Tropical Storm Chris was upgraded from a tropical depression to a full storm overnight, as Tropical Depression 3 formed off the coast of North Carolina late on Friday afternoon and strengthened early Sunday morning.
Beryl's max sustained winds have been recorded at 60 miles per hour and is moving to west-northwest at 16 miles per hour.
"Beryl reaches the eastern Caribbean Sea on Monday, but the system may not degenerate into an open trough until it reaches the vicinity of Hispaniola and the central Caribbean Sea", the DDM said.
As of Sunday, Tropical Storm Chris has maximum sustained winds near 45 miles per hour.
Swells generated by Chris are expected to increase and affect portions of the coasts of North Carolina and the mid-Atlantic states into early next week.
Dominica, an island that was leveled by Hurricane Maria and is still facing daunting challenges in wake of the Category 5 storm, is now under a hurricane watch.More news: PM Narendra Modi inaugurates ‘world’s largest mobile factory’ by Samsung in Noida
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The hurricane center also cautioned that because of its small size, Beryl is harder to predict with any certainty.
Beryl is due to reach that zone sometime late Sunday, the hurricane center said, at which point it's likely to weaken into a tropical depression.
When NASA's Aqua satellite passed over the newly strengthened Hurricane Beryl on July 6 at 12:25 a.m. EDT (0425 UTC), the MODIS instrument or Moderate Resolution Imaging Spectroradiometer, analyzed the storm in infrared light.
"In most cases Beryl's impact on Puerto Rico and the Virgin Islands will be like a robust tropical wave and not a hurricane", Miller said.
Your First Alert Weather Team continues to monitor Tropical Storm Chris off the North Carolina coast. Puerto Rico Gov. Ricardo Rossello declared a state of emergency for the island and suspended work for Monday, partly because its electricity grid is particularly vulnerable after Hurricane Maria caused damages to it estimated at $100 billion, the AP reported.
In the Caribbean, a tropical storm warning was up on Guadeloupe and Dominica, while a tropical storm watch was issued for the French Caribbean territories of Martinique, St. Martin and St. Barts as well as St. Maarten, Barbados, Saba and St. Eustatius.