Now that it's January, cold air is pretty much here to stay. So we always have to be vigilant to the threat of wintry, icy weather.

And we've got such a chance for Wednesday morning. A little one.

Spotty showers are expected to develop after Midnight Tuesday night, lasting through about midday Tuesday. The best chance for showers will be along the eastern half of New Jersey. (So mainly the coast).

High-res NAM showing showers developing over eastern NJ early Wednesday morning. Some rain, some icy mix. (College of DuPage Meteorology)
High-res NAM showing showers developing over eastern NJ early Wednesday morning. Some rain, some icy mix. (College of DuPage Meteorology)
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This storm system will be accompanied by rising temperatures. So a massive winter weather event is not expected here — what falls from the sky will be primarily liquid rain.

High-res NAM model showing temperatures at or above freezing by mid-morning Wednesday. (College of DuPage Meteorology)
High-res NAM model showing temperatures at or above freezing by mid-morning Wednesday. (College of DuPage Meteorology)
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Having said that, the ground is cold. Freezing cold. Especially in southern New Jersey, which still has substantial snow cover around.

When liquid raindrops hit a freezing cold surface, they freeze on contact. And that is what we call freezing rain.

A Winter Weather Advisory (purple) covers all of NJ but the coast for Wednesday morning.
A Winter Weather Advisory (purple) covers all of NJ but the coast for Wednesday morning.
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There is a possibility of some icy mix and/or freezing rain Wednesday morning. (Maybe some non-accumulating snow and sleet too.) So the National Weather Service has issued a Winter Weather Advisory for all of non-coastal New Jersey, for the following times:

—South and coast... inland Atlantic, Burlington, Camden, inland Cape May, Cumberland, Gloucester, inland Ocean, and Salem counties... 5 a.m. to 9 a.m. Wednesday
—North and west... Hunterdon, Mercer, Middlesex, inland Monmouth, Morris, Somerset, Sussex, and Warren counties... 7 a.m. to Noon Wednesday
—North and east... Bergen, Essex, Hudson, Passaic, and Union counties... 4 a.m. to 10 a.m. Wednesday

By definition, a Winter Weather Advisory cautions that travel could become hazardous due to the weather. In this case, the risk is for a light glaze of ice — it doesn't take much icing to make things very slippery.

As I've mentioned online and on-air, I'm not overly concerned. And I don't want to make a big, hairy deal of this minor storm system. But there is a chance for icy spots, during the morning commute, so it's definitely worth the heads up. Watch your step, and drive carefully.

We are still monitoring a much more impactful chance of snow coming up Thursday night into Friday morning. The big question: Will it be a "1 to 3 inch" or a "3 to 6+ inch" event? We'll talk more about that in the coming hours and days.

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