What was once Tropical Storm Gabrielle has been upgraded to a hurricane, as expected, Sept. 21.

The National Hurricane Center announced that the storm hit hurricane status shortly before 5 p.m. ET. The center added that he most significant threat is hazardous surf and rip currents at the beaches of Bermuda, along the U.S. East coast from North Carolina northward, and Atlantic Canada.

NOAA hurricane hunters indicated that maximum sustained winds from the storm increased to near 75 mph. Forecasters predict steady to rapid intensification is forecast "over the next day or so" and the possibility of Gabrielle becoming a "major hurricane" early this week.

The storm sits about 320 miles southeast of Bermuda and is moving toward the north-northwest at about 10 mph, according to forecasters. The NHC expects the center of Gabrielle to pass east of Bermuda the evening of Sept. 21.

Here are the trackers for Hurricane Gabrielle.