Alert archive / Georgia / Mesoscale Discussions in 2016

Mesoscale Discussion 316

March 31, 20169 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2016, 8:09 PM EDT for 9 counties in Georgia. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Mar 31, 2016, 8:09 PM EDT (00:09 UTC)
Expired: Mar 31, 2016, 9:45 PM EDT
In force: 96 min
Issued by: the Storm Prediction Center
Chance of a watch: 5%

Counties Brooks County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Grady County, GA, Lowndes County, GA, Mitchell County, GA, Seminole County, GA, Thomas County, GA

The radar

The Tallahassee radar (KTLH), 79 km from the middle of the area, began a volume at 00:13 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 0.2 hours before the alert went out and 77 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: 643 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 675 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 4.9

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
Mar 31, 8:41 PM EDT	Mesoscale Discussion	SPC	Barrow, Bartow, Butts, Carroll, Catoosa, Chattahoochee and 42 more	94 min
Mar 31, 9:14 PM EDT	Tornado Watch	SPC	Banks, Barrow, Bartow, Bibb, Butts, Carroll and 65 more	18 hr
Mar 31, 11:11 PM EDT	Mesoscale Discussion	SPC	Bartow, Bibb, Butts, Carroll, Catoosa, Chattahoochee and 43 more	64 min
Apr 1, 1:31 AM EDT	Mesoscale Discussion	SPC	Baldwin, Bleckley, Burke, Columbia, Dodge, Elbert and 18 more	89 min
Apr 1, 3:03 AM EDT	Mesoscale Discussion	SPC	Chattahoochee, Harris, Marion, Muscogee, Stewart	57 min
Apr 1, 5:46 AM EDT	Mesoscale Discussion	SPC	Calhoun, Chattahoochee, Clay, Crisp, Dooly, Dougherty and 17 more	89 min
Apr 1, 7:26 AM EDT	Tornado Watch	SPC	Baker, Baldwin, Ben Hill, Bibb, Bleckley, Bryan and 54 more	12 hr
Apr 1, 11:40 AM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 69 more	2 hr
Apr 1, 2:00 PM EDT	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 54 more	60 min
Apr 1, 2:48 PM EDT	Tornado Watch	SPC	Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 50 more	6 hr
Apr 1, 5:40 PM EDT	Mesoscale Discussion	SPC	Brantley, Bryan, Camden, Charlton, Chatham, Clinch and 9 more	65 min

Nearby

Mesoscale Discussions in Georgia, 2016 Every mesoscale discussion in 2016

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.