Alert archive / Tennessee / Mesoscale Discussions in 2008

Mesoscale Discussion 50

January 10, 20085 states

The Storm Prediction Center issued this mesoscale discussion at Jan 10, 2008, 3:05 PM CST for 5 states. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Jan 10, 2008, 3:05 PM CST (21:05 UTC)
Expired
Jan 10, 2008, 5:00 PM CST
In force
115 min
Issued by
the Storm Prediction Center
All 156 counties

Autauga County, AL, Bibb County, AL, Blount County, AL, Calhoun County, AL, Cherokee County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Colbert County, AL, Coosa County, AL, Cullman County, AL, Dallas County, AL, DeKalb County, AL, Elmore County, AL, Etowah County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Hale County, AL, Jackson County, AL, Jefferson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Lowndes County, AL, Madison County, AL, Marengo County, AL, Marion County, AL, Marshall County, AL, Monroe County, AL, Morgan County, AL, Perry County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Washington County, AL, Wilcox County, AL, Winston County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Floyd County, GA, Polk County, GA, Walker County, GA, Whitfield County, GA, Adair County, KY, Allen County, KY, Barren County, KY, Boyle County, KY, Butler County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Estill County, KY, Garrard County, KY, Green County, KY, Hart County, KY, Jackson County, KY, Jessamine County, KY, Larue County, KY, Laurel County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, McCreary County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Simpson County, KY, Taylor County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Clarke County, MS, Covington County, MS, Forrest County, MS, Greene County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lowndes County, MS, Marion County, MS, Monroe County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Pearl River County, MS, Perry County, MS, Smith County, MS, Wayne County, MS, Bedford County, TN, Bledsoe County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Hickman County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, Meigs County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Northeast Alabama radar (KHTX), 47 km from the middle of the area, began a volume at 21:06 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

Nashville Metro, TN (KBNA), launched 12:00Z, 9.1 hours before the alert went out and 138 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, Nashville Metro, TN at 12:00Z on 2008-01-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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, Nashville Metro, TN at 12:00Z on 2008-01-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 square meters per square second.1939587897Sfc1 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
4 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
170 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
Jan 10, 9:23 AM CSTMesoscale DiscussionSPCBibb, Blount, Colbert, Cullman, Fayette, Franklin and 13 more67 min
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, 3:42 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, 7:52 AM CSTMesoscale DiscussionSPCAllen, Ballard, Barren, Breckinridge, Butler, Caldwell and 30 more113 min
Jan 10, 1:03 PM CSTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bourbon, Boyle and 46 more87 min
Jan 10, 2:19 PM CSTTornado WatchSPCAdair, Allen, Anderson, Barren, Bath, Boyle and 42 more5 hr
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

Nearby

Mesoscale Discussions in Tennessee, 2008Mesoscale Discussions in Alabama, 2008Mesoscale Discussions in Kentucky, 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.