TAMPA, Fla. (WFLA) — As two named storms swirl around in the Atlantic, forecasters are tracking three more systems, including a wave that could become a tropical depression and reach the Gulf of Mexico soon.

After wreaking havoc across the Caribbean, Fiona, the first major hurricane of the season, is heading north-northeastward toward Canada, while Tropical Storm Gaston, the other named storm, hangs a few hundred miles off the coast of the Azores.

Gulf Coast forecasters are keeping a close eye on Invest 98L. The disturbance has a high 70% chance of becoming a tropical depression or storm over the next two days.

Here’s what to know.

Hurricane Fiona

The hurricane center said Fiona has remained large and powerful as she moves north-northeastward a few hundred miles off the coast of Bermuda. Forecasters issued hurricane and tropical storm watches for portions of Atlantic Canada

At 11 a.m. Thursday, Fiona was centered about 410 miles southwest of Bermuda with maximum sustained winds of 130 mph, making it a Category 4 hurricane. The storm was moving north-northeast at 15 mph with hurricane-force winds extending outward up to 70 miles from the storm’s center, the NHC said.

Fiona is forecast to pick up speed as it moves north-northeastward toward Bermuda, and will pass just west of the island Thursday night. Little change in strength is expected through Thursday night. It should near Nova Scotia by Friday and move into the Gulf of St. Lawrence on Saturday. It will still be producing hurricane-force winds this weekend after it becomes post-tropical, the center predicted.

Fiona could dump 1 to 5 inches of rain on parts of Bermuda, Nova Scotia, Prince Edward Island, western Newfoundland, Eastern Quebec and Eastern New Brunswick.

Swells from the storm are affecting the southeastern United States coast, the Turks and
Caicos Islands, the Bahamas, and Bermuda, and will continue to spread across the western Atlantic toward the mid-Atlantic and northeast coasts of the United States. The swells could cause cause life-threatening surf and rip current conditions.

A Hurricane Warning is in effect for:

  • Bermuda

A Hurricane Watch is in effect for:

  • Nova Scotia from Hubbards to Brule
  • Prince Edward Island
  • Isle-de-la-Madeleine
  • Newfoundland from Parson’s Pond to Port-Aux-Basques

A Tropical Storm Watch is in effect for:

  • St. Andrews New Brunswick to west of Hubbards Nova Scotia
  • West of Brule Nova Scotia to Cap Madeleine Quebec
  • Anticosti Island
  • Johan Beetz Bay Quebec to north of Parson’s Pond Newfoundland
  • West Bay Labrador to Hare Bay Newfoundland
  • St. Lawrence to east of Port-Aux-Basques Newfoundland

Invest 98L

A disturbance dubbed Invest 98L  has a 70% chance of developing into a tropical depression sometime in the next two days, and a 90% chance of developing over the next five days, the NHC said.

The disturbance was over the far southeastern Caribbean at 8 a.m. Thursday morning. It is forecast to move west-northwestward across the eastern Caribbean and should be over the central Caribbean this weekend.

Forecasters say the Windward Islands will see heavy rain and gusty winds on Thursday morning, and those conditions will likely spread to parts of Venezuela, Colombia and the ABC island chain over the next couple days.

Forecast models show a depression forming south of Jamaica over the weekend and moving into the Gulf of Mexico by the middle of next week.

Storm Team 8 Meteorologist Rebecca Barry predicts there will be a system in the Gulf by the middle of next week, but said it was too soon to tell where it will make landfall.

“Forecast models typically perform poorly when the system’s not formed yet,” Barry explained. “When that center forms to the south of Jamaica, we’ll get much better and much more accurate long-range forecasts.”

It could grow stronger if it winds up between Mexico and Cuba.

“We know interaction with land can weaken tropical systems and sometimes change their path, so that’s an area that remains a question in the forecast – how will it survive the passage if that’s the path it takes?” Barry said.

“We do expect it to develop this weekend. And there’s nothing really standing in its way,” she added. “We talk about moisture, sea surface temperatures and shear as big factors to inhibit systems from developing and this system has no problem with those.”

Tropical Storm Gaston

The hurricane center said Gaston has maintained its strength as it churns about 315 miles west-northwest of Faial Island, Azores. At 11 a.m., it had maximum sustained winds of 65 mph, and was moving east-northeast at 21 mph with tropical-storm-force winds extending outward up to 60 miles from the storm’s center.

Gaston is expected to turn to the east Thursday night before it slows down and starts heading south. It will likely be near the coast of the Azores on Friday.

Swells from Gaston are expected to affect the Azores Thursday and may cause  life-threatening surf and rip current conditions, the NHC said.

The storm is expected to weaken gradually over the next few days.

Other areas to watch

The hurricane center is also monitoring a tropical wave located several hundred miles west-southwest of the Cabo Verde Islands. It has a low 30% chance of becoming a tropical depression or storm over the next five days.

There is another tropical wave that’s set to move off the west cost of Africa. It has a 60% chance of becoming a tropical depression or storm over the next five days.

Tracking the Tropics streams at 2 p.m. ET every Wednesday during hurricane season. For the latest updates, check out our Tracking the Tropics website.