Alert archive / Georgia / Mesoscale Discussions in 2004

Mesoscale Discussion 294

April 8, 200418 counties in Alabama; 11 counties in Florida; 57 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Apr 8, 2004, 12:11 PM CDT for 18 counties in Alabama; 11 counties in Florida; 57 counties in Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Apr 8, 2004, 12:11 PM CDT (17:11 UTC)
Expired
Apr 8, 2004, 2:15 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 86 counties

Barbour County, AL, Bullock County, AL, Butler County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lowndes County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Wilcox County, AL, Escambia County, FL, Gadsden County, FL, Hamilton County, FL, Holmes County, FL, Jackson County, FL, Leon County, FL, Nassau County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Calhoun County, GA, Camden County, GA, Charlton County, GA, Clay 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, Early County, GA, Echols County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Pierce County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Tattnall County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.2 hours before the alert went out and 117 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 2004-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1201 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 2004-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 212 square meters per square second.1939587897117Sfc1 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
1201 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
486 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
212 m²/s²
0-3 km storm-relative helicity
234 m²/s²
Significant tornado parameter
1.6
Supercell composite
7.0

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
Apr 7, 8:53 PM CDTMesoscale DiscussionSPCAutauga, Butler, Chilton, Choctaw, Clarke, Conecuh and 11 more67 min
Apr 8, 8:50 AM CDTMesoscale DiscussionSPCBarbour, Coffee, Conecuh, Covington, Crenshaw, Dale and 5 more85 min
Apr 8, 9:10 AM CDTSevere Thunderstorm WatchSPCBarbour, Bullock, Butler, Coffee, Conecuh, Covington and 12 more7 hr
Apr 8, 12:56 PM CDTMesoscale DiscussionSPCChambers, Clay, Cleburne, Lee, Macon, Randolph and 1 more3 hr
Apr 8, 9:16 AM CDTMesoscale DiscussionSPCAlachua, Bradford, Citrus, Clay, Duval, Flagler and 13 more119 min
Apr 8, 9:45 AM CDTSevere Thunderstorm WatchSPCAlachua, Bradford, Citrus, Clay, Flagler, Gilchrist and 11 more6 hr
Apr 8, 11:42 AM CDTMesoscale DiscussionSPCAlachua, Bradford, Citrus, Clay, Flagler, Gilchrist and 11 more2 hr
Apr 8, 2:35 PM CDTMesoscale DiscussionSPCBrevard, Hardee, Highlands, Hillsborough, Indian River, Okeechobee and 6 more55 min
Apr 8, 2:40 PM CDTMesoscale DiscussionSPCNassau65 min

Nearby

Mesoscale Discussions in Georgia, 2004Mesoscale Discussions in Alabama, 2004Mesoscale Discussions in Florida, 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.