7 things you need to know about this weekend’s icy mix

1. Introduction

The United States is a disaster right now. Well, maybe I should say so cold mess. Arctic air has invaded everything but Florida and the southwestern desert. A powerful winter storm in the middle of the country has sparked warnings ranging from the Canadian border in Washington to the Mexican border in Texas. At least 33 of the 48 contiguous states have some kind of winter warning, surveillance or advice on Saturday.

Weather warnings, clocks, and warnings for the contiguous United States starting Saturday morning. (Fundamental time)
Forecast high temperatures for Saturday, according to the NWS NDFD. (Fundamental time)

And that includes New Jersey, of course. As we’ve discussed all week, our next storm system is no incredibly powerful or well organized. And it definitely won’t be a big snowfall for New Jersey. But it will reach a specific temperature profile conducive to an icy mix of sleet and icy rain. And even with a light glaze of ice is enough for the conditions to be very slippery and treacherous.

We also continue to follow two more storm systems with the goal of New Jersey next week. There have been some interesting news in the latest versions of the model.

2.) Timing

-To start… The precipitation of the winter mixture will arrive from southwest to northeast between Saturday in the late morning (10 am) and early afternoon (2 pm)
“Brown …” The heaviest rainfall and the greatest threat to frost will be from Saturday afternoon (15:00) to the afternoon (22:00)
-Final … Unpleasant weather conditions should gradually improve on Sunday morning (from 6:00 to noon)

The high-resolution NAM model forecast for Saturday afternoon shows a winter mix of precipitation over NJ. Blue = Snow, Pink = Snow, Purple = Freezing Rain, Green = Rain. (DuPage Faculty of Meteorology)

3.) Accumulations

“Snow …” Up to a possible inch (though unlikely), especially at the northern end.
“Ice cream …” About a tenth of an inch for most of the state. Less at the northern end and along the immediate coast.
-It rains … It can rain up to 0.30 “of flat rain, especially on the immediate coast.

4.) Impacts

Ice is a nasty business. In particular, freezing the rain would be the worst case scenario. Remember that it looks, smells, and has a taste of regular liquid rain until it touches a freezing surface. It is then instantly frozen in solid ice. Instant skating rink.

GFS model forecast for Tuesday morning. This solution suggests that NJ will end up on the warm (rainy) side of the storm. (DuPage Faculty of Meteorology)

I wouldn’t hang my hat on that forecast, as things could go back to the cold part. (Previous runs have suggested a total of double-digit snowfall and a half-inch of ice accretion in New Jersey).

In any case, it is a sign that this forecast is still unreliable and quite complicated. Remember, chaos theory dictates that the weather prediction game works best when we do it from one storm at a time. Next time we’ll have it better once the weekend ice storm clears.

7.) The next storm

The grand finale of this hyperactive time period is still scheduled for the end of next week, in the time frame from Thursday to Friday.

And guess what. Like Tuesday’s storm, it tends to the northwest and is therefore rainier. However, the consensus of the current model does paint a bit of snow accumulation at first. And, with 5 days left for the first flakes / drops, it can definitely change again.

GFS model forecast for Friday morning, when another storm system passes through New Jersey. Possibly another rain maker? (DuPage Faculty of Meteorology)

I am very excited that from next weekend we will break the constant onslaught of significant storm systems. We could even see a brief (big) warm-up at the end of next week. However, if you are looking for a longer lasting sustained warm-up, you will unfortunately have to wait until March.

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WEATHER: Why the potential ice storm this weekend is very troubling

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