Alert archive / Alabama / Tornado Watches in 2024
Tornado Watch 721
The Storm Prediction Center issued this tornado watch at Dec 28, 2024, 6:34 PM CST for 12 counties in Alabama; 11 parishes in Louisiana; 9 counties in Mississippi. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 28, 2024, 6:34 PM CST (00:34 UTC)
- Expired
- Dec 29, 2024, 4:00 AM CST
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 70 kt
All 32 counties
Baldwin County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL, Assumption Parish, LA, Jefferson Parish, LA, Lafourche 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, Terrebonne Parish, LA, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Pearl River County, MS, Perry County, MS, Stone County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 29 km from the middle of the area, began a volume at 00:39 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
- 80%
- One or more EF2 to EF5 tornadoes
- 50%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 50%
- 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
- 80%
Warnings issued inside it
35 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 28, 6:51 PM CST | Severe Thunderstorm Warning | MOB | Mobile | 39 min |
| Dec 28, 7:05 PM CST | Tornado Warning | MOB | Mobile | 24 min |
| Dec 28, 7:17 PM CST | Severe Thunderstorm Warning | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Saint James and 1 more | 43 min |
| Dec 28, 7:30 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint Tammany, Tangipahoa, Washington | 45 min |
| Dec 28, 7:42 PM CST | Severe Thunderstorm Warning | MOB | Baldwin | 48 min |
| Dec 28, 7:53 PM CST | Tornado Warning | LIX | Pearl River, Walthall | 17 min |
| Dec 28, 8:34 PM CST | Tornado Warning | LIX | Saint Tammany | 29 min |
| Dec 28, 8:36 PM CST | Severe Thunderstorm Warning | MOB | Greene, Perry, Wayne | 54 min |
| Dec 28, 8:48 PM CST | Flash Flood Warning | LIX | Saint Charles, Saint John the Baptist | 2 hr |
| Dec 28, 9:03 PM CST | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles | 3 hr |
| Dec 28, 9:03 PM CST | Tornado Warning | MOB | Wayne | 27 min |
| Dec 28, 9:08 PM CST | Severe Thunderstorm Warning | MOB | Choctaw | 67 min |
| Dec 28, 9:24 PM CST | Severe Thunderstorm Warning | MOB | Choctaw, Washington | 66 min |
| Dec 28, 9:36 PM CST | Tornado Warning | MOB | Choctaw, Washington | 24 min |
| Dec 28, 10:11 PM CST | Severe Thunderstorm Warning | MOB | Mobile | 49 min |
| Dec 28, 10:13 PM CST | Tornado Warning | LIX | Harrison, Jackson | 15 min |
| Dec 28, 10:19 PM CST | Severe Thunderstorm Warning | MOB | Choctaw, Clarke, Monroe, Washington, Wilcox | 41 min |
| Dec 28, 10:25 PM CST | Tornado Warning | MOB | Conecuh, Monroe | 25 min |
| Dec 28, 10:28 PM CST | Severe Thunderstorm Warning | MOB | Baldwin, Clarke, Mobile, Monroe, Washington | 62 min |
| Dec 28, 10:29 PM CST | Tornado Warning | MOB | Mobile | 31 min |
| Dec 28, 10:52 PM CST | Tornado Warning | MOB | Baldwin, Mobile | 23 min |
| Dec 28, 10:56 PM CST | Severe Thunderstorm Warning | MOB | Butler, Conecuh, Monroe | 49 min |
| Dec 28, 10:57 PM CST | Severe Thunderstorm Warning | MOB | Clarke, Conecuh, Monroe, Washington, Wilcox | 63 min |
| Dec 28, 11:12 PM CST | Tornado Warning | MOB | Butler, Conecuh | 33 min |
| Dec 28, 11:36 PM CST | Severe Thunderstorm Warning | MOB | Mobile | 39 min |
| Dec 28, 11:37 PM CST | Tornado Warning | MOB | Butler | 38 min |
| Dec 28, 11:42 PM CST | Tornado Warning | MOB | Mobile | 33 min |
| Dec 28, 11:48 PM CST | Severe Thunderstorm Warning | MOB | Butler, Conecuh, Covington, Monroe, Wilcox | 57 min |
| Dec 28, 11:56 PM CST | Tornado Warning | MOB | Butler, Conecuh, Monroe, Wilcox | 21 min |
| Dec 29, 12:04 AM CST | Severe Thunderstorm Warning | MOB | Conecuh, Escambia | 41 min |
| Dec 29, 12:13 AM CST | Severe Thunderstorm Warning | MOB | Baldwin | 62 min |
| Dec 29, 12:27 AM CST | Tornado Warning | MOB | Baldwin | 33 min |
| Dec 29, 12:30 AM CST | Severe Thunderstorm Warning | MOB | Butler, Conecuh, Covington, Crenshaw, Escambia | 60 min |
| Dec 29, 12:45 AM CST | Severe Thunderstorm Warning | MOB | Conecuh, Covington, Escambia | 60 min |
| Dec 29, 1:13 AM CST | Severe Thunderstorm Warning | MOB | Covington | 62 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 0.6 hours before the alert went out and 172 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
- 1026 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 474 m²/s²
- 0-3 km storm-relative helicity
- 513 m²/s²
- Significant tornado parameter
- 2.9
- Supercell composite
- 19.4
The text
As transmitted.
891
WWUS20 KWNS 290031
SEL1
SPC WW 290031
ALZ000-FLZ000-LAZ000-MSZ000-CWZ000-290800-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 721
NWS Storm Prediction Center Norman OK
630 PM CST Sat Dec 28 2024
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern Alabama
The Western Florida Panhandle
Southeast Louisiana
Southern Mississippi
Coastal Waters
* Effective this Saturday night and Sunday morning from 630 PM
until 200 AM CST.
* Primary threats include...
Several tornadoes likely with a couple intense tornadoes
possible
Scattered damaging winds likely with isolated significant gusts
to 80 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Thunderstorms will continue to pose a threat for tornadoes
and severe/damaging winds this evening and overnight. The most
intense winds may reach 70-80 mph within the developing line of
thunderstorms. A strong tornado also appears possible with any
sustained supercell that can be maintained ahead of the line.
The tornado watch area is approximately along and 70 statute miles
east and west of a line from 40 miles north northwest of Evergreen
AL to 70 miles south of Slidell LA. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 720...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 26040.
...GleasonSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 28, 6:59 PM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Chilton, Colbert, Coosa and 21 more | 91 min |
| Dec 28, 7:39 PM CST | Mesoscale Discussion | SPC | Baldwin, Escambia, Mobile, Washington | 66 min |
| Dec 28, 8:09 PM CST | Tornado Watch | SPC | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 44 more | 7 hr |
| Dec 28, 9:43 PM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Chilton, Colbert, Cullman and 21 more | 92 min |
| Dec 28, 10:08 PM CST | Mesoscale Discussion | SPC | Baldwin, Butler, Clarke, Conecuh, Crenshaw, Escambia and 3 more | 97 min |
| Dec 28, 11:34 PM CST | Mesoscale Discussion | SPC | Autauga, Baldwin, Barbour, Bullock, Butler, Calhoun and 27 more | 116 min |
| Dec 29, 12:54 AM CST | Tornado Watch | SPC | Coffee, Dale, Geneva, Henry, Houston | 7 hr |
| Dec 29, 1:21 AM CST | Mesoscale Discussion | SPC | Barbour, Bullock, Chambers, Lee, Macon, Russell and 1 more | 54 min |
| Dec 29, 3:06 AM CST | Mesoscale Discussion | SPC | Henry, Houston | 84 min |
| Dec 28, 6:00 PM CST | Mesoscale Discussion | SPC | Acadia, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia and 21 more | 60 min |
| Dec 28, 6:04 PM CST | Mesoscale Discussion | SPC | Attala, Calhoun, Carroll, Chickasaw, Choctaw, Claiborne and 22 more | 86 min |
Nearby
Tornado Watches in Alabama, 2024Tornado Watches in Louisiana, 2024Tornado Watches in Mississippi, 2024Every tornado watch in 2024
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.