Possibility of 30 inches of snow, wind gusts of 65 MPH The tri-state region is bracing for a blizzard that is expected to hit Monday afternoon and could measure up as one of the worst snowstorms in New York City history. With a possibility of 30 inches of snow and wind gusts of 65 miles an hour, New York City Mayor Bill de Blasio came out Sunday with members of his emergency response team to urge residents to use extreme caution over the next two days. “My message to all New Yorkers is, prepare for something worse than we have seen before,” said Mr. de Blasio. “Don’t underestimate this storm.” Forecasters have issued a blizzard warning for New York City, northern New Jersey, Long Island and most of southern Connecticut. The storm moved through the mid-Atlantic Sunday, was expected to get progressively worse as it comes east and would “max out” as it hits the New York area, said John Cristantello, a meteorologist with the National Weather Service. Lighter snow is expected to begin midmorning Monday and turn heavy around the evening commute into Tuesday morning, with sustained winds from 30 to 40 miles an hour, according to the weather service. Accumulation will be at least 20 inches across the region and temperatures will be in the 20s. An expanded version of this report appears on WSJ.com.