A major Arctic air outbreak has reached the interior northwest and north-central states and it will become quite a newsworthy event in coming days as it drops southward to Texas by later this week. Numerous low temperature records are likely to be set over the next few days in the central US all the way from the Canadian border to the Mexican border. The Arctic air mass will then begin a push to the east on Thursday and it’ll reach the Tennessee valley on Thursday night. After a mild day, temperatures could plunge by more than 30 degrees on Thursday night in the wake of the Arctic frontal passage and snow showers will be possible.
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A major Arctic air outbreak has reached the interior northwest and north-central states and it will become quite a newsworthy event in coming days. This widespread and intensely cold Arctic air mass will drop southward to Texas by later Thursday and then shift to the east on Friday reaching the eastern seaboard by Friday night. Numerous low temperature records are likely to be set over the next few days; especially, in the central US from the Canadian border to the Mexican border.
At the leading edge of the Arctic air mass will be a powerful surface frontal system that will be very active as it crosses the Great Lakes/Midwest/Ohio Valley from west-to-east. This Arctic front will produce blizzard conditions from the Plains all the way to the Appalachians as it treks west-to-east during the next few days. The powerful Arctic front is likely to arrive in the DC-to-Philly-to-NYC corridor region on Friday afternoon and its passage could be quite dramatic.
Winds will be very strong and potentially damaging for much of the day on Friday in the Mid-Atlantic region both ahead of the Arctic front (S-SE direction) and behind it (W-NW direction)…not a good time for inflatable outdoor decorations. Temperatures will plunge as plunge as much as 25 or 30 degrees behind the front in just a couple of hours from the mild 50’s in the morning to the 20’s by day’s end. This sharp drop in temperatures can result in a “flash freeze” of any lingering wet spots on roadways from prior rainfall.
In addition, a burst of snow is possible immediately following the frontal passage which can even put down small accumulations in some spots as the Arctic air pours into the region in a still very unstable atmosphere. Christmas Eve (Saturday) and Christmas Day (Sunday) will be very cold throughout the eastern US with some of the coldest weather conditions for these two days in many years. Single digits are on the table in suburbs along the I-95 corridor both on Saturday and Sunday (Christmas) mornings.
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A record-breaking Arctic air outbreak will blast into the US this week. The core of the frigid air will drop southeastward into Montana/North Dakota on Monday and drop southward to Texas by later in the week. The Arctic cold will then spread east-northeastward into the Tennessee Valley by late Thursday or Thursday night. On the heels of the frontal passage, there can be snow shower activity on Friday, powerful winds and frigid cold to last into Christmas weekend.
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A major Arctic air outbreak will blast into the US this week. The core of the frigid air will drop southeastward on Monday from western Canada into Montana/North Dakota and then dive southward to Texas by later in the week. Numerous low temperature records are likely to be set in this outbreak all the way from the US/Canada border to the US/Mexico border. The Arctic air mass will then make another move on Friday to the northeast with a powerful surface frontal system at the leading edge of the advancing cold air mass.
The powerful Arctic front will arrive in the Mid-Atlantic’s I-95 corridor likely late Friday and its passage could be quite dramatic. Damaging winds are possible late Friday, temperatures will drop sharply, and there can be a quick freeze-up or “flash-freeze” of any lingering wet spots on roadways. In addition, snow showers or even heavier snow squalls can develop as the Arctic air pours into the region in a still very unstable atmosphere. Christmas Eve (Saturday) and Christmas Day (Sunday) will be very cold throughout the eastern US with some of the coldest weather conditions for these two days in many years.
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The weather calmed down on Thursday and the next several days will be rather “event-free” featuring quite chilly conditions despite plenty of daily sunshine. Highs over the next several days will average in the 40’s and overnight lows down into the 20’s on a few occasions.
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A record-breaking Arctic air outbreak will blast into the US next week. This frigid air mass will spread south and east next week - no doubt breaking numerous low temperature records along the way - and reach the eastern states by week’s end. A very cold Christmas weekend is in store for much of the eastern half of the nation. In fact, Christmas Eve and Christmas Day (Saturday, Sunday) could turn out to the coldest such in many years across much of the eastern half of the nation. With respect to snow chances, there may very well be a major storm system that forms on the leading edge of the Arctic blast at the end of next week in the eastern US which raises hope for a white Christmas in many locations.
Meanwhile, in the short-term, the major storm that has pounded much of the country in recent days with blizzard conditions in northern areas and severe weather in southern states is now impacting the Mid-Atlantic region and Northeast US. Rain will be the dominate precipitation type from here on out in the immediate I-95 corridor to go along with increasingly strong easterly winds. Significant snow is on the table for upstate PA, upstate NY, and the interior part of New England with some spots likely to receive more than a foot. Following this storm, much of the nation will experience colder-than-normal conditions this weekend with virtually coast-to-coast below-normal temperatures.
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After the soaking rain of Thursday, the weather will calm down tonight featuring some sunshine and moderately cool temperatures. Colder air does push into the region over the next couple of days and temperatures will be below-normal this weekend in the Tennessee Valley and across much of the nation.
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A powerful storm that has caused problems in much of the nation in recent days will impact the Mid-Atlantic region and Northeast US from later tonight into early Friday. Heavy snow associated with this impactful storm system fell this past weekend in the Sierra Nevada Mountains of eastern California and southern Cascades. Significant snow then fell from Monday into Tuesday across the northern Rockies and Northern Plains and today’s blizzard conditions will extend east to Minnesota and Wisconsin. Meanwhile, in the warm sector of this large-scale storm system, severe weather including isolated tornadoes broke out yesterday from Texas/Oklahoma to Louisiana and the threat zone today will shift slightly to the east to include Mississippi and Alabama.
By late tonight, precipitation will break out in the Mid-Atlantic and an icy mess is on the table for early Thursday from DC-to-Philly; especially, in the northern and western suburbs of those cities. Increasingly strong easterly winds will pump in slightly milder maritime air later tomorrow bringing about a transition to plain rain and some of it will become heavy at times into the nighttime hours to go along with those strong winds.
Looking ahead, a major Arctic air outbreak appears to be headed to the US later next week and the frigid air mass will likely last stick around right through the Christmas weekend in much of the central and eastern US. Arctic cold has gripped Europe for the past several days and this is often a foreshadowing of conditions to come in the US. The cold weather pattern will remain quite active as well next week increasing the chances for a white Christmas in much of the northern US.
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A strong frontal system will generate showers and thunderstorms in the area through this evening and some of the rain will be heavy at times. In locations where strong thunderstorms take place, rainfall amounts can climb to 2 or 3 inches with localized flash flooding a threat. On the other side of the front on Thursday, cooler air will flood the Tennessee valley and temperatures will drop through the 30’s tomorrow night.
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A major storm system continues to wreak havoc across the nation today with blizzard conditions in the Northern Plains and severe weather in the south-central US. This same system dumped 6 feet of snow over the weekend in the Sierra Nevada Mountains of eastern California. As this initial storm system grinds to a halt over the Upper Midwest later this week, a secondary storm will form near the eastern seaboard. This system will bring significant snows to interior sections of the Mid-Atlantic and Northeast from Thursday into Friday while the I-95 corridor region from DC-to-Philly-to-NYC is likely to experience a wintry mix at the onset of the event followed by heavy (plain) rain and strong winds.
Looking ahead, an Arctic outbreak appears to be headed to the US later next week and the biting cold will likely last right through Christmas weekend in the central and eastern states. Arctic cold has already become well established across much of Europe and Asia which is often a foreshadowing of conditions to come in the US. The cold pattern will remain quite active later next week with storm chances increasing the chances for a white Christmas in much of the northern US.
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