Alert archive / Georgia / Mesoscale Discussions in 2003

Mesoscale Discussion 2527

November 18, 200322 counties in Alabama; 11 counties in Florida; 33 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Nov 18, 2003, 4:31 PM CST for 22 counties in Alabama; 11 counties in Florida; 33 counties in Georgia. It was in force for 29 min.

The area

The outline as issued.

The facts

Issued
Nov 18, 2003, 4:31 PM CST (22:31 UTC)
Expired
Nov 18, 2003, 5:00 PM CST
In force
29 min
Issued by
the Storm Prediction Center
All 66 counties

Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Clay County, AL, Cleburne County, AL, Coffee County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Elmore County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Tallapoosa County, AL, Bay County, FL, Calhoun County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Calhoun County, GA, Carroll County, GA, Chattahoochee County, GA, Clay County, GA, Coweta County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Fayette County, GA, Grady County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Lee County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Muscogee County, GA, Pike County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Troup County, GA, Upson 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.5 hours before the alert went out and 176 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 2003-11-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2003-11-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Nov 18, 6:08 AM CSTMesoscale DiscussionSPCChoctaw, Colbert, Franklin, Lamar, Marion, Pickens and 1 more2 hr
Nov 18, 6:55 AM CSTTornado WatchSPCChoctaw, Colbert, Fayette, Franklin, Greene, Lamar and 9 more5 hr
Nov 18, 8:58 AM CSTMesoscale DiscussionSPCBaldwin, Butler, Coffee, Conecuh, Covington, Crenshaw and 4 more92 min
Nov 18, 10:30 AM CSTMesoscale DiscussionSPCBaldwin, Bibb, Blount, Butler, Chilton, Choctaw and 26 more90 min
Nov 18, 11:25 AM CSTTornado WatchSPCAutauga, Baldwin, Bibb, Blount, Butler, Calhoun and 38 more6 hr
Nov 18, 1:33 PM CSTMesoscale DiscussionSPCDeKalb, Jackson, Madison57 min
Nov 18, 1:55 PM CSTTornado WatchSPCDeKalb, Jackson5 hr
Nov 18, 1:59 PM CSTMesoscale DiscussionSPCAutauga, Barbour, Bullock, Butler, Calhoun, Chambers and 23 more91 min
Nov 18, 4:55 PM CSTTornado WatchSPCBarbour, Bullock, Chambers, Coffee, Covington, Crenshaw and 11 more5 hr
Nov 18, 3:26 PM CSTMesoscale DiscussionSPCFannin, Gilmer, Gordon, Murray, Whitfield94 min
Nov 18, 4:58 PM CSTMesoscale DiscussionSPCCatoosa, Chattooga, Dade, Fannin, Murray, Walker and 1 more32 min

Nearby

Mesoscale Discussions in Georgia, 2003Mesoscale Discussions in Alabama, 2003Mesoscale Discussions in Florida, 2003Every mesoscale discussion in 2003

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.