Alert archive / Mississippi / Mesoscale Discussions in 2013
Mesoscale Discussion 89
The Storm Prediction Center issued this mesoscale discussion at Jan 30, 2013, 3:03 AM CST for Concordia Parish, Tensas Parish, Louisiana; 47 counties in Mississippi; 22 counties in Tennessee. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- Jan 30, 2013, 3:03 AM CST (09:03 UTC)
- Expired
- Jan 30, 2013, 4:00 AM CST
- In force
- 57 min
- Issued by
- the Storm Prediction Center
All 71 counties
Concordia Parish, LA, Tensas Parish, LA, Adams County, MS, 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, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Itawamba County, MS, Jefferson County, MS, Jefferson Davis County, MS, Kemper County, MS, Lafayette County, MS, Lawrence County, MS, Leake County, MS, Lee County, MS, Lincoln 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, 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, Cheatham County, TN, Chester County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Hardin County, TN, Henderson County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lawrence County, TN, Lewis 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, Williamson County, TN
The radar
The Columbus AFB radar (KGWX), 89 km from the middle of the area, began a volume at 09:06 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
Jackson, MS (KJAN), launched 00:00Z, 9.1 hours before the alert went out and 159 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.
- Mixed-layer CAPE
- 63 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 375 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 29, 7:31 PM CST | Mesoscale Discussion | SPC | Madison, Tensas | 119 min |
| Jan 29, 8:11 PM CST | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne and 17 more | 94 min |
| Jan 29, 9:49 PM CST | Mesoscale Discussion | SPC | Caldwell, Catahoula, East Carroll, Franklin, LaSalle, Madison and 5 more | 116 min |
| Jan 30, 4:27 AM CST | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 17 more | 93 min |
| Jan 29, 10:07 PM CST | Tornado Watch | SPC | Adams, Alcorn, Attala, Benton, Calhoun, Carroll and 37 more | 6 hr |
| Jan 30, 3:45 AM CST | Tornado Watch | SPC | Attala, Choctaw, Clarke, Clay, Copiah, Covington and 23 more | 4 hr |
| Jan 30, 5:01 AM CST | Mesoscale Discussion | SPC | George, Greene, Perry, Stone | 29 min |
| Jan 30, 5:15 AM CST | Tornado Watch | SPC | George, Greene, Perry, Stone, Wayne | 7 hr |
| Jan 30, 7:43 AM CST | Mesoscale Discussion | SPC | Clarke, Forrest, George, Greene, Perry, Stone and 1 more | 62 min |
| Jan 30, 1:31 AM CST | Mesoscale Discussion | SPC | Bedford, Cannon, Clay, Coffee, DeKalb, Fentress and 20 more | 29 min |
| Jan 30, 1:46 AM CST | Tornado Watch | SPC | Bedford, Cannon, Clay, Coffee, Cumberland, DeKalb and 19 more | 8 hr |
| Jan 30, 4:51 AM CST | Tornado Watch | SPC | Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more | 7 hr |
| Jan 30, 6:38 AM CST | Mesoscale Discussion | SPC | Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more | 97 min |
Nearby
Mesoscale Discussions in Mississippi, 2013Mesoscale Discussions in Tennessee, 2013Mesoscale Discussions in Louisiana, 2013Every mesoscale discussion in 2013
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.