Alert archive / Georgia / Mesoscale Discussions in 2006

Mesoscale Discussion 856

May 13, 200619 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at May 13, 2006, 11:45 PM EDT for 19 counties in Georgia. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: May 13, 2006, 11:45 PM EDT (03:45 UTC)
Expired: May 14, 2006, 12:45 AM EDT
In force: 60 min
Issued by: the Storm Prediction Center

Counties Bleckley County, GA, Crawford County, GA, Crisp County, GA, Dodge County, GA, Dooly County, GA, Houston County, GA, Lee County, GA, Macon County, GA, Peach County, GA, Pulaski County, GA, Schley County, GA, Sumter County, GA, Taylor County, GA, Telfair County, GA, Terrell County, GA, Twiggs County, GA, Webster County, GA, Wilcox County, GA, Wilkinson County, GA

The radar

The Robins AFB radar (KJGX), 80 km from the middle of the area, began a volume at 03:45 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 00:00Z, 3.8 hours before the alert went out and 135 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: 181 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 1280 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 205 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.4

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 13, 8:11 PM EDT	Severe Thunderstorm Watch	SPC	Elbert, Franklin, Habersham, Hart, Rabun, Stephens	5 hr
May 13, 8:51 PM EDT	Mesoscale Discussion	SPC	Bibb, Butts, Carroll, Chattahoochee, Clayton, Coweta and 20 more	54 min
May 14, 12:21 AM EDT	Mesoscale Discussion	SPC	Banks, Barrow, Bartow, Catoosa, Chattooga, Cherokee and 29 more	54 min
May 14, 5:00 AM EDT	Mesoscale Discussion	SPC	Banks, Elbert, Franklin, Habersham, Hart, Madison and 1 more	90 min
May 14, 3:22 PM EDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Bleckley, Calhoun, Chattahoochee, Clay and 28 more	113 min
May 14, 3:32 PM EDT	Severe Thunderstorm Watch	SPC	Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 11 more	6 hr
May 14, 4:56 PM EDT	Severe Thunderstorm Watch	SPC	Appling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 54 more	6 hr
May 14, 4:58 PM EDT	Mesoscale Discussion	SPC	Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 13 more	92 min
May 14, 6:52 PM EDT	Tornado Watch	SPC	Jenkins, Screven	5 hr

Nearby

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.