Alert archive / Alabama / Mesoscale Discussions in 2008

Mesoscale Discussion 55

January 10, 200839 counties in Alabama; 35 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jan 10, 2008, 7:52 PM CST for 39 counties in Alabama; 35 counties in Georgia. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Jan 10, 2008, 7:52 PM CST (01:52 UTC)
Expired
Jan 10, 2008, 8:45 PM CST
In force
53 min
Issued by
the Storm Prediction Center
All 74 counties

Autauga County, AL, Baldwin County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Coffee County, AL, Conecuh County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, DeKalb County, AL, Elmore County, AL, Escambia County, AL, Etowah County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, St. Clair County, AL, Talladega County, AL, Tallapoosa County, AL, Washington County, AL, Wilcox County, AL, Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattahoochee County, GA, Chattooga County, GA, Cherokee County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Lumpkin County, GA, Meriwether County, GA, Murray County, GA, Muscogee County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Stewart County, GA, Troup County, GA, Union County, GA, Walker County, GA, Whitfield 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.9 hours before the alert went out and 140 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, Peachtre/Fal Fld, GA at 00:00Z on 2008-01-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 32 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, Peachtre/Fal Fld, GA at 00:00Z on 2008-01-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 297 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
32 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
980 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
297 m²/s²
0-3 km storm-relative helicity
349 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
Jan 10, 9:38 PM CSTMesoscale DiscussionSPCBarbour, Bullock, Butler, Chambers, Coffee, Conecuh and 16 more67 min
Jan 11, 1:21 AM CSTTornado WatchSPCCoffee, Covington, Dale, Geneva, Henry, Houston7 hr
Jan 11, 4:30 AM CSTMesoscale DiscussionSPCHouston90 min
Jan 10, 6:29 PM CSTMesoscale DiscussionSPCBartow, Catoosa, Chattooga, Cherokee, Dawson, Fannin and 12 more61 min
Jan 10, 11:18 PM CSTMesoscale DiscussionSPCBibb, Bleckley, Calhoun, Chattahoochee, Clay, Crawford and 23 more87 min
Jan 10, 11:55 PM CSTTornado WatchSPCBaldwin, Bibb, Bleckley, Chattahoochee, Clay, Crawford and 39 more6 hr
Jan 11, 2:05 AM CSTMesoscale DiscussionSPCBaldwin, Burke, Columbia, Emanuel, Glascock, Greene and 13 more85 min
Jan 11, 3:27 AM CSTMesoscale DiscussionSPCBleckley, Calhoun, Clay, Crisp, Dodge, Dooly and 14 more63 min

Nearby

Mesoscale Discussions in Alabama, 2008Mesoscale Discussions in Georgia, 2008Every mesoscale discussion in 2008

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.