Alert archive / North Carolina / Mesoscale Discussions in 2004

Mesoscale Discussion 2469

November 24, 200432 counties in North Carolina; 13 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Nov 24, 2004, 4:50 PM EST for 32 counties in North Carolina; 13 counties in South Carolina. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Nov 24, 2004, 4:50 PM EST (21:50 UTC)
Expired
Nov 24, 2004, 6:45 PM EST
In force
115 min
Issued by
the Storm Prediction Center
All 45 counties

Alamance County, NC, Anson County, NC, Bladen County, NC, Brunswick County, NC, Caswell County, NC, Chatham County, NC, Columbus County, NC, Cumberland County, NC, Davidson County, NC, Durham County, NC, Forsyth County, NC, Franklin County, NC, Granville County, NC, Guilford County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Robeson County, NC, Rockingham County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Stokes County, NC, Vance County, NC, Wake County, NC, Berkeley County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Lee County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC

The radar

The Raleigh/Durham radar (KRAX), 120 km from the middle of the area, began a volume at 21:57 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.8 hours before the alert went out and 131 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.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2004-11-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2004-11-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
513 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
233 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 24, 10:23 AM ESTMesoscale DiscussionSPCUnion97 min
Nov 24, 10:40 AM ESTTornado WatchSPCUnion6 hr
Nov 24, 2:13 PM ESTMesoscale DiscussionSPCAnson, Bladen, Brunswick, Columbus, Cumberland, Duplin and 10 more2 hr
Nov 24, 3:25 PM ESTSevere Thunderstorm WatchSPCAlamance, Anson, Bladen, Brunswick, Caswell, Chatham and 29 more6 hr

Nearby

Mesoscale Discussions in North Carolina, 2004Mesoscale Discussions in South 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.