Tag Archives: mid-latitude cyclone

NYC Weekend Weather – Feb 23, 2018

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A wet and unsettled weekend is coming up for NYC after a week that saw record-breaking warmth and large temperature swings. Back-to-back mid-latitude cyclones with their attendant warm and cold fronts will move through the area bringing a cloudy, gloomy feel, and plenty of chances for rain.

Rest of today – multiple rounds of rain showers possible through the morning and afternoon hours ahead of a warm front advancing from the southwest. Rain chances diminishing after around 6PM this evening. Overcast otherwise with a high temperature in the low-40s.

Saturday – overnight temperatures warming due to warm advection ahead of that warm front. We’ll end up in the warm sector of the first of these two mid-latitude cyclones on Saturday with high temperatures rising into the mid-upper 50s under mostly cloudy skies. Some chance for a scattered shower more likely later in the day as some post-frontal rain develops with a cold front exiting to the east.

Sunday – slightly cooler, high temperatures in the upper-40s. Another cloudy day, with rain continuing from overnight Saturday as first a warm front then a cold front moves through with this second storm system.

Monday – finally a dry day with mostly sunny skies and high temperatures in the mid-50s after this chain of storms!

NYC Weekend Weather – Nov 20, 2014

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We got a break from the arctic chill briefly today, but temperatures will fall again for Friday as a cold front currently sitting on top of us passes through. High pressure builds in Friday allowing for sunny conditions, but temperatures will still not be that warm. A big warm up is in store for the second half of the weekend and we could be hitting a rainy low-mid 60s by Monday.

Friday – following the passage of a cold front sitting over us now, skies will clear up overnight tonight and allow for excellent radiational cooling, so low temperatures will be generally in the upper 20s in the city. High pressure works its way in Friday, but with the influence of a cool west wind, the high temperature will probably still only be near 40.

Saturday – another nice day, with plenty of sun, and temperatures will be slightly warmer in the mid-40s, but the big warm up won’t occur until Sunday.

Sunday – a low pressure center with its origins over the Texas Panhandle will be moving northeast towards our area. A warm front will rotate around in front of it, allowing for the influx of a comparatively very warm and moist airmass into the area. The chance of rain will increase steadily along with cloud cover throughout the day Sunday such that by the late evening, showers will be likely. High temperatures should be in the mid-50s.

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Significant warm up ahead for the latter half of the weekend going into early next week

Monday – as the forecast map from the Weather Prediction Center below shows, the low pressure system from the map above is forecast to intensify significantly as it pulls northeast. This is a classic, mature mid-latitude cyclone with an occluded low and front (purple line extending from the center of the low), a cold front, and a warm front. The warm front will rotate through first, allowing us to get into the warm sector, where there will be plenty of energy and moisture for rain, which could occur in periods throughout Monday. High temperatures will be balmy in the mid-60s.9khwbg_conus

Thanksgiving Storm?

The chance of a significant Thanksgiving storm is decreasing, though not completely nil. Once the cold front above passes, we’ll see a return to cooler temperatures in the low 50s. It’s worth mentioning that the set up behind the cold should once again favor lake effect snow, so if you’re traveling to any of the usual snow belt areas around the Great Lakes, be prepared.