Alert archive / North Carolina / Mesoscale Discussions in 2003
Mesoscale Discussion 1743
The Storm Prediction Center issued this mesoscale discussion at Jul 9, 2003, 5:38 PM EDT for 32 counties in North Carolina. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2003, 5:38 PM EDT (21:38 UTC)
- Expired
- Jul 9, 2003, 7:15 PM EDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 32 counties
Alamance County, NC, Beaufort County, NC, Bertie County, NC, Camden County, NC, Chatham County, NC, Chowan County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Johnston County, NC, Lee County, NC, Martin County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pasquotank County, NC, Perquimans County, NC, Pitt County, NC, Randolph County, NC, Tyrrell County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC
The radar
The Raleigh/Durham radar (KRAX), 74 km from the middle of the area, began a volume at 21:42 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, 9.6 hours before the alert went out and 158 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
- 2758 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 1014 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 69 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 |
|---|---|---|---|---|
| Jul 9, 10:28 AM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Caldwell, Caswell, Davidson and 12 more | 92 min |
| Jul 9, 12:34 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Ashe, Avery, Buncombe and 34 more | 116 min |
| Jul 9, 6:00 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Beaufort, Bertie, Camden, Chatham, Chowan and 30 more | 4 hr |
Nearby
Mesoscale Discussions in North Carolina, 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.