Alert archive / South Carolina / Mesoscale Discussions in 2023

Mesoscale Discussion 352

March 26, 20235 counties in North Carolina; 10 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Mar 26, 2023, 9:43 AM EDT for 5 counties in North Carolina; 10 counties in South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Mar 26, 2023, 9:43 AM EDT (13:43 UTC)
Expired: Mar 26, 2023, 11:45 AM EDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch possible
Chance of a watch: 40%

Counties Bladen County, NC, Brunswick County, NC, Columbus County, NC, New Hanover County, NC, Pender County, NC, Clarendon County, SC, Darlington County, SC, Dillon County, SC, Florence County, SC, Georgetown County, SC, Horry County, SC, Lee County, SC, Marion County, SC, Sumter County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 56 km from the middle of the area, began a volume at 13:44 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, 1.7 hours before the alert went out and 153 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: 609 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 752 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 26, 4:49 AM EDT	Mesoscale Discussion	SPC	Beaufort, Camden, Carteret, Chowan, Craven, Cumberland and 16 more	116 min
Mar 26, 6:04 AM EDT	Mesoscale Discussion	SPC	Aiken, Allendale, Bamberg, Barnwell, Berkeley, Calhoun and 15 more	116 min
Mar 26, 6:32 AM EDT	Severe Thunderstorm Watch	SPC	Aiken, Allendale, Bamberg, Barnwell, Calhoun, Clarendon and 9 more	6 hr

Nearby

Mesoscale Discussions in South Carolina, 2023 Mesoscale Discussions in North Carolina, 2023 Every mesoscale discussion in 2023

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.