NOAA / NESDIS / STAR GOES – East
Tropical Storm Isaias brings torrential rain, strong winds and frequent lightning strikes to Puerto Rico on Thursday morning. Isaiah is expected to travel through the Dominican Republic before reaching Florida this weekend.
The storm “is causing life-threatening flash floods and strong winds over Puerto Rico,” said the San Juan National Weather Service office. According to the office, the effects of the storm range from fallen trees and power lines to landslides.
8:00 AST JUL 30: Mediation consultancy Temporary warning no. 8A: Isaiah, causing life-threatening flash floods and high winds over Puerto Rico. | Isaiah causing life-threatening floods and strong winds over Puerto Rico. #prwx #usviwx pic.twitter.com/Tf5Q9pTggy
– NWS San Juan (@ NWSSanJuan) July 30, 2020
Isaias will drop from 4 to 8 inches of rain in Puerto Rico, the Dominican Republic and northern Haiti, according to the NWS, with some areas receiving up to 10 inches.
The first winds with tropical storms could arrive in Miami on Friday night, the meteorological service said.
“Heavy rains associated with Isaias could hit South Florida on Saturday morning,” the agency said Thursday morning. “This rain could result in isolated flash and urban floods, especially in low-lying and poorly drained areas.”
Isaiah is now blowing in tropical rainforests up to 310 miles, a sign of rapid growth since Wednesday, when he became the ninth name of the storm during the Atlantic season. The NWS categorizes tropical storm winds ranging from 39 to 73 mph (permanently) at surface level.
National Meteorological Service
The maximum duration of the storm winds is 60 km / h, with higher gusts. To be considered a hurricane, Isaiah would have to reach a speed of at least 74 km / h. Forecasters say that while the system will weaken as it passes through the Dominican Republic today, Isaias is likely to strengthen on Friday and Saturday.
Isaias has launched tropical storm warnings for several islands in the Caribbean, from Puerto Rico and the US Virgin Islands to the Turks and Caicos and parts of the Bahamas.
The system steamed mostly in the west – northwest – but at the beginning of Thursday it headed in a sharper direction to the northwest. It is now expected to be a skirt on the Atlantic coast of Florida and passing near West Palm Beach and Port St. Lucie.
The current route does not require Isaiah to make a potential landfall on the American mainland until he looks at the north coast of North Carolina – which means that heavy rains can cause dangerous flooding for low-lying areas along the southeast coast of the United States.
Concerns about the impact of the storm on Florida have led officials to suspend coronavirus testing at state facilities for several days, from Friday to at least Tuesday.