Alert archive / North Carolina / Mesoscale Discussions in 2011
Mesoscale Discussion 2396
The Storm Prediction Center issued this mesoscale discussion at Dec 27, 2011, 12:05 PM EST for 28 counties in North Carolina; 4 counties in South Carolina; City of Chesapeake, Virginia. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- Dec 27, 2011, 12:05 PM EST (17:05 UTC)
- Expired
- Dec 27, 2011, 1:00 PM EST
- In force
- 55 min
- Issued by
- the Storm Prediction Center
All 33 counties
Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Greene County, NC, Hyde County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, New Hanover County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Sampson County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Georgetown County, SC, Horry County, SC, Marion County, SC, Williamsburg County, SC, City of Chesapeake, VA
The radar
The Morehead City radar (KMHX), 47 km from the middle of the area, began a volume at 17:07 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, 5.1 hours before the alert went out and 47 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
- 844 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 353 m²/s²
- 0-3 km storm-relative helicity
- 405 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Dec 27, 1:15 PM EST | Tornado Watch | SPC | Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 19 more | 4 hr |
| Dec 27, 3:59 PM EST | Mesoscale Discussion | SPC | Beaufort, Camden, Carteret, Chowan, Currituck, Dare and 6 more | 61 min |
Nearby
Mesoscale Discussions in North Carolina, 2011Mesoscale Discussions in South Carolina, 2011Mesoscale Discussions in Virginia, 2011Every mesoscale discussion in 2011
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.