Millions sit in areas under hurricane warnings or watches
The National Weather Service says more than 5.4 million people live in areas now under hurricane warnings or watches on the U.S. East Coast.
Another 4 million people are under a tropical storm watch. Assorted bad weather advisories stretched from Florida to Maine on Tuesday evening.
Those facing the most serious threat are in the Carolinas, as Category 4 Hurricane Florence barrels toward the coast, with an expected landfall Friday.
The National Hurricane Center in Miami said Tuesday that a hurricane warning had been issued from South Santee River, South Carolina, to Duck, North Carolina, and the Albemarle and Pamlico Sounds.
A Tropical Storm Watch has been issued from north of the North Carolina-Virginia border to Cape Charles Light, Virginia, and for the Chesapeake Bay south of New Point Comfort.
WATCH: Time-lapse video of a Hurricane Hunter flight going into Hurricane Florence Monday.
Time-lapse video of a #NOAA WP-3D Hurricane Hunter (#NOAA42) flight into Hurricane #Florence on Sept. 10, 2018. Get the latest on the storm at https://t.co/MlZk25kG0d. Credit: Nick Underwood/NOAA pic.twitter.com/FQ3RJMKVUU— NOAA Aircraft Operations Center (@NOAA_HurrHunter) September 11, 2018