Alert archive / South Carolina / Mesoscale Discussions in 2003

Mesoscale Discussion 1571

July 1, 20034 counties in Georgia; 11 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2003, 5:26 PM EDT for 4 counties in Georgia; 11 counties in South Carolina. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Jul 1, 2003, 5:26 PM EDT (21:26 UTC)
Expired: Jul 1, 2003, 7:00 PM EDT
In force: 94 min
Issued by: the Storm Prediction Center

Counties Bryan County, GA, Chatham County, GA, Effingham County, GA, Liberty County, GA, Allendale County, SC, Bamberg County, SC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC, Orangeburg County, SC

The radar

The Charleston,SC radar (KCLX), 26 km from the middle of the area, began a volume at 21:25 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 614Jul 1, 6:00 PM EDT

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.4 hours before the alert went out and 89 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: 460 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1014 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 133 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.

Issued	Product	Office	Counties	Lasted
Jun 30, 8:22 PM EDT	Mesoscale Discussion	SPC	Baker, Brooks, Calhoun, Clay, Decatur, Early and 5 more	113 min
Jul 1, 2:25 AM EDT	Tornado Watch	SPC	Baker, Calhoun, Carroll, Chattahoochee, Clay, Coweta and 18 more	9 hr
Jul 1, 5:26 AM EDT	Mesoscale Discussion	SPC	Baker, Calhoun, Carroll, Chattahoochee, Clay, Coweta and 17 more	2 hr
Jul 1, 8:28 AM EDT	Mesoscale Discussion	SPC	Baker, Baldwin, Banks, Barrow, Bibb, Bleckley and 75 more	62 min
Jul 1, 10:40 AM EDT	Tornado Watch	SPC	Baker, Bibb, Brooks, Butts, Calhoun, Carroll and 60 more	6 hr
Jul 1, 1:57 PM EDT	Mesoscale Discussion	SPC	Chattahoochee, Harris, Muscogee, Quitman, Stewart	2 hr
Jul 1, 3:49 PM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 105 more	116 min
Jul 1, 4:05 PM EDT	Tornado Watch	SPC	Appling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 74 more	6 hr
Jul 1, 6:00 PM EDT	Tornado Watch	SPC	Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 21 more	4 hr

Nearby

Mesoscale Discussions in South Carolina, 2003 Mesoscale Discussions in Georgia, 2003 Every 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.