Event Summary

On Sunday, June 17th, abundant moisture from the remnants of tropical storm Allison, combined with a cold front approaching from the west, produced extremely heavy rainfall across much of southeast New York during the early morning hours. Rainfall rates of up to 3 inches per hour produced widespread street and highway flooding, in addition to some flash flooding of small streams. The area of heavy rain then slowly shifted east, across New York City around mid-morning through midday, Nassau and western Suffolk Counties from late morning through early afternoon, and across central and eastern Suffolk County during the early to midafternoon hours. There were numerous reports of street and highway flooding in the New York City area, as well as Nassau and Suffolk Counties on Long Island, which led to several major road and highway closings. Here are some rainfall totals for this event: In the New York City area: From 1.37 inches in Brooklyn, to 2.36 inches at John F. Kennedy International Airport in Queens. In addition, a daily record amount of 1.55 inches occurred at Central Park.