The weather stays somewhat unsettled today with the chance of showers and cooler with afternoon highs likely limited to the low-to-mid 60’s. A storm system will approach by the end of the weekend, and it should bring about cool, windy weather for the early part of next week and the potential of some accumulating mountain snow.
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Tropical Storm Melissa continues to drift today over the warm waters of the Caribbean Sea and will likely do so for several days to come. There has been no intensification of the tropical system during the past 24 hours or so as it is in an area featuring strong westerly vertical wind shear. Wind shear in the general vicinity of the circulation center of Tropical Storm Melissa is likely to diminish over the upcoming weekend which should allow for intensification of the system into a minimal hurricane, and a strengthening to “major” (category 3 or higher) hurricane status is certainly on the table by early next week. Ultimately, this tropical system will take a turn to the north - perhaps crossing over central Cuba - on its way to the western Atlantic Ocean. An active weather pattern next week will feature a powerful jet streak, intense blocking in the atmosphere centered over Canada, plenty of colder-than-normal air, an intensifying upper-level trough over the central and eastern US, and Hurricane Melissa. There is quite likely going to be some kind of interaction between the inland upper-level trough and the western Atlantic Ocean hurricane, and a “late in the game” turn to the northwest by the tropical system cannot be completely ruled out.
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Seasonal temperatures are likely for another day and there can be afternoon and evening shower activity. The weekend turns slightly milder, but then a storm system approaches late Sunday and the overall pattern will begin to change. Colder weather conditions are likely during the early part of next week in the Denver metro region and there can be some rain and/or snow shower activity...up in the mountains snow is likely and there can be some accumulations.
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Seasonal temperatures are likely during the next couple of days and there can be some shower activity from later tomorrow into tomorrow night. The weekend turns slightly milder, but a storm system will approach, and it could have an impact here by early next week bringing colder conditions to the area.
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The European model run on Monday morning produced some stunningly high rainfall amounts of a foot or more in much of the Mid-Atlantic region for the 5-day period ending on Saturday, November 1st. Meanwhile, the Canadian model run from Monday night featured what is likely to be a hurricane (Melissa) producing accumulating snow over some of the higher elevations of the Northeast US late next week after it shifts northwest towards the New England coastline and encounters an unusually cold air mass. While odds are against either of these scenarios coming to fruition, they do suggest to me that the models are correctly sniffing out the potential for some energetic weather from later next week into the following week and there are several ingredients likely to come into play for just such a pattern. The ingredients include a powerful jet streak that will push into the western US this weekend from the northern Pacific Ocean, intense blocking in the upper part of the atmosphere that is likely to develop across central Canada by the middle of next week, a cold air intrusion into the US from Canada, and a likely hurricane over the western Atlantic Ocean.
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Yesterday featured strong winds across the region, but it turns out calmer today with lighter winds and seasonal temperatures. In fact, temperatures should remain close to seasonal averages for the remainder of the week and after dry conditions for the next couple of days, the threat of showers returns on Thursday.
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There have been some notable storms near the east coast during the late stages of October and early parts of November including Hurricane Sandy in 2012, the so-called “Perfect Storm” in 1991, and Hurricane Nicole in 2022 which made landfall in Florida. It is at this time of year where there can be a “last gasp” from the Atlantic Basin tropical season as water is still quite warm in places like the Caribbean Sea, and southwestern Atlantic Ocean. At the same time, there is often an increasing frequency of chilly air masses moving from Canada into the US warning us that winter is not too far away. It is this combination of a waning tropical season combined with increasingly winter-like chill that can cause volatile weather patterns in late October and early November and we could be setting up for something like that for late next week into the beginning of November.
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It’ll be some ten degrees cooler today compared to Sunday following the passage of a cold frontal system and the wind will be a noticeable factor blowing out of the west-to-northwest. Winds will lighten up in the overnight hours and temperatures are likely to bottom out in the middle 30’s and temperatures look to be rather seasonal through the rest of the week.
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It’ll be some ten degrees cooler today compared to Wednesday and each of the next couple of nights will feature overnight lows not far from the 40-degree mark. While there can be a couple of showers early today, much of the time should be rain-free and breezy as well.
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The weather becomes warmer today and then more tonight and on Thursday with an increasing chance of showers and thunderstorms. Dry weather is likely for the end of the week and upcoming weekend with 60’s likely for highs on Friday and Saturday and then the 70’s early next week.
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