Gov. Dannel Malloy asked people to check their heater vents to make sure they're not blocked by snow, which could cause a carbon monoxide build-up in a home.
Malloy also said in his 11 a.m. briefing the statewide driving ban is likely to remain in place all day. He said cars trapped by drifts make the problem worse.
"There are many roads that are impassable in the state because of stalled cars and snow," Malloy said. He said all roads won't be cleared today, but banning driving will help. "This will allow us to clear the roads much more rapidly and get back to normal much more rapidly."
Malloy said about 39,000 people are without power, and restoring power is underway. Sometimes that work is delayed by impassable roads. He said some roads are impassable because of downed trees and wires.
Malloy said the weather tonight is likely to be very cold and many towns are opening warming shelters. Danbury may not open a warming shelter, said Danbury Mayor Mark Boughton, because most of the city has power.
Boughton said some side roads are still impassable, and the city is working on them. He said people are driving to work and businesses are opening their doors, despite the governor banning driving statewide.