Alert archive / South Carolina / Mesoscale Discussions in 2008

Mesoscale Discussion 419

March 15, 200810 counties in North Carolina; 13 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Mar 15, 2008, 11:30 AM EDT for 10 counties in North Carolina; 13 counties in South Carolina. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Mar 15, 2008, 11:30 AM EDT (15:30 UTC)
Expired: Mar 15, 2008, 12:30 PM EDT
In force: 60 min
Issued by: the Storm Prediction Center

All 23 counties

Anson County, NC, Bladen County, NC, Brunswick County, NC, Columbus County, NC, New Hanover County, NC, Pender County, NC, Richmond County, NC, Robeson County, NC, Scotland County, NC, Union County, NC, Berkeley County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Marlboro County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 74 km from the middle of the area, began a volume at 15:29 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 12:00Z, 3.5 hours before the alert went out and 135 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 585 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 636 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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.

Issued	Product	Office	Counties	Lasted
Mar 15, 3:57 AM EDT	Mesoscale Discussion	SPC	Cherokee, Clay	93 min
Mar 15, 2:21 PM EDT	Mesoscale Discussion	SPC	Anson, Bladen, Brunswick, Columbus, Craven, Cumberland and 16 more	84 min
Mar 15, 4:36 PM EDT	Tornado Watch PDS	SPC	Anson, Bladen, Brunswick, Columbus, Cumberland, Harnett and 14 more	8 hr
Mar 15, 6:35 PM EDT	Mesoscale Discussion	SPC	Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 17 more	25 min
Mar 15, 6:59 PM EDT	Tornado Watch	SPC	Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 19 more	4 hr
Mar 15, 7:41 PM EDT	Mesoscale Discussion	SPC	Anson, Bladen, Brunswick, Columbus, Cumberland, Duplin and 15 more	64 min
Mar 15, 7:18 AM EDT	Mesoscale Discussion	SPC	Aiken, Allendale, Bamberg, Barnwell, Berkeley, Calhoun and 10 more	117 min
Mar 15, 11:02 AM EDT	Tornado Watch	SPC	Abbeville, Aiken, Anderson, Bamberg, Barnwell, Calhoun and 24 more	8 hr
Mar 15, 1:22 PM EDT	Mesoscale Discussion	SPC	Abbeville, Aiken, Anderson, Bamberg, Barnwell, Calhoun and 23 more	83 min
Mar 15, 6:17 PM EDT	Mesoscale Discussion	SPC	Anderson, Cherokee, Greenville, Oconee, Pickens, Spartanburg and 2 more	28 min

Nearby

Mesoscale Discussions in South Carolina, 2008 Mesoscale Discussions in North Carolina, 2008 Every mesoscale discussion in 2008

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.