An active weather pattern will continue this week with a strong storm system wreaking havoc on much of the nation. Low pressure will intensify and push into the central states on Tuesday with blizzard conditions likely in the Northern Plains and Upper Midwest. Meanwhile, in the storm’s warm sector, severe weather could break out later tomorrow and tomorrow night in the Lower Mississippi Valley including the possibility of tornadoes. The initial primary low pressure system will grind to a halt as it reaches the northern Great Lakes due to a strong blocking pattern in the atmosphere over central/northeastern Canada. A secondary storm will likely then develop near the Delmarva Peninsula later in the week and this could result in a wintry mix at the onset of the event on Thursday in the DC-to-Philly-to-NYC corridor followed by plain rain.
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An active weather pattern will feature a couple of storm systems to deal with between later this weekend and the end of next week. The first low pressure system will form over the Midwest on Saturday and then push its precipitation into the Mid-Atlantic region on Sunday. There may be enough cold air around for some snow in some of the interior higher elevation locations. A stronger storm system will wreak havoc across much of the nation next week with a possible severe weather outbreak on Tuesday in the Lower Mississippi Valley and a blizzard in the Northern Plains, This system could impact the Mid-Atlantic later next week and frozen precipitation may be in the mix. We’ll have to monitor the possibility of re-development of surface low pressure near the eastern seaboard as the initial primary low heads into strong blocking in the atmosphere over Canada.
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The overall weather pattern across the nation will be quite active from later this weekend through next week with multiple storm threats. One low pressure system will form over the Midwest on Saturday and then its precipitation shield will push into the Mid-Atlantic region on Sunday. Enough cold air will be around for snow on Sunday in much of the northern Mid-Atlantic with accumulations of up to a few inches likely in some interior and higher elevation locations. Another storm system will wreak havoc across much of the nation next week with a possible severe weather outbreak late Tuesday/Tuesday night in the Lower Mississippi and Tennessee Valleys and blizzard conditions across the Northern Plains. This system and its precipitation field likely reaches the eastern states later next week and frozen precipitation will likely be in the mix: especially, if re-development of a surface low takes place near the east coast which could make for more of a serious winter storm threat in the Mid-Atlantic. The evolving pattern should feature more sustained cold air in the eastern states following that mid-to-late week storm system and “cross-polar flow” later this month will assure some very cold air masses reaching into North America.
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An active weather pattern will bring us multiple storm systems to deal with into the middle of next week. One system will push out of the Midwest on Saturday and head to the Mid-Atlantic with precipitation from Sunday into early Monday. As this system drops south and east to the coastline late in the weekend, it can draw enough cold air for a combination of snow and rain; especially, across interior, higher elevation locations of the Mid-Atlantic. Another system can spawn a severe weather outbreak around next Tuesday in the Lower Mississippi Valley, and then its precipitation field will likely reach the Mid-Atlantic at the middle of next week. It may be cold enough for some frozen precipitation to be mixed in with that system as well.
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The overall weather pattern will be quite active from this weekend through next week with multiple storm threats in the northeastern US and a possible severe weather threat around Tuesday of next week in the Lower Mississippi Valley. Cold air is trying to work its way into the northeastern US on a consistent basis, but likely won’t be able to until later next week. Nonetheless, there will be enough cold air around for a likely Sunday/Monday storm threat to at least produce a chance of accumulating snow in the northeastern states. Another storm system will likely arrive in the eastern states by the middle of next week and there may be enough cold air around for some frozen precipitation at the onset in portions of the Northeast US. More sustained cold air will follow later next week.
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It remains unsettled today in the Mid-Atlantic region with some patchy fog, drizzle and a couple of showers are possible. It also is quite mild and afternoon highs in the upper 50’s. A cold front passes through the area tonight and it turns slightly cooler on Thursday. Low pressure could produce some rain showers here on Friday night and perhaps a touch of snow mixed in, but little or no accumulation is expected.
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A couple of frontal systems will influence our weather during the next couple of days and occasional rain or drizzle will be the result. First, a warm front will head in this direction from our southwest and occasional rain or drizzle will fall through tonight and some patchy fog is possible as well. It turns milder on Wednesday following the passage of the warm front, but a second front can cause additional showers in the PM hours. It turns colder late in the week and low pressure could produce some rain here later Friday which can mix with or change to snow by the early part of the upcoming weekend.
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A couple of frontal systems will influence the weather in the Mid-Atlantic region during the next few days. First, a warm front will head in this direction from our southwest and it should be able to produce some shower activity later tonight and on Tuesday. A cold front will approach on Wednesday and it also can result in some shower activity with cooler air to follow for the late week.
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It’ll remain chilly today in the New York City metro region and dry as well as high pressure remains in control. Clouds increase tonight ahead of the next frontal system and rain is likely here on Saturday. In addition to the rain, it’ll become windy tomorrow and much milder with a broad southwesterly flow of air out ahead of the incoming frontal system. The back side of the front will feature colder, dry conditions again as we close out the weekend on Sunday.
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A strong cold front passed through the eastern states late Wednesday and much colder air has pushed in on stiff NW winds. This cold shot will be somewhat short-lived, however, as the first half of the upcoming weekend will turn much milder once again in the eastern US as the next frontal system approaches with a broad southwesterly flow of air ahead of it. Looking ahead, high-latitude blocking will develop in coming days and this will aid in a more sustained cold weather pattern in much of the nation with impact in the eastern states coming after about the 7th or so. In addition, the upcoming colder-than-normal weather pattern is likely to become more active before we get to the middle of the month and the period between about the 10th and 13th may be quite volatile near the eastern seaboard.
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