Alert archive / South Carolina / Mesoscale Discussions in 2006

Mesoscale Discussion 783

May 7, 20066 counties in Georgia; 7 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at May 7, 2006, 3:55 PM EDT for 6 counties in Georgia; 7 counties in South Carolina. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 7, 2006, 3:55 PM EDT (19:55 UTC)
Expired: May 7, 2006, 6:00 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Bryan County, GA, Bulloch County, GA, Chatham County, GA, Effingham County, GA, Liberty County, GA, Screven County, GA, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 58 km from the middle of the area, began a volume at 19:55 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

Jacksonville, FL (KJAX), launched 12:00Z, 7.9 hours before the alert went out and 252 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: 816 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 923 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

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
May 7, 10:56 AM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 66 more	2 hr
May 7, 11:25 AM EDT	Severe Thunderstorm Watch	SPC	Baker, Ben Hill, Berrien, Bibb, Bleckley, Brooks and 50 more	7 hr
May 7, 12:48 PM EDT	Tornado Watch	SPC	Bryan, Bulloch, Candler, Chatham, Effingham, Evans and 6 more	7 hr
May 7, 1:11 PM EDT	Severe Thunderstorm Watch	SPC	Appling, Atkinson, Bacon, Brantley, Camden, Charlton and 8 more	6 hr
May 7, 3:11 PM EDT	Mesoscale Discussion	SPC	Brooks, Grady, Thomas	2 hr
May 7, 7:05 PM EDT	Mesoscale Discussion	SPC	Appling, Bacon, Baldwin, Ben Hill, Bibb, Bleckley and 49 more	55 min

Nearby

Mesoscale Discussions in South Carolina, 2006 Mesoscale Discussions in Georgia, 2006 Every mesoscale discussion in 2006

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.