Alert archive / North Carolina / Mesoscale Discussions in 2004
Mesoscale Discussion 2142
The Storm Prediction Center issued this mesoscale discussion at Aug 29, 2004, 1:30 PM EDT for 21 counties in North Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 29, 2004, 1:30 PM EDT (17:30 UTC)
- Expired
- Aug 29, 2004, 3:30 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 21 counties
Bladen County, NC, Brunswick County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Greene County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Wayne County, NC
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, 5.5 hours before the alert went out and 116 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
- 1320 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 704 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
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 |
|---|---|---|---|---|
| Aug 29, 2:30 PM EDT | Tornado Watch | SPC | Bladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 20 more | 8 hr |
| Aug 29, 6:33 PM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 18 more | 117 min |
Nearby
Mesoscale Discussions in North Carolina, 2004Every mesoscale discussion in 2004
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.