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NEW: Storm's center is about 70 miles from Savannah, Georgia

Death toll in Florida is four

CNN  — 

Florida struggled with the rising water, rain and strong winds as meteorologists said the storm surge had been measured at more than 4 feet in some areas.

Meteorologists said storm surge was measured at more than 4 feet in some areas.

“We are seeing impacts right now from St. Augustine to Jacksonville Beach. Unfortunately, this is going to continue through the night,” Gov. Rick Scott said.

The storm, which is blamed for four deaths in Florida, sparked flash-flood concerns. The National Weather Service issued a warning for parts of Nassau County, north of Jacksonville.

“The combination of a dangerous storm surge, the tide and large and destructive waves will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline,” the National Hurricane Center said.

Live updates on Hurricane Matthew

Special concern surrounded Jacksonville’s St. Johns River, which could be overwhelmed by water pushed into it by the storm. The hurricane center said a tide gauge reported storm surge of 4.28 feet.

After killing hundreds in Haiti and other Caribbean nations, Matthew’s frightening power led to the deaths of four people in Florida. The list included a woman in her 60s in Volusia County, hit by a falling tree, and an 82-year-old man and a woman in St. Lucie County, officials said. The latter two had medical emergencies and responders were unable to reach them in time because of hazardous weather.

A woman in northeast Florida died after a tree fell on her camper trailer, the Putnam County Sheriff’s Office said.

The Category 2 hurricane, while losing some of its wind speed, left more than 1 million people without power in Florida as it spent the day plowing north just off the state’s east coast. Late Friday, Matthew was hovering off the coast of Georgia and headed toward South Carolina, where officials issued warnings about the possibility of treacherous storm surge and up to 15 inches of rain.

Matthew is expected to arrive near or over the shores of South Carolina by Saturday and over to North Carolina by Saturday evening.

Winds were already blustery in Hilton Head, South Carolina, with one gust measured at 63 mph.

It’s not as if Matthew – with winds of 105 mph – won’t cause further damage with its powerful winds.

What Florida looks like now

“Just because the center of circulation is offshore doesn’t mean you can’t be the center of action (along the coast),” National Hurricane Center Director Rick Knabb said. “It’s going to get a lot worse before it (has) a chance of getting better.”

Here’s what you need to know:

• As of 11 p.m. ET, Matthew’s center was over the Atlantic, about 70 miles south-southeast of Savannah, Georgia, the National Hurricane Center said. Hurricane-force winds extended outward up to 60 miles from that center. It was moving north at 12 mph.

• A total of 1.1 million customers in Florida were without power.

• The National Weather Service warned that some places hit by Matthew could be uninhabitable for “weeks or months.”

• The storm has killed at least 300 people in three Caribbean countries. The majority died in Haiti, said Civil Protection Service spokesman Joseph Edgard Celestin.

Reports from the storm’s path

Nick Lomasney walks on a flooded street in St Augustine, Florida.

Mandatory evacuations in South Carolina

As northeastern Florida braced for impact, coastal communities in Georgia, South Carolina and North Carolina also were on notice. The storm’s center could be near or over the coasts of Georgia and South Carolina on Saturday, the hurricane center said.

Georgia:

• Glynn County officials wrote on Facebook that “Conditions have deteriorated to a point that persons remaining in (the area near Brunswick) are advised to shelter in place for the remainder of the storm.”

• Maj. Tommy Tillman of the Chatham County Sheriff’s Office said the road to Tybee Island is closed.

• In Savannah, Mayor Eddie DeLoach warned those who stay that they’d be on their own.

• Gov. Nathan Deal has ordered evacuations for all counties east of Interstate 95. Deal has activated 1,000 National Guard troops.

Impact Your World: How to help

South Carolina

Cars packed highways in South Carolina, where officials gave mandatory evacuation orders for several counties.

• Gov. Nikki Haley warned residents who didn’t evacuate to go to a shelter. A major storm surge of 8 feet or more is approaching low-lying areas in the state, including Charleston.

• Although 310,000 people have evacuated the area, Haley says that’s not enough. Officials in some areas are going door to door, urging people to leave. Police in Pawleys Island asked residents who decided to stay in spite of the evacuation orders to sign a waiver and list their next of kin, according to CNN affiliate WBTW.

Are we prepared for a major hurricane?

Cheryl Quinn said she and her husband were fine a year ago when Charleston endured a brush with a big storm.

North Carolina

Gov. Pat McCrory declared a state of emergency for the state’s 100 counties. So far, though, no government official in the state has urged residents to evacuate.

Hurricane Matthew from Space_1
See Hurricane Matthew churn from space
00:45 - Source: CNN

Officials are concerned eastern North Carolina areas that were recently flooded will see more rain from Matthew.

CNN’s Derek Van Dam, Eliott McLaughlin, Dave Hennen, Sheena Jones, Max Blau, Holly Yan, Stephanie Elam, Catherine E. Shoichet, Rolando Zenteno, Keith Allen, Shawn Nottingham, Alexander Leininger, Chandrika Narayan, Tony Marco, Deborah Bloom, Devon M. Sayers, Nick Valencia, Sara Sidner, Jason Morris and Rosa Flores contributed to this report.