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Isaac is now a hurricane, and he could make the Caribbean happy this week.
Isaac became the fifth hurricane of the season Sunday night, and he blasted 75 mph winds, according to the National Hurricane Center.
Forecasters urged those in the Lesser Antilles to keep an eye on Isaac and say it could have an impact on the islands by Wednesday or Thursday.
It is too early to speculate on the destination of Isaac – and if that could affect the United States.
And the hurricane center pointed out Sunday night that many aspects of the forecast for Isaac are uncertain:
"I must point out that all aspects of the forecast are very uncertain at the moment: the dynamic lane model is nearly 1000 miles on day 5, while the intensity difference is close to 100 kt", said the center. "Although the NHC trajectory and intensity forecasts have not changed much, this should not be interpreted as increased confidence in the forecasts."
However, there is good news: Isaac should begin to weaken by Tuesday as he approaches the Lesser Antilles, but "there is still waiting for that. it reaches or nears the hurricane when it reaches the islands, "said the center.
However, Isaac is a small storm, which makes the forecast of its intensity difficult.
"Isaac is a very small hurricane, which makes the forecasts of intensity particularly delicate because the small storms are likely to change rapidly in intensity," said the hurricane center.
As of 10 pm Sunday, Tropical Storm Isaac was located approximately 1 305 miles east of the Windward Islands and was moving west at 14 mph.
On Sunday night, the forecast models offered two scenarios on Isaac's trail.
Some of the most reliable models keep Isaac on a path to the west over the next five days.
But others show that Isaac moves much more slowly and eventually turns north.
"NHC's predictions have been favorable to the first solution and continue to do so with this view, because I see no reason to drastically change the forecasts at this stage," forecasters said.
The winds of Isaac rose to 75 mph on Sunday night. Its strengthening is expected to continue over the next few days.
Isaac does not have a big window for the intensification, though.
The hurricane center said some forecasting models show wind shear, perhaps partly from Florence, which is beginning to weaken Isaac as it gets closer to the Lesser Antilles.
Isaac is one of three named storms in the Atlantic Sunday.
Florence has become a hurricane and is expected to land along the eastern coast of the United States by Thursday as a major hurricane. From Sunday evening, there were winds of 90 km / h.
Florence becomes a hurricane
And to the east, Hurricane Helene was moving away from the Cabo Verde Islands.
The hurricane center added a new disturbance to watch on Sunday that could reach the Gulf of Mexico in a few days. This disruption has a 30 percent chance of development over the next five days.
Another disturbance occurred in the central Atlantic and had a 40% chance of development.
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