Alert archive / Alabama / Mesoscale Discussions in 2004

Mesoscale Discussion 2219

September 15, 200426 counties in Alabama; 5 counties in Florida; 26 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Sep 15, 2004, 10:35 PM CDT for 26 counties in Alabama; 5 counties in Florida; 26 counties in Georgia. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Sep 15, 2004, 10:35 PM CDT (03:35 UTC)
Expired
Sep 16, 2004, 12:30 AM CDT
In force
115 min
Issued by
the Storm Prediction Center
All 57 counties

Autauga County, AL, Barbour County, AL, Bibb County, AL, Bullock County, AL, Chambers County, AL, Chilton County, AL, Choctaw County, AL, Coffee County, AL, Coosa County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Elmore County, AL, Geneva County, AL, Greene County, AL, Hale County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Russell County, AL, Tallapoosa County, AL, Gadsden County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Wakulla County, FL, Baker County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Harris County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Miller County, GA, Mitchell County, GA, Muscogee County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Thomas County, GA, Troup County, GA, Webster 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

Birmingham, AL (KBMX), launched 00:00Z, 3.6 hours before the alert went out and 164 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, Birmingham, AL at 00:00Z on 2004-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 95 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, Birmingham, AL at 00:00Z on 2004-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 square meters per square second.193958Sfc1 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
95 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
648 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
251 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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
Sep 15, 8:09 PM CDTMesoscale DiscussionSPCBaldwin, Barbour, Bullock, Butler, Clarke, Coffee and 17 more2 hr
Sep 16, 1:10 AM CDTTornado WatchSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 34 more9 hr
Sep 16, 2:57 AM CDTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 33 more2 hr
Sep 16, 7:03 AM CDTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 32 more117 min
Sep 16, 9:09 AM CDTMesoscale DiscussionSPCAutauga, Barbour, Bullock, Butler, Calhoun, Chambers and 25 more66 min
Sep 16, 9:45 AM CDTTornado WatchSPCAutauga, Barbour, Bullock, Calhoun, Chambers, Cherokee and 17 more10 hr
Sep 16, 9:50 AM CDTTornado WatchSPCCoffee, Dale, Geneva, Henry, Houston, Pike10 hr
Sep 16, 1:16 PM CDTMesoscale DiscussionSPCBarbour, Bullock, Calhoun, Chambers, Cherokee, Clay and 15 more119 min
Sep 16, 5:38 PM CDTMesoscale DiscussionSPCCalhoun, Chambers, Cherokee, Clay, Cleburne, DeKalb and 6 more2 hr
Sep 16, 5:00 AM CDTTornado WatchSPCColumbia, Dixie, Gilchrist, Hamilton, Lafayette, Madison and 2 more5 hr
Sep 16, 9:58 AM CDTMesoscale DiscussionSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 16 more2 hr
Sep 16, 11:20 AM CDTTornado WatchSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 19 more9 hr
Sep 16, 2:31 PM CDTMesoscale DiscussionSPCBulloch, Burke, Candler, Columbia, Effingham, Emanuel and 11 more119 min

Nearby

Mesoscale Discussions in Alabama, 2004Mesoscale 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.