Alert archive / Mississippi / Tornado Watches in 2010
Tornado Watch 773
The Storm Prediction Center issued this tornado watch at Dec 31, 2010, 3:58 PM CST for 7 counties in Arkansas; 9 parishes in Louisiana; 69 counties in Mississippi. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 31, 2010, 3:58 PM CST (21:58 UTC)
- Expired
- Dec 31, 2010, 11:00 PM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 85 counties
Ashley County, AR, Chicot County, AR, Crittenden County, AR, Cross County, AR, Lee County, AR, Phillips County, AR, St. Francis County, AR, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Alcorn County, MS, Attala County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Coahoma County, MS, Copiah County, MS, Covington County, MS, DeSoto County, MS, Forrest County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Itawamba County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lafayette County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion 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, Quitman County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 69 km from the middle of the area, began a volume at 22:01 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 31, 4:03 PM CST | Tornado Warning | JAN | Copiah | 27 min |
| Dec 31, 4:09 PM CST | Tornado Warning | JAN | Hinds, Warren, Yazoo | 26 min |
| Dec 31, 4:10 PM CST | Flash Flood Warning | JAN | Claiborne, Warren | 2 hr |
| Dec 31, 4:12 PM CST | Severe Thunderstorm Warning | JAN | Hinds, Rankin | 63 min |
| Dec 31, 4:15 PM CST | Tornado Warning | JAN | Claiborne, Jefferson | 30 min |
| Dec 31, 4:37 PM CST | Tornado Warning | JAN | Claiborne, Copiah | 23 min |
| Dec 31, 4:44 PM CST | Tornado Warning | JAN | Hinds, Rankin | 46 min |
| Dec 31, 4:53 PM CST | Tornado Warning | MEG | Lee | 37 min |
| Dec 31, 4:59 PM CST | Tornado Warning | JAN | Copiah | 31 min |
| Dec 31, 5:12 PM CST | Severe Thunderstorm Warning | MEG | Crittenden, Cross, Poinsett, St. Francis | 48 min |
| Dec 31, 5:12 PM CST | Tornado Warning | JAN | Copiah, Hinds, Rankin, Simpson | 33 min |
| Dec 31, 5:15 PM CST | Tornado Warning | JAN | Leake, Madison, Rankin, Scott | 60 min |
| Dec 31, 5:21 PM CST | Severe Thunderstorm Warning | MEG | Crittenden, Lee, St. Francis | 39 min |
| Dec 31, 5:29 PM CST | Flash Flood Warning | JAN | Copiah, Hinds, Rankin, Simpson | 2 hr |
| Dec 31, 5:32 PM CST | Severe Thunderstorm Warning | MEG | DeSoto, Tate | 43 min |
| Dec 31, 5:36 PM CST | Tornado Warning | JAN | Rankin, Scott, Simpson, Smith | 39 min |
| Dec 31, 5:42 PM CST | Flash Flood Warning | MEG | Crittenden, Cross, Lee, St. Francis | 2 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 10.0 hours before the alert went out and 61 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
- 100 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 580 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 343 m²/s²
- 0-3 km storm-relative helicity
- 523 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 30, 8:52 PM CST | Mesoscale Discussion | SPC | Crawford, Franklin, Hempstead, Howard, Little River, Logan and 8 more | 113 min |
| Dec 31, 12:44 AM CST | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Madison, Marion, Washington | 61 min |
| Dec 31, 1:03 AM CST | Tornado Watch | SPC | Benton, Carroll, Crawford, Madison, Washington | 7 hr |
| Dec 31, 3:27 AM CST | Mesoscale Discussion | SPC | Benton, Carroll | 2 hr |
| Dec 31, 4:56 AM CST | Mesoscale Discussion | SPC | Arkansas, Clay, Cleburne, Cleveland, Craighead, Cross and 25 more | 2 hr |
| Dec 31, 5:45 AM CST | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more | 2 hr |
| Dec 31, 7:29 AM CST | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Clark, Cleburne and 31 more | 8 hr |
| Dec 31, 10:36 AM CST | Mesoscale Discussion | SPC | Columbia, Hempstead, Lafayette, Miller, Nevada | 114 min |
| Dec 31, 11:04 AM CST | Mesoscale Discussion | SPC | Clay, Craighead, Greene | 56 min |
| Dec 31, 11:42 AM CST | Tornado Watch | SPC | Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more | 7 hr |
| Dec 31, 1:34 PM CST | Tornado Watch | SPC | Ashley, Chicot | 6 hr |
| Dec 31, 5:35 PM CST | Mesoscale Discussion | SPC | Arkansas, Crittenden, Desha, Lee, Mississippi, Phillips and 1 more | 115 min |
| Dec 31, 9:42 AM CST | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Livingston, Orleans and 8 more | 2 hr |
| Dec 31, 11:39 AM CST | Tornado Watch | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 16 more | 7 hr |
| Dec 31, 12:44 PM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Caldwell and 10 more | 2 hr |
| Dec 31, 2:58 PM CST | Mesoscale Discussion | SPC | East Baton Rouge, East Feliciana, Saint Helena, Tangipahoa, Washington, West Baton Rouge and 1 more | 92 min |
Nearby
Tornado Watches in Mississippi, 2010Tornado Watches in Louisiana, 2010Tornado Watches in Arkansas, 2010Every tornado watch in 2010
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.