The Brief Strong to severe thunderstorms could develop across parts of the New York City area Saturday afternoon and evening. Severe thunderstorm warningsThe National Weather Service has issued a Severe Thunderstorm Warning for parts of Brooklyn, Queens and Nassau County until 5 p.m. Saturday. The primary concerns with Saturday’s thunderstorms are damaging wind gusts and locally heavy rainfall, according to the National Weather Service. Sunday is expected to be mostly sunny with temperatures around 90 degrees in New York City. The National Weather Service advises people to seek shelter inside a sturdy building when severe thunderstorms threaten and to avoid flooded roads if heavy rain develops.