World

Photo: The Canadian Press. All rights reserved.

This NOAA satellite image taken Thursday, Oct. 25, 2012, provided by the National Hurricane Center shows a Category 2 Hurricane Sandy moving northward across eastern Cuba.  (AP Photo/NOAA)

The weather monster that U.S. forecasters call "Frankenstorm" was looking more ominous by the hour on Friday.

Meteorologists expect a natural horror show of high wind, heavy rain, extreme tides and maybe snow beginning early Sunday, peaking with the arrival of Hurricane Sandy on Tuesday.

"It's looking like a very serious storm that could be historic," said Jeff Masters, meteorology director of the forecasting service Weather Underground.

With a rare mix of three big merging weather systems over a densely populated region, experts predict at least $1 billion in damage.

Hurricane Sandy, having blown through Haiti and Cuba and leaving more than 20 dead, continues to barrel north. A wintry storm is moving across the U.S. from the west. And frigid air is streaming south from Canada.

If they meet Tuesday morning around New York or New Jersey, as forecasters predict, they could create a big, wet mess that settles over the nation's most heavily populated corridor and reaches as far west as Ohio.

Government forecasters said there is a 90 per cent chance, up from 60 per cent two days earlier, that the East Coast will get pounded.

"What we are doing is we are taking the kind of precautions you should expect us to do, and I don't think anyone should panic," New York Mayor Michael Bloomberg said Thursday.