Alert archive / North Carolina / Mesoscale Discussions in 2003

Mesoscale Discussion 782

May 6, 20035 counties in Georgia; 20 counties in North Carolina; 4 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at May 6, 2003, 6:23 AM EDT for 5 counties in Georgia; 20 counties in North Carolina; 4 counties in South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 6, 2003, 6:23 AM EDT (10:23 UTC)
Expired
May 6, 2003, 8:30 AM EDT
In force
2 hr
Issued by
the Storm Prediction Center
All 29 counties

Burke County, GA, Columbia County, GA, Jefferson County, GA, McDuffie County, GA, Richmond County, GA, Beaufort County, NC, Carteret County, NC, Chowan County, NC, Craven County, NC, Dare County, NC, Greene County, NC, Hyde County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, New Hanover County, NC, Onslow County, NC, Pamlico County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Robeson County, NC, Tyrrell County, NC, Washington County, NC, Wayne County, NC, Aiken County, SC, Dillon County, SC, Florence County, SC, Sumter County, SC

The radar

The Wilmington radar (KLTX), 68 km from the middle of the area, began a volume at 10:24 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

Charleston AFB, SC (KCHS), launched 00:00Z, 10.4 hours before the alert went out and 176 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, Charleston AFB, SC at 00:00Z on 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2251 joules per kilogram.LCLEL10008507005003002001001 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, Charleston AFB, SC at 00:00Z on 2003-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 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
2251 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
512 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
2.3
Supercell composite
10.8

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
May 5, 8:53 PM EDTMesoscale DiscussionSPCBartow, Carroll, Chattooga, Cherokee, Cobb, Dade and 9 more2 hr
May 5, 9:30 PM EDTTornado WatchSPCBaldwin, Barrow, Bibb, Butts, Carroll, Clarke and 43 more8 hr
May 5, 11:27 PM EDTMesoscale DiscussionSPCBanks, Barrow, Bartow, Butts, Carroll, Cherokee and 34 more2 hr
May 6, 1:55 AM EDTTornado WatchSPCBurke, Columbia, Jefferson, Lincoln, McDuffie, Richmond6 hr
May 6, 2:50 AM EDTTornado WatchSPCChattooga, Dade6 hr
May 6, 2:53 AM EDTMesoscale DiscussionSPCBaldwin, Barrow, Butts, Carroll, Clarke, Clayton and 40 more2 hr
May 6, 6:06 AM EDTMesoscale DiscussionSPCChattooga, Dade3 hr
May 6, 8:40 AM EDTTornado WatchSPCChattooga, Dade, Walker5 hr
May 6, 10:45 AM EDTSevere Thunderstorm WatchSPCBanks, Barrow, Bartow, Carroll, Catoosa, Chattooga and 41 more5 hr
May 6, 11:26 AM EDTMesoscale DiscussionSPCChattooga, Dade2 hr
May 6, 1:15 PM EDTMesoscale DiscussionSPCBanks, Barrow, Bartow, Butts, Carroll, Chattooga and 50 more90 min
May 6, 1:30 PM EDTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Burke, Butts and 59 more7 hr
May 6, 2:18 PM EDTMesoscale DiscussionSPCEffingham, Screven117 min
May 6, 4:41 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bartow, Bibb, Burke and 60 more2 hr
May 5, 11:05 PM EDTMesoscale DiscussionSPCAiken, Berkeley, Calhoun, Chester, Chesterfield, Clarendon and 17 more3 hr
May 6, 2:40 PM EDTTornado WatchSPCAiken, Allendale, Bamberg, Barnwell, Berkeley, Calhoun and 20 more5 hr

Nearby

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