Alert archive / Mississippi / Mesoscale Discussions in 2016

Mesoscale Discussion 315

March 31, 201628 counties in Alabama; 35 counties in Mississippi; 4 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2016, 6:52 PM CDT for 28 counties in Alabama; 35 counties in Mississippi; 4 counties in Tennessee. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Mar 31, 2016, 6:52 PM CDT (23:52 UTC)
Expired
Mar 31, 2016, 7:45 PM CDT
In force
53 min
Issued by
the Storm Prediction Center
All 67 counties

Bibb County, AL, Blount County, AL, Choctaw County, AL, Colbert County, AL, Cullman County, AL, Dallas County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Hale 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, Morgan County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Wilcox County, AL, Winston County, AL, Alcorn County, MS, Calhoun County, MS, Chickasaw County, MS, Choctaw County, MS, Clarke County, MS, Clay County, MS, Grenada County, MS, Itawamba County, MS, Jasper County, MS, Kemper County, MS, Lafayette County, MS, Lauderdale County, MS, Leake County, MS, Lee County, MS, Lowndes County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pontotoc County, MS, Prentiss County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Tallahatchie County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Franklin County, TN, Giles County, TN, Lincoln County, TN, Moore County, TN

The radar

The Columbus AFB radar (KGWX), 42 km from the middle of the area, began a volume at 23:55 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 nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.9 hours before the alert went out and 142 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, Birmingham, AL at 12:00Z on 2016-03-31Temperature 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, Birmingham, AL at 12:00Z on 2016-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 441 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1040 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
441 m²/s²
0-3 km storm-relative helicity
538 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 31, 7:47 AM CDTMesoscale DiscussionSPCWashington58 min
Mar 31, 8:37 AM CDTMesoscale DiscussionSPCBaldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more53 min
Mar 31, 8:43 AM CDTTornado WatchSPCBaldwin, Clarke, Conecuh, Covington, Escambia, Mobile and 2 more5 hr
Mar 31, 11:29 AM CDTMesoscale DiscussionSPCBaldwin, Butler, Coffee, Conecuh, Covington, Crenshaw and 5 more2 hr
Mar 31, 1:32 PM CDTMesoscale DiscussionSPCBaldwin, Covington, Escambia, Geneva58 min
Mar 31, 4:47 PM CDTMesoscale DiscussionSPCBibb, Blount, Chilton, Choctaw, Clarke, Colbert and 19 more58 min
Mar 31, 5:58 PM CDTTornado WatchSPCAutauga, Bibb, Blount, Chilton, Choctaw, Clarke and 33 more7 hr
Mar 30, 8:39 PM CDTMesoscale DiscussionSPCBolivar, Issaquena, Sharkey, Washington96 min
Mar 30, 10:00 PM CDTTornado WatchSPCAdams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 18 more6 hr
Mar 30, 11:30 PM CDTMesoscale DiscussionSPCAdams, Bolivar, Claiborne, Humphreys, Issaquena, Jefferson and 4 more60 min
Mar 31, 3:04 AM CDTMesoscale DiscussionSPCAmite, Clarke, Copiah, Covington, Forrest, Franklin and 19 more86 min
Mar 31, 3:20 AM CDTTornado WatchSPCAmite, Covington, Forrest, Jasper, Jefferson Davis, Jones and 10 more6 hr
Mar 31, 10:26 AM CDTMesoscale DiscussionSPCCoahoma, DeSoto, Tate, Tunica3 hr
Mar 31, 1:30 PM CDTMesoscale DiscussionSPCAdams, Attala, Bolivar, Calhoun, Carroll, Chickasaw and 30 more2 hr
Mar 31, 2:35 PM CDTTornado WatchSPCAdams, Alcorn, Attala, Benton, Bolivar, Calhoun and 60 more7 hr
Mar 31, 3:30 PM CDTMesoscale DiscussionSPCAmite, Covington, Forrest, Franklin, George, Greene and 13 more2 hr
Mar 31, 10:58 AM CDTSevere Thunderstorm WatchSPCBenton, Carroll, Chester, Crockett, Dyer, Fayette and 12 more5 hr
Mar 31, 2:14 PM CDTMesoscale DiscussionSPCBenton, Carroll, Cheatham, Chester, Crockett, Decatur and 23 more91 min
Mar 31, 3:48 PM CDTMesoscale DiscussionSPCCheatham, Davidson, Dickson, Giles, Hickman, Lawrence and 8 more87 min
Mar 31, 3:59 PM CDTSevere Thunderstorm WatchSPCBedford, Cannon, Cheatham, Clay, Davidson, DeKalb and 20 more5 hr
Mar 31, 5:49 PM CDTMesoscale DiscussionSPCClay, DeKalb, Fentress, Jackson, Macon, Overton and 7 more56 min

Nearby

Mesoscale Discussions in Mississippi, 2016Mesoscale Discussions in Alabama, 2016Mesoscale Discussions in Tennessee, 2016Every mesoscale discussion in 2016

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.