Storm tracker: See path of Hurricane John as it heads toward southern Mexico coast

Approaching with maximum sustained winds of around 105 mph, Hurricane John is forecast to bring severe weather to the southern Mexico coast, including life-threatening flash flooding.

Dangerous winds and storm surge are also expected from the system, which according to the National Hurricane Center was located about 50 miles south of Punta Maldonado Monday afternoon. The system intensified from a tropical storm to a category 2 hurricane.

Between 10 and 20 inches of rain are forecast for areas along and near the Oaxaca coast to southeast Guerrero through Thursday with isolated totals near 30 inches expected.

"This heavy rainfall will likely cause significant and possibly catastrophic, life-threatening flash flooding and mudslides to the Mexican States of Chiapas, Oaxaca and southeast Guerrero, particularly in areas near the coast," the center reported.

Another storm could become Hurricane Helene

John's arrival comes as another brewing storm in the Caribbean Sea, categorized as a "potential cyclone," will soon reach landfall along the Gulf of Mexico with maximum sustained winds of 115 mph. The soon-to-be Category 3 storm named Helene has already warranted tropical storm watches along the Florida Keys as it slowly heads north.

Hurricane John path

Hurricane John spaghetti models

Contributing: Doyle Rice and Minnah Arshad