There have been two major coastal storms in the Mid-Atlantic/Northeast US during the past several days and there is the chance for another significant one early next week. After a couple of relatively quiet days, multiple short-waves of upper-level energy will slide towards the Tennessee Valley by Sunday and begin to consolidate resulting in the formation of surface low pressure in the Southeast US early next week. This storm will then intensify as it begins to head towards the Mid-Atlantic coastline. It is a bit too early to tell exactly how far up the coast this system will travel, but the overall weather pattern certainly allows for an impact on the DC-to-Philly-to-NYC corridor in the late Sunday night/Monday time period.
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The colder-than-normal pattern that we have experienced in recent days will continue for at least the next several days and there are signs that much of the remainder of March will remain below-normal on average. An upper-level disturbance will pass nearby today and generate some gusty winds and perhaps a couple of snow and/or rain showers in the I-95 corridor. The next significant coastal storm threat comes late Sunday night and Monday when low pressure in the Southeast US may attempt to come up along the east coast - still a bit too early to say for sure if it'll ever make it this far north. However, the overall weather pattern does allow for the type of scenario in which DC, Philly and NYC are impacted significantly by yet another strong coastal storm. Stay tuned.
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There have been two major coastal storms in the Mid-Atlantic region and Northeast US during the past six days and there is the chance for another one early next week. After a few relatively quiet days, a couple of waves of upper-level energy will slide towards the Tennessee Valley and Southeast US by the latter part of the weekend. This combination of energy will help to set off the formation of a strong surface storm near the Carolina coastline by late Sunday night or early Monday morning. At this time, the storm will then begin a turn up the east coast; however, it is just a little early to say how far north it will go. Many computer forecast models tend to push the system to the south and east of the DC-to-Philly-to-NYC corridor, but the overall weather pattern and teleconnections (e.g., -NAO) certainly warrants the close monitoring of this system over the next few days.
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There have been two major coastal storms over the past five days or so in the Mid-Atlantic region and our stormy March weather pattern is not over yet. As far as temperatures are concerned, it looks like it’ll remain below-normal on average for the next several days and that pattern might even last through much of the remainder of the month. In terms of storm threats, the next one of concern will move into the Southeast US later this weekend. It looks like it will become a strong storm and ultimately ingest plenty of Gulf of Mexico moisture. Some computer model forecasts then shunt this system just to our south and east early next week, but I think this overall pattern certainly allows for the possibility of a left turn up the coast...stay tuned.
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Low pressure will develop intensify today as it rides up along the east coast to a position near the central New Jersey coastline by later in the day. Most of the intensification of this system will take place to our northeast today which will limit its impact around here; however, there still can be some additional snow and rain. The precipitation winds down later today and then we’ll have colder-than-normal weather for the latter part of the week. Another strong storm will have to be watched for the Sunday/Monday time frame
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An intensifying and very dynamic coastal storm on Wednesday will have a major impact on the I-95 corridor from Philly-to-NYC-to-Boston with significant accumulations of snow in suburban areas to the north and west of these metro regions. In the big cities, the precipitation will likely be mixed for a longer period than in the suburbs and this should limit slightly overall accumulations in those particular spots. In the DC metro region, much of the intensification with this coastal storm will take place to the northeast and this will limit the overall impact in that area, but some accumulating snow is still on the table including in the overnight hours. The snow will be of the heavy, wet variety and, unfortunately, this can lead to a fresh round of power outages.
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An intensifying coastal storm on Wednesday will have a major impact on the I-95 corridor from Philly-to-NYC-to-Boston with significant accumulations of snow in suburban areas to the north and west of these metro regions. In the big cities, the precipitation will likely be mixed for several hours during this event and this would limit somewhat overall accumulations in those particular areas. As far as the DC metro region is concerned, much of the intensification with this coastal storm will take place to the northeast and this will limit the overall impact in that area, but some accumulating snow is still on the table. The snow will be of the heavy, wet variety and, unfortunately, this can lead to a fresh round of power outages.
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Low pressure will develop along the Carolina coastline tonight and then intensify rapidly as it rides up along the Mid-Atlantic coastline on Wednesday. Precipitation will break out later today in the form of rain, but as colder air gets wrapped into the system and “dynamical cooling” develops, the rain will mix with snow and likely continue as a mixture on Wednesday. There is the chance, however, for all snow in some spots for part of the time during this event. The intensification of this coastal storm will take place primarily to our north and east on Wednesday and this combined with the mixed nature expected of the precipitation around here will substantially limit snowfall potential compared to areas north of the PA/MD border. The snowfall estimate for the DC metro region is for a coating to an inch or two with the higher amounts well to the northeast of DC and lower amounts on the southwestern side, but any small change in the timing of the intensification and the storm track could have an impact on this range.
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High-latitude blocking over northern Canada/Greenland is very strong today and it will stay in place for the next several days during a stormy period for the Mid-Atlantic region. One coastal storm will intensify along the Mid-Atlantic coastline on Wednesday and likely bring a significant snow accumulation to much of the I-95 corridor from Philly-to-Boston; especially, in the northern and western suburbs of the big cities with 6+ inches on the table. Very chilly air for this time of year will follow the mid-week mauler and then another storm may threaten the Mid-Atlantic region next Sunday/Monday.
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Strong high-latitude blocking remains in place to our north and there will be two more storms to deal with in the Mid-Atlantic region over the next week or so. One storm will push towards the North Carolina coastline on Tuesday night and then intensify as it rides up along the coastline on Wednesday. Precipitation is likely to begin as rain in the DC metro region from this next coastal storm late in the day on Tuesday, but then as colder air gets wrapped into the system and “dynamical cooling” develops, the precipitation is likely to mix with snow at times overnight and continue into the day on Wednesday. With mixed precipitation expected for much of the storm, snowfall accumulations should be limited to in the DC metro region to an inch or less in most areas. Looking ahead, yet another storm is likely to impact the region in the Sunday/Monday time frame and this could be a real big one; however, it is way too early to say if this will feature rain or snow.
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