The National Hurricane Center has issued advisories for two tropical storms that have strengthened in the last few days.
Tropical Storm Dorian picked up some strength and speed overnight as it moves across the Atlantic Ocean. For most of Wednesday, the storm had maximum wind speeds of about 50 mph, but by Thursday speeds had risen to 60 mph. The storm is still far from land.
Meanwhile, Tropical Storm Flossie formed in the eastern Pacific Ocean early Thursday, with maximum winds of about 40 mph, as it moves away from the west coast of Mexico, and travels toward Hawaii.
Officials first classified Dorian as a "Tropical Depression Four" early on Wednesday, meaning it had maximum winds below 38 mph. But it grew quickly and was reclassified the same day and became the fourth tropical storm of the season in the Atlantic.
Dorian is expected to continue to move west-northwest through the weekend, The Weather Channel reported. Though The Weather Channel reported that it is too soon to tell if the storm will reach the East Coast, Alex Sosnowski, a senior meteorologist at AccuWeather.com, reported that it may approach the Southeast U.S. by late next week.
Dorian may bring tropical storm conditions, such as strong winds and rain, to the Leeward Islands this weekend, Sosnowski reported. The Leeward Islands are in the West Indies, just east of Puerto Rico. By Tuesday, the wind speeds may reach 65 mph and the storm may approach parts of the Dominican Republic, according to a Weather Channel projection.
Still, the storm must reach sustained wind speeds of 74 mph before it can be classified as a hurricane.
Dan Kottlowski, a hurricane expert at AccuWeather.com, said that may be a challenge later this week, as the storm will cross cooler waters, which "may cause the system to plateau or even weaken."
Tropical Storm Flossie is expected to slowly strengthen over the next few days as it moves west-northwest over warm Pacific waters toward Hawaii. The storm is currently more than 1,000 miles from the southern tip of Baja California and could reach Hawaii by Tuesday.
The Weather Channel projects that Flossie's maximum wind speeds may increase to about 60 mph by late Friday, but should decrease from there, reaching a low of 35 mph on Tuesday morning when it reaches Hawaii.
At that point, however, it may weaken to a tropical rainstorm, according to AccuWeather.com Senior Meteorologist Kristina Pydynowski.
"That does not mean that Flossie will pass unnoticed across Hawaii," Pydynowski reported. "Enhanced shower activity will spread from east to west across the islands Monday night through Wednesday, threatening to put a damper on outdoor activities."