Alert archive / North Carolina / Mesoscale Discussions in 2004
Mesoscale Discussion 918
The Storm Prediction Center issued this mesoscale discussion at May 26, 2004, 5:57 PM EDT for 33 counties in North Carolina. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2004, 5:57 PM EDT (21:57 UTC)
- Expired
- May 26, 2004, 7:00 PM EDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 33 counties
Alamance County, NC, Alexander County, NC, Anson County, NC, Cabarrus County, NC, Catawba County, NC, Chatham County, NC, Cumberland County, NC, Davidson County, NC, Davie County, NC, Durham County, NC, Gaston County, NC, Guilford County, NC, Harnett County, NC, Hoke County, NC, Iredell County, NC, Johnston County, NC, Lee County, NC, Lincoln County, NC, Mecklenburg County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Randolph County, NC, Richmond County, NC, Rowan County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Wayne County, NC, Wilson County, NC
The radar
The Raleigh/Durham radar (KRAX), 113 km from the middle of the area, began a volume at 21:56 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.0 hours before the alert went out and 70 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
- 266 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1644 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- 46 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 |
|---|---|---|---|---|
| May 26, 3:50 PM EDT | Mesoscale Discussion | SPC | Ashe, Avery, Watauga | 85 min |
| May 26, 4:25 PM EDT | Severe Thunderstorm Watch | SPC | Ashe, Avery, Burke, Caldwell, McDowell, Madison and 3 more | 6 hr |
| May 26, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | Caswell, Granville, Person, Rockingham, Stokes, Surry and 2 more | 5 hr |
| May 26, 6:27 PM EDT | Mesoscale Discussion | SPC | Avery, Burke, McDowell, Madison, Mitchell, Watauga and 1 more | 93 min |
| May 26, 6:55 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Alexander, Avery, Buncombe, Burke, Cabarrus and 37 more | 5 hr |
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; radar from the NEXRAD Level II archive.