Alert archive / Alabama / Tornado Watches in 2009
Tornado Watch 107
The Storm Prediction Center issued this tornado watch at Apr 2, 2009, 1:33 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2009, 1:33 PM CDT (18:33 UTC)
- Expired
- Apr 2, 2009, 6:05 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 63 counties
Autauga County, AL, Baldwin County, AL, Bibb County, AL, Blount County, AL, Butler County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Colbert County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Cullman County, AL, Dallas County, AL, Escambia 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, Lowndes County, AL, Madison County, AL, Marengo County, AL, Marion County, AL, Marshall County, AL, Mobile County, AL, Monroe 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, Washington County, AL, Wilcox County, AL, Winston County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL, George County, MS, Greene County, MS, Perry County, MS, Stone County, MS, Wayne County, MS, Bedford County, TN, Giles County, TN, Hickman County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Perry County, TN, Rutherford County, TN, Wayne County, TN, Williamson County, TN
The radar
The Birmingham radar (KBMX), 72 km from the middle of the area, began a volume at 18:33 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
- 60%
- One or more EF2 to EF5 tornadoes
- 40%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
52 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 1:42 PM CDT | Severe Thunderstorm Warning | MOB | George, Greene, Perry, Stone | 63 min |
| Apr 2, 1:43 PM CDT | Severe Thunderstorm Warning | HUN | Colbert, Franklin, Lawrence | 32 min |
| Apr 2, 1:53 PM CDT | Severe Thunderstorm Warning | MOB | Greene, Perry, Wayne | 52 min |
| Apr 2, 1:59 PM CDT | Severe Thunderstorm Warning | MOB | Escambia, Okaloosa, Santa Rosa | 46 min |
| Apr 2, 2:06 PM CDT | Severe Thunderstorm Warning | OHX | Hickman, Perry | 24 min |
| Apr 2, 2:07 PM CDT | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale | 23 min |
| Apr 2, 2:17 PM CDT | Severe Thunderstorm Warning | OHX | Dickson, Hickman | 28 min |
| Apr 2, 2:20 PM CDT | Severe Thunderstorm Warning | BMX | Greene, Pickens, Sumter | 40 min |
| Apr 2, 2:21 PM CDT | Severe Thunderstorm Warning | BMX | Lamar, Marion | 39 min |
| Apr 2, 2:25 PM CDT | Tornado Warning | MOB | Escambia, Okaloosa, Santa Rosa | 24 min |
| Apr 2, 2:35 PM CDT | Severe Thunderstorm Warning | OHX | Lawrence | 25 min |
| Apr 2, 2:37 PM CDT | Severe Thunderstorm Warning | OHX | Giles, Lawrence, Maury | 23 min |
| Apr 2, 2:38 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Choctaw, Clarke, Mobile, Monroe, Washington and 1 more | 52 min |
| Apr 2, 2:41 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Mobile | 53 min |
| Apr 2, 2:43 PM CDT | Severe Thunderstorm Warning | MOB | Okaloosa | 17 min |
| Apr 2, 2:46 PM CDT | Severe Thunderstorm Warning | OHX | Maury, Williamson | 29 min |
| Apr 2, 2:53 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Greene, Lamar, Pickens, Sumter, Tuscaloosa | 52 min |
| Apr 2, 2:53 PM CDT | Severe Thunderstorm Warning | HUN | Colbert, Franklin, Lauderdale | 37 min |
| Apr 2, 2:55 PM CDT | Tornado Warning | OHX | Giles, Maury | 35 min |
| Apr 2, 2:57 PM CDT | Severe Thunderstorm Warning | BMX | Greene, Hale, Marengo, Sumter | 33 min |
| Apr 2, 2:57 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Lamar, Marion, Walker, Winston | 48 min |
| Apr 2, 3:08 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 22 min |
| Apr 2, 3:14 PM CDT | Tornado Warning | BMX | Greene, Pickens, Tuscaloosa | 31 min |
| Apr 2, 3:18 PM CDT | Flash Flood Warning | MOB | Escambia, Okaloosa, Santa Rosa | 6 hr |
| Apr 2, 3:28 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Clarke, Conecuh, Escambia, Mobile, Monroe and 1 more | 62 min |
| Apr 2, 3:30 PM CDT | Tornado Warning | OHX | Maury, Williamson | 15 min |
| Apr 2, 3:32 PM CDT | Tornado Warning | BMX | Pickens, Tuscaloosa | 28 min |
| Apr 2, 3:34 PM CDT | Flash Flood Warning | OHX | Wayne | 3 hr |
| Apr 2, 3:36 PM CDT | Flash Flood Warning | OHX | Maury | 3 hr |
| Apr 2, 3:37 PM CDT | Severe Thunderstorm Warning | BMX | Bibb, Greene, Hale, Tuscaloosa | 38 min |
| Apr 2, 3:42 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Jefferson, Marion, Pickens, Tuscaloosa, Walker and 1 more | 48 min |
| Apr 2, 3:46 PM CDT | Severe Thunderstorm Warning | OHX | Davidson, Williamson | 29 min |
| Apr 2, 3:53 PM CDT | Severe Thunderstorm Warning | MOB | Conecuh, Monroe, Wilcox | 37 min |
| Apr 2, 3:53 PM CDT | Flash Flood Warning | OHX | Williamson | 37 min |
| Apr 2, 4:02 PM CDT | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale | 28 min |
| Apr 2, 4:05 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence | 25 min |
| Apr 2, 4:08 PM CDT | Flash Flood Warning | OHX | Davidson, Williamson | 7 hr |
| Apr 2, 4:09 PM CDT | Tornado Warning | HUN | Lauderdale | 9 min |
| Apr 2, 4:14 PM CDT | Severe Thunderstorm Warning | BMX | Bibb, Blount, Jefferson, Shelby, Tuscaloosa, Walker | 46 min |
| Apr 2, 4:18 PM CDT | Severe Thunderstorm Warning | HUN | Limestone, Morgan | 42 min |
| Apr 2, 4:39 PM CDT | Tornado Warning | HUN | Limestone | 22 min |
| Apr 2, 4:42 PM CDT | Severe Thunderstorm Warning | BMX | Blount, Jefferson, Walker | 48 min |
| Apr 2, 4:43 PM CDT | Severe Thunderstorm Warning | OHX | Maury, Williamson | 32 min |
| Apr 2, 4:45 PM CDT | Severe Thunderstorm Warning | HUN | Cullman | 45 min |
| Apr 2, 4:49 PM CDT | Flash Flood Warning | HUN | Limestone | 116 min |
| Apr 2, 4:53 PM CDT | Tornado Warning | HUN | Madison | 37 min |
| Apr 2, 4:58 PM CDT | Severe Thunderstorm Warning | HUN | Limestone, Madison, Morgan | 47 min |
| Apr 2, 4:59 PM CDT | Flash Flood Warning | HUN | Morgan | 2 hr |
| Apr 2, 5:04 PM CDT | Flash Flood Warning | HUN | Madison | 116 min |
| Apr 2, 5:21 PM CDT | Tornado Warning | HUN | Madison, Morgan | 39 min |
| Apr 2, 5:46 PM CDT | Severe Thunderstorm Warning | HUN | Jackson, Madison | 44 min |
| Apr 2, 5:49 PM CDT | Tornado Warning | HUN | Marshall | 26 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
Birmingham, AL (KBMX), launched 12:00Z, 6.6 hours before the alert went out and 70 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
- 1268 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 463 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 3:12 AM CDT | Mesoscale Discussion | SPC | Chambers, Clay, Cleburne, Lee, Randolph, Tallapoosa | 63 min |
| Apr 2, 5:57 AM CDT | Mesoscale Discussion | SPC | Baldwin, Barbour, Bullock, Butler, Coffee, Conecuh and 9 more | 63 min |
| Apr 2, 6:29 AM CDT | Tornado Watch | SPC | Baldwin, Barbour, Bullock, Butler, Choctaw, Clarke and 19 more | 8 hr |
| Apr 2, 10:06 AM CDT | Mesoscale Discussion | SPC | Dale, Geneva, Henry, Houston | 54 min |
| Apr 2, 1:09 PM CDT | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Blount, Butler, Calhoun and 45 more | 66 min |
| Apr 2, 2:00 PM CDT | Tornado Watch | SPC | Coffee, Dale, Geneva, Henry, Houston | 7 hr |
| Apr 2, 3:42 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Butler, Chilton, Coffee and 29 more | 63 min |
| Apr 2, 5:25 PM CDT | Mesoscale Discussion | SPC | Calhoun, Cherokee, Cleburne, DeKalb | 95 min |
| Apr 2, 6:02 PM CDT | Tornado Watch | SPC | Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 38 more | 7 hr |
| Apr 1, 11:52 PM CDT | Mesoscale Discussion | SPC | Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 7 more | 113 min |
| Apr 2, 7:31 AM CDT | Tornado Watch | SPC | Alachua, Baker, Bradford, Clay, Columbia, Duval and 6 more | 6 hr |
| Apr 2, 12:17 PM CDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Clay, Columbia, Dixie and 13 more | 58 min |
| Apr 2, 6:28 PM CDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Clay, Columbia, Duval and 8 more | 92 min |
| Apr 2, 8:01 AM CDT | Mesoscale Discussion | SPC | Adams, Amite, Attala, Bolivar, Carroll, Claiborne and 32 more | 59 min |
| Apr 2, 9:24 AM CDT | Tornado Watch | SPC | Adams, Amite, Attala, Bolivar, Carroll, Choctaw and 49 more | 7 hr |
| Apr 2, 10:53 AM CDT | Tornado Watch | SPC | Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more | 4 hr |
| Apr 2, 11:51 AM CDT | Mesoscale Discussion | SPC | Amite, Attala, Carroll, Choctaw, Claiborne, Clarke and 40 more | 84 min |
| Apr 2, 3:36 PM CDT | Mesoscale Discussion | SPC | Attala, Bolivar, Carroll, Claiborne, Coahoma, Copiah and 20 more | 54 min |
| Apr 2, 3:56 PM CDT | Severe Thunderstorm Watch | SPC | Attala, Bolivar, Carroll, Choctaw, Clay, Coahoma and 21 more | 4 hr |
| Apr 2, 5:36 PM CDT | Mesoscale Discussion | SPC | Alcorn, Attala, Benton, Calhoun, Carroll, Chickasaw and 25 more | 84 min |
| Apr 2, 6:21 PM CDT | Tornado Watch | SPC | Alcorn, Benton, Calhoun, Chickasaw, DeSoto, Itawamba and 9 more | 3 hr |
| Apr 2, 2:04 PM CDT | Mesoscale Discussion | SPC | Cheatham, Davidson, Houston, Macon, Montgomery, Robertson and 4 more | 116 min |
| Apr 2, 2:40 PM CDT | Tornado Watch | SPC | Benton, Cheatham, Davidson, DeKalb, Dickson, Houston and 9 more | 4 hr |
| Apr 2, 4:35 PM CDT | Mesoscale Discussion | SPC | Clay, Jackson, Pickett | 85 min |
Nearby
Tornado Watches in Alabama, 2009Tornado Watches in Tennessee, 2009Tornado Watches in Mississippi, 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.