The polar jet has dominated the scene in recent weeks across North America resulting in numerous Arctic air masses being transported from western Canada into the northeastern states, but changes are underway as the sub-tropical jet is now showing plenty of life. This changing weather pattern will result in milder conditions across the northeastern states and some much-needed precipitation across the western and southern states after an extended dry stretch. The rejuvenated sub-tropical jet stream is pouring moisture today into southern California while an intensifying surface low pressure spins just off the San Francisco coastline. This system will produce some rain in low lying areas of the Golden State during the next 24 hours or so and significant accumulating snow in the mountains of eastern California.
By the early part of the weekend, this same low-pressure system will re-emerge over the south-central states and Gulf moisture will feed into its southeastern flank. As such, the moisture field will expand - good news for the Deep South where it has been dry - and the risk of severe weather will likely be put back in play in some areas. This system will then move in a general eastward direction and it can have an impact on the Mid-Atlantic region by the latter part of the weekend with mixed precipitation on the table. Much milder weather will follow in Mid-Atlantic/Northeast US later next week after the passage of this storm system off the eastern seaboard.
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The overall weather pattern looks to favor mild weather for the Tennessee Valley, and temperatures today can reach all the way into the 70’s. The 60’s will be commonplace for the second half of the week, but it’ll become unsettled with the chance of showers from time-to-time.
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The overall weather pattern remains on the cold side for another day in the Tennessee Valley, but big changes are on the way. It’ll turn milder on Friday with highs well up in the 50’s and then the 60’s are likely by Monday and Tuesday could feature highs near the 70-degree mark.
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There will be an increasing chance for showers today as weak low pressure moves in this direction from the middle of the country, but the remainder of the week should be rain-free across the Tennessee Valley. In fact, the dry weather pattern setting up at mid-week can last all the way into the early part of next week and it will be accompanied by mild conditions on Friday, Saturday and Sunday.
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Punxsutawney Phil saw his shadow this morning suggesting there will be six more weeks of winter, and I certainly have faith in all Pennsylvania prognosticators. One thing is for sure...the next 7 days will feature more in the way of well below-normal temperatures, and the upcoming weekend will be bitterly cold across the Mid-Atlantic/Northeast US with a direct discharge of Arctic air from eastern Canada. The Arctic front at the leading edge of this brutally cold air mass can produce snow showers and squalls on Friday, and powerful winds will add to the misery on both weekend days. The big cities from DC-to-Boston will likely experience single digit lows once again during the weekend and wind chills will be at dangerously low levels on both days.
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The bitter cold weather pattern continues across the eastern states during the next few days with significant impacts reaching all the way down to southern Florida. In fact, the temperature will drop to near freezing in Miami by Sunday morning and zero-degree overnight lows are on the table during the next couple of nights in the Mid-Atlantic’s I-95 corridor. In addition to the cold, there will be explosive cyclogenesis this weekend near the east coast with biggest impacts from storm system likely to be across portions of Virginia, the Carolinas, and eastern New England as well. The I-95 region from DC-to-Philly-to-NYC will not go unscathed with a noticeable increase in winds from later Saturday into Sunday and there can be some snow with small accumulations on the table.
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The next few days will produce some of the worst of the cold for the Mid-Atlantic region with overnight lows way down in single digits or even near the zero-degree mark. Some record low temperatures are likely during this 3-day bitter cold spell and there can be some record low high temperatures as well with afternoon highs generally confined to the teens in many spots. Later this weekend, a big push of Arctic will be into the Southeast US and Florida can experience near freezing temperatures all the way to Miami by Sunday morning (watch for falling iguanas).
On the storm front, low pressure will develop near the Southeast US coastline on Saturday and then dramatically intensify as it moves over the western Atlantic Ocean somewhere to the east of the southern Mid-Atlantic region. The central pressure of this weekend storm could drop to similar levels as a category 2 or even category 3 hurricane and winds will become quite powerful. At this point, it appears the biggest impact from the weekend storm system will be confined to places like eastern North Carolina, southern Virginia, and the along coastal sections farther up the coast (e.g., New Jersey, Delmarva)…still a few days to go so stay tuned.
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The cold weather pattern across the eastern US will continue for the next several days and it will get worse before it gets better. Low pressure will form over the Gulf region by the weekend, and it’ll then head northeastward to the western Atlantic off the Carolina coastline. On its back side, strong N-NW winds will form by the weekend around here and a bitter cold Arctic air outbreak will reach way down to the southeastern states.
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In the wake of the major weekend winter storm, a very cold weather pattern has set up across the eastern states, and it looks like it’ll be quite a memorable stretch both in terms of magnitude and duration. A long-wave trough parked over the eastern US is allowing for the reinforcement of Arctic air masses with an especially bitter one coming to the Mid-Atlantic region for the second half of the week. Low temperatures on Wednesday night, Thursday night, and Friday night are likely to flirt with the zero-degree mark in many locations and challenge low temperature records. In addition, there may be record low high temperatures later in the week with afternoon highs likely limited to the teens - even in the big cities.
In addition to the relentless bitter cold, it looks like a powerful storm system will form this weekend somewhere near the eastern seaboard. This system is likely to have its origins over the Gulf region and then push northeastward to near the east coast while intensifying dramatically. It is still too early to determine its ultimate path, but a close trek to the coast could indeed bring significant snowfall and strong winds to portions of the northeastern states.
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In the wake of the major weekend winter storm, a very cold weather pattern is setting up in the Mid-Atlantic region, and it looks like it’ll be quite a memorable stretch both in terms of magnitude and duration. There may be record low temperatures in coming days as well as record low high temperatures; especially, in the period of the 29th to the 31st. In addition to the cold, there are signals for a powerful storm this weekend over the western Atlantic and it certainly can become a big-time snow producer for portions of the northeastern states.
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