High pressure will remain in control of the weather in the Mid-Atlantic region into tonight with dry conditions and then a weak “clipper” could produce a couple of rain and/or snow showers later night into early Wednesday. High pressure will then resume control for later Wednesday and Thursday and a weak front can generate a couple of showers on Friday morning.
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My fellow Pennsylvania prognosticator, Punxsutawney Phil, and I have a little bit of a disagreement about the coming six weeks as he has predicted an early spring while I believe there is plenty of winter left across much of the nation and it will not be an early spring for most…hopefully, he turns out to be right. In terms of temperatures, after a very cold middle of the month of January, a “January thaw” developed that brought temperatures to above-normal levels for much of the last ten days or so. The month of February is likely to start off warmer-than-normal across much of the central and eastern US and colder-than-normal out west. However, the overall temperature pattern looks to change by the middle of the month to colder-than-normal for much of the nation and that change can take us right into the middle of March. Support for this kind of pattern change comes from an on-going stratospheric warming event and numerous teleconnection indices which can provide clues as to future weather patterns across the US based on what is trending in other parts of the world.
In terms of precipitation, an “El Nino enhanced” southern branch of the jet stream has already resulted in one powerful storm system for California that will now slide across the Rocky Mountain States to the southeastern US. A second and perhaps even more powerful Pacific Ocean storm will slam into the Golden State later this weekend and into the early part of next week. Several inches of rain will accumulate in California across low lying areas and tremendous snowfall in the higher elevation locations such as the Sierra Nevada Mountains. The Deep South and southeast US can experience severe thunderstorms later this weekend.
El Nino conditions in the tropical Pacific Ocean have gotten a “jolt” in recent days due to a burst of westerly winds and this sudden surge in strength will play a big role in the intensification of the southern branch of the jet stream. The phrase “atmospheric river” or “pineapple express” will be used quite often during the next couple of weeks as a powerful and relentless jet stream over the Pacific Ocean continues to inundate the US west coast with copious amounts of moisture.
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Low pressure pulls away from the coast today leaving us with plenty of clouds, windy and chilly conditions. High pressure takes control for tonight and tonight and then a weak “clipper” heads this way by Wednesday. That system can produce some rain and/or snow shower activity around here from late tomorrow night into early Wednesday morning before another high pressure system takes over for the late week.
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Much of this week will be quite mild across the region with daily highs near 60 degrees and little in the way of precipitation threats. The overall pattern is likely to change to much colder this weekend and there can be a high impact type of storm to deal with across the Rocky Mountain States.
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Low pressure pulls away from the coast today leaving us with plenty of clouds, windy and chilly conditions. High pressure takes control for tonight and tonight and then a weak “clipper” heads this way by Wednesday. That system can produce a couple of rain and/or snow showers around here from late tomorrow night into early Wednesday morning before another high pressure system takes over for the late week.
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Low pressure pushes away from the Mid-Atlantic coastline and it’ll be rather chilly on its backside across the Tennessee Valley. Milder conditions return by mid-week with high temperatures for much of the remainder of the week in the 50’s.
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Low pressure pulls away from the coast today leaving us with plenty of clouds, breezy and chilly conditions. High pressure takes control for tonight and tonight and then a weak “clipper” heads this way by Wednesday. That system can produce some snow shower activity around here from late tomorrow night into early Wednesday before another high pressure takes over for the late week.
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A light northeast flow of air will keep us mainly cloudy today and on the chilly side and there can will be occasional light rain or drizzle with patchy fog as well. Another storm system will impact the area with more rain during the second half of the weekend as one low pressure system (primary) heads into the Ohio Valley and a secondary will forms near the Mid-Atlantic coastline. While there will be little cold air around initially, strong high pressure will build into southeastern Canada and act as a cold air source. This is likely to result in a changeover from rain-to-snow across much of the interior, higher elevation locations of the northern Mid-Atlantic region and potentially, there can be a changeover in around here on Sunday night.
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The on-going pattern of moisture flowing northeastward from the Gulf of Mexico into the eastern US is not quite over with us yet. It looks like we’ll get another round of showers and thunderstorms around here from tonight into Saturday and some of the rain will be heavy at times. Drier weather takes hold on Sunday and continues into early next week with cooler temperatures as well.
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The week will end on a damp note with mostly cloudy skies, some drizzle and fog, and temperatures climbing into the 50’s. More rain is on the way for later in the weekend and it will turn cooler in the Mid-Atlantic region. One low pressure system (primary) will head into the Ohio Valley during the weekend bringing us more rain and then a secondary will form near the Mid-Atlantic coastline. While there will be little cold air around initially, strong high pressure will build into southeastern Canada and act as a cold air source. This is likely to result in a changeover from rain-to-snow across much of the interior, higher elevation locations of the northern Mid-Atlantic region and there is a slight chance for a changeover all the way down to the I-95 corridor later Sunday night.
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