By Zachary Fagenson

MIAMI (Reuters) – Heavy rains from Hurricane Isaias could hit Florida late Friday night before the powerful storm moves up the East Coast into early next week, the U.S. National Hurricane Center (NHC) warned, prompting the closure of COVID-19 testing sites.

The hurricane, packing maximum sustained winds of 75 miles (120.7 km) per hour, is currently lashing the southeastern part of the Bahamas and the Turks and Caicos Islands, the Miami-based forecaster posted on its Twitter feed on Friday.

“Heavy rains associated with Isaias may begin to affect south and east-Central Florida beginning late Friday night, and the eastern Carolinas by early next week, potentially resulting in isolated flash and urban flooding, especially in low-lying and poorly drained areas” the NHC said on its website.

Miami-Dade County officials closed drive-through and walk-up testing sites for COVID-19. Public beaches, parks, marinas, and golf courses were also set to close on Friday as Isaias strengthened to a Category 1 hurricane and forecasters predicted it would reach Category 2.

Broward County Mayor Dale V.C. Holness had on Thursday also announced testing sites would close, with plans to reopen on Wednesday morning.

As of Friday morning the storm was predicted to most impact Florida’s central, eastern region before moving north.

At full capacity Florida had 162 test sites in all but two of the state’s 67 counties. Some counties will continue testing through their individual health departments.

“We have thousands of tests that will not be conducted until we get these test sites up and running again,” Miami-Dade County Mayor Carlos Gimenez said in a virtual news conference on Friday morning.

(Reporting by Nathan Layne in Wilton, Connecticut; Editing by Nick Zieminski and Jonathan Oatis)