Event Summary

A low pressure system over the Ohio Valley early Sunday morning on December 1st, intensified as it moved northeast across Eastern Canada during early Monday morning. A strong cold front that extended southwest from this low, swept across the local region early Monday morning. Thunderstorms formed in the moist unstable airmass ahead of the cold front. These storms produced torrential rainfall that caused widespread small stream, street and poor drainage flooding. Occasional rain began across the region during Saturday afternoon, November 30th. Here are selected rainfall event totals for: New York City: from 1.53 inches at JFK Airport to 2.43 inches at Jamaica Estates. Nassau County: 1.75 inches at Levittown. Suffolk County: from 0.89 inches at East Quogue to 2.15 inches at Mt. Sinai. Westchester County: from 1.59 inches at Ossining to 2.06 inches at Westchester County Airport.