More Storms, More Flash Flooding Possible In The Hudson Valley

HUDSON VALLEY, NY — Slow-moving showers with possible thunderstorms could produce locally heavy downpours Monday and Tuesday, and the Weather Prediction Center has placed most of the region in a slight risk for excessive rainfall.

"Unfortunately, predicting the position of these showers & T-Storms in advance is virtually impossible," Bill Potter of Hudson Valley Weather said on Facebook. "So anyone with plans will need to keep an eye on the radar, to see if a rain delay is headed your way."

We could again also experience scattered areas of flash flooding.

For Orange, Putnam, Rockland and Westchester counties, there's a flood watch in effect until midnight.

For Dutchess and Ulster counties, there's a hazardous outlook.

There is a continued chance of showers and isolated thunderstorms through this afternoon. Locally heavy downpours could result in localized flooding of urban, poor drainage, and low-lying areas or isolated flash flooding.

Another storm system will bring a widespread rainfall and a few thunderstorms later Tuesday night through Wednesday. Locally heavy rainfall is possible and there is a marginal to slight risk for excessive rainfall which would result in some flash flooding.

"With a saturated atmosphere, there remains isolated potential for up to 4" or slightly more of rainfall through this evening from enhanced rainfall caused by heavy downpours from slow moving and training thunderstorms," Bruce Furbeck of First Due Weather said on Facebook.

While Tuesday will be drier, the risk of heavy rain returns at night and persists through much of Wednesday, he said.

"A strong cold front arrives during this period and could trigger potential for a Trace to 2" of rainfall. A widespread 1" to 2" of rainfall is suggested with potential for heavy downpours providing more enhanced rainfall that could fall during a short period of time," Furbeck said.

Wind gusts are not now expected to be a factor, as they were in the storms Thursday and Friday that left thousands without power and blew a large pine tree onto a school bus filled with children.

SEE:

• More Than 50,000 Lose Power In Hudson Valley Thunderstorms Thursday
• Severe Storms Knock Power Out To Thousands Friday Afternoon In The HV

Here are the next 48 hours at a glance:

There is relief on the way.

"A trough will dive in from Canada on Wednesday, and spread more widespread showers and T-Storms. However, this frontal boundary will push through the region... clearing us out by Thursday," Potter said. "Thursday looks cooler, much less humid, and a good deal of sunshine. Best of all... overnight lows near 50° will allow those windows to open and get some fresh air in the house."

Here's the 5-day forecast based on Rockland County:

• Monday - Mostly cloudy. A chance of showers and thunderstorms late this morning, then showers likely with a chance of thunderstorms this afternoon. Highs in the upper 70s. Northeast winds around 5 mph. Chance of rain 60 percent.
• Tonight - Mostly cloudy. Showers likely with a chance of thunderstorms in the evening. Lows in the mid 60s. North winds around 5 mph. Chance of rain 60 percent.
• Tuesday - Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. North winds around 5 mph, becoming southwest around 5 mph in the afternoon. Chance of rain 20 percent.
• Tuesday Night - Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the mid 60s. South winds around 5 mph. Chance of rain 60 percent.
• Wednesday - Showers with a chance of thunderstorms. Highs in the lower 70s. Southeast winds around 5 mph, becoming south in the afternoon. Chance of rain 80 percent.
• Wednesday Night - Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 50s. Chance of rain 70 percent.
• Thursday - Sunny. Highs in the lower 70s.
• Thursday Night - Mostly clear. Lows in the lower 50s.
• Friday - Sunny. Highs in the lower 70s.
• Friday Night - Partly cloudy. Lows in the mid 50s.