Alert archive / Mississippi / Tornado Watches in 2009
Tornado Watch 785
The Storm Prediction Center issued this tornado watch at Oct 30, 2009, 12:22 PM CDT for 21 counties in Alabama; 46 counties in Mississippi. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 30, 2009, 12:22 PM CDT (17:22 UTC)
- Expired
- Oct 30, 2009, 8:00 PM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 67 counties
Choctaw County, AL, Clarke County, AL, Colbert County, AL, Cullman County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Hale County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Marengo County, AL, Marion County, AL, Morgan County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Washington County, AL, Winston County, AL, Alcorn County, MS, Amite County, MS, Attala County, MS, Calhoun County, MS, Chickasaw County, MS, Choctaw County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Greene County, MS, Itawamba County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Lee County, MS, Lincoln County, MS, Lowndes County, MS, Marion County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Perry County, MS, Pike 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, Walthall County, MS, Wayne County, MS, Webster County, MS, Winston County, MS
The radar
The Columbus AFB radar (KGWX), 85 km from the middle of the area, began a volume at 17:23 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
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
42 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 30, 12:30 PM CDT | Tornado Warning | LIX | Amite | 30 min |
| Oct 30, 12:39 PM CDT | Tornado Warning | JAN | Covington, Jefferson Davis, Simpson, Smith | 46 min |
| Oct 30, 12:55 PM CDT | Severe Thunderstorm Warning | MEG | Benton, Tippah, Union | 35 min |
| Oct 30, 1:03 PM CDT | Tornado Warning | JAN | Attala, Choctaw, Leake, Neshoba, Oktibbeha, Winston | 57 min |
| Oct 30, 1:05 PM CDT | Tornado Warning | LIX | Pike | 12 min |
| Oct 30, 1:14 PM CDT | Tornado Warning | LIX | Pike | 31 min |
| Oct 30, 1:15 PM CDT | Severe Thunderstorm Warning | MEG | Pontotoc, Tippah, Union | 30 min |
| Oct 30, 1:33 PM CDT | Severe Thunderstorm Warning | MEG | Chickasaw, Lee, Pontotoc, Union | 27 min |
| Oct 30, 1:44 PM CDT | Tornado Warning | BMX | Pickens | 26 min |
| Oct 30, 1:44 PM CDT | Tornado Warning | JAN | Lawrence, Lincoln | 31 min |
| Oct 30, 1:46 PM CDT | Tornado Warning | BMX | Pickens | 29 min |
| Oct 30, 1:53 PM CDT | Tornado Warning | JAN | Clay, Oktibbeha | 67 min |
| Oct 30, 2:01 PM CDT | Tornado Warning | LIX | Pike, Walthall | 59 min |
| Oct 30, 2:20 PM CDT | Tornado Warning | JAN | Kemper, Neshoba, Newton | 55 min |
| Oct 30, 2:26 PM CDT | Tornado Warning | MEG | Monroe | 39 min |
| Oct 30, 2:27 PM CDT | Tornado Warning | JAN | Jefferson Davis, Lawrence | 40 min |
| Oct 30, 2:29 PM CDT | Tornado Warning | JAN | Kemper, Lauderdale, Neshoba, Newton | 61 min |
| Oct 30, 2:31 PM CDT | Severe Thunderstorm Warning | MEG | Itawamba, Lee, Prentiss, Tishomingo | 43 min |
| Oct 30, 2:36 PM CDT | Tornado Warning | JAN | Noxubee, Winston | 54 min |
| Oct 30, 2:51 PM CDT | Severe Thunderstorm Warning | MEG | Itawamba, Lee, Monroe | 39 min |
| Oct 30, 3:42 PM CDT | Tornado Warning | JAN | Lowndes, Noxubee | 40 min |
| Oct 30, 3:50 PM CDT | Tornado Warning | JAN | Kemper, Lowndes, Noxubee | 55 min |
| Oct 30, 4:02 PM CDT | Tornado Warning | BMX | Lamar, Pickens | 28 min |
| Oct 30, 4:07 PM CDT | Tornado Warning | BMX | Pickens, Sumter | 38 min |
| Oct 30, 4:24 PM CDT | Tornado Warning | BMX | Fayette, Lamar | 36 min |
| Oct 30, 4:25 PM CDT | Tornado Warning | BMX | Fayette, Walker | 31 min |
| Oct 30, 4:29 PM CDT | Tornado Warning | BMX | Pickens | 46 min |
| Oct 30, 4:38 PM CDT | Tornado Warning | BMX | Fayette, Lamar, Pickens | 37 min |
| Oct 30, 4:41 PM CDT | Tornado Warning | BMX | Pickens | 34 min |
| Oct 30, 4:45 PM CDT | Tornado Warning | BMX | Fayette, Lamar, Marion | 45 min |
| Oct 30, 4:55 PM CDT | Tornado Warning | HUN | Franklin | 19 min |
| Oct 30, 4:57 PM CDT | Tornado Warning | BMX | Fayette, Lamar, Marion | 48 min |
| Oct 30, 5:06 PM CDT | Tornado Warning | BMX | Fayette, Lamar, Pickens | 39 min |
| Oct 30, 5:10 PM CDT | Tornado Warning | BMX | Marion, Winston | 35 min |
| Oct 30, 5:34 PM CDT | Tornado Warning | BMX | Marion, Walker, Winston | 41 min |
| Oct 30, 5:37 PM CDT | Tornado Warning | BMX | Fayette, Marion, Walker | 23 min |
| Oct 30, 5:44 PM CDT | Tornado Warning | JAN | Clarke, Jasper | 21 min |
| Oct 30, 5:55 PM CDT | Tornado Warning | BMX | Fayette, Walker, Winston | 50 min |
| Oct 30, 6:07 PM CDT | Tornado Warning | BMX | Winston | 19 min |
| Oct 30, 6:25 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence | 50 min |
| Oct 30, 6:52 PM CDT | Severe Thunderstorm Warning | BMX | Winston | 23 min |
| Oct 30, 6:58 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence, Morgan | 28 min |
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, 5.4 hours before the alert went out and 155 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
- 471 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 595 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 268 m²/s²
- 0-3 km storm-relative helicity
- 311 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 3.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 30, 10:22 AM CDT | Mesoscale Discussion | SPC | Pickens | 83 min |
| Oct 30, 2:11 PM CDT | Mesoscale Discussion | SPC | Choctaw, Clarke, Colbert, Fayette, Franklin, Greene and 14 more | 94 min |
| Oct 30, 4:57 PM CDT | Mesoscale Discussion | SPC | Choctaw, Clarke, Colbert, Fayette, Franklin, Greene and 12 more | 93 min |
| Oct 30, 5:20 PM CDT | Tornado Watch | SPC | Autauga, Bibb, Blount, Butler, Calhoun, Chilton and 29 more | 3 hr |
| Oct 30, 2:03 AM CDT | Mesoscale Discussion | SPC | Adams, Benton, Bolivar, Carroll, Claiborne, Coahoma and 21 more | 57 min |
Nearby
Tornado Watches in Mississippi, 2009Tornado Watches in Alabama, 2009Every tornado watch in 2009
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.