Hurricane Helene live updates: 6 dead, 4 million without power

Mandatory evacuations are in place for some residents of Asheville in western North Carolina as severe flooding from Hurricane Helene hits the state.

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North Carolina faces flooding emergency

WTVD's Tamara Scott has the latest on the storm's impact.

Evacuations were ordered for the Swannanoa River Valley area due to a high risk of flooding from the "catastrophic rain," officials said.

Parts of the state have recorded up to 15 inches of rain, with more expected through Friday. Some areas are expecting as much as 20 inches of rain through the course of the storm. Dangerous landslides are also expected.

Water rescues and flooded homes have been reported in Haywood County, just west of Asheville.

-ABC News’ Max Golembo

About 200 people have been rescued overnight from the rising floodwaters in Pasco County, Florida, just north of Tampa, according to the Pasco Sheriff’s Office.

The water is receding Friday morning and rescue calls have slowed, authorities said.

Hurricane Helene was downgraded to a tropical storm around 100 miles southeast of Atlanta early on Friday, as its sustained wind speed slowed to 70 mph.

Life-threatening winds, flash flooding, rain and storm surge are ongoing through Florida, Georgia, North Carolina and South Carolina.

Helene is expected to slow and weaken as it travels north-northwest through Georgia toward the Tennessee-North Carolina border, the National Hurricane Center said.

Helene is projected to turn post-tropical on Friday afternoon or Friday night, the NHC said.

"However, the fast forward speed will allow strong, damaging winds, especially in gusts, to penetrate well inland across the southeastern United States, including over the higher terrain of the southern Appalachians," the NHC said.

-ABC News' Max Golembo

Members of the Pasco Sheriff’s Office and Pasco County Fire Rescue were working through the night and into the early morning responding to water rescue calls along the US-19 corridor on Florida’s Gulf coast.

As of 3:30 a.m. ET, the Pasco Sheriff's Office said a total of 65 people were rescued, with additional efforts ongoing.

Emergency services received more than 100 calls for assistance due to flooding, the Pasco Sheriff's Office wrote on Facebook.

-ABC News’ Ahmad Hemingway