12:30 PM (Tues) | *Temperatures still hovering near freezing in many areas…watch for slick spots on untreated surfaces as wintry mess continues…late week cold blast...late weekend snow threat*

January 26, 2021Paul Dorian

A wintry mess of snow, sleet, freezing rain, and/or plain rain continues in parts of the Mid-Atlantic region at mid-day and temperatures remain near the freezing mark in many locations. As a result, there can be slick spots this afternoon and evening on untreated surfaces in suburban locations along the I-95 corridor even as the precipitation winds down. After a drier and quieter day on Wednesday, low pressure will intensify off the Carolina coastline on Thursday and winds in the DC-to-Philly-to-NYC corridor will pick up noticeably as a very cold air mass pushes in from the northwest. The end of the week and the beginning of the weekend will indeed feature some of the coldest air yet this season and then attention will turn to the next storm threat which could bring snow by late in the weekend or the early part of next week.

11:30 AM (Mon) | ***Wintry mess on the way for the Mid-Atlantic with snow, sleet, and freezing rain… slick spots possible and small accumulations…watch for burst of heavier snow in DC region***

January 25, 2021Paul Dorian

A wintry mess of snow, sleet, freezing rain, and plain rain is coming to the Mid-Atlantic region as low pressure heads from the south-central states to the Ohio Valley. A dense dry and cold air mass is in place across the Mid-Atlantic region and it will be reluctant to give up its ground as moisture pushes in this direction from the west-to-southwest. As a result, frozen precipitation is a good bet during this event in the entire DC-to-Philly-to-NYC corridor and the progression of the moisture field to the northeast will be quite slow. The arrival time in the DC metro region should be 4 or 5 pm and there is the threat for a burst of heavier snow by early tonight - an hour or two after the onset of the mixed precipitation. Arrival time in the Philly area is late this evening and precipitation will probably hold off until tomorrow morning for the NYC metro region.

Looking ahead, the active weather pattern will continue and another storm is going to intensify near the Carolina coastline Wednesday night/Thursday and its impact in the DC-to-Philly-to-NYC corridor is likely to be limited. Yet another storm could travel across the country this weekend and perhaps have an impact in the Mid-Atlantic region in the Sunday/Monday time frame.

11:45 AM | **Wintry mess of snow, ice, and rain coming to the Mid-Atlantic with small accumulations…late week storm headed to the Carolinas with little impact likely in DC, Philly, NYC**

January 24, 2021Paul Dorian

A wintry mess of snow, sleet, freezing rain, and rain is coming to the Mid-Atlantic region early this week as low pressure heads from the central states to the Ohio Valley. A cold, dry air mass will still be in place on Monday morning when moisture begins to head in this direction from the west-to-southwest. This dense air mass will be reluctant to give up its ground; consequently, the northeastward progression of the precipitation along the I-95 corridor will be rather slow and some frozen precipitation is a good bet. In addition, the moisture field will tend to break apart some by the time it reaches areas to the north of the PA/MD border. Arrival time in the DC metro region is likely mid-to-late afternoon on Monday, late evening in Philly, but not until early Tuesday in NYC. A late week storm is likely to head towards the Carolina coastline with little impact likely in the DC-to-Philly-to-NYC corridor.

1:00 PM | ***Winter storm in the Mid-Atlantic from later Monday into Tuesday…primarily snow, ice north of PA/MD border…ice, rain, and maybe some snow south of there…second threat later next week***

January 22, 2021Paul Dorian

A frontal passage later today will usher in a very cold, dry air mass for the weekend in the Mid-Atlantic region with highs confined to the 30’s on both days all along the I-95 corridor. This cold, dry air mass will still be in place on Monday morning when moisture begins to head in this direction from a low pressure system over the Ohio Valley. A second low pressure area will form off the Mid-Atlantic coastline by early Tuesday and the combination of these two systems will result in a wintry mess in the Mid-Atlantic region from later Monday into Tuesday.

In areas to the north of the PA/MD border, snow and/or ice are likely to be the primary precipitation types and accumulations of up to a few inches are on the table. To the south of the PA/MD border, there is likely to be a mix of ice and rain with some snow possible at times and small accumulations are possible. Another storm could impact the Mid-Atlantic region later next week; however, its northward reach is still uncertain this far in advance and it could be suppressed to the south. Looking way ahead, there can be yet another storm threat a few days later as the active weather pattern continues into the early part of February.

11:40 AM (Thurs) | ***Winter storm threat continues for early next week in the Mid-Atlantic…second threat comes later in the week…”snow drought” for DC, Philly, NYC likely coming to a decisive end***

January 21, 2021Paul Dorian

Philadelphia and New York City received traces of snow early yesterday as an upper-level wave of energy passed overhead, but there has not been anything significant in terms of snow in these two metro regions - nor in the Washington, D.C. area - since the middle of December. This “snow drought” in the DC-to-Philly-to-NYC corridor may come to a rather dramatic end over the next ten days or so. One winter storm can impact the Mid-Atlantic region from later Monday into Tuesday and then a second threat exists for later next week. There have been numerous threats of snow in recent weeks for the I-95 corridor and all have fizzled out, but there is perhaps better cause for optimism this time around for snow lovers in the I-95 corridor.