Hurricane Isaias made landfall on the Bahamas' Andros Island late Saturday morning, whipping it and nearby islands with heavy rain and strong winds as the storm headed closer to Florida, which it is poised to menace Saturday night and Sunday.
The storm -- pronounced (ees-ah-EE-as) -- had maximum sustained winds of 80 mph at 11 a.m. ET as it raked Andros, with about 8,000 of the Bahamas' roughly 385,000 residents.
Just to the east, power outages were reported across the Bahamas' New Providence island, including the capital of Nassau, as the storm pushed down trees and power lines, Eyewitness News Bahamas reported.
"It's just been a very rainy day and the winds are beginning to pick up," one of the station's reporters, Matthew Moxey, told CNN from New Providence island.
With last year's devastating Hurricane Dorian still fresh in Bahamians' minds, people in Nassau had lined up outside groceries and building supply stores, making final preparations, Moxey said.
After crossing Andros, the Category 1 hurricane is expected to move near or over Grand Bahama island Saturday. Isaias is then expected to move near Florida's east coast Saturday night through Sunday, the NHC said.
On Thursday, Isaias' exterior slammed Puerto Rico before it went over the Dominican Republic, all as a tropical storm.
A hurricane warning is in effect for northwestern Bahamas as well for parts of Florida: from Boca Raton to the Volusia/Flagler County line. A hurricane warning means that hurricane conditions are expected somewhere within the warning area.
A hurricane watch has been issued for a strip of South Florida, from just north of Miami to south of Boca Raton.
Isaias is expected to produce up to 8 inches of rain in the Bahamas and up to 6 inches in southern and east-central Florida, as well as the Carolinas and the mid-Atlantic states through Tuesday. Northeastern Florida and coastal Georgia are expected to get up to 2 inches of rain this weekend, NHC said.
Storm surges could combine with tides to cause coastal flooding. Water could reach up to 5 feet above ground in the Bahamas, and up to 4 feet above the ground in parts of coastal Florida, NHC said.
Florida, and then up the East Coast
Like many in southeastern Florida this weekend, West Palm Beach resident Benjamin Peterson was at Costco Friday, stocking up on essentials in preparation for the hurricane's arrival.
"Every season you get a little bit nervous, and you always have that chance of whether or not the storm is actually going to come, and if it's going to bring the full force with it," Peterson told CNN affiliate WFLX at Costco Friday.
The forecast track as of Saturday morning has Isaias' center passing within 25 miles of Florida's east coast on Sunday, and moving along it, still as a Category 1 hurricane.
But a landfall in the state can't yet be ruled out, CNN meteorologist Allison Chinchar said.
Parts of South Florida already were getting gusts of 40 mph Saturday morning. Hurricane conditions -- including winds of at least 75 mph -- could reach Florida's east coast Saturday night, NHC said.
After battering the coasts of Florida and Georgia, the storm's center could affect the Carolinas' coast by early Tuesday -- and current forecasts show a landfall over the coastal Carolinas is possible.
The storm then could move along the coasts of the mid-Atlantic and Northeastern states from Tuesday into Wednesday.
The governors of Florida, North Carolina and Virginia have declared states of emergency, allowing officials to move resources and equipment for recovery.
A storm threat during a pandemic
Florida closed some state-supported Covid-19 drive-through and walk-up testing sites on Thursday in anticipation of the storm.
Testing is shut down in Miami and will likely stay that way until Tuesday or Wednesday, Miami Mayor Francis Suarez told CNN Friday.
"That's going to be a gap in information for four or five days," Suarez said.
In Palm Beach County, Mayor Dave Kerner said a zone that primarily has mobile homes will be evacuated. The county will open six shelters Saturday morning at area schools and a recreation center, Kerner said.
Kerner said the shelters would feature coronavirus precautions. Those taking shelter will have their temperatures checked, and will be divided into family units. Masks will be provided as needed and law enforcement will help enforce social distancing, he said.
Thousands of kits with personal protective equipment are being sent to shelters in counties that are in the storm's path, Florida Gov. Ron DeSantis said Saturday.
Power outages could last longer than usual because of the pandemic, Florida Power & Light spokesman Bryan Garner said.
That's partly because restoration teams are taking time and space for health precautions, he said. They're social distancing, working in small groups, sanitizing equipment and going through temperature checks and health screenings, Garner said.
"It may reduce productivity and result in longer restoration times," Garner said.
In the Bahamas, authorities announced that shelters have been set up across the country, with at least 10 shelters with supplies ready in New Providence. The Bahamas Defense Force and personnel from the health ministry have also been activated.
The Bahamas is dealing with a second wave of coronavirus cases. The country's health minister, Renward Wells, said Friday that initial confirmed cases of the second wave were connected to "individuals from Grand Bahamas who traveled from the United States."
Bahamian Prime Minister Hubert Minnis on Thursday announced the easing of a coronavirus lockdown for citizens to better prepare for the arrival of Hurricane Isaias. Hardware stores, pharmacies and supermarkets would be allowed to open.
CNN's Artemis Moshtaghian, Rosa Flores, Sara Weisfeldt, Hollie Silverman, Brandon Miller, Randi Kaye and Sugam Pokharel contributed to this report.