Alert archive / Georgia / Mesoscale Discussions in 2012

Mesoscale Discussion 1038

June 3, 201220 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2012, 7:51 PM EDT for 20 counties in Georgia. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: Jun 3, 2012, 7:51 PM EDT (23:51 UTC)
Expired: Jun 3, 2012, 8:45 PM EDT
In force: 54 min
Issued by: the Storm Prediction Center

Counties Chattahoochee County, GA, Crawford County, GA, Harris County, GA, Heard County, GA, Lamar County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Monroe County, GA, Muscogee County, GA, Peach County, GA, Pike County, GA, Schley County, GA, Spalding County, GA, Stewart County, GA, Talbot County, GA, Taylor County, GA, Troup County, GA, Upson County, GA, Webster County, GA

The radar

The Atlanta radar (KFFC), 70 km from the middle of the area, began a volume at 23:51 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.9 hours before the alert went out and 72 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: 12 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1374 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 232 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 3, 5:39 PM EDT	Mesoscale Discussion	SPC	Carroll, Chattahoochee, Clayton, Cobb, Coweta, DeKalb and 20 more	66 min
Jun 3, 6:00 PM EDT	Severe Thunderstorm Watch	SPC	Chattahoochee, Coweta, Crawford, Harris, Heard, Lamar and 14 more	115 min

Nearby

Mesoscale Discussions in Georgia, 2012 Every mesoscale discussion in 2012

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.