Scott Martin: All eyes here on Hurricane Ida, potential Alabama impacts

HURRICANE IDA: As of the 4 a.m. update from the National Hurricane Center, Ida was moving northwestward across the southeastern Gulf of Mexico with maximum sustained winds at 80 mph. The center was around 510 miles southeast of New Orleans and was moving at 16 mph. The forecast track shows that Ida will continue to the northwest across the Gulf of Mexico while rapidly strengthening, potentially reaching Category 4 strength, with winds up to 140 mph. For now, landfall is expected to occur close to Morgan City, but the impacts of Ida will be felt many miles out from the eye.
Hurricane Warnings are up from Intracoastal City, Louisiana, to the mouth of the Pearl River in Mississippi, including Lake Pontchartrain. Tropical Storm Warnings and Hurricane Watches are up outside of that as far east as the Mississippi-Alabama border and as far west as Cameron, Louisiana.
Storm Surge Warnings are up from just east of Rockefeller Wildlife Refuge in Louisiana to the Mississippi-Alabama border, and for Vermilion Bay, Lake Borgne, Lake Pontchartrain and Lake Maurepas. Extremely life-threatening surge of 10 to 15 feet above ground level is possible within portions of the warned area. Life-threatening rip currents will occur from today through at least Wednesday along the northern Gulf Coast.
Unfortunately, potentially catastrophic wind damage is possible where the core of Ida moves onshore in the Hurricane Warning area starting as early as Sunday morning, including the New Orleans metropolitan area. Actions to protect life and property should be rushed to completion in the warning area, as landfall of the eye is expected to occur at the start of Sunday evening.
ALABAMA IMPACTS: For Alabama, we will start to see those impacts from Ida on Monday and will persist through much of Tuesday. Rainfall total will range from as small as around one-quarter inch for the southeastern parts of the state to as high as 4-6 inches over the northwest and western parts. Some localized amounts may be even higher. There will be potential for flooding in low-lying and poor drainage areas. It will be breezy; wind gusts may reach as high as 40 mph in the western and northwestern parts of the state and in the higher elevations.
A few tropical-type, brief spin-up tornadoes will be possible as well. The Storm Prediction Center has the southwestern quarter of Alabama in a marginal risk for severe storms due to the tornado threat before dawn Monday, and much of the western half of the state throughout the day Monday and before dawn Tuesday.
Just remember that these projected impacts could change with each update to Ida’s forecast track. Any jog to the east with the track means impacts may be greater to Alabama, while any jog to the west may lessen those impacts. That is why it is very important that you have the latest information on Ida. Old information is likely to be bad information.
THIS WEEKEND: Saturday will be your pretty typical late summer day in Alabama, as we’ll have partly cloudy skies with isolated to scattered, mainly afternoon showers and storms. Highs will be in the upper 80s to the lower 90s.
On Sunday, we’ll start to see the outer bands start to move into extreme southwestern Alabama as Ida makes landfall on the Louisiana coast. Scattered to numerous showers and storms will be possible across much of the state, with the best coverage occurring mainly south of a line from Tuscaloosa to Clanton to Troy. Highs will be in the upper 80s to the lower 90s.
THE WORK WEEK AHEAD: Showers and storms will become likely. We’ll be on the wet, active side of Ida as she moves roughly up the Mississippi River. It will be breezy, with gusts up to 40 mph possible in western Alabama, and a few brief spin-up tornadoes are possible as well. Highs will be in the lower 80s to around 90 degrees.
The center of Ida will be just west of Nashville Tuesday afternoon, and we’ll continue to see showers and thunderstorms. A few tornadoes may be possible again for western and northwestern Alabama through the first half of the day, until the center makes it up into Tennessee. It will be a little breezy again and highs will be in the upper 70s to the upper 80s.
We’ll continue to be in rather moist air left over from Ida that will keep the potential for scattered showers and storms at times on Wednesday, but coverage will be more spotty than what we will see Monday and Tuesday. Highs will be in the 80s.
Drier air moves in to finish out the work week, as we’ll have plenty of sunshine and only a very small chance of an isolated shower or two Thursday and Friday. Highs will be in the mid-80s to the lower 90s.
TROPICS: We have Tropical Depression 10 on the board, and it is expected to become Tropical Storm Julian later today. It will move northward and eventually weaken back into a depression. At this point, it will be no threat to the continental U.S.
For more weather news and information from James Spann, Scott Martin and other members of the James Spann team, visit AlabamaWx.