Alert archive / Alabama / Mesoscale Discussions in 2008

Mesoscale Discussion 56

January 10, 200822 counties in Alabama; 6 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jan 10, 2008, 9:38 PM CST for 22 counties in Alabama; 6 counties in Georgia. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: Jan 10, 2008, 9:38 PM CST (03:38 UTC)
Expired: Jan 10, 2008, 10:45 PM CST
In force: 67 min
Issued by: the Storm Prediction Center

All 28 counties

Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Elmore County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Tallapoosa County, AL, Chattahoochee County, GA, Harris County, GA, Meriwether County, GA, Muscogee County, GA, Stewart County, GA, Troup 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, 3.6 hours before the alert went out and 174 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

Issued	Product	Office	Counties	Lasted
Jan 10, 7:52 PM CST	Mesoscale Discussion	SPC	Autauga, Baldwin, Barbour, Bullock, Butler, Calhoun and 33 more	53 min
Jan 11, 1:21 AM CST	Tornado Watch	SPC	Coffee, Covington, Dale, Geneva, Henry, Houston	7 hr
Jan 11, 4:30 AM CST	Mesoscale Discussion	SPC	Houston	90 min
Jan 10, 6:29 PM CST	Mesoscale Discussion	SPC	Bartow, Catoosa, Chattooga, Cherokee, Dawson, Fannin and 12 more	61 min
Jan 10, 11:18 PM CST	Mesoscale Discussion	SPC	Bibb, Bleckley, Calhoun, Chattahoochee, Clay, Crawford and 23 more	87 min
Jan 10, 11:55 PM CST	Tornado Watch	SPC	Baldwin, Bibb, Bleckley, Chattahoochee, Clay, Crawford and 39 more	6 hr
Jan 11, 2:05 AM CST	Mesoscale Discussion	SPC	Baldwin, Burke, Columbia, Emanuel, Glascock, Greene and 13 more	85 min
Jan 11, 3:27 AM CST	Mesoscale Discussion	SPC	Bleckley, Calhoun, Clay, Crisp, Dodge, Dooly and 14 more	63 min

Nearby

Mesoscale Discussions in Alabama, 2008 Mesoscale Discussions in Georgia, 2008 Every 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.