Super storm Hurricane Sandy continues to make a statement as it enters New York, leaving thousands of people in seven states with no power.

According to CNN, more than 765,000 residents in the U.S. are left without power, with New York and New Jersey being most affected.

NBC News reported that utility companies in New York reported that tens of thousands of customers were without power on Monday. They also warned that millions could be left without electricity for days, after Sandy hits.

A mandatory evacuation was issued to more than 375,000 people in the low-lying parts of New York City, as the storm lashed the city with furious winds, blinding rain and flooding.

The regions entire transit system was ordered to shut down, Sunday, as the storm crept in.

New York City Mayor Michael Bloomberg told residents at a news briefing Sunday, "if you don't evacuate, you're not just putting your own life in danger - you are also endangering the lives of our first responders who may have to come in and rescue you."

"Don't be fooled, don't look out the window and think it doesn't look so bad," New York Gov. Andrew Cuomo said Monday.

"The worst is still coming. Irene levels are currently being seen in the region right now, These forecasts for this surge are really extraordinary," Cuomo said.

"They are talking about surges we've never seen before."

Sandy arrived at New Jersey at 4 p.m. on Monday with strong winds and flooding, shutting down rail and road travel. More than 1 million people were given mandatory evacuation orders as police went door to door in coastal towns.

Thousands were already left without power.

"Staying on the barrier island for 36 hours is stupid. Don't be stupid; get out. Go to higher, safer ground," Chris Christie, New Jersey governor said on Sunday.

"Be prepared to stay in your homes for an extended period of time ... perhaps without power or water."

Sandy is approaching New Jersey and Atlantic City at 28 mph.

Three hundred and sixty people were asked to evacuate their homes in Connecticut, and state officials have estimated more than 350,000 to be without power for as long as 36 hours in the approaching days.