Alert archive / Georgia / Mesoscale Discussions in 2007

Mesoscale Discussion 18

January 5, 200723 counties in Florida; 62 counties in Georgia; 6 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Jan 5, 2007, 2:16 PM EST for 23 counties in Florida; 62 counties in Georgia; 6 counties in South Carolina. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Jan 5, 2007, 2:16 PM EST (19:16 UTC)
Expired
Jan 5, 2007, 4:15 PM EST
In force
119 min
Issued by
the Storm Prediction Center
All 91 counties

Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Franklin County, FL, Gadsden County, FL, Gilchrist County, FL, Gulf County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Nassau County, FL, Saint Johns County, FL, Suwannee County, FL, Taylor County, FL, Union 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, Bryan County, GA, Bulloch County, GA, Burke County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Lanier County, GA, Laurens County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Mitchell County, GA, Montgomery County, GA, Pierce County, GA, Pulaski County, GA, Screven 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, Allendale County, SC, Beaufort County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC

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 12:00Z, 7.3 hours before the alert went out and 105 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 12:00Z on 2007-01-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 501 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 12:00Z on 2007-01-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 196 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
501 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
468 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
196 m²/s²
0-3 km storm-relative helicity
185 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.9

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.

IssuedProductOfficeCountiesLasted
Jan 5, 1:47 AM ESTMesoscale DiscussionSPCBay, Calhoun, Escambia, Gulf, Holmes, Jackson and 4 more28 min
Jan 5, 2:15 AM ESTTornado WatchSPCBay, Calhoun, Escambia, Gulf, Holmes, Jackson and 4 more6 hr
Jan 5, 4:13 AM ESTMesoscale DiscussionSPCBay, Calhoun, Escambia, Gulf, Holmes, Jackson and 5 more62 min
Jan 5, 6:46 AM ESTMesoscale DiscussionSPCBay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 11 more59 min
Jan 5, 8:21 AM ESTTornado WatchSPCBay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 10 more8 hr
Jan 5, 10:02 AM ESTMesoscale DiscussionSPCBay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 10 more118 min
Jan 5, 12:31 PM ESTMesoscale DiscussionSPCBay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 4 more119 min
Jan 5, 2:49 PM ESTTornado WatchSPCAlachua, Baker, Bradford, Clay, Columbia, Dixie and 14 more7 hr
Jan 5, 6:35 PM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 4 more85 min
Jan 5, 12:06 PM ESTMesoscale DiscussionSPCBanks, Elbert, Forsyth, Franklin, Habersham, Hall and 6 more
Jan 5, 12:41 PM ESTTornado WatchSPCBurke, Columbia, Elbert, Franklin, Habersham, Hart and 5 more8 hr
Jan 5, 3:04 PM ESTMesoscale DiscussionSPCBurke, Columbia, Glascock, Jefferson, Lincoln, McDuffie and 3 more86 min
Jan 5, 4:26 PM ESTMesoscale DiscussionSPCAppling, Bryan, Bulloch, Candler, Chatham, Effingham and 13 more34 min
Jan 5, 4:35 PM ESTTornado WatchSPCBryan, Bulloch, Candler, Chatham, Effingham, Emanuel and 11 more7 hr
Jan 5, 4:20 PM ESTMesoscale DiscussionSPCMarlboro85 min
Jan 5, 5:53 PM ESTTornado WatchSPCDarlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more7 hr

Nearby

Mesoscale Discussions in Georgia, 2007Mesoscale Discussions in Florida, 2007Mesoscale Discussions in South Carolina, 2007Every mesoscale discussion in 2007

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.