Alert archive / Mississippi / Mesoscale Discussions in 2016
Mesoscale Discussion 1895
The Storm Prediction Center issued this mesoscale discussion at Dec 17, 2016, 11:48 PM CST for 4 states. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Dec 17, 2016, 11:48 PM CST (05:48 UTC)
- Expired
- Dec 18, 2016, 1:15 AM CST
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 67 counties
Colbert County, AL, Franklin County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Marion County, AL, Allen Parish, LA, Avoyelles Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, LaSalle Parish, LA, Madison Parish, LA, Rapides Parish, LA, Richland Parish, LA, Tensas Parish, LA, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Claiborne County, MS, Clay County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Itawamba County, MS, Jefferson County, MS, Lee County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Oktibbeha County, MS, Pontotoc County, MS, Prentiss County, MS, Sharkey County, MS, Tishomingo County, MS, Warren County, MS, Webster County, MS, Yazoo County, MS, Bedford County, TN, Cannon County, TN, Coffee County, TN, DeKalb County, TN, Franklin County, TN, Giles County, TN, Jackson County, TN, Lawrence County, TN, Lincoln County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Putnam County, TN, Rutherford County, TN, Smith County, TN, Trousdale County, TN, Warren County, TN, Williamson County, TN, Wilson County, TN
The radar
The Columbus AFB radar (KGWX), 106 km from the middle of the area, began a volume at 05:48 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, 5.8 hours before the alert went out and 147 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
- 139 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 1187 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 343 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 8:28 PM CST | Mesoscale Discussion | SPC | Colbert, Franklin, Lauderdale, Lawrence, Limestone, Marion | 62 min |
| Dec 17, 8:58 PM CST | Tornado Watch | SPC | Colbert, Franklin, Lauderdale, Lawrence, Limestone | 6 hr |
| Dec 18, 1:03 AM CST | Severe Thunderstorm Watch | SPC | Blount, Cullman, DeKalb, Fayette, Jackson, Lamar and 7 more | 4 hr |
| Dec 18, 2:30 AM CST | Mesoscale Discussion | SPC | Colbert, Lauderdale | 4 hr |
| Dec 18, 3:24 AM CST | Mesoscale Discussion | SPC | Blount, Cullman, DeKalb, Etowah, Jackson, Marshall and 1 more | 66 min |
| Dec 17, 6:44 PM CST | Mesoscale Discussion | SPC | Allen, Beauregard, Bienville, Bossier, Caddo, Caldwell and 19 more | 3 hr |
Nearby
Mesoscale Discussions in Mississippi, 2016Mesoscale Discussions in Tennessee, 2016Mesoscale Discussions in Louisiana, 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.