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Rain will become snow as storm marches through Lehigh Valley; flood watch remains in effect

A storm expected to bring heavy rain to the Lehigh Valley is now expected to bring a dusting to half-inch of snow around the Lehigh Valley. Several inches of snow are expected in the Poconos. (Morning 첥Ƶ file photo)
A storm expected to bring heavy rain to the Lehigh Valley is now expected to bring a dusting to half-inch of snow around the Lehigh Valley. Several inches of snow are expected in the Poconos. (Morning 첥Ƶ file photo)
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The weather outside is certainly frightful.

The National Weather Service in Mount Holly, N.J., has changed its predictions for Sunday’s storm, which was already predicted to produce 2-3 inches of rain in the area.

Now, the weather service is adding snow to the mix, leading to at least one winter attraction closing for the night. The Poconos is forecasted to get at least 2-3 inches of snow, with higher elevations predicted to get up to 5 inches. A winter weather advisory is in effect there from midnight until noon Monday.

The Lehigh Valley can expect to see at least a dusting of snow as well as temperatures dive overnight.

A cold front is now expected to rapidly move through the area, causing temperatures to plummet and changing rain to snow as it moves through.

Meteorologists are still predicting 2-3 inches of rain for the Lehigh Valley, but weather models are now showing 4 inches  could be possible in some areas, according to the weather service. A flood watch will remain in effect until 4 p.m. Monday.

Rain and snow won’t be the only threats from the storm. Strong winds with 30-40 mph wind gusts are also possible across the region, according to the weather service.

Due to the risk the wet weather and high winds, the Lehigh Valley Zoo canceled Winter Lights Spectacular. The event will reopen at 5:30 p.m. Wednesday, its next scheduled date. All ticket holders for Sunday’s show will receive an email with rescheduling instructions in the next 24 hours.

Here is the extended forecast from the National Weather Service:

Sunday: Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 57. South wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday Night: Rain before 5 a.m., then rain, possibly mixed with snow. The rain could be heavy at times. Some thunder is also possible. Low around 34. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Monday: Snow, possibly mixed with rain, mainly before 2 p.m. High near 40. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Monday Night: Mostly clear, with a low around 25. West wind 5 to 15 mph, with gusts as high as 30 mph.

Tuesday: Sunny, with a high near 43. Southwest wind 5 to 10 mph.

Tuesday Night: Mostly clear, with a low around 29.

Wednesday: Mostly sunny, with a high near 42.

Wednesday Night: Mostly clear, with a low around 23.

Thursday: Sunny, with a high near 40.

Thursday Night: Mostly clear, with a low around 26.

Friday: Sunny, with a high near 48.

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