A strong cold front will slowly push across the nation over the next few days and it’ll have an important impact on a wide area from the Rockies to the eastern seaboard. A powerful digging jet stream in the upper atmosphere will help to carve out a deep upper-level trough by late in the week and the result of this overall unfolding weather pattern will be heavy snow across the Rockies, heavy rain in the Ohio and Tennessee Valleys, and a severe weather threat across much of the southern US. Rain will spread into the eastern US by Thursday night as the front continues to slide slowly to the east. The rain will likely continue into Friday night in the eastern US - possibly heavy at times - as low pressure forms along the frontal boundary zone.
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It’ll remain chilly around here today, but a mid-week warm up begins on Wednesday (Halloween Day) and peaks on Thursday with highs well up in the 60’s. The warm up comes ahead of the next strong cool frontal system will should produce rain here on Thursday night and Friday, maybe even a thunderstorm, and some of the rain can be heavy at times. Temperatures trend back down to cooler-than-normal levels on Friday and Saturday following the passage of the strong cool front.
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A disturbance in the upper atmosphere will pass off to our northeast this morning and high pressure will build in for the next couple of days. It’ll remain cooler-than-normal here today and again on Tuesday as our chilly weather pattern continues for a bit longer, but then it should turn milder on Wednesday (Halloween Day) as our low-level winds turn to a southwesterly direction ahead of the next frontal system. The mid-week warm up will peak on Thursday just ahead of the next cool front which should bring us showers by Thursday night and cooler conditions again to end the work week.
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Low pressure will intensify near the Carolina coastline late today and then slowly push northward to a position over central New Jersey by mid-day Saturday and the result will be a soaking rain event in the DC-to-Philly-to-NYC corridor. The ingredients are in place for this significant rain event including an entrenched cold and dry air mass in the Northeast US, copious amounts of moisture to our southwest, and an intensifying upper-level trough in the eastern US. Strong winds will also become a major factor with this intensifying storm system; especially, along coastal sections where gusts past 60 mph are possible between midnight and noon on Saturday and gusts up to 50 mph are possible across interior locations. The air in place across the Northeast US will be cold enough during this upcoming event for some frozen precipitation in interior, higher elevation spots from West Virginia/western Virginia-to-northern Pennsylvania-to-northern New England.
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An active stretch of weather gets underway later today as low pressure intensifies near the Carolina coastline and then pushes northward to southern New Jersey by mid-day tomorrow. An initial wave of energy in the upper part of the atmosphere will contribute to a soaking rain event here from later today into Saturday and then a second disturbance will bring additional showers from late Sunday night into early Monday. Following the second system, it’ll turn dry, but remain on the chilly side of normal on Tuesday and then turn milder for Wednesday (Halloween Day).
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The ingredients are falling into place for a significant rain event in the Mid-Atlantic region that should get underway later tomorrow as intensifying low pressure heads up along the eastern seaboard. The combination of an entrenched cold and dry air mass, copious amounts of moisture to our southwest, and vigorous upper-level energy dropping southeastward towards the eastern US will result in a soaking rain event in the Mid-Atlantic that could yield 2+ inches in some spots by early next week. A second wave of energy in the upper atmosphere is likely to produce additional showers in the late Sunday night/early Monday time frame.
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High pressure will maintain control of the weather here today and tonight, but then strong low pressure will ride up along or near the east coast and produce significant rainfall in the Mid-Atlantic region from later tomorrow into late Saturday. A second wave of energy will rotate through a deep trough in the upper atmosphere late in the weekend and keep it unsettled and chilly around here with additional showers likely from Sunday night into Monday. Dry and chilly weather should return for Tuesday and Halloween Day (Wednesday).
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The ingredients are falling into place for a significant rain event in the Mid-Atlantic region that should get underway later Friday as intensifying low pressure heads up along the eastern seaboard. The combination of an entrenched cold and dry air mass, copious amounts of moisture to our southwest, and vigorous upper-level energy dropping southeastward towards the eastern US will result in a soaking rain event in the DC-to-Philly-to-NYC corridor that could yield 2+ inches in some spots by early next week.
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A cold frontal system passed through the region last night and it has ushered in colder air for the next couple of days. High pressure will resume control of the weather following the frontal passage and we’ll experience plenty of sunshine today and Thursday to go along with below-normal temperatures. Low pressure will form over the Gulf of Mexico over the next couple of days and it will head towards the Mid-Atlantic coastline by end of the week. As such, our weather will go downhill on Friday with an increase in clouds and rain is likely from late Friday into Saturday night and some of it will be heavy at times. A second wave of energy will rotate through a deep upper-level trough and keep it chilly and unsettled around here on Sunday and Monday with additional showers likely.
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The ingredients are going to fall into place for a strong storm in the Mid-Atlantic region that is likely to bring rain and wind to the I-95 corridor and points east to the coast from later Friday into Saturday. Enough cold air may wrap into the storm this weekend for some frozen precipitation to interior higher elevation locations of the Northeast US. The combination of copious amounts of low-level moisture, deep and broad upper-level energy, and an unfolding blocking pattern aloft is likely to result in strong low pressure near or along the east coast that will become a rather slow mover. Interestingly, some of the moisture that gets intertwined into this system will come from Hurricane Willa which has weakened very significantly in the past 24 hours (rise of 45 millibars in its central pressure) and is now a category 3 storm just off the west coast of Mexico. This tropical system will continue to weaken as it moves northeastward over the next couple of days; however, it will add some moisture and energy to low pressure that will develop over the Gulf of Mexico later in the week.
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