Monday, August 15, 2011

NYC flooding

Flooding in Massapequa, New York on Sunday. CBS 2

A record 7.72 inches of rain fell at JFK yesterday flooding roads and basements and knocking out power to thousands in metro New York City. The rain, part of a system that stretched from the middle Atlantic to the northeast, generated slow moving thunderstorms that deluged many areas. The northern edge of the same system produced severe thunderstorms in our region with gusty winds and heavy rain. Trudeau Airport reported just under one inch of rain (22mm) for the 24 hours, I measured about 0.5" (15mm) at my home west of the airport. Heavier rain occurred southwest of Montreal and into eastern Ontario and upstate New York. As the upper level low over Ohio and the coastal system move slowly northeast today, more showers are possible with heavy amounts up to 2 inches (50mm) across the region in the slower moving cells. Radar is showing showers and some thunderstorms over southern Vermont moving north this morning. They should reach southern Quebec by the afternoon. The air mass will remain unstable well into Tuesday before drier air moves in from the northwest lowering dew points and humidity levels. Wednesday and Thursday look sunny and warm at this time.

Above: Accu-Weather Radar this morning.

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