Weather Alert for Rockland County: Coastal Low Brings Rain, Wind, Flooding, and Beach Erosion

Issued by The National Weather Service

Effective Date: From Tonight through Saturday

A slow-moving coastal low pressure system is expected to impact Rockland County, bringing with it a range of weather hazards. Here are the details:

Rainfall: We anticipate moderate to heavy rain throughout the event, with the bulk of the precipitation occurring early Friday morning into Friday evening. Total rainfall amounts of 2 to 3 inches are expected across the region, but locally higher amounts of 3 to 5 inches are possible. However, we have low confidence in the exact occurrence and location of these heavy rainfall amounts.

Rainfall Rates: There is a low probability of intense rainfall rates reaching 1 inch per hour and/or 3 inches in three hours on Friday.

Impacts: This weather event presents several hazards, including:

  • Flooding: Minor urban, poor drainage, and low-lying areas in Rockland County may experience flooding. Additionally, there is a minor risk of quick-responding river and stream flooding, mainly early Friday morning into Friday evening. Isolated to scattered flash flooding instances are possible with locally heavy rainfall, although confidence is currently low. Please monitor subsequent forecasts, as we will refine our predictions over the next 24 hours.
  • Coastal Flooding: Coastal communities in the NY/NJ harbor, Jamaica Bay, western Great South Bay, and coastal Westchester and Fairfield should prepare for coastal flooding, reaching up to 1 1/2 feet above ground level. This coastal flooding is expected during high tidal cycles tonight, Friday morning, Friday evening, and likely Saturday morning. Some localized coastal flooding is also likely elsewhere in the region.
  • Beach Erosion: Ocean beach erosion with waves reaching heights of 4 to 7 feet will persist through at least Saturday. This will be particularly pronounced during high tide periods.

Please stay informed and take appropriate precautions in Rockland County.

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