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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, Jul 28, 2:17 PM EDT, 1 hour 4 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 28, 12:05 PM EDT | Special Weather Statement | RNK | Floyd, City of Radford | 40 min |
| Jul 28, 12:11 PM EDT | Special Weather Statement | RNK | City of Galax | 49 min |
| Jul 28, 1:35 PM EDT | Special Weather Statement | RNK | Franklin | 25 min |
| Jul 28, 2:00 PM EDT | Special Weather Statement | RNK | Henry, City of Martinsville | 30 min |
| Jul 28, 2:28 PM EDT | Areal Flood Advisory | RNK | Henry, City of Martinsville | 2 hr |
| Jul 28, 2:34 PM EDT | Special Weather Statement | RNK | Henry, Pittsylvania, City of Martinsville | 26 min |
| Jul 28, 2:48 PM EDT | Severe Thunderstorm Warning | RNK | Halifax, Henry, Pittsylvania, City of Danville | 57 min |
| Jul 28, 3:05 PM EDT | Special Weather Statement | RNK | Campbell, City of Lynchburg | 25 min |
| Jul 28, 3:28 PM EDT | Special Weather Statement | RNK | Appomattox, Campbell | 32 min |
| Jul 28, 3:34 PM EDT | Severe Thunderstorm Warning | RNK | Appomattox, Campbell, Charlotte | 56 min |
| Jul 28, 4:04 PM EDT | Special Weather Statement | RNK | Botetourt | 26 min |
| Jul 28, 4:20 PM EDT | Severe Thunderstorm Warning | RNK | Amherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lexington | 55 min |
| Jul 28, 4:22 PM EDT | Special Weather Statement | RNK | Alleghany | 23 min |
| Jul 28, 12:41 PM EDT | Special Weather Statement | RNK | Surry | 19 min |
| Jul 28, 1:01 PM EDT | Special Weather Statement | RNK | Surry | 29 min |
| Jul 28, 1:33 PM EDT | Special Weather Statement | RNK | Surry | 27 min |
| Jul 28, 1:44 PM EDT | Special Weather Statement | RNK | Alleghany | 31 min |
| Jul 28, 2:17 PM EDT | Special Weather Statement | RNK | Wilkes | 28 min |
| Jul 28, 3:00 PM EDT | Special Weather Statement | RNK | Surry, Wilkes, Yadkin | 60 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2020Severe Thunderstorm Warnings in North Carolina, 2020Every severe thunderstorm warning in 2020
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.