Superstorm Sandy is limping through western Pennsylvania on its way up north to Canada, much of its power already spent wreaking havoc and destruction first in the Caribbean and then along the East Coast. Sandy isn't done dumping water on America's most populous region, and the extent of the damage is still being tallied, says Ted Anthony of The Associated Press. But so far, the "weather event of a lifetime" has left in its wake "a dazed, inundated New York City, a waterlogged Atlantic Coast, and a moonscape of disarray and debris — from unmoored shore-town boardwalks to submerged mass-transit systems to delicate presidential politics." Here's a look at the numbers, so far:

Sandy's size, in miles, as measured by diameter of tropical storm–force sustained winds — almost double the diameter of Hurricanes Isaac and Irene

Types of weather-related risks from Sandy: High winds, coastal flooding, rain-caused flash/river flooding, and snow/blizzards

$20 billion
Estimated cost of U.S. damage from Sandy, according to IHS Global Insight

Estimated (and rising) number of people killed in the U.S. from the storm, more than half in New York state (22 of them in New York City)

Deaths blamed on Sandy in the Caribbean

8.5 million
Homes and businesses left without power in 17 states, from North Carolina to Michigan

Days until power is restored to some parts of New York City 

9.3 million
People left without power by Hurricane Irene in 2011, including in Puerto Rico

New York City and New Jersey residents in emergency shelters Tuesday night

Flights canceled worldwide due to the storm

Record surge of seawater, in feet, that crashed into lower Manhattan, a combination of a high tide and 9.23 feet of storm surge; the previous record, 10.02 feet, was from Hurricane Donna in 1960

Reports of downed trees made to New York City's parks department

Inches of rain from Sandy recorded in Wildwood Crest, N.J., as of Oct. 30

Percent of cell phone towers knocked out in 10 states

Percent of cable customers without service in affected areas

Hours it took to evacuate 300 patients — including 20 infants from the neonatal intensive care unit — from New York's NYU Langone hospital using darkened stairwells

1.15 million
Hurricane mentions on Twitter in the 21 hours after the storm hit New York, according to Socialbakers

Sandy-related photos per second being uploaded to image-sharing service Instagram during the storm

Percent increase in Netflix video streaming on Oct. 29, versus a week earlier

Sources: AP, The Christian Science Monitor, CNN (2), Detroit Free Press, The New York Times, Weather Channel, USA Today, ZD Net