On Sunday, Hurricane Gabrielle developed in the open Atlantic to the southeast of Bermuda, while Tropical Storm Narda appeared far off the Pacific coast of southern Mexico.

The National Hurricane Center, based in Miami, announced that Gabrielle had intensified into a Category 1 hurricane with maximum sustained winds reaching 75 mph. It was located approximately 320 miles southeast of Bermuda and was heading north-northwest at a speed of 10 mph.

According to the center, Gabrielle may escalate into a major hurricane early this week due to anticipated consistent and rapid intensification over the next day or so.

On the current forecast track, Gabrielle was expected to pass east of Bermuda on Monday.

A hurricane hunter aircraft found the storm at hurricane strength and moving on a more north-northwest track.

But the center said a more northerly course was expected Monday.

No coastal watches or warnings are in effect, but meteorologists urged interests in Bermuda to keep close watch.

Large ocean swells kicked up by Gabrielle are impacting Bermuda and are expected to reach the Eastern Seaboard from North Carolina northward into Atlantic Canada over the coming days.

In the Pacific, Narda emerged well offshore of Mexico on Sunday afternoon and posed no threat to land.

The hurricane center said Narda had top sustained winds of about 40 mph and was positioned about 240 miles south-southeast of Zihuatanejo, Mexico, while moving to the northwest at 10 mph.

The center says Narda could become a hurricane while heading further offshore.