The agency that operates New York's and New Jersey's three major airports is bringing in extra personnel to work 12-hour shifts.

 

Snow removal equipment operates at Newark Liberty International Airport in 2010 (Jeff Zelevansky/Getty Images)

The Port Authority of New York and New Jersey says it's been a routine for many of this winter's storms.

The region is preparing for a mix of snow, sleet and rain starting early Thursday.

Spokesman Ron Marsico says the agency has more than 200 pieces of snow removal equipment at its airports.

That includes melters that can liquefy up to 500 tons of snow an hour. He said plows can clear snow at 40 mph.

FlightAware.com reports that hundreds of flights have already been canceled for tomorrow in-and-out of Newark, LaGuardia, JFK and Philadelphia airports.

The agency also operates the George Washington Bridge and several other New York City bridges and tunnels.

It will consider speed restrictions as conditions warrant.

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