Winter storm Pandora hit eastern United States and is expected to continue spreading north overnight, into Boston and New York.

MOSCOW (Sputnik) – Many Tennessee residents have been left without power as winter storm Pandora hit eastern United States, with nine people having earlier died in the US state amid the Siberian Express arctic blast, weather.com reports.

Pandora, which left several power lines down in Tennessee on Saturday is expected to continue spreading north overnight, into Boston and New York, according to weather.com.

Bundle up, #Noles! Even Tallahassee is under a hard freeze warning tonight. Thanks, Winter Storm #Pandora. pic.twitter.com/23ZMCCjo94 — FSU Alumni Assoc. (@FSUAlumni) February 20, 2015

Meanwhile CBS reported on Saturday citing local officials that five people had died in road accidents in Tennessee amid bad weather conditions, while 9 people had died from hypothermia.

Weather.com reported other hypothermia-related deaths on Friday, including six fatalities in Pennsylvania and two more in Illinois, following the onset of the Siberian Express arctic blast.

Weather.com senior meteorologist Nick Wiltgen said on Friday that this week "ranks among the most intense arctic outbreaks so far in the 21st century for the eastern US".

Schools in several US states, including Alabama and Georgia, were closed amid the harsh weather conditions.

According to CBS, Tennessee Governor Bill Haslam upgraded the state of emergency to Level 2 on Saturday, amid warnings of possible flash flooding.

CBS said that overall, 43.3 million Americans were under a winter storm warning on Saturday night.

Schools in several US states, including Alabama and Georgia, were closed amid the harsh weather conditions.

The United States has been hit by several storms this winter season, including Linus and Juno, which led to public transport and flight disruptions and prompted several US states to issue blizzard warnings.