Alberto, with maximum sustained winds of 40 miles per hour, is moving east at 2 miles per hour near the Yucatan Peninsula and is forecast to begin moving north Friday night.
The weather service said on Friday morning that confidence continued to increase that a "significant" rain event will affect the northern Gulf Coast this weekend. Alberto would mark the first named storm of the 2018 Atlantic season.
The storms' names come from six lists that are recycled, so this year's was previously used in 2012.
Central Florida continues to have a high chance of rain going into next week.
The 4 p.m. advisory's forecast track brings projects Alberto to make landfall around the Mississippi-Alabama state line on Monday evening as a strong tropical storm.
And Alberto is likely headed toward the northern Gulf Coast, where tropical storm watches could go up as soon as today.
The center of Alberto may hit land somewhere between Louisiana and the Florida Panhandle late Monday, but its bands of heavy rain will spread all across the Florida peninsula and into the Southeast.
Conditions above the Gulf will become more favorable for some development through the weekend as this low moves slowly north-northwest toward the north-central Gulf Coast. For Alberto to be considered a "tropical" storm, relatively warm air must be contained within its center.
Flooding is possible in Miami-Dade and Monroe counties after weeks of rain that in some locations pushed total rainfall to more than two or three times the usual May amounts.
Those winds will also kick up surf that could cause rip currents along the entire Gulf of Mexico shoreline over the holiday weekend. Southern Alabama and MS and the western Florida panhandle could see as much as 1 foot.
Severe storms on Thursday raged from Minnesota to Georgia, creating flooding and damaging trees and homes. Isolated tornadoes are possible.
No evidence of 'spy' in Trump camp, Democrats say after intel brief
Trump has branded his claim " spygate ", and said it could prove a bigger political scandal than Watergate. He said it would be illegal and a disgrace if reports of spying on his campaign were true.
Move over 'yanny-laurel' debate, the 'brain storm-green needle' is here
Sarah Huckerbee Sanders implies the answer is probably whatever CNN says it isn't. The white house staff having a little bit of fun there.
Will Nikki Bella Get Back Together With John Cena?
In the clip, Nikki is seen trying on wedding dresses and tearfully telling Cena, "I'm just starting to feel so suffocated". When asked to predict her future with her fellow WWE star, the athlete said, "I have hope".