Every once in awhile there is a frontal passage that is a longer-term pattern changer and tomorrow night, we will experience such a front in the Mid-Atlantic region and NE US. October has been generally warmer-than-normal in the eastern US with Philly, for example, at +3.2 ºF for the month so far and Washington’s Reagan National Airport at +4.4 ºF. The strong cold front that will pass through the region tomorrow night with downpours, strong-to-severe thunderstorms, and howling winds gusting up to 50 mph will usher in much cooler air for Friday and Saturday and then a secondary front on Sunday will usher in the coldest air of the season so far. A widespread freeze is likely on Sunday night for the first time this season in the Mid-Atlantic/NE US and a colder-than-normal pattern is likely to continue for much of the month of November.
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A slow-moving strong cold front will continue to slowly trek across the nation over the next couple of days and it’ll remain to our west through most of the day on Thursday. As a result, it’ll stay warm and quite breezy around here on Halloween Day with occasional showers likely. As the front arrives later tomorrow night, there is likely to be a period of heavy rainfall going into the overnight hours along with possible strong thunderstorms. There can be some residual rain early Friday, but it’ll soon push off the east coast and temperatures will be some 10-15 degrees lower compared to the unusually warm conditions expected on Halloween Day. Even cooler air will arrive in the Mid-Atlantic region by the latter part of the weekend and it looks like an overall cooler-than-normal weather pattern will continue through much of the first part of November. (By the way, this is the weekend in which we turn the clocks back an hour).
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High pressure will continue to produce onshore in the region and this will lead to patchy drizzle at times and relatively mild temperatures. A warm front will arrive on Wednesday increasing the chances for showers in the Mid-Atlantic region. A strong cold front will be situated to our west on Thursday, Halloween Day, and this will result in occasional showers with breezy and mild conditions. Later Thursday night, as the strong cold front arrives, heavy rainfall is likely and there can be strong-to-severe thunderstorms mixed in. It’ll turn cooler on Friday behind the front and then even cooler air arrives this weekend in what looks to be a cooler weather pattern setting up for the first part of November.
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High pressure will build into the Mid-Atlantic for the next couple of days and we’ll start off the new work week with cool and rain-free conditions. A strong cold front will slowly trek across the nation over the next few days and it’ll arrive in the Great Lakes region by Thursday. As a result, Halloween Day (Thursday) around here may feature showers ahead of the cold front with breezy and mild conditions and heavy rain is possible late Thursday night into early Friday as the front arrives. Following the passage of the front at the end of the work week, cooler-than-normal air will push in for the upcoming weekend and it looks like the pattern may stay on the cool side as we progress through the first part of November.
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High pressure will remain in control of the weather around here into the weekend, but a couple of fronts will bring us some rainfall from later tomorrow into Sunday. Tropical moisture from the Gulf of Mexico will merge with an eastward moving cold front over the next couple of days and produce significant rainfall from the northern Gulf to the Ohio Valley. As low pressure pulls to our northwest along the cold frontal boundary zone, a warm front will push northward later in the day on Saturday. This front could bring some scattered shower activity to the region tomorrow night and then the cold front will close in from west-to-east during the day on Sunday with occasional rain likely and it can be heavy at times. The low pressure will push off the coast on Sunday night paving the way for drier conditions as we begin the new work week.
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High pressure will remain in control of the weather around here for the next couple of days with generally cool and dry conditions in the Mid-Atlantic region. There will be an increasing chance for rain this weekend as low pressure pushes out of the Deep South and heads toward the Ohio Valley/Great Lakes. As a result, a warm front will push northward into the Mid-Atlantic region later Saturday and the low pressure system will push a cold front in our direction on Sunday. Rain is likely to accompany both frontal systems from later Saturday into Sunday with the heaviest amounts likely to come on Sunday. The low pressure system will push off the Mid-Atlantic coastline on Sunday night and drier air will return for the early part of next week.
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The World Series between the Washington Nationals and Houston Astros began last night in Houston, Texas, but weather was not a factor. The Astros stadium known as Minute Maid Park has a retractable roof and it was closed last night for Game 1 which was won by the Nationals with a 5-4 score. The World Series will shift to Washington, D.C. on Friday night for Game 3 and then Games 4 and 5 (if necessary) are scheduled for Saturday night and Sunday night respectively.
From this vantage point, it appears the weather will be decent for Game 3 on Friday night with cool and dry conditions, but then rain could become a factor this weekend for Games 4 and/or 5. It does not appear that any of these three scheduled games in Washington, D.C. will be played under truly cold conditions as any significant cold air outbreak for the Mid-Atlantic region should hold off until later next week – perhaps in time for Halloween Day. Weather has indeed had a big impact on some World Series games in recent history in terms of both cold and precipitation.
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A cold front slipped through the region last night and it’ll be sunny today as high pressure builds into the region and seasonably cool. Winds will become quite noticeable today, but then should calm down in the overnight hours and this will allow temperatures to fall to the lower 40's for late night lows. High pressure stays in control over the next couple of days and then we’ll have to watch an area of moisture in the Deep South that can result in clouds and rain around here over the weekend.
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A cold front will approach the region later today and after a couple of scattered showers this morning and mid-day, the rain will become more widespread for the mid and late afternoon and it should continue into early tonight. Clearing skies will follow late at night and the next two days promise to be generally sunny and seasonably cool days for this time of year. Another front may approach the region at the end of the work week; the frontal passage could be on the dry side, but it is too early to write off the chance of showers from late Friday into early Saturday.
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A tropical system continues to slowly intensify over the Gulf of Mexico and has now reached named (Nestor) tropical storm status. This system is moving to the northeast and will approach the northern Gulf coast later today and tonight and then move inland across the southeast US this weekend. By late Sunday, this tropical storm will likely move offshore somewhere near the Outer Banks of North Carolina and it could generate some rainfall on its NW side in the Mid-Atlantic region late Saturday night/Sunday morning. Looking in the extended time period, some impressive cold air outbreaks are likely to impact the central and eastern US during the last week of October and the first week of November – perhaps leading to quite a chilly Halloween for lots of people across the eastern half of the nation.
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