Alert archive / Georgia / Mesoscale Discussions in 2004

Mesoscale Discussion 102

February 6, 200412 counties in Florida; 50 counties in Georgia; 5 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Feb 6, 2004, 6:30 PM EST for 12 counties in Florida; 50 counties in Georgia; 5 counties in South Carolina. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Feb 6, 2004, 6:30 PM EST (23:30 UTC)
Expired
Feb 6, 2004, 8:00 PM EST
In force
90 min
Issued by
the Storm Prediction Center
All 67 counties

Columbia County, FL, Gadsden County, FL, Gulf County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Suwannee County, FL, Taylor County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dodge County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis 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, Screven County, GA, Tattnall County, GA, Telfair County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA, Beaufort County, SC, Charleston County, SC, Colleton County, SC, Hampton County, SC, Jasper County, SC

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.5 hours before the alert went out and 120 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 2004-02-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 81 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 2004-02-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 311 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
81 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
514 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
311 m²/s²
0-3 km storm-relative helicity
335 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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
Feb 6, 8:32 AM ESTMesoscale DiscussionSPCBay, Calhoun, Holmes, Jackson, Okaloosa, Santa Rosa and 2 more118 min
Feb 6, 1:51 PM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 8 more2 hr
Feb 6, 2:15 PM ESTTornado WatchSPCColumbia, Gadsden, Gulf, Hamilton, Jefferson, Lafayette and 6 more5 hr
Feb 6, 4:23 PM ESTMesoscale DiscussionSPCBaker, Columbia, Hamilton, Jefferson, Madison, Suwannee2 hr
Feb 5, 11:55 PM ESTTornado WatchSPCHaralson5 hr
Feb 6, 6:00 PM ESTTornado WatchSPCBerkeley, Dorchester, Georgetown, Horry, Marion, Williamsburg5 hr

Nearby

Mesoscale Discussions in Georgia, 2004Mesoscale Discussions in Florida, 2004Mesoscale Discussions in South Carolina, 2004Every mesoscale discussion in 2004

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.