Hudson Valley Forecast: Hazardous Outlook For Flash Flooding

HUDSON VALLEY, NY — Flash flood watches go into effect for much of the Hudson Valley Wednesday afternoon as the remnants of Ida pass near the region.

The hazardous weather outlooks posted by the National Weather Service predict that deep tropical moisture will interact with a nearly stationary frontal boundary across the Middle Atlantic and Northeast to produce heavy rainfall Wednesday afternoon through Thursday morning. A widespread 2-4 inches of rain is forecast with locally higher amounts possible, particularly along Westchester County's Sound Shore.

"Wednesday night, as the center of circulation approaches the east coast, that’s when the heaviest rain is likely," said Alex Marra and Bill Potter of Hudson Valley Weather. "The key to the forecast will be the position of the trough. Based on the current guidance… the lower half of the Hudson Valley is expected to see heavier rainfall than the northern Hudson Valley."

Abnormally wet conditions so far this summer (most recently Henri) have resulted in higher than normal streamflow and water tables, which elevates the flash flood threat. Flooding of fast-responding rivers and streams is possible, and flooding of main stem rivers cannot be ruled out.

The flood watches are in effect until Thursday afternoon, when the rain is expected to begin to taper off.

After Ida moves through, the Hudson Valley should have a few nice days to celebrate the end of summer.

• Wednesday - Showers likely in the morning, then showers in the afternoon. Locally heavy rainfall possible in the afternoon. Highs in the upper 60s. Northeast winds around 5 mph. Chance of rain 90 percent.
• Wednesday Night - Lows in the lower 60s. Northeast winds 5 to 10 mph. Gusts up to 25 mph after midnight. Chance of rain 90 percent.
• Thursday - Showers. Highs in the upper 60s. North winds around 10 mph with gusts up to 25 mph. Chance of rain 90 percent.
• Thursday Night - Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the upper 50s. Chance of rain 40 percent.
• Friday - Sunny. Highs in the lower 70s.
• Friday Night - Partly cloudy. Lows in the upper 50s.
• Saturday - Mostly sunny. Highs in the mid 70s.
• Saturday Night - Partly cloudy. Lows in the lower 60s.
• Sunday - Mostly sunny. Highs in the upper 70s.
• Sunday Night - Mostly cloudy. Lows in the mid 60s.
• Labor Day - Partly sunny. Highs in the upper 70s.

Sounds perfect for: 1-Tank Adventure: Hudson Valley Hot-Air Balloon Festival

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