March may come in like a lion…a cold lion…as about 2/3rds of the nation will be well below normal for early March with the cold wave extending from the Rockies to the New England coastline and to the Gulf coast. In addition, the calendar turn from February to March will be accompanied by an active weather pattern with multiple waves of energy and an accumulating snow threat in the I-95 corridor late tomorrow night/early Friday and another wintry event possible late in the weekend.
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Winter is not going to give up without a fight despite what the groundhog predicted a few weeks ago. The calendar turns from February to March this Friday and the new month will begin with an active pattern to include additional cold air outbreaks and some snow threats. The first threat of snow will actually take place later tonight in the northern part of the Mid-Atlantic region as a “clipper-like” system drops southeastward across the Great Lakes. Snow showers could reach into the northern suburbs of the Philly metro region (e.g., Upper Bucks County) as this system passes by to our north, perhaps mixed with a bit of sleet or freezing rain. Another system could generate some snow here late Thursday night/early Friday morning – just as we begin the month of March - and it could even have an impact on the Friday AM commute. A cold air outbreak is likely to arrive in the Mid-Atlantic region on Sunday and low pressure may form near the Southeast US coastline right along the cold frontal boundary zone. This could result in another wintry precipitation event from late Sunday into Monday with the chance of snow or a wintry mix. The first full week of March will be well below-normal in much of the nation including the Mid-Atlantic region.
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Winter is not going to give up without a fight despite what the groundhog predicted a few weeks ago. The calendar turns from February to March this Friday and the new month will begin with an active pattern to include additional cold air outbreaks and some snow threats during the next week to ten days. The first threat of snow will take place tomorrow night in the northern part of the Mid-Atlantic region as a “clipper-like” system drops southeastward across the Great Lakes. Another relatively weak system could generate some snow in the DC-to-Philly corridor late Thursday night/early Friday – just as we begin the month of March. A cold air outbreak is likely to arrive in the Mid-Atlantic region on Sunday and low pressure may form near the Southeast US coastline right along the cold frontal boundary zone. This could very well turn into the most important threat of all for snow in the Mid-Atlantic region as signs point to a northward push of moisture along the east coast late Sunday into Monday with fresh, cold air in place. Finally, as a vigorous wave of upper-level energy drops into the Great Lakes region early next week, the another system could develop near the east coast, but it is certainly too early to say if that will come close enough to the Mid-Atlantic to produce snow.
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An active weather pattern is in store for the Mid-Atlantic region for the next week or so. High pressure will edge into the region today and this will cause a relaxation in the pressure gradient and noticeably less wind compared to Monday. A fast moving low pressure system will cross the Ohio Valley late tonight and early Wednesday and spread clouds into the Mid-Atlantic region and snow showers are possible late tomorrow and tomorrow night; primarily, in the northern suburbs (e.g., Bucks County). Another disturbance will head our way by early Friday and this system can bring us some snow as we end the work week. Looking ahead to the weekend, it’ll turn a bit milder on Saturday with a chance of rain and then colder on Sunday and we'll have to watch moisture to our south that may try to push northward along the east coast as we end the weekend. Yet another system may try to ride up along the east coast by the middle of next week.
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A powerful storm over southeastern Canada is combining with strong high pressure over the Upper Midwest to create a very tight pressure gradient field today and this is leading to high winds gusts across the Mid-Atlantic region. Winds can gust into the 50-60 mph range and scattered power outages are possible given the well saturated grounds which can weaken root systems of trees. The air mass is quite chilly as we begin the new work week and it’ll feel much colder with the strong winds. After a calmer and sunny day on Tuesday, a couple of disturbances have to be watched for the mid-to-late week as they can throw some snow or rain our way.
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Mid-Atlantic/Northeast US/Midwest: A storm that has already been a news making event in the Southwest US for its unusual snowfall will undergo explosive intensification this weekend and continue to make news as it’ll have major ramifications across much of the rest of the nation. Low pressure is heading northeastward today from the southern Plains and towards the Great Lakes and it will generate blizzard conditions all along the way. This system has the potential to strengthen over a 36-hour period from around 999 millibars this morning to near 971 millibars by late Sunday and it can result in monthly record low pressure readings in parts of the Great Lakes region.
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Mid-Atlantic/Midwest/Northeast US: A storm that has already been a news making event in the Southwest US for its unusual snowfall will undergo explosive intensification this weekend and continue to make news as it’ll have major ramifications across much of the rest of the nation. Low pressure will pull out of the Southwest US early Saturday and begin to rapidly intensify as it starts a push to the northeast and towards the Great Lakes region where it will become an all-out blizzard. This system has the potential to strengthen over a 36-hour period from around 995 millibars (29.38 inches) early Saturday morning to near 973 millibars (28.73 inches) by late Sunday and it can ultimately result in monthly record low pressure readings in the Great Lakes region.
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A rapidly intensifying storm this weekend will become an all-out blizzard for the Great Lakes and it will have big implications for our weather here in the Mid-Atlantic region. Rain is likely to overspread the Philly metro region early tomorrow night and evolve into a real soaker by late tomorrow night - perhaps even with a rumble or two of thunder. The rain will taper off by mid-day on Sunday and then much milder air will flow northward up along the eastern seaboard on increasingly strong winds. In fact, Sunday afternoon could turn out to be quite a spring tease with temperatures climbing to near 60 degrees. However, the warmth will be rather short-lived and those increasingly strong winds on Sunday afternoon will intensify from Sunday night into mid-day Monday with potentially damaging wind gusts of 50-60 mph.
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A rapidly intensifying low pressure system will head towards the Great Lakes region this weekend from the southern Plains and it could very well become a news making event with wide ranging ramifications over a large area. This system has the potential to deepen to around 978 millibars (28.88 inches) or so by the time it reaches the Great Lakes early Sunday which may be close to monthly record low pressure values for portions of Michigan. Blizzard conditions are likely to accompany this powerful storm system this weekend over the Upper Midwest and Great Lakes. Farther east, rain will spread northeastward from the Mississippi and Tennessee Valleys and into the Mid-Atlantic region later Saturday and continue into early Sunday. Once the rain ends on Sunday, temperatures have a chance to spike to 60 degrees or higher in the DC-to-Philly-to-NYC providing us with a spring tease, but the warm up won’t last too long as colder air returns for the early part of next week.
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It’ll turn noticeably milder today following yesterday’s wintry event and high pressure will build into the region and control the weather around here through Friday. Very strong low pressure will move across the Great Lakes this weekend and bring us rain from later Saturday into early Sunday. Once the rain pulls away on Sunday, temperatures could soar to 60 degrees on Sunday afternoon, but the warm up will be brief as colder air returns for the early part of next week.
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