FORT LAUDERDALE, Fla. — Forecasters expected the remnants of Fred to return to tropical storm status in the Gulf of Mexico on Sunday as parts of the Caribbean were gearing up for impacts from Tropical Storm Grace.

Fred was forecast to move across the Gulf before reaching the coast Monday night or Tuesday morning, according to the U.S. National Hurricane Center. Forecasters said people from Alabama to the central Florida Panhandle should monitor the system's progress.

A tropical storm watch was issued from the Alabama/Florida border to Ochlockonee, Florida. Fred's maximum sustained winds stood at 40 mph (65 kph) Sunday morning.

Anticipating Fred, Florida Gov. Ron DeSantis declared a state of emergency for the state's Panhandle region. And Alabama Gov. Kay Ivey issued a statement Saturday saying her administration was monitoring the weather and "will be ready to act from the state level if needed."

Fred's remnants were located early Sunday about 390 miles (630 kilometers) south-southeast of Pensacola, Florida, and moving north-northwest at 8 mph (13 kph).

Fred had been downgraded to a tropical wave on Saturday. Tropical waves can contain winds and heavy rain, but do not circulate around a center point or an "eye" like a tropical storm or hurricane.

Meanwhile, Tropical Storm Grace was 55 miles (90 kilometers) southwest of St. Croix and 100 miles (160 kilometers) southeast of San Juan, Puerto Rico on Sunday morning. Forecasters said heavy rainfall from the system would fall over parts of the Lesser and Greater Antilles over the next few days.

Grace had maximum sustained winds around 40 mph (65 kph). The storm was moving west-northwest at 16 mph (26 kph).

Both Grace and Fred, regardless of their storm status, posed a heavy rain and flood threat, forecasters said.

Rainfall totals around 3 to 6 inches (7.5 to 15 centimeters) were forecast from Grace for the Leeward Islands, Virgin Islands and Puerto Rico, through Tuesday.

Fred was forecast to bring 4 to 8 inches (10 to 20 centimeters) to the Big Bend of Florida and the Panhandle from Sunday night into Tuesday.

A tropical storm earlier in the week, Fred had weakened to a depression by its spin over Haiti and the Dominican Republic, where it knocked out power to some 400,000 customers and caused flooding that forced officials to shut part of the country's aqueduct system, interrupting water service for hundreds of thousands of people. Local officials reported hundreds of people were evacuated and some buildings were damaged.