Hurricane Ian updates: Florida death toll climbs

NASA engineers will decide on Sunday whether to remove the Artemis rocket from the launchpad at the Kennedy Space Center in Cape Canaveral, Florida.

Officials plan to meet at 7 p.m. to look at the latest data and determine how soon or if they need to take Artemis off the launch pad.

The launch of the rocket has already been postponed twice — once in August due to technical glitches and another earlier this month due to a fuel leak.

If the launch is not delayed again, the attempt to launch on Oct. 2 will remain in place.

-ABC News' Gina Sunseri

Ian remains a tropical storm with winds of 50 mph, but the storm system is expected to rapidly intensify on Sunday as it moves over warm waters in the Caribbean Sea, according to the National Hurricane Center.

The seawater currently carries very favorable conditions for strengthening over the coming days, with temperatures between 85 and 90 degrees Fahrenheit -- the perfect temperatures for fueling a powerful storm as it stays over open water.

Ian is expected to strengthen to a hurricane by Sunday night and into a major hurricane later Monday night as it passes by Cuba.

The NHC currently forecasts Ian to strengthen into a major Category 4 hurricane on Tuesday in the Gulf of Mexico as it heads toward Florida.

Ian is expected to make landfall on the west coast or the panhandle of Florida on Wednesday or Thursday.

Some weakening could occur before the storm system makes landfall, possibly dipping below major hurricane status before impacting coastal communities.

A hurricane warning is currently in effect for the western portion of Cuba, where flooding rains and major storm surge are forecast.

-ABC News' Riley Winch