Alert archive / North Carolina / Mesoscale Discussions in 2014
Mesoscale Discussion 142
The Storm Prediction Center issued this mesoscale discussion at Feb 21, 2014, 11:05 AM EST for 33 counties in North Carolina; Dillon County, Marion County, South Carolina. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- Feb 21, 2014, 11:05 AM EST (16:05 UTC)
- Expired
- Feb 21, 2014, 12:00 PM EST
- In force
- 55 min
- Issued by
- the Storm Prediction Center
All 35 counties
Beaufort County, NC, Bertie County, NC, Bladen County, NC, Carteret County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Edgecombe County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Dillon County, SC, Marion County, SC
The radar
The Raleigh/Durham radar (KRAX), 83 km from the middle of the area, began a volume at 16:05 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Newport, NC (KMHX), launched 12:00Z, 4.1 hours before the alert went out and 95 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
- 418 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 602 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 10:29 PM EST | Mesoscale Discussion | SPC | Cherokee, Clay, Graham, Swain | 61 min |
| Feb 20, 10:47 PM EST | Tornado Watch | SPC | Cherokee, Clay, Graham, Haywood, Jackson, Macon and 2 more | 6 hr |
| Feb 21, 3:11 AM EST | Mesoscale Discussion | SPC | Alexander, Alleghany, Ashe, Avery, Buncombe, Burke and 14 more | 94 min |
| Feb 21, 8:57 AM EST | Mesoscale Discussion | SPC | Alamance, Bladen, Caswell, Chatham, Columbus, Cumberland and 22 more | 63 min |
| Feb 21, 10:02 AM EST | Tornado Watch | SPC | Alamance, Bladen, Brunswick, Chatham, Columbus, Cumberland and 24 more | 6 hr |
| Feb 21, 10:39 AM EST | Tornado Watch | SPC | Bertie, Camden, Chowan, Currituck, Gates, Hertford and 3 more | 5 hr |
| Feb 21, 12:15 PM EST | Tornado Watch | SPC | Beaufort, Carteret, Craven, Dare, Duplin, Greene and 9 more | 5 hr |
| Feb 21, 1:14 PM EST | Mesoscale Discussion | SPC | Beaufort, Bertie, Brunswick, Camden, Carteret, Chowan and 19 more | 61 min |
| Feb 21, 6:39 AM EST | Severe Thunderstorm Watch | SPC | Abbeville, Aiken, Allendale, Anderson, Bamberg, Barnwell and 30 more | 9 hr |
| Feb 21, 8:17 AM EST | Mesoscale Discussion | SPC | Aiken, Allendale, Bamberg, Barnwell, Beaufort, Calhoun and 12 more | 118 min |
| Feb 21, 12:43 PM EST | Mesoscale Discussion | SPC | Abbeville, Aiken, Allendale, Anderson, Bamberg, Barnwell and 20 more | 62 min |
Nearby
Mesoscale Discussions in North Carolina, 2014Mesoscale Discussions in South Carolina, 2014Every mesoscale discussion in 2014
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.