Alert archive / Georgia / Mesoscale Discussions in 2019

Mesoscale Discussion 615

May 11, 201913 counties in Georgia; 6 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at May 11, 2019, 6:11 PM EDT for 13 counties in Georgia; 6 counties in South Carolina. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: May 11, 2019, 6:11 PM EDT (22:11 UTC)
Expired: May 11, 2019, 7:45 PM EDT
In force: 94 min
Issued by: the Storm Prediction Center

Counties Bulloch County, GA, Burke County, GA, Candler County, GA, Columbia County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Jefferson County, GA, Jenkins County, GA, McDuffie County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Edgefield County, SC, Hampton County, SC

The radar

The Charleston,SC radar (KCLX), 101 km from the middle of the area, began a volume at 22:13 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, 10.2 hours before the alert went out and 184 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: 4 J/kg
Mixed-layer CIN: -171 J/kg
Mixed-layer LCL: 918 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
May 11, 2:15 PM EDT	Mesoscale Discussion	SPC	Baker, Baldwin, Ben Hill, Berrien, Bibb, Bleckley and 63 more	2 hr
May 11, 3:48 PM EDT	Severe Thunderstorm Watch	SPC	Baldwin, Bibb, Bleckley, Crawford, Crisp, Dodge and 24 more	3 hr
May 11, 2:45 PM EDT	Mesoscale Discussion	SPC	Cherokee, Chester, Chesterfield, Lancaster, Laurens, Marlboro and 2 more	2 hr

Nearby

Mesoscale Discussions in Georgia, 2019 Mesoscale Discussions in South Carolina, 2019 Every mesoscale discussion in 2019

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.