Axios

Florida and Mississippi have declared states of emergency in the face of Subtropical Storm Alberto as South Florida and the Florida Keys could get up to 10 inches of rain, and Cuba is expected to see 15 inches.

The details, from Axios' Andrew Freedman: The greatest threats from Subtropical storm Alberto include heavy rain, coastal flooding, and high winds. Some areas of Florida, Alabama, Georgia, and Mississippi could see up to a foot of rain through Memorial Day. The difference between a subtropical storm and a tropical storm is negligible in terms of impacts, and Alberto is expected to become a full-fledged tropical storm on Monday. While this comes earlier than hurricane season's start on June 1, it's not expected to be an overly active season.

After watching an area of disturbed weather for several days, the National Hurricane Center has determined that Subtropical Storm Alberto has formed in the Gulf of Mexico. The storm, currently near the Yucatan Peninsula, is forecast to crawl northward throughout the holiday weekend.

The impact: The storm is eventually likely to come ashore somewhere between Louisiana and the Florida Panhandle early next week — possibly as soon as Memorial Day. The storm's biggest threat will not be its winds, but rather, its rains.

The full wrath of Tropical Cyclone Mekunu is moving across the coast of southwest Oman and northeastern Yemen on Friday.

The impact: No storm this strong has hit this area since reliable records began in the 1950s, and it's possible the damage from Mekunu will be billions of dollars. Due to a long-running civil war, Yemen does not have robust disaster response capabilities. Plus, the country is in the midst of one of the world's worst cholera outbreaks, which could be exacerbated by this year's rainy season. Oman, however, has more robust response capabilities, but still may be overwhelmed by this event.