Low pressure now off the Mid-Atlantic coastline pulled in colder air from the northwest during the overnight hours and the morning will start off with lingering clouds in the I-95 corridor. Drier air will bring some sunshine to the area later today, but it will remain quite windy and much colder-than-normal for this time of year. The weekend will start off on the chilly side, but it’ll turn milder on Sunday and next week looks noticeably warmer than this week.
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The month of March has been unusually dry in the Mid-Atlantic region, but a soaking rain event will begin this morning as strong low pressure pushes into the Ohio Valley. This same storm system contributed to the first significant severe weather outbreak of the season on Wednesday and severe weather will be a threat today from Georgia to Virginia. The strong low pressure system will shift in its heretofore northeastward track and take a turn to the south and east later in the day as it runs into an impressive upper-level blocking pattern across southern Canada. At the same time, strong high pressure will build into southeastern Canada today and it will be anchoring quite a cold air mass for this time of year. As the storm pushes to the south and east tonight, the cold air mass will follow suit and rain will change to snow in a northwest-to-southeast fashion. By early tomorrow, low pressure will be situated off the Mid-Atlantic coastline and a mixing with or a changeover to snow is possible all the way down into the DC-to-Philly-to-NYC corridor. After this storm system pushes away later tomorrow, cold and dry air will dominate the scene right through the first half of the upcoming weekend, but it'll turn milder on Sunday.
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A very active weather pattern for the eastern half of the nation during the next few days which will include the first significant severe weather outbreak of the season, the first soaking rain event in weeks across the Mid-Atlantic/Northeast US, and a changeover of rain-to-accumulating snow in many areas. Severe thunderstorms later today and tonight in the Deep South/Tennessee Valley will be capable of producing torrential rainfall, large hail, damaging wind gusts and tornadoes. A particularly dangerous situation is likely to develop later today in the Mississippi/Alabama region where numerous ingredients are coming together for high probabilities of severe weather. The severe weather threat will shift eastward to the Carolinas and Virginia on Thursday and continue into early Friday. The same storm system that will be contributing to the severe weather outbreak will result in a soaking rain event for the Mid-Atlantic/Northeast US on Thursday and Thursday night – the first significant rainfall in weeks in many of those locations. As colder air wraps into the low pressure system later tomorrow night, rain will change to snow in a northwest-to-southeast fashion and there can be snow all the way down into the DC-to-Philly-to-NYC corridor by early Friday.
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The month of March has been unusually dry in the Mid-Atlantic region, but a soaking rain event will begin on Thursday and continue into early Friday. High pressure takes control again today we’ll have a bit of a warm up compared to the chill of the past couple of days. A strong low pressure system will then push into the Ohio Valley on Thursday and ultimately, to a position off the Mid-Atlantic coastline by early Friday. As a result, rain should push into the area early Thursday and continue off and on into early Friday. As colder air filters in from the northwest, there is a good chance that the rain mixes with or changes to snow by early Friday before the precipitation event winds down in the I-95 corridor. A cold start to the weekend will follow as Canadian high pressure builds back into the northeastern quadrant of the nation. Looking ahead, warmer weather returns early next week with highs back up in the 60's.
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It has been an unusually dry month of March so far in the Mid-Atlantic region with zero precipitation reported in DC, Philly and NYC. The impact of the dry spell has actually been made worse with an extremely dry air mass in recent days featuring abnormally low dew point temperatures of below zero – indicative of very low moisture content in the atmosphere. Strong low pressure will bring this dry stretch to an abrupt end later in the week with significant precipitation from Thursday into Friday. The rain that falls on Thursday and Thursday night in the Mid-Atlantic region can be moderate-to-heavy at times and there is a chance that it changes briefly to snow on Friday as colder air wraps into the system.
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Weak low pressure is pushing into the Mid-Atlantic region and it could produce a light wintry mix from later today into tonight - not at all a significant precipitation event. High pressure will take control again at mid-week we’ll have a bit of a warm up compared to the chill of yesterday and today. A stronger low pressure system will impact the region from Thursday into Friday - much more of a significant precipitation event - with rain on Thursday and Thursday night that can change briefly to snow on Friday. This late week event will be the first decent precipitation we've had in the region during the month of March.
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It is now the middle of March and the spring equinox is less than a week away, but winter is still hanging on in many portions of the nation. There are actually two chances of frozen precipitation this week in the Mid-Atlantic/Northeast US and the past couple of days has seen a blockbuster snowstorm in the Rockies that indeed turned out be one of the all-time greats in places like Denver, Colorado and Cheyenne, Wyoming.
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High pressure to our north continues to have an influence on the weather in the Mid-Atlantic region as we begin the new work week with cold and dry conditions. Temperatures are starting the day in the upper 20's and dew points are generally in the single digits - indicating this is an extremely dry air mass. Weakening low pressure to our west is push towards the Mid-Atlantic region and it should hold together enough to produce a light wintry mix here from Tuesday into Tuesday night and small snow accumulations are possible. High pressure will take control again at mid-week we’ll have a bit of a warm up compared to the chill of today and tomorrow. A stronger low pressure system will likely impact the region from Thursday into Friday with rain that can change to snow on Friday.
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The warm up that began here on Tuesday likely reached its peak yesterday with temperatures reaching the 70 degree mark and today will remain unseasonably warm; however, colder air is on the way for the NYC metro region. Low pressure will track northeast across the Great Lakes today and will drag a cold front through the region paving the way for a much cooler weekend. In fact, temperatures later tonight will drop into the low-to-mid 30's to go along with a strong NW wind and they'll hold at or below 50 degrees for afternoon highs on Saturday. Another low pressure system could produce a bit of precipitation around here early next week and it could be just cold enough for a bit of a wintry mix. One final note, clocks will need to be turned ahead early Sunday morning as we switch back to daylight savings time.
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The warm up that began here on Tuesday will likely reach its pinnacle in temperatures this afternoon with highs near the 70 degree mark. A broad southwesterly flow of mild air continues today across a large portion of the eastern US on the backside of a strong high pressure system that is drifting over the western Atlantic Ocean. Low pressure will track northeast across the Midwest on Friday and it will drag a cold front through this area tomorrow night paving the way for a much cooler weekend in the Mid-Atlantic region. In fact, temperatures this weekend are likely to hold at or slightly below 50 degrees for afternoon highs – quite a change from 70 degrees expected this afternoon. One final note, clocks will need to be turned ahead early Sunday morning as we switch back to daylight savings time.
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