Forecasters warn to prepare for a wet and windy Saturday on Long Island.

Meteorologists have their eyes on a line of showers over eastern Pennsylvania that was slowly making its way east toward the Island, said Tim Morrin, National Weather Service meteorologist, based in Upton.

Following a period of dense fog that could lessen visibility to a quarter mile of less, comes the potential for heavy rain, possibly with rates of as much as 1 inch an hour, the weather service said.

Nassau County could start seeing this system about 2 or 3 a.m. Saturday, said Morrin, who said the system appears to be “fairly impressive.”

The heavy rain could lead to minor coastal flooding for low lying and poor drainage areas, the weather service said.

Look for the chance of showers and unsettled conditions to continue into the afternoon, Morrin said.

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Also, mainly for the afternoon and evening hours, expect strong winds of about 20 to 30 mph — with possible isolated gusts surpassing 40 mph, the weather service said, which could lead to scattered power outages.

The weather service also said temperatures are forecast to fall Saturday, with highs in the lower to mid 50s.

News 12 Long Island meteorologist Rich Hoffman said Saturday is expected to have “that raw feeling.”

Sunday should be sunny and breezy with a high near 60.