T-storms, Flooding Possible To Start Work Week: HV Weather

With the heat wave behind us, the Hudson Valley now faces a day with potentially heavy rain and thunderstorms before we can get to the cooler weather. The National Weather Service has issued hazardous weather outlooks for the region, plus a flash flood warning for good measure.

For the mid-Hudson Valley, the NWS issued a hazardous weather outlook for Columbia, Dutchess and Ulster counties for Monday.

Widespread rain with isolated thunderstorms is expected today and tonight. The region is in a marginal risk for severe thunderstorms. Damaging winds are the main threat. Periods of heavy rain are possible which may result in ponding of water and flooding of small streams, urban and poor drainage areas. An isolated flash flood is possible.

The lower Hudson Valley's hazardous weather outlook is in effect for Orange, Putnam, Rockland and Westchester counties.

There is also potential for isolated strong to severe thunderstorms to affect the region, mainly this afternoon and evening. The main threat with this activity will be damaging wind gusts.

Additionally, there is a flash flood watch covering Orange, Putnam, Rockland and northern Westchester counties in effect from noon Monday through 8 a.m. Tuesday.

The NWS said rain showers with embedded thunderstorms will develop and move across the area Monday through early Tuesday. Multiple rounds of thunderstorms and heavy rainfall with be possible, with rainfall totals of around 1.5 to 2 inches expected. Locally higher amounts are possible.

Flash flooding will be possible, especially in areas of poor drainage, low-lying areas and in urban areas. Fast reacting rivers and streams may flood as well.

Here's what we can expect in terms of rainfall:

How does the work week shape up? Here's the forecast for northern Westchester from the NWS:

• Monday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce gusty winds and heavy rain. High near 80. East wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
• Monday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Patchy fog. Low around 65. North wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
• Tuesday: Showers likely, mainly before noon. Cloudy, with a high near 74. North wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
• Tuesday Night: A 20 percent chance of showers before midnight. Patchy fog. Otherwise, mostly cloudy, with a low around 61. Light north wind.
• Wednesday: Mostly sunny, with a high near 80. North wind around 6 mph.
• Wednesday Night: Partly cloudy, with a low around 61.
• Thursday: Sunny, with a high near 83.
• Thursday Night: Mostly clear, with a low around 64.
• Friday: Sunny, with a high near 86.
• Friday Night: Mostly clear, with a low around 66.

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