The National Hurricane Center in Miami says tropical storm Miriam, which was last spotted off the Mexican coast in in the Pacific Ocean, officially strengthened to a Category 2 hurricane early Monday.

The most recent update from the NHC indicates that Hurricane Miriam was centered about 415 miles south-southwest of the southern tip of Baja California with sustained winds of 105 miles per hour and gusts up to 125 mph.

“Miriam is now a hurricane and strengthening rapidly … Miriam is moving toward the northwest at near 12 mph … 19 km/h. This general motion with a reduction in forward speed is expected during the next couple of days,” the center said in a release.

Despite the estimated increases in strength, forecasters said there were no coastal watches or warnings in effect for Miriam.

According to the NHC, the hurricane will make landfall by Friday, at which time the storm’s winds will likely have slowed to anywhere between 39 mph and 74 mph. At those anticipated speeds, it would mean that the system would have been downgraded from hurricane strength to become a tropical storm yet again.

At the same time, tropical storm Nadine, which is located in the Atlantic, has been upgraded into a tropical storm again after losing much of its strength while visiting the Azores just last week.

Along with information about Miriam, the NHC’s 8 a.m. update indicated that Tropical Storm Nadine was about 455 miles south of the Azores with maximum sustained winds of 55 mph.

In addition, the center of Tropical Storm Nadine was located near latitude 31.4 north, longitude 26.9 west, moving west-northwest at 7 mph.

Little change is expected in the next 48 hours.