Alert archive / Mississippi / Mesoscale Discussions in 2008

Mesoscale Discussion 169

February 5, 20087 states

The Storm Prediction Center issued this mesoscale discussion at Feb 5, 2008, 8:07 PM CST for 7 states. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Feb 5, 2008, 8:07 PM CST (02:07 UTC)
Expired
Feb 5, 2008, 9:30 PM CST
In force
83 min
Issued by
the Storm Prediction Center
All 95 counties

Arkansas County, AR, Ashley County, AR, Chicot County, AR, Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Desha County, AR, Drew County, AR, Greene County, AR, Lee County, AR, Lincoln County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, St. Francis County, AR, Woodruff County, AR, Alexander County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Union County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, East Carroll Parish, LA, Morehouse Parish, LA, West Carroll Parish, LA, Butler County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Scott County, MO, Stoddard County, MO, Alcorn County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Lafayette County, MS, Leflore County, MS, Madison County, MS, Marshall County, MS, Montgomery County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Washington County, MS, Webster County, MS, Yalobusha County, MS, Yazoo County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 5 km from the middle of the area, began a volume at 02:08 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 00:00Z, 2.1 hours before the alert went out and 57 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 00:00Z on 2008-02-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1569 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 00:00Z on 2008-02-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 309 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
1569 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
309 m²/s²
0-3 km storm-relative helicity
365 m²/s²
Significant tornado parameter
3.5
Supercell composite
12.1

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
Feb 6, 6:07 AM CSTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 31 more6 hr
Feb 6, 11:32 AM CSTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Kendall and 5 more6 hr
Feb 5, 6:15 PM CSTMesoscale DiscussionSPCAllen, Anderson, Barren, Boone, Boyle, Bracken and 49 more90 min
Feb 5, 7:08 PM CSTTornado WatchSPCAdair, Allen, Anderson, Barren, Boone, Bourbon and 53 more6 hr
Feb 5, 9:19 PM CSTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bath, Bell and 99 more86 min
Feb 5, 11:41 PM CSTTornado WatchSPCAdair, Allen, Barren, Bath, Bourbon, Boyd and 44 more5 hr
Feb 6, 1:31 AM CSTSevere Thunderstorm WatchSPCBell, Floyd, Harlan, Knott, Leslie, Letcher and 3 more3 hr
Feb 6, 1:48 AM CSTMesoscale DiscussionSPCBath, Bell, Boyd, Breathitt, Carter, Clay and 37 more87 min
Feb 6, 3:49 AM CSTMesoscale DiscussionSPCLetcher86 min
Feb 6, 7:49 AM CSTMesoscale DiscussionSPCPike116 min
Feb 6, 10:54 AM CSTMesoscale DiscussionSPCAdair, Anderson, Barren, Bath, Boone, Bourbon and 77 more96 min
Feb 5, 10:01 PM CSTTornado WatchSPCCatahoula, Concordia, Franklin, Madison, Tensas8 hr
Feb 6, 1:02 AM CSTMesoscale DiscussionSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 18 more58 min
Feb 6, 1:23 AM CSTTornado WatchSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 16 more6 hr
Feb 6, 4:27 AM CSTMesoscale DiscussionSPCJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard2 hr
Feb 6, 2:41 AM CSTMesoscale DiscussionSPCClarke, Clay, Jasper, Kemper, Lauderdale, Lawrence and 13 more2 hr
Feb 6, 12:30 AM CSTMesoscale DiscussionSPCAdair, Andrew, Atchison, Buchanan, Caldwell, Carroll and 22 more6 hr
Feb 5, 6:59 PM CSTMesoscale DiscussionSPCCheatham, Davidson, Dickson, Giles, Hickman, Houston and 12 more91 min
Feb 5, 7:19 PM CSTTornado WatchSPCBenton, Cheatham, Davidson, Dickson, Giles, Hickman and 17 more6 hr
Feb 5, 9:39 PM CSTMesoscale DiscussionSPCBedford, Benton, Cannon, Cheatham, Coffee, Davidson and 20 more96 min
Feb 5, 11:59 PM CSTTornado WatchSPCCampbell, Morgan, Scott4 hr
Feb 6, 4:06 AM CSTTornado WatchSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Cannon and 31 more6 hr
Feb 6, 6:10 AM CSTMesoscale DiscussionSPCBradley, Hamilton, McMinn, Meigs, Polk, Rhea2 hr

Nearby

Mesoscale Discussions in Mississippi, 2008Mesoscale Discussions in Tennessee, 2008Mesoscale Discussions in Arkansas, 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.