7 things you should know about this weekend’s icy mix

1 Introduction

The United States is a hot mess right now. Well, maybe I should say common cold mess. The polar air has invaded everything except Florida and the desert of the Southwest. A powerful winter storm in the center of the country has led to advisories stretching from Washington’s Canadian border to the Mexican border in Texas. At least 33 of the contiguous 48 states have some sort of winter warning, watch, or advice in effect on Saturday.

Weather warnings, watches, and advisories for the contiguous United States starting Saturday morning. (Crucial weather)
Expect high temperatures for Saturday, according to the NWS NDFD. (Crucial weather)

And of course that also applies to New Jersey. As we’ve covered all week, our next storm system is not incredibly powerful or well-organized. And it certainly won’t be a huge snow maker for New Jersey. But it will achieve a specific temperature profile conducive to an icy mix of sleet and sleet. And even a light icing of ice is enough to make the conditions very slippery and treacherous.

We’re also tracking two more storm systems targeting New Jersey next week. There have been some interesting developments in the latest model runs.

2.) Timing

-Get started… Winter mixed precipitation comes from southwest to northeast between late Saturday morning (10am) and early afternoon (2pm)
—Brunt … The heaviest precipitation, and the greatest threat to icy conditions, will be from late Saturday afternoon (3pm) to late evening (10pm)
-End… Bad weather conditions should gradually improve on Sunday morning (6am to 12pm)

The high-resolution NAM model prediction for Saturday afternoon shows a winter mix of precipitation over NJ. Blue = snow, pink = freezing rain, purple = freezing rain, green = rain. (College of DuPage Meteorology)

3.) Accumulations

-Snow… Up to an inch possible (although unlikely), especially in the far north.
-Ice… About one-tenth of an inch for most of the state. Less to the far north and along the direct coast.
-Rain… There can be up to 0.30 inches of rain, especially along the immediate coast.

4.) Effects

Ice cream is a nasty business. Especially black ice would be the worst scenario here. Remember, that looks, feels, smells and tastes like regular liquid rain until it hits a frost surface. Then it immediately freezes to solid ice. Instant ice rink.

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

I wouldn’t hang my hat on that forecast because the weather could very well turn to the cold side. (Previous runs have suggested both double-digit snow totals and a half-inch of ice accretion in New Jersey.)

In any case, it is a sign that this prediction is still low confidence and quite complicated. Remember that chaos theory dictates that the weather forecasting game works best when we hit it by storm. We’ll have better control of the next one when the weekend ice storm is over.

7.) The next next storm

The grand finale of this hyperactive period of weather is still scheduled for late next week, in the Thursday through Friday timeframe.

Guess what. Like the Tuesday storm, it tends to be northwest and therefore rainier. Still, the current model consensus paints some snow accumulation at the outset. And with 5 days to go to the first flakes / drops, it can certainly slide back.

GFS model forecast for Friday morning, when another storm system passes through New Jersey. Maybe another rainmaker? (College of DuPage Meteorology)

I remain hopeful that starting next weekend we will get a break from the constant onslaught of major storm systems. Maybe we’ll even see a short (big) warm-up at the end of next week. However, if you are looking for a long lasting warm-up, you will unfortunately have to wait until March.

Twitter for the latest weather forecast and real-time weather updates.

WEATHER: Why this weekend’s potential ice storm is so concerning

Source