A deep upper-level trough continues to sit and spin over the Northeast US and another wave of energy will rotate through today causing more instability in our area. As a result, the breeze will remain quite noticeable and there can be a few PM rain and/or snow showers. It’ll turn a bit colder in the overnight hours and temperatures on Friday are likely to hold near 40 degrees for afternoon highs. After a relatively quiet weekend, another storm will have to be monitored as it crosses the country. As we begin the new week, low pressure will be headed towards the Ohio Valley from the middle of the country. It is likely to spin off a secondary low pressure off the Mid-Atlantic coastline which will likely become a slow-mover and this could produce rain, ice and/or snow in our region from late Monday night into Wednesday.
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If you had a chance to bet on the over/under for the number of nor’easters this month, I hope you took the over. There have been three nor’easters in the past ten days or so and there is the threat for another one around Tuesday of next week. In fact, as we approach the middle of March, it is hard to find any sign of sustained spring-like weather for the Mid-Atlantic/Northeast US and the colder-than-normal temperature pattern is looking like it will go right into early April. In addition, instability in the upper-atmosphere will bring much of the region snow showers this afternoon with isolated snow squalls and perhaps a repeat tomorrow afternoon.
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A deep upper-level trough is now sitting over the Northeast US and short-waves of energy will rotate through it over the next couple of days. One such wave in the upper atmosphere will push through the area later today and it will generate strong winds around here and possible afternoon snow showers. In addition, there is the chance for isolated heavier snow squalls to form this afternoon any one of which could produce a quick small accumulation. Another wave of energy will pass through later tomorrow and it could spark a few rain and/or snow showers in the region.
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Strong low pressure is moving northeastward this morning from a position well off the New Jersey coastline to a position later today down east of Maine. Any lingering snow in the metro region this morning should wind down and the storm’s biggest impact later today will be across eastern Massachusetts and Maine where blizzard conditions could take place. On the backside of the storm, we’ll stay quite blustery and cold into tomorrow and as upper-level trough intensifies, we’ll have to watch for the possibility of snow shower activity tomorrow afternoon, maybe even an isolated snow squall or two.
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Low pressure is currently developing off the Carolina coastline and it will intensify quite rapidly over the next 24 hours or so as it heads northeastward to a position well off the New Jersey coastline by early tomorrow and then east of New England by tomorrow night. Given the fact that this system will not hug the coast like some recent storms, its impact will be comparatively reduced in the DC-to-Philly-to-NYC corridor. However, snow is still likely to break out late today or early tonight in the Philly-to-NYC corridor and it could even extend to areas to the east and northeast of the District of Columbia (e.g., Baltimore, Anne Arundel County and the Delmarva Peninsula).
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Strong low pressure will head towards the Carolina coastline this morning and then take a turn to the northeast and intensify along the way as it heads to a position off the NJ coastline by early Tuesday and then off of eastern New England by late Tuesday. It looks like the storm will come close enough tonight to generate some accumulating snow for the NYC metro region with 2-4" likely by morning and there can be slippery spots for the morning commute. As with the prior coastal storms, the impact looks greater over the next 24 hours or so as one moves northeast along the coastline and eastern New England, for example, is likely to get much more significant snow. Looking ahead, a vigorous disturbance could cause snow showers here on Wednesday - perhaps even a heavier snow squall.
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Our recent cold and stormy March weather pattern continues this week with yet another ocean storm to deal with in the Mid-Atlantic/Northeast US. Strong low pressure will head towards the Carolina coastline on Monday morning and then take a turn to the northeast and intensify along the way as it heads to a position off the NJ coastline by early Tuesday and then off of eastern New England by late Tuesday. It looks like the storm will come close enough to the Mid-Atlantic coastline to generate some snow for the DC-to-Philly-to-NYC corridor, but exactly how close it comes to the coast is still somewhat of an open question and the precise track will help determine if this is a nuisance snow or something more significant. As with the prior coastal storms, the impact looks greater as one moves northeast along the coastline so that, for example, DC likely gets impacted less than NYC, and it could become an all-out blizzard for eastern New England.
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Strong low pressure will head towards the Mid-Atlantic coastline on Monday and it could result in accumulating snowfall for the DC-to-Philly-to-NYC corridor. In addition to the persistent high-latitude blocking to our north, two key players in the upcoming storm threat will be separate waves of energy in the northern and southern branches of the jet stream. These waves will ultimately consolidate into one deep upper-level trough and if the phasing takes place quick enough then a strong storm would indeed impact the DC-to-Philly-to-NYC corridor.
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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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