It looks like potentially a long night for some of us, especially in the Western counties of the Tennessee Valley. Anywhere in and near this watch area, be ready to shelter within five minutes if you go under a Tornado Warning polygon.
Small room on the lowest floor of a sturdy house (NOT a mobile home!), near the center of the building, away from any windows. And cover your body in case of debris as best you can, especially the back of your head and neck. This could turn out to be serious business for some folks, and tornadoes are hard to confirm at night sometimes. Take care of yourself and your loved ones.
Make sure if you don't have a weather radio, at least Wireless Emergency Alerts will wake you up on a cell phone. If you have a reliable way to get the warning and a decent safety plan as described above, you'll be fine. But don't get caught in a mobile home, and please don't get caught out driving through any severe weather tonight either. Plan stops along your route, even if it's a 24-hour-hour gas station or truck stop, where if you had to, you could get inside for a few minutes. We don't want anybody getting hurt tonight. And we have had plenty of advance notice that conditions are becoming favorable for severe thunderstorms and even tornadoes. So let's respect the risk and get through this night together, much as families get through the God-awful crud that's been going around this holiday season together. If you've had somebody in your family hacking his or her head off with this stuff, you know it's real. And so is this weather. It's not a huge threat, but we have to respect it. It's a reasonable threat for severe winds or a tornado. Numerous tornado warnings are already in effect in Mississippi.
9:10 PM - We now have a Severe Thunderstorm Warning for Lamar, Pickens, Sumter, Greene, even down to Choctaw Counties with this squall line as it starts to cross the MS/AL state line now. Kevin Laws from the National Weather Service in Birmingham did a great job in writing this warning and emphasizes that considerable damage is possible, even if these all turn out to be damaging straight-line winds. And also threw in a reminder that tornadoes can develop quickly in an environment like this. So in these areas, I would get into that small central room on the lowest floor of a sturdy house or other strong building. Treat it just about like you would a Tornado Warning in this case.
9:29 - Lamar County has now been upgraded to a Tornado Warning.
9:34 - And now Marion and Fayette Counties have been put under Severe Thunderstorm Warnings. Please remember that even these straight-line winds in this squall line have the potential to produce significant property damage and/or serious injury.
TORNADO WARNING MARION COUNTY AL - STARTING NEW POST
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 722
NWS Storm Prediction Center Norman OK
810 PM CST Sat Dec 28 2024
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Northern and Central Alabama
Northeast Mississippi
* Effective this Saturday night and Sunday morning from 810 PM
until 400 AM CST.
* Primary threats include...
A few tornadoes likely with a couple intense tornadoes possible
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...A line of thunderstorms should continue to pose some
threat for a few tornadoes and scattered to numerous damaging winds
as it moves east-northeastward this evening and overnight. Any
sustained supercell ahead of the line could produce a strong
tornado, although severe/damaging winds should eventually tend to
become the main threat overnight.
The tornado watch area is approximately along and 50 statute miles
east and west of a line from 20 miles north northeast of Muscle
Shoals AL to 30 miles southwest of Selma AL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).
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...WW 721...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 26040.
...Gleason
WOUS64 KWNS 290206
WOU2
BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH OUTLINE UPDATE FOR WT 722
NWS STORM PREDICTION CENTER NORMAN OK
810 PM CST SAT DEC 28 2024
TORNADO WATCH 722 IS IN EFFECT UNTIL 400 AM CST FOR THE
FOLLOWING LOCATIONS
ALC001-007-009-021-033-043-047-057-059-063-065-073-075-077-079-
083-085-091-093-103-105-107-115-117-119-121-125-127-133-
291000-
/O.NEW.KWNS.TO.A.0722.241229T0210Z-241229T1000Z/
AL
. ALABAMA COUNTIES INCLUDED ARE
AUTAUGA BIBB BLOUNT
CHILTON COLBERT CULLMAN
DALLAS FAYETTE FRANKLIN
GREENE HALE JEFFERSON
LAMAR LAUDERDALE LAWRENCE
LIMESTONE LOWNDES MARENGO
MARION MORGAN PERRY
PICKENS SHELBY ST. CLAIR
SUMTER TALLADEGA TUSCALOOSA
WALKER WINSTON
MSC013-017-057-081-095-115-117-141-291000-
/O.NEW.KWNS.TO.A.0722.241229T0210Z-241229T1000Z/
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
CALHOUN CHICKASAW ITAWAMBA
LEE MONROE PONTOTOC
PRENTISS TISHOMINGO
ATTN...WFO...BMX...MEG...HUN...
Mesoscale Discussion 2308
NWS Storm Prediction Center Norman OK
0659 PM CST Sat Dec 28 2024
Areas affected...Central/Northern Alabama into extreme southern
Tennessee
Concerning...Severe potential...Tornado Watch likely
Valid 290059Z - 290230Z
Probability of Watch Issuance...80 percent
SUMMARY...Tornado watch will likely be warranted later this evening
from central Alabama, northward, possibly into extreme southern
Tennessee.
DISCUSSION...LLJ continues to strengthen across MS into middle TN
early this evening. Low-level warm advection is intense ahead of the
primary squall line, and this is primarily responsible for scattered
convection that is evolving along the MS/AL border. While the lead
warm-advection storms are likely a bit elevated, surface dew points
have risen into the lower 60s as far north as Jackson TN. With time
lower 60s dew points will surge across the remainder of northern AL.
While surface-based buoyancy will remain a bit weak across this
region, intense shear will contribute to the longevity of upstream
squall line, along with scattered warm advection storms.
New tornado watch is likely warranted downstream.
..Darrow/Gleason.. 12/29/2024
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