Alert archive / North Carolina / Mesoscale Discussions in 2003

Mesoscale Discussion 198

March 6, 200325 counties in North Carolina; Dillon County, Horry County, Marion County, South Carolina

The Storm Prediction Center issued this mesoscale discussion at Mar 6, 2003, 2:34 AM EST for 25 counties in North Carolina; Dillon County, Horry County, Marion County, South Carolina. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Mar 6, 2003, 2:34 AM EST (07:34 UTC)
Expired
Mar 6, 2003, 4:00 AM EST
In force
86 min
Issued by
the Storm Prediction Center
All 28 counties

Beaufort County, NC, Bladen County, NC, Brunswick County, NC, Carteret County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Greene County, NC, Harnett County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, New Hanover County, NC, Onslow County, NC, Pamlico County, NC, Pender County, NC, Pitt County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Wayne County, NC, Wilson County, NC, Dillon County, SC, Horry County, SC, Marion County, SC

The radar

The Wilmington radar (KLTX), 95 km from the middle of the area, began a volume at 07:34 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 00:00Z, 7.6 hours before the alert went out and 107 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, Newport, NC at 00:00Z on 2003-03-06Temperature 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, Newport, NC at 00:00Z on 2003-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
1258 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
68 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
Mar 6, 12:45 AM ESTMesoscale DiscussionSPCRobeson60 min
Mar 5, 10:52 PM ESTMesoscale DiscussionSPCAiken, Allendale, Bamberg, Barnwell, Calhoun, Dorchester and 11 more53 min
Mar 5, 11:35 PM ESTSevere Thunderstorm WatchSPCAbbeville, Aiken, Allendale, Bamberg, Barnwell, Calhoun and 14 more5 hr
Mar 6, 3:16 AM ESTMesoscale DiscussionSPCAbbeville, Aiken, Allendale, Bamberg, Barnwell, Calhoun and 14 more59 min

Nearby

Mesoscale Discussions in North Carolina, 2003Mesoscale Discussions in South 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.