Alert archive / Georgia / Mesoscale Discussions in 2004

Mesoscale Discussion 2527

December 9, 2004Gadsden County, Jackson County, Florida; 35 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Dec 9, 2004, 10:48 PM EST for Gadsden County, Jackson County, Florida; 35 counties in Georgia. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Dec 9, 2004, 10:48 PM EST (03:48 UTC)
Expired
Dec 10, 2004, 12:15 AM EST
In force
87 min
Issued by
the Storm Prediction Center
All 37 counties

Gadsden County, FL, Jackson County, FL, Baker County, GA, Ben Hill County, GA, Bleckley County, GA, Calhoun County, GA, Clay County, GA, Colquitt County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Irwin County, GA, Laurens County, GA, Lee County, GA, Macon County, GA, Miller County, GA, Mitchell County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA

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, 3.8 hours before the alert went out and 132 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 2004-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1502 joules per kilogram.LCLEL10008507005003002001001 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 2004-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 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
1502 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
471 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
1.0
Supercell composite
3.5

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
Dec 9, 11:25 PM ESTTornado WatchSPCJackson4 hr
Dec 10, 2:11 AM ESTMesoscale DiscussionSPCJackson64 min
Dec 10, 6:41 AM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 9 more3 hr
Dec 9, 7:15 PM ESTMesoscale DiscussionSPCBaldwin, Barrow, Bibb, Burke, Butts, Carroll and 44 more90 min
Dec 9, 9:05 PM ESTTornado WatchSPCBaldwin, Barrow, Bibb, Burke, Butts, Carroll and 51 more6 hr
Dec 10, 12:07 AM ESTMesoscale DiscussionSPCBaldwin, Barrow, Bibb, Burke, Butts, Carroll and 52 more83 min
Dec 10, 2:35 AM ESTTornado WatchSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 44 more6 hr
Dec 10, 6:00 AM ESTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 44 more2 hr
Dec 10, 11:12 AM ESTMesoscale DiscussionSPCBanks, Bartow, Catoosa, Chattooga, Cherokee, Dade and 19 more33 min
Dec 10, 12:53 PM ESTMesoscale DiscussionSPCCatoosa, Chattooga, Dade, Fannin, Gilmer, Gordon and 3 more2 hr

Nearby

Mesoscale Discussions in Georgia, 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.