Alert archive / Georgia / Mesoscale Discussions in 2016

Mesoscale Discussion 135

February 24, 20168 counties in Florida; 45 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Feb 24, 2016, 1:44 AM EST for 8 counties in Florida; 45 counties in Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Feb 24, 2016, 1:44 AM EST (06:44 UTC)
Expired
Feb 24, 2016, 3:45 AM EST
In force
2 hr
Issued by
the Storm Prediction Center
All 53 counties

Franklin County, FL, Gadsden County, FL, Hamilton County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Ben Hill County, GA, Berrien County, GA, Bleckley County, GA, Brantley County, GA, Brooks County, GA, Bulloch County, GA, Candler County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Dodge County, GA, Echols County, GA, Emanuel County, GA, Evans County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Johnson County, GA, Lanier County, GA, Laurens County, GA, Long County, GA, Lowndes County, GA, Montgomery County, GA, Pierce County, GA, Pulaski County, GA, Tattnall County, GA, Telfair County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Twiggs County, GA, Ware County, GA, Washington County, GA, Wayne County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA

The radar

The Moody AFB radar (KVAX), 64 km from the middle of the area, began a volume at 06:44 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 6.7 hours before the alert went out and 94 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2016-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 100 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2016-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
100 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
605 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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.

IssuedProductOfficeCountiesLasted
Feb 23, 7:51 PM ESTMesoscale DiscussionSPCEscambia54 min
Feb 23, 9:08 PM ESTTornado WatchSPCBay, Calhoun, Dixie, Escambia, Franklin, Gadsden and 14 more9 hr
Feb 23, 10:07 PM ESTMesoscale DiscussionSPCBay, Holmes, Jackson, Okaloosa, Walton, Washington53 min
Feb 24, 3:58 AM ESTTornado WatchSPCAlachua, Baker, Bradford, Citrus, Columbia, Gilchrist and 12 more6 hr
Feb 24, 6:48 AM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 7 more87 min
Feb 24, 8:36 AM ESTMesoscale DiscussionSPCCharlotte, Clay, DeSoto, Hardee, Hernando, Highlands and 11 more84 min
Feb 24, 11:42 AM ESTMesoscale DiscussionSPCBrevard, Charlotte, Collier, DeSoto, Glades, Hardee and 18 more63 min
Feb 24, 12:14 AM ESTTornado WatchSPCBibb, Bleckley, Chattahoochee, Crawford, Crisp, Dodge and 27 more6 hr
Feb 24, 8:14 AM ESTMesoscale DiscussionSPCBanks, Barrow, Dawson, Fannin, Forsyth, Franklin and 12 more2 hr

Nearby

Mesoscale Discussions in Georgia, 2016Mesoscale Discussions in Florida, 2016Every 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.