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By the numbers: Superstorm Sandy

Watch aerials from WCAU of the devastation from Sandy along the New Jersey Shore. Raw video.

Updated at 7:30 p.m. ET -- President Barack Obama declared a major disaster in the New York City area Tuesday as Superstorm Sandy pounded the Northeast, killing at least 46 people, sweeping homes into the ocean, flooding large swaths of coastal areas, crippling public transit, and leaving millions without power.

Sandy leaves at least 46 dead; Obama declares disaster in NY, NJ

Here is a look at some of the numbers that give an overview of the storm. We'll be updating these figures throughout the day.

Number of deaths blamed on Sandy: At least 46 in the United States, including 18 in New York City; at least 69 were killed earlier when Sandy hit the Caribbean.

Highest rainfall totals: Easton, Md., with 12.55 inches, according to AccuWeather.com.

LIVE blog: Tracking Sandy

Highest wind gusts: Eatons Neck, N.Y., with 94 mph, according to AccuWeather.com.

Highest snow amounts: Redhouse, Md., with 26 inches, according to AccuWeather.com; second highest was Bowden, W.Va., with 24 inches.

Height of waves on Lake Michigan: 20 feet, according to NBC affiliate WTHR.

'There was no stopping it'; Sandy's surge inundates N.J. towns

Power outages: The U.S. Department of Energy said more than 6 million homes and businesses in several states were without electricity due to the storm. About half of them are in New York and New Jersey.

National Guard troops called out: On Tuesday, nearly 7,500 National Guard soldiers and airmen were on duty in Connecticut, Delaware, Maine, Maryland, North Carolina, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island and Virginia.

Rudy Sorrells surveys the damage to his home in Point Pleasant, New Jersey, in the wake of superstorm Sandy.

Days the NYC subway is expected to be suspended: It could be four to five days before subway service resumes.

At least 80 homes burn as six-alarm blaze hits Queens

Number of subway tunnels flooded in NYC: All 10 subway tunnels between Manhattan and Brooklyn were flooded during the storm.

Number of calls per minute to NYC 911 at height of the storm: As of Monday night, the 911 system was receiving roughly 10,000 calls per half an hour, according to WSJ.com. The typical volume is 1,000 calls per half an hour.

Number of patients evacuated from New York University's Tisch Hospital: More than 200 patients, including 20 babies from neonatal intensive care.

Sandy's aftermath: How you can help

Number of days stock exchanges closed: Two, the first weather-related two-day shutdown since the Great Blizzard of 1888.

Evacuations: In New York City, 375,000 people were ordered to leave flood-prone zones ahead of the storm. On Tuesday, more than 3,600 people were at 76 shelters in New York City, which has 16,000 shelter beds.

Reuters and The Associated Press contributed to this report.