As Helene weakens, Tropical Storm Joyce has formed in the Atlantic, as has Hurricane Isaac. Here's what to know about the storms' paths.

The National Hurricane Center is tracking 5 systems, including Helene, Hurricane Isaac and Tropical Storm Joyce.

The National Hurricane Center continued to keeps its focus Friday on what had been Category 4 major Hurricane Helene as it moved inland as a tropical storm, but also was keeping tabs on newly formed Tropical Storm Joyce and Hurricane Isaac in the Atlantic and two more systems with a chance to develop into the season’s next tropical depression or storm.

In Guerrero, the worst-hit state and one of Mexico's poorest, 18 people were killed, according to local media, many due to mudslides that crushed houses. To the south, local media reported three deaths in Oaxaca, and a young boy died in a river to the north in Michoacan state.

Tropical Storm John made landfall near Manzanillo, Mexico, the U.S. National Hurricane Center said on Friday. Tropical storm John was about 90 miles (140 km) southeast of Manzanillo, Mexico, packing maximum sustained winds of 45 miles per hour (75 km per hour),

Severe weather battered parts of Mexico for the fifth consecutive day as Tropical Storm John made landfall on Friday, releasing more rain and catastrophic flash-flooding, forecasters said, though it is expected to weaken as the storm sweeps the country’s southwestern coast for a second time this week.