John Homenuk

1/15 All Zone Update: High pressure in control for now

/by

On the heels of a weak disturbance Saturday, high pressure has built back into the region today. This high pressure will be the dominant force in the weather pattern throughout the Northeast US over the next few days as a thermal gradient, responsible for enhancing yesterdays low pressure area, sinks southward into the Middle Atlantic. Temperatures will fall colder as this cold high pressure builds overhead.

Sky conditions, however, will remain quite pleasant — with plenty of sunshine and the weather remaining mostly calm. This pattern will remain through Monday as temperatures are expected to gradually moderate. Another storm system will gradually develop well to our west over the Central United States, and while it will remain far from our area to begin with, southerly winds will begin bringing warmer air northward through the Mid Atlantic and Northeast once again.

Read more

John Homenuk

1/14 All Zones Short Term Update: Periods of snow today

/by

A developing low pressure system to the south and southeast of the area, along a temperature gradient in the Mid Atlantic states, will continue to develop later this afternoon and into the early part of this evening. Enough lift exists for the development of precipitation throughout the area, particularly in parts of East/Southeast PA and New Jersey.

Snow is having some trouble reaching the ground currently, thanks to dry air in the middle and lower levels of the atmosphere. Radar is depicting a large amount of virga – or evaporating precipitation – throughout Northern NJ and Southeast NY. These areas are likely to continue to remain dry, with only very light snowfall at times as the atmosphere gradually moistens this afternoon.

Read more

Miguel Pierre

1/14 AM All Zones Update: Light Wintry Precipitation for Some Areas Today

/by

A weak wave of low pressure appears to still just be nuisance in our region. Overnight models showed precipitation reaching further north into the region. But this morning, latest hi-resolution models have cut-back on the northern extent and amount of precipitation again. As dry air cause by confluence and high pressure causes precipitation to evaporate as it moves northward.

It still appears that some snow showers will around over parts of the region today with temperatures rising into lower to middle 30s. A period of steadier light snow may still possible, especially over Central NJ and Southern NJ. However, boundary level temperatures may support some sleet or rain mix in these areas as well. Many urban and coastal areas including New York City, may surface or ground temperatures to support much accumulation. So we generally expecting snowfall amounts to be under 2” for the region, with many areas most likely seeing just a 0.5” or less .

Read more

John Homenuk

PM All Zones Update: Wintry precipitation slides south

/by

Fair and relatively mild weather remained in place this afternoon throughout the majority of the forecast area. Temperatures in the 40’s were fairly common and a mix of sun and clouds made for a pleasant day. A more complex situation will develop from later tonight into Saturday, however, as a temperature gradient to our southwest shifts towards the East Coast.

Colder air will move into the Northeast tonight and into Saturday morning with a very impressive surface high pressure area shifting over New England. Precipitation along the temperature gradient in the Mid Atlantic states will fall as a wintry mixture — with freezing rain, sleet, and rain all possible by Saturday afternoon.

Read more