Alert archive / North Carolina / Mesoscale Discussions in 2003
Mesoscale Discussion 353
The Storm Prediction Center issued this mesoscale discussion at Mar 29, 2003, 12:44 PM EST for 23 counties in North Carolina; 10 counties in Virginia. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Mar 29, 2003, 12:44 PM EST (17:44 UTC)
- Expired
- Mar 29, 2003, 2:15 PM EST
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 33 counties
Bertie County, NC, Bladen County, NC, Chowan County, NC, Columbus County, NC, Cumberland County, NC, Duplin County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Greene County, NC, Halifax County, NC, Hertford County, NC, Johnston County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, Northampton County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC, City of Emporia, VA, City of Franklin, VA, City of Suffolk, VA, City of Williamsburg, VA, Greensville County, VA, Isle of Wight County, VA, James City County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA
The radar
The Raleigh/Durham radar (KRAX), 41 km from the middle of the area, began a volume at 17:48 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, 5.7 hours before the alert went out and 136 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
- 101 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 677 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Mar 29, 12:01 PM EST | Mesoscale Discussion | SPC | Albemarle, Amherst, Arlington, Buckingham, Caroline, Clarke and 31 more | 89 min |
| Mar 29, 4:33 PM EST | Mesoscale Discussion | SPC | Amelia, Brunswick, Caroline, Charles City, Charlotte, Chesterfield and 26 more | 117 min |
Nearby
Mesoscale Discussions in North Carolina, 2003Mesoscale Discussions in Virginia, 2003Every mesoscale discussion in 2003
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.