Alert archive / North Carolina / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 346, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Nov 6, 2018, 5:26 AM EST for Graham County, Swain County, North Carolina. It was in force for 49 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
- Nov 6, 2018, 5:26 AM EST (10:26 UTC)
- Expired
- Nov 6, 2018, 6:15 AM EST
- In force
- 49 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Graham County, NC, Swain County, NC
The radar
The Knoxville radar (KMRX), 87 km from the middle of the area, began a volume at 10:28 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Nov 6, 3:15 AM EST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 10.4 hours before the alert went out and 240 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
- 25 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 473 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 237 m²/s²
- 0-3 km storm-relative helicity
- 258 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 5, 8:48 PM EST | Dense Fog Advisory | GSP | Alexander, Burke, Cabarrus, Caldwell, Catawba, Cleveland and 10 more | 10 hr |
| Nov 6, 5:13 AM EST | Special Weather Statement | GSP | Graham | 32 min |
| Nov 6, 5:52 AM EST | Special Weather Statement | GSP | Madison | 23 min |
| Nov 6, 6:25 AM EST | Special Weather Statement | GSP | Jackson, Macon | 50 min |
| Nov 6, 7:05 AM EST | Special Weather Statement | GSP | Jackson, Transylvania | 25 min |
| Nov 6, 7:31 AM EST | Special Weather Statement | GSP | Transylvania | 44 min |
| Nov 6, 9:49 AM EST | Special Weather Statement | GSP | Catawba, Cleveland, Gaston, Lincoln | 56 min |
| Nov 6, 10:42 AM EST | Special Weather Statement | GSP | Cabarrus, Mecklenburg, Rowan | 63 min |
| Nov 6, 11:22 AM EST | Special Weather Statement | GSP | Cabarrus, Union | 53 min |
| Nov 6, 12:14 PM EST | Special Weather Statement | GSP | Union | 46 min |
| Nov 6, 1:00 PM EST | Special Weather Statement | GSP | Union | 15 min |
| Nov 6, 8:10 AM EST | Special Weather Statement | GSP | Anderson, Greenville, Spartanburg | 50 min |
| Nov 6, 9:01 AM EST | Special Weather Statement | GSP | Anderson, Cherokee, Laurens, Spartanburg | 44 min |
| Nov 6, 9:47 AM EST | Special Weather Statement | GSP | Cherokee, Laurens, Union | 58 min |
| Nov 6, 10:31 AM EST | Special Weather Statement | GSP | Chester, Union, York | 59 min |
| Nov 6, 10:39 AM EST | Special Weather Statement | GSP | Laurens | 36 min |
| Nov 6, 11:29 AM EST | Special Weather Statement | GSP | Chester | 61 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.