Alert archive / Mississippi / Mesoscale Discussions in 2014
Mesoscale Discussion 1874
The Storm Prediction Center issued this mesoscale discussion at Oct 13, 2014, 2:22 PM CDT for 24 counties in Alabama; 38 counties in Mississippi; 9 counties in Tennessee. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- Oct 13, 2014, 2:22 PM CDT (19:22 UTC)
- Expired
- Oct 13, 2014, 4:15 PM CDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
All 71 counties
Bibb County, AL, Blount County, AL, Chilton County, AL, Colbert County, AL, Cullman 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, Marion County, AL, Morgan County, AL, Perry County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Alcorn County, MS, Attala County, MS, Benton County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Itawamba County, MS, Kemper County, MS, Lafayette County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Marshall County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Rankin County, MS, Scott County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS, Chester County, TN, Fayette County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Lawrence County, TN, Madison County, TN, McNairy County, TN, Wayne County, TN
The radar
The Columbus AFB radar (KGWX), 50 km from the middle of the area, began a volume at 19:25 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
Birmingham, AL (KBMX), launched 12:00Z, 7.4 hours before the alert went out and 180 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
- 8 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Oct 13, 12:13 PM CDT | Mesoscale Discussion | SPC | Barbour, Bullock, Butler, Coffee, Conecuh, Covington and 10 more | 2 hr |
| Oct 13, 3:37 PM CDT | Tornado Watch | SPC | Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 33 more | 8 hr |
| Oct 13, 4:46 PM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Clarke, Coffee, Conecuh, Covington and 10 more | 89 min |
| Oct 13, 5:27 PM CDT | Mesoscale Discussion | SPC | Colbert, Franklin, Lamar, Lauderdale, Marion | 63 min |
| Oct 12, 8:04 PM CDT | Mesoscale Discussion | SPC | Benton, Bolivar, Carroll, Coahoma, DeSoto, Grenada and 17 more | 86 min |
| Oct 12, 11:46 PM CDT | Mesoscale Discussion | SPC | Calhoun, Carroll, Chickasaw, Clay, Grenada, Itawamba and 10 more | 89 min |
| Oct 13, 6:34 AM CDT | Mesoscale Discussion | SPC | Bolivar, Carroll, Coahoma, DeSoto, Grenada, Humphreys and 14 more | 86 min |
| Oct 13, 7:08 AM CDT | Tornado Watch | SPC | Adams, Bolivar, Claiborne, Coahoma, DeSoto, Humphreys and 12 more | 7 hr |
| Oct 13, 10:20 AM CDT | Mesoscale Discussion | SPC | Adams, Bolivar, Claiborne, Coahoma, DeSoto, Humphreys and 12 more | 115 min |
| Oct 13, 11:52 AM CDT | Mesoscale Discussion | SPC | Alcorn, Attala, Benton, Bolivar, Calhoun, Carroll and 45 more | 113 min |
| Oct 13, 12:57 PM CDT | Tornado Watch | SPC | Adams, Alcorn, Attala, Benton, Bolivar, Calhoun and 63 more | 7 hr |
| Oct 13, 1:39 PM CDT | Tornado Watch | SPC | Amite, George, Greene, Hancock, Harrison, Jackson and 7 more | 8 hr |
| Oct 13, 5:45 PM CDT | Mesoscale Discussion | SPC | George, Hancock, Harrison, Pearl River, Stone | 90 min |
Nearby
Mesoscale Discussions in Mississippi, 2014Mesoscale Discussions in Alabama, 2014Mesoscale Discussions in Tennessee, 2014Every mesoscale discussion in 2014
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.