Tag Archives: polar jet stream

NYC Weekend Weather – Mar 1, 2019

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Although the calendar has flipped to March and we’re less than 3 weeks from the official start of spring, the weather has taken a decidedly winter-like turn as of late. This pattern will continue over the weekend and into next week. Initially, we’ll contend with 2 coastal storms that will bring chances for snow, and then enter next week with temperatures well below normal for this time of year. Sadly, this colder than normal pattern looks locked in for the next week or more

Rest of today – overcast conditions with temperatures hovering in the mid-30s. Precipitation will move back into the area by later this evening. Thermal profiles overnight point to a mix of snow/sleet at the coast with lows just around freezing. The local forecast office calls for an accumulation of 1-2″ of this wintry mess.

Weather Prediction Center surface forecast for 7AM Saturday

Saturday – the wintry precipitation continues the first half of the day as the first of two coastal storms continues to impact the region. High temperatures should warm up to around 40ºF with mostly cloudy skies, and precipitation should die off later in the day. Overnight lows should be around freezing.

Sunday – starts off as a decent enough day, but a second storm will be brewing and moving offshore, impacting the area overnight into Monday. High temperatures should be similar to Saturday in the low-40s with partly sunny skies. At this point, the primary precipitation modes at the coast appears to be a rain/snow mix. Thermal profiles don’t appear cold enough to support all snow with overnight lows expected to be above freezing around 35ºF.

Global Forecast System 1000 mb – 500 mb height, pressure, thickness foreast for 6AM Monday

Monday – precipitation tapering off early in the morning as this storm is a fast-mover. Temperatures topping out in the upper-30s with mostly cloudy skies.

Colder than Normal Temperatures Ahead

Climate Prediction Center has a 6-10 day temperature outlook suggesting a colder than normal pattern for much of the country, including our area. During this time, the polar jet stream is expected to dip further south allowing colder air to penetrate into the Continental US.

NYC Weekend Weather – Apr 1, 2016

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It’s going to feel like a bad April Fool’s joke hit us this weekend when the weather turns to a locked in pattern of below average temperatures – cold enough at times to support snow, perhaps even enough to accumulate. Hard to believe that we almost hit 80ºF in February.

Rest of today – a potent storm system that pummeled large parts of the south with severe weather, including tornadoes, will be moving through the area this afternoon. We won’t see anything nearly as powerful as the storms that hit the south, but it does look like there will be two rounds of moderate rain with a few thunderstorms. The first batch looks to hit around noon and lunch hours, while the second arrives later this evening around 7PM. Gusty southwest winds up to 30mph ahead of the passage of the cold front responsible for these storms will bring temperatures well into the upper-60s and low-70s.Screen Shot 2016-04-01 at 9.49.35 AM Screen Shot 2016-04-01 at 9.49.53 AM

Saturday – much cooler with temperatures in the upper-50s to around 60ºF. A chance for scattered showers remains due to the approach of another cold front from the Great Lakes.

Sunday – we’ll begin to feel the chill in earnest on Sunday as temperatures drop into the mid-30s overnight from Saturday into Sunday. A polar vortex will be moving in over a large part of the northern United States. There could even be some snow showers in the city on Sunday morning before skies clear and winds pick up from the northwest into the 20-30mph range with clearing skies. High temperatures will only be in the mid-40s, nearly 10ºF below average.

Monday – a warm front preceding a low pressure system will move through Monday allowing for temperatures to rise into the low-50s, however, this will be accompanied by rain. Overnight into Tuesday, temperatures should cool enough for this rain to transition to all snow for a period.

A Cool April

The polar jet stream will be dipping well south of us during the medium term, allowing for a polar vortex to move over the region. This will lead to a cooler than average first half of the month, and possibly the entire month. Today might be the last day we see the 60s and 70s for quite some time, so go out and enjoy it while you can.

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