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The season's first tropical depression could form later today or over the weekend in the Gulf of Mexico's Bay of Campeche near Mexico.

As of 2:00 p.m. ET, a well-defined low-pressure area was located about 25 miles northeast of Veracruz, Mexico, according to the National Hurricane Center, which is giving it a 70% chance that the system will become a tropical depression within the next 48 hours.

"Whether a tropical depression forms or not, this disturbance could produce heavy rains, along with life-threatening flash floods and mudslides, over portions of southeastern and eastern Mexico during the next few days," the hurricane center warned in an online bulletin.

The system poses no threat the the USA.

"While conditions are somewhat favorable for development in the low levels of the atmosphere, conditions are hostile for development aloft," reports AccuWeather Meteorologist Rob Miller.

Disruptive winds at middle and upper levels of the atmosphere -- known as wind shear -- can prevent tropical systems from developing or strengthening.

If it becomes a tropical storm -- with sustained winds of 39 mph -- it would be named Arthur, the first named storm of the 2014 Atlantic hurricane season. (Atlantic storms includes all storms that form in the Atlantic Ocean, Caribbean Sea and Gulf of Mexico.)

Two tropical systems, Hurricane Amanda and Tropical Storm Boris, have already formed in the eastern Pacific Ocean.

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