Alert archive / North Carolina / Mesoscale Discussions in 2003

Mesoscale Discussion 1578

July 2, 2003Columbus County, Jones County, Pender County, North Carolina; Georgetown County, Horry County, South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2003, 10:49 AM EDT for Columbus County, Jones County, Pender County, North Carolina; Georgetown County, Horry County, South Carolina. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
Jul 2, 2003, 10:49 AM EDT (14:49 UTC)
Expired
Jul 2, 2003, 12:45 PM EDT
In force
116 min
Issued by
the Storm Prediction Center

Counties Columbus County, NC, Jones County, NC, Pender County, NC, Georgetown County, SC, Horry County, SC

The radar

The Wilmington radar (KLTX), 65 km from the middle of the area, began a volume at 14:53 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 12:00Z, 2.8 hours before the alert went out and 113 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 12:00Z on 2003-07-02Temperature 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 12:00Z on 2003-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 199 square meters per square second.193958Sfc1 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
1421 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
199 m²/s²
0-3 km storm-relative helicity
341 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
Jul 2, 2:20 AM EDTTornado WatchSPCBladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 10 more7 hr
Jul 2, 5:32 AM EDTMesoscale DiscussionSPCBladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 10 more58 min
Jul 2, 7:52 AM EDTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Carteret, Chowan and 23 more53 min
Jul 2, 8:15 AM EDTTornado WatchSPCBeaufort, Bertie, Bladen, Brunswick, Chowan, Columbus and 18 more6 hr
Jul 2, 2:26 PM EDTMesoscale DiscussionSPCAnson, Bladen, Brunswick, Chatham, Columbus, Cumberland and 18 more2 hr
Jul 2, 2:55 PM EDTTornado WatchSPCBladen, Brunswick, Columbus, Craven, Cumberland, Duplin and 19 more5 hr
Jul 2, 6:22 PM EDTMesoscale DiscussionSPCAnson, Beaufort, Bladen, Brunswick, Carteret, Columbus and 27 more53 min
Jul 2, 7:50 PM EDTTornado WatchSPCBeaufort, Bertie, Bladen, Camden, Carteret, Chowan and 31 more5 hr
Jul 1, 8:12 PM EDTMesoscale DiscussionSPCAiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 12 more2 hr
Jul 1, 9:55 PM EDTTornado WatchSPCAiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 18 more6 hr
Jul 2, 12:25 AM EDTMesoscale DiscussionSPCAiken, Allendale, Bamberg, Barnwell, Beaufort, Berkeley and 20 more2 hr

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.