Alert archive / Alabama / Tornado Watches in 2007
Tornado Watch 745
The Storm Prediction Center issued this tornado watch at Dec 28, 2007, 10:44 AM CST for 42 counties in Alabama; 15 parishes in Louisiana; 14 counties in Mississippi. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 28, 2007, 10:44 AM CST (16:44 UTC)
- Expired
- Dec 28, 2007, 5:32 PM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 71 counties
Autauga County, AL, Baldwin County, AL, Barbour County, AL, Bibb County, AL, Blount County, AL, Bullock County, AL, Butler County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Conecuh County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Escambia County, AL, Etowah County, AL, Hale County, AL, Jefferson County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tallapoosa County, AL, Washington County, AL, Wilcox County, AL, Ascension Parish, LA, Assumption Parish, LA, Jefferson Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Terrebonne Parish, LA, Washington Parish, LA, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Jones County, MS, Lamar County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 150 km from the middle of the area, began a volume at 16:44 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
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 28, 10:53 AM CST | Severe Thunderstorm Warning | MOB | Baldwin | 37 min |
| Dec 28, 11:10 AM CST | Severe Thunderstorm Warning | MOB | Conecuh, Covington, Escambia | 50 min |
| Dec 28, 11:16 AM CST | Severe Thunderstorm Warning | MOB | Conecuh, Escambia, Monroe | 44 min |
| Dec 28, 11:42 AM CST | Tornado Warning | LIX | Plaquemines | 33 min |
| Dec 28, 11:51 AM CST | Tornado Warning | LIX | Jackson | 24 min |
| Dec 28, 11:55 AM CST | Severe Thunderstorm Warning | MOB | Conecuh, Escambia, Monroe | 50 min |
| Dec 28, 12:04 PM CST | Severe Thunderstorm Warning | MOB | Baldwin, Mobile | 41 min |
| Dec 28, 12:25 PM CST | Severe Thunderstorm Warning | MOB | Covington, Escambia | 50 min |
| Dec 28, 1:34 PM CST | Severe Thunderstorm Warning | BMX | Chilton, Coosa | 41 min |
| Dec 28, 1:54 PM CST | Tornado Warning | BMX | Bibb, Perry | 22 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, 4.7 hours before the alert went out and 161 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 463 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 361 m²/s²
- 0-3 km storm-relative helicity
- 429 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 28, 2:13 AM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Butler, Chilton, Choctaw, Clarke and 14 more | 92 min |
| Dec 28, 12:17 PM CST | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Bullock, Butler, Calhoun and 30 more | 118 min |
| Dec 28, 3:07 PM CST | Mesoscale Discussion | SPC | Autauga, Bullock, Butler, Calhoun, Chambers, Chilton and 22 more | 83 min |
| Dec 28, 5:27 AM CST | Mesoscale Discussion | SPC | Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 6 more | 93 min |
Nearby
Tornado Watches in Alabama, 2007Tornado Watches in Louisiana, 2007Tornado Watches in Mississippi, 2007Every tornado watch in 2007
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.