Several lines of strong thunderstorms affected Long Island today. The first band hit eastern Suffolk County with torrential downpours and high wind gusts during the early afternoon. That line of storms caused localized flash flooding across the east end. The second line of storms moved in along a cold front just in time for the evening rush hour. That line of storms wreaked havoc on the evening rush by causing flooding that snarled traffic on the LIE and Grand Central Parkway. A lightning strike also knocked out LIRR service between Penn Station and Jamaica.
Behind the cold front, much lower humidity has already arrived diminishing the threat for heavy rain. Any isolated showers early this evening will gibve way to clearing skies overnight.