Tropical Storm Katia formed early on Wednesday morning about 105 miles off the coast of Mexico, according to WTKR.
The system joins both Irma and Tropical Storm Jose in the Atlantic, becoming the third named storm swirling over the region this week.
Katia has maximum sustained winds of 40 mph and is currently moving southeast at approximately 2 miles per hour.
It is expected to intensify into a hurricane in a couple of days before it approaches the coast of Veracruz, Mexico, the U.S. National Hurricane Center said on Wednesday.
Both storms pale in comparison to the powerful Hurricane Irma, which is officially one of the strongest Atlantic hurricanes ever recorded.
The Category 5 storm is expected to slam the eastern Caribbean islands with devastating winds, heavy rains and catastrophic storm surges as early as Wednesday night.
SEE: People prepare for Hurricane Irma's impact: