Alert archive / Mississippi / Mesoscale Discussions in 2008

Mesoscale Discussion 34

January 8, 20085 states

The Storm Prediction Center issued this mesoscale discussion at Jan 8, 2008, 4:03 PM CST for 5 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
Jan 8, 2008, 4:03 PM CST (22:03 UTC)
Expired
Jan 8, 2008, 6:00 PM CST
In force
117 min
Issued by
the Storm Prediction Center
All 116 counties

Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Harrison County, IN, Perry County, IN, Spencer County, IN, Warrick County, IN, Allen County, KY, Anderson County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Jefferson County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Simpson County, KY, Spencer County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Alcorn County, MS, Attala County, MS, Benton County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Claiborne County, MS, Clay County, MS, Copiah County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Itawamba County, MS, Jefferson County, MS, Lafayette County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Madison County, MS, Marshall County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Oktibbeha County, MS, Pontotoc County, MS, Prentiss County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Warren County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Hardeman County, TN, Hardin County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Perry County, TN, Robertson County, TN, Stewart County, TN, Sumner County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN

The radar

The Columbus AFB radar (KGWX), 105 km from the middle of the area, began a volume at 22:06 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

Little Rock, AR (KLZK), launched 12:00Z, 10.1 hours before the alert went out and 99 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 2008-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 181 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, Little Rock, AR at 12:00Z on 2008-01-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 466 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
181 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
709 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
466 m²/s²
0-3 km storm-relative helicity
474 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.1

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 8, 5:51 PM CSTMesoscale DiscussionSPCBlount, Colbert, Cullman, Fayette, Franklin, Jackson and 13 more54 min
Jan 7, 6:01 PM CSTTornado WatchSPCCass, Elkhart, Fulton, Kosciusko, LaGrange, LaPorte and 7 more5 hr
Jan 7, 7:03 PM CSTMesoscale DiscussionSPCAllen, Benton, Blackford, Boone, Carroll, Cass and 29 more117 min
Jan 7, 8:22 PM CSTTornado WatchSPCAdams, Allen, Blackford, DeKalb, Grant, Huntington and 5 more3 hr
Jan 8, 12:22 PM CSTMesoscale DiscussionSPCClark, Crawford, Daviess, Dubois, Floyd, Gibson and 16 more83 min
Jan 8, 1:11 PM CSTMesoscale DiscussionSPCCrawford, Gibson, Perry, Posey, Spencer, Vanderburgh and 1 more2 hr
Jan 8, 1:26 PM CSTTornado WatchSPCClark, Crawford, Dubois, Floyd, Gibson, Harrison and 10 more8 hr
Jan 8, 8:34 AM CSTTornado WatchSPCBallard, Calloway, Carlisle, Fulton, Graves, Hickman and 2 more5 hr
Jan 8, 11:27 AM CSTMesoscale DiscussionSPCBallard, Caldwell, Calloway, Carlisle, Crittenden, Fulton and 11 more2 hr
Jan 8, 3:59 PM CSTTornado WatchSPCAttala, Choctaw, Claiborne, Clarke, Clay, Copiah and 18 more3 hr

Nearby

Mesoscale Discussions in Mississippi, 2008Mesoscale Discussions in Kentucky, 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.