- Tropical Storm Fiona passes through the northeastern Caribbean Sea.
- Puerto Rico and the Virgin Islands will experience heavy rain and gusty winds.
- If Fiona comes near Puerto Rico and the Dominican Republic, it could become a hurricane.
- It is too early to tell whether this system poses a threat to the US mainland.
Tropical Storm Fiona will bring flood-like rainfall and high winds in the northeastern Caribbean and could grow into a hurricane near Puerto Rico and the Dominican Republic.
What we know about Fiona’s threat to the Caribbean and what the storm means for the continental United States in the future.
Latest situation and forecast
Fiona’s center entered the northeastern Caribbean after passing through Guadeloupe. A tropical storm-like condition will continue in northern Leeward Island Saturday morning.
The storm continues to contend with some unfavorable wind shear and dry air.
Since most of the thunderstorm activity is east of the system due to wind shear, the worst rain and gusts occur in the central Lesser Antilles after the central passage.
On this track, Fiona will be traveling near or just south of the U.S. Virgin Islands and Puerto Rico this weekend, before moving to Hispaniola on Sunday night or Monday. Slightly favorable conditions could lead to some intensification this weekend, and Fiona could develop into a hurricane as it tracks close to Puerto Rico and Hispaniola (Dominican Republic and Haiti).
Uncertainty then rises due to possible interactions with land, but some intensification is expected once Fiona reaches the waters north of Hispaniola.
A hurricane warning has been issued for Puerto Rico. This means that hurricane conditions are possible within the next 48 hours.
Virgin Islands, Puerto Rico, Antigua, Barbuda, St. Kitts, Nevis, Montserrat, Anguilla, Saba, St. Eustatius, St. Martin, Guadeloupe, St. Barthelemy, St. Martin, and parts of the Dominican Republic. Tropical storm conditions are expected in the exclusion zone within 36 hours.
A tropical storm warning has been issued for parts of the Dominican Republic’s southern coast. This means that tropical storm conditions are possible within the next 48 hours.
The area from the Leeward Islands to Puerto Rico, eastern Hispaniola, and the Turks and Caicos Islands could receive a total of 4 to 10 inches of rain from Fiona (locally higher). That heavy rain could cause dangerous flooding and landslides this weekend and early next week, especially in mountainous areas. Up to 16 inches is possible, especially in eastern and southern Puerto Rico.
Moderate storm surges are possible this weekend on the east- and south-facing coasts of Puerto Rico, the Virgin Islands, and Hispaniola. In addition, rip currents and rough waves can occur.
Is Fiona a threat to the US mainland?
The bottom line is that it’s too early to tell if Fiona will ultimately become a threat, so the mainland US will have to monitor projections for now, especially from Florida to the rest of the southeast coast. is.
That’s because Fiona faces the aforementioned obstacles. Wind he may pass through sheer, dry air, and mountainous Caribbean islands such as Hispaniola.
Among the wide range of possibilities are:
– Similar to last week’s Hurricane Earl, it will intensify sooner and will turn north into the central Atlantic farther from the US East Coast.
– Minimal strengthening over the next few days, continuing west to west-northwest, then turning north, much closer to or above the Bahamas, possibly in the southeastern United States later next week.
For now, the National Hurricane Center’s forecast calls for Fiona to gain some strength by early next week. This allows a gradual north turn near Hispaniola and the Turks her Caicos Islands.
However, as is common during hurricane season, this forecast is subject to change. Please check back at weather.com for future updates to this forecast.
Whatever happens, now is a good time to plan ahead before the hurricane hits. Information on hurricane preparedness can be found here.
Details from weather.com:
12 things you may not know about hurricane forecasts
7 Things Florida Newbies Need to Know About Hurricane Season
Lucky for the Florida Peninsula as Hurricane Irma doesn’t last long
The Weather Company’s primary journalistic mission is to report on the latest weather news, the environment, and the importance of science to our lives. This story does not necessarily represent the position of our parent company, IBM.