Looks like the 13th named storm of the 2008 season will form today in the Gulf of Campeche. But the little cyclone has little chance to develop into more than a really bad rain storm - as much as 6 inches of rain -  for southeastern Mexico.

Forecasters at the National Hurricane Center say the storm will likely move west onto Mexican shores late today or tomorrow, becoming one of the shortest-lived tropical storms of the season. Now only a tropical depression, it will become Tropical Storm Marco if its top sustained winds increase to 39 mph before it goes ashore and weakens.

UPDATE: At 4 p.m. the National Hurricane Center upgraded this storm. It is now tropical Storm Marco. Earlier post resumes below.

The storm at last check was located about 100 miles east of the coastal city of Veracruz. It was moving toward the west-northwest at at 10 mph, with top sustained winds of 35 mph. Forecasters said some strtengthening is expected, and it is likely to become a tropical storm.

Here is the latest advisory. Here is the forecast storm track. And here is the view from space.