Alert archive / Georgia / Mesoscale Discussions in 2014

Mesoscale Discussion 1810

October 3, 2014Geneva County, Henry County, Houston County, Alabama; 6 counties in Florida; 13 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Oct 3, 2014, 10:17 AM CDT for Geneva County, Henry County, Houston County, Alabama; 6 counties in Florida; 13 counties in Georgia. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Oct 3, 2014, 10:17 AM CDT (15:17 UTC)
Expired: Oct 3, 2014, 11:45 AM CDT
In force: 88 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 22 counties

Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Holmes County, FL, Jackson County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Calhoun County, GA, Clay County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Lee County, GA, Miller County, GA, Mitchell County, GA, Randolph County, GA, Seminole County, GA, Sumter County, GA, Terrell County, GA

The radar

The Ft Rucker radar (KEOX), 51 km from the middle of the area, began a volume at 15:17 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 3.3 hours before the alert went out and 115 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: 614 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 699 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.9

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
Oct 2, 11:50 PM CDT	Mesoscale Discussion	SPC	Colbert, Franklin, Lauderdale, Lawrence, Limestone, Marion	115 min
Oct 3, 2:11 AM CDT	Mesoscale Discussion	SPC	Blount, Cullman, Jackson, Limestone, Madison, Marshall and 3 more	2 hr

Nearby

Mesoscale Discussions in Georgia, 2014 Mesoscale Discussions in Florida, 2014 Mesoscale Discussions in Alabama, 2014 Every mesoscale discussion in 2014

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.