Alert archive / North Carolina / Mesoscale Discussions in 2012
Mesoscale Discussion 1348
The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2012, 7:04 PM EDT for 46 counties in North Carolina; 6 counties in Virginia. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2012, 7:04 PM EDT (23:04 UTC)
- Expired
- Jul 1, 2012, 8:00 PM EDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
All 52 counties
Alamance County, NC, Beaufort County, NC, Bertie County, NC, Camden County, NC, Carteret County, NC, Caswell County, NC, Chatham County, NC, Chowan County, NC, Craven County, NC, Currituck County, NC, Dare County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Greene County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pamlico County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Pitt County, NC, Randolph County, NC, Rockingham County, NC, Tyrrell County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, City of Danville, VA, City of Martinsville, VA, Halifax County, VA, Henry County, VA, Mecklenburg County, VA, Pittsylvania County, VA
The radar
The Morehead City radar (KMHX), 100 km from the middle of the area, began a volume at 23:07 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 nearest sounding before it
Newport, NC (KMHX), launched 12:00Z, 11.1 hours before the alert went out and 99 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
- 2962 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 1419 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
758 ACUS11 KWNS 012305 SWOMCD SPC MCD 012304 NCZ000-VAZ000-020000- MESOSCALE DISCUSSION 1348 NWS STORM PREDICTION CENTER NORMAN OK 0604 PM CDT SUN JUL 01 2012 AREAS AFFECTED...PARTS OF NC/VA CONCERNING...SEVERE THUNDERSTORM WATCH 442... VALID 012304Z - 020000Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 442 CONTINUES. SUMMARY...THE SVR THREAT ACROSS REMAINING VALID PORTIONS OF WW 442 WILL CONTINUE TO DIMINISH DURING THE NEXT HOUR...AND ANY REMAINING VALID PARTS OF THE WW WILL BE ALLOWED TO EXPIRE BY 0000Z. DISCUSSION...WIDESPREAD CONVECTIVE OVERTURNING AND NOCTURNAL STABILIZATION SHOULD ALLOW THE SVR THREAT TO DIMINISH DURING THE NEXT HOUR. THUS...THE SHORT-TERM SVR THREAT WILL SUBSIDE...AND ANY REMAINING VALID PARTS OF THE WW WILL BE ALLOWED TO EXPIRE BY 0000Z. ..COHEN.. 07/01/2012 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...AKQ...MHX...RAH...RNK... LAT...LON 34617548 35368016 37028016 36377539 34617548
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 9:27 AM EDT | Mesoscale Discussion | SPC | Alleghany, Ashe, Forsyth, Rockingham, Stokes, Surry and 3 more | 63 min |
| Jul 1, 9:44 AM EDT | Severe Thunderstorm Watch | SPC | Alleghany, Ashe, Caswell, Rockingham, Stokes, Surry and 3 more | 5 hr |
| Jul 1, 11:38 AM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Ashe, Avery, Caldwell and 12 more | 97 min |
| Jul 1, 12:56 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Beaufort, Bertie, Camden, Carteret and 51 more | 7 hr |
| Jul 1, 1:39 PM EDT | Mesoscale Discussion | SPC | Alexander, Anson, Buncombe, Burke, Cabarrus, Catawba and 24 more | 96 min |
| Jul 1, 2:01 PM EDT | Severe Thunderstorm Watch | SPC | Bladen, Brunswick, Cabarrus, Catawba, Cleveland, Columbus and 12 more | 9 hr |
| Jul 1, 2:53 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Camden, Carteret, Chowan and 37 more | 97 min |
| Jul 1, 4:15 PM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, Duplin, New Hanover, Pender and 3 more | 90 min |
| Jul 1, 7:39 PM EDT | Mesoscale Discussion | SPC | Anson, Bladen, Brunswick, Cabarrus, Cleveland, Columbus and 14 more | 96 min |
Nearby
Mesoscale Discussions in North Carolina, 2012Mesoscale Discussions in Virginia, 2012Every mesoscale discussion in 2012
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.