Two more tropical depressions, one in the Atlantic Ocean and one in the Caribbean, have forecasters waiting to see if this year's hurricane season will get its 18th named storm.

Early Saturday, a slow-moving depression was reported to be about 1,000 kilometers west-southwest of the Cape Verde Islands. Its top winds were near 55 kilometers per hour, with some higher gusts.

At the moment, forecasters do not expect it to pose a threat to land.

The other storm was reported 175 kilometers southeast of Cozumel, Mexico, moving toward the west-northwest.

Mexico's government has issued a tropical storm warning for the Yucatan Peninsula, with landfall expected by Sunday.

Already this is the fourth-busiest Atlantic hurricane season since forecasters began keeping records in 1851.

Some information for this report provided by AP.