Alert archive / North Carolina / Mesoscale Discussions in 2007
Mesoscale Discussion 469
The Storm Prediction Center issued this mesoscale discussion at Apr 12, 2007, 6:18 AM EDT for 26 counties in North Carolina; 9 counties in Virginia. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- Apr 12, 2007, 6:18 AM EDT (10:18 UTC)
- Expired
- Apr 12, 2007, 7:15 AM EDT
- In force
- 57 min
- Issued by
- the Storm Prediction Center
All 35 counties
Beaufort County, NC, Bertie County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Craven County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Gates County, NC, Greene County, NC, Hertford 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, Tyrrell County, NC, Washington County, NC, City of Chesapeake, VA, City of Franklin, VA, City of Hampton, VA, City of Newport News, VA, City of Norfolk, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Virginia Beach, VA, Isle of Wight County, VA
The radar
The Morehead City radar (KMHX), 53 km from the middle of the area, began a volume at 10:21 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
Newport, NC (KMHX), launched 00:00Z, 10.3 hours before the alert went out and 52 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
- 609 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 446 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 |
|---|---|---|---|---|
| Apr 12, 12:16 AM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Bladen, Cabarrus, Chatham, Cumberland and 31 more | 89 min |
| Apr 12, 12:55 AM EDT | Severe Thunderstorm Watch | SPC | Alamance, Anson, Bertie, Bladen, Cabarrus, Caswell and 40 more | 3 hr |
| Apr 12, 2:39 AM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 35 more | 66 min |
| Apr 12, 3:25 AM EDT | Tornado Watch | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 36 more | 8 hr |
| Apr 12, 8:25 AM EDT | Mesoscale Discussion | SPC | Beaufort, Camden, Carteret, Craven, Currituck, Dare and 6 more | 95 min |
Nearby
Mesoscale Discussions in North Carolina, 2007Mesoscale Discussions in Virginia, 2007Every mesoscale discussion in 2007
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.