“I don’t have enough evidence to sit here and beat my chest and say, ‘this is it,’ ” said Lerner.

But many factors are lining up to create the possibility of a multi-year drought.

There has already been a full year of dryness in the western United States, portions of the Canadian Prairies and parts of Mexico following two years of record precipitation in the U.S.

“We have without question come out of the persistent wet pattern,” said Lerner.

North America is in a full blown La Nina weather cycle, which typically results in a dry winter.