Alert archive / Alabama / Mesoscale Discussions in 2008

Mesoscale Discussion 45

January 10, 200819 counties in Alabama; 19 counties in Mississippi; 16 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Jan 10, 2008, 9:23 AM CST for 19 counties in Alabama; 19 counties in Mississippi; 16 counties in Tennessee. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued
Jan 10, 2008, 9:23 AM CST (15:23 UTC)
Expired
Jan 10, 2008, 10:30 AM CST
In force
67 min
Issued by
the Storm Prediction Center
All 54 counties

Bibb County, AL, Blount County, AL, Colbert County, AL, Cullman County, AL, Fayette County, AL, Franklin County, AL, Jefferson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, Pickens County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Alcorn County, MS, Calhoun County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Lowndes County, MS, Monroe County, MS, Noxubee County, MS, Oktibbeha County, MS, Pontotoc County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Webster County, MS, Winston County, MS, Bedford County, TN, Decatur County, TN, Giles County, TN, Hardin County, TN, Hickman County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Moore County, TN, Perry County, TN, Rutherford County, TN, Wayne County, TN, Williamson County, TN

The radar

The Columbus AFB radar (KGWX), 68 km from the middle of the area, began a volume at 15:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 3.4 hours before the alert went out and 179 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, Little Rock, AR at 12:00Z on 2008-01-10Temperature 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, Little Rock, AR at 12:00Z on 2008-01-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 square meters per square second.1939587897117Sfc1 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
535 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
279 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, 11:33 AM CSTTornado Watch PDSSPCBaldwin, Bibb, Blount, Choctaw, Clarke, Colbert and 27 more9 hr
Jan 10, 1:42 PM CSTMesoscale DiscussionSPCChoctaw, Clarke, Colbert, Cullman, Fayette, Franklin and 15 more93 min
Jan 10, 3:05 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 40 more115 min
Jan 10, 3:42 PM CSTMesoscale DiscussionSPCBibb, Blount, Chilton, Choctaw, Clarke, Colbert and 30 more93 min
Jan 10, 5:16 PM CSTTornado WatchSPCAutauga, Barbour, Bullock, Butler, Calhoun, Chambers and 27 more8 hr
Jan 10, 5:25 PM CSTMesoscale DiscussionSPCAutauga, Baldwin, Bibb, Blount, Chilton, Choctaw and 32 more95 min
Jan 10, 3:25 AM CSTMesoscale DiscussionSPCBolivar, Calhoun, Coahoma, Grenada, Lafayette, Leflore and 9 more2 hr
Jan 10, 7:17 AM CSTMesoscale DiscussionSPCAdams, Alcorn, Amite, Attala, Benton, Bolivar and 46 more118 min
Jan 10, 7:46 AM CSTTornado WatchSPCAdams, Alcorn, Amite, Attala, Benton, Bolivar and 53 more8 hr
Jan 10, 10:11 AM CSTMesoscale DiscussionSPCAdams, Amite, Clarke, Copiah, Covington, Forrest and 20 more64 min
Jan 10, 12:09 PM CSTMesoscale DiscussionSPCAdams, Alcorn, Amite, Attala, Benton, Calhoun and 45 more96 min
Jan 10, 7:52 AM CSTMesoscale DiscussionSPCCannon, Cheatham, Clay, Davidson, DeKalb, Dickson and 14 more113 min

Nearby

Mesoscale Discussions in Alabama, 2008Mesoscale Discussions in Mississippi, 2008Mesoscale Discussions in Tennessee, 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; radar from the NEXRAD Level II archive.