A bit of a tricky situation today as we begin the new work week as there is likely to be quick burst of snow possibly mixed with sleet that can result in some small accumulations before milder air pushes in to change the precipitation to plain rain. A frontal system will slide through the region today with high pressure situated off the east coast and it’ll likely be just cold enough at the start for snow to fall and perhaps even accumulate a small amount. A southerly flow on the back side of the high will boost afternoon temperatures to above freezing causing any snow that falls to change to plain rain across the region. A clipper system to the northwest on Tuesday could produce a snow shower around here and the rest of the week looks rather quiet.
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The new work week will begin with a bit of a tricky situation as there is likely to be a quick burst of heavy snow in the DC-to-Philly-to-NYC corridor possibly mixed with sleet at times - all as a strong cold frontal system slides to the east. Snow, possibly mixed with sleet, should arrive by the mid-morning hours on Monday in DC and in the mid-to-late morning hours across the Philly and NYC metro regions. Rapid accumulations are likely before a changeover to plain rain takes place later in the afternoon.
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In another long duration winter storm event, snow will tend to hang on today across eastern Pennsylvania, New Jersey and New York City and there can be small accumulations adding onto yesterday’s totals. A stretched-out wave of energy aloft is grinding its way to the east coast and it is generating enough lift in the atmosphere to produce snow in this part of the northern Mid-Atlantic region. High pressure takes back control this weekend, but it’ll remain on the cold side and the breeze will pick up noticeably.
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The day will start off with freezing drizzle in most areas and as another low pressure area pushes northeast along a frontal system, sleet and snow will break out later this morning and last well into the afternoon. Additional accumulations of 1-3 inches are possible before the system winds down later in the day. High pressure takes over for the weekend, but then another low pressure area can bring us some snow or snow and rain combination on Monday.
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The latest winter storm continues to pound away at the Mid-Atlantic with lots of snow north of the Pennsylvania/Maryland border and lots of icing to the south of there. There have been intense snow bands in the region from southeastern Pennsylvania to central New Jersey during the past few hours resulting in a quick piling up of snow to as much as 8 inches in some spots. The precipitation will tend to slacken off this afternoon, but this latest winter storm will turn into another relatively long duration event with redevelopment of the precipitation by tonight and there can be some impacts into the latter part of the day on Friday.
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Snow will overspread the region later this morning as our next winter storm arrives and it can become heavy at times with quick accumulations likely. The snow can mix with sleet late in the day and the precipitation may actually lighten up for a brief time at day’s end and early tonight. Precipitation will then re-develop later tonight likely as a mix of sleet and snow and it can actually change back to all snow on Friday before precipitation winds down in what will turn out to be another rather long duration event. Snowfall accumulation estimates of 4-8 inches for the NYC metro region with isolated higher amounts possible N/W and there can be an icy buildup during the second half of the storm.
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A significant winter storm will impact the Mid-Atlantic region on Thursday and Thursday night and it is likely to develop into a rather long duration event and last well into the day on Friday. Snow should break out early tomorrow morning in the DC and Philly metro areas and by the late morning hours in New York City. The snow can come down hard for a few hours beginning shortly after its arrival time in the I-95 corridor. The precipitation may slacken off for a brief time later tomorrow into early tomorrow night, but more precipitation will re-develop tomorrow night likely as a wintry mix and this can change back to all snow on Friday.
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Attention now turns to the next storm system and this one is likely to generate significant accumulating snow in the NYC metro region and some ice as well. Snow likely breaks out by late morning to mid-day on Thursday during the 9AM-1PM time period and it can come down hard for awhile before mixing with or changing to sleet late in the day. Accumulations of 4-8 are likely before any changeover to sleet and there can be isolated higher amounts. Snow or a mix of snow and sleet will continue tomorrow night and there can even be occasional snow, sleet and/or freezing rain well into the day on Friday as this will likely turn out to be a long duration event. This low pressure system will take a track farther to the east compared to Monday’s storm and this track will help to keep a cold air mass in place with temperatures generally at or below the freezing mark.
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With the passage of one storm system in the overnight hours, attention to those in the Mid-Atlantic region will now turn to the next storm system and this one is likely to generate significant snow and/or ice for the DC-to-Philly-to-NYC corridor with several inches on the table. The next storm will take a track farther to the east compared to last night’s system and this will help to keep in place a cold air mass that arrives in the overnight hours. This cold air mass will be anchored by strong high pressure to the north and low-level temperatures are likely to remain at or below freezing during much of the upcoming event in the immediate I-95 corridor – virtually assuring a buildup of snow and/or ice.
Elsewhere, historic and dangerous cold continues today across much of the central US. Several sites have set their all-time low temperature records and many others have experienced their lowest temperatures ever recorded in the month of February. In addition to the extreme cold, snow and ice has accumulated all the way down to the Gulf coastal region of Texas. In fact, nearly three-quarters of the US is now covered by snow which is the highest amount ever recorded since this kind of data began to be collected in 2003.
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One storm system will push away today and attention will turn to another system that will impact the region from late Wednesday night into early Friday. High pressure will build over New England on Wednesday and act as an anchor for a cold air mass in the Mid-Atlantic region. As a result, the chance of accumulating snow at the onset of the next storm system will be quite high in the NYC metro region from later Thursday morning into the mid-day hours. The snow is likely to mix with or change to sleet and/or freezing rain on Thursday night, but not before possible significant accumulations. Stay tuned…something to closely monitor next couple of days.
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