January 2017 - Page 16 of 18 - New York Metro Weather

Light snow tapers off this morning…more light snow possible Saturday

January 6, 2017/by Miguel Pierre

Snow has begun tapering off and ending southwest to northeast across all zones early this morning. This occurs as low pressure tracks east-northeast off the North Carolina coast and more lift with an associated upper-level jet streak start to move the northeast of the region. Most snowfall reports so far have been between 1” – 3″, as expected. Some additional light accumulation is possible over the next few hours over Eastern parts of Long Island and Connecticut that could bring snowfall totals to near 4”. Otherwise, take more precaution driving out roadways, as some slick spots will likely remain for another into the mid-morning hours.

Light Snowfall Likely Tonight into Early Friday

January 5, 2017/by Miguel Pierre

A polar shortwave disturbance will cause low pressure to develop along the North Carolina coast this evening, with a low pressure area slowly intensifying and tracking to the northeast. The storm system will remain relatively progressive, with the brunt of its precipitation remaining over the Atlantic Ocean.

However, with some lift fro, an upper-level jet streak overhead, snow is likely to spread throughout parts of the Mid Atlantic and Southern New England later tonight into Thursday morning. Most of the snow is expected to fall on the lighter side of the intensity scale, with liquid totals only expected to reach .10″ – .25″.

However, instability and large omega (lift) in the snow growth region will likely to lead to the formation of large dendrites. Snow ratios from this event could be as high as 20 to 1 in some areas. With that in mind, snowfall totals of 1-3″ are expected throughout much of the region. Roads could be slick or snow covered for Friday’s morning commute.

4km NAM model sounding for JFK airport showing large dendrite snow growth

Some lower amounts are possible well inland where moisture will be more limited. Heavier banding may occur closer to the coast, especially over the NJ coast and Long Island with the potential for isolated totals upwards of 3”. Snow will taper off Thursday morning as low pressure moves away from the region. Clouds will break for some sunshine in the afternoon as drier moves into the region.

Storm Total Snowfall Forecast updated January 5th, 2017

Another storm threatens the region this weekend — more details on that coming tonight for Premium members.

AM All Zones Update: Coastal storm scrapes by Friday

January 5, 2017/by John Homenuk

Cool, crisp, and windy conditions are likely to be the dominant weather today as high pressure builds into the area and arctic air surges through as well. The cold start to the day will continue well through the afternoon hours as high temperatures remain below seasonal averages throughout the area. Blustery winds are expected as well, as mixing and steep lapse rates help mix down some winds aloft.

As we move towards Friday, the focus will turn towards a polar disturbance which will drop southwards from Canada into the Mid Atlantic States. While the atmosphere will be cold and dry initially, a gradual increase in moisture and lift in the atmosphere is expected from late Thursday Night into early Friday morning. Clouds should increase from southwest to northeast.

All Zone Forecast Update: Snow Becoming More Likely Friday Morning

January 4, 2017/by Doug Simonian

We are still very closely monitoring the two snow threats later this week and this weekend, and while there is some evidence that the second storm on Saturday may only be a graze or a miss out to sea altogether, the idea for snow on late Thursday night and Friday is gaining steam.

As far as the rest of this evening goes, we still have strong downsloping winds, which will keep temperatures mild initially. An Arctic frontal boundary is crossing the area and has provided a lot of dynamics as well as a decent pressure gradient, and this is expected to continue for the rest of this evening into the early part of the overnight. We have already had wind gusts up to 40mph at times this afternoon, so these are expected to continue through at least midnight but then gradually lessen after 3:00am. Still, though, even tomorrow we expect winds to stay around 15mph and gust between 25-30mph — so a relief from today but still breezy.

After 6:00pm this evening is when we expect the true temperature drop to take place, and overnight lows will be in the 20s for most of the area. The front will have fully crossed on Thursday, so despite still some downsloping winds, highs will only be in the low to mid 30s. Clouds will also be on the increase out ahead of the storm system for Thursday night into Friday.

Archive for month: January, 2017