Following the passage of a weak cold front and combined with some more wildfire smoke in the area which can dim the skies at times, temperatures today will get knocked down a bit from recent days. The wildfire smoke had its origins in southern Canada and the low-level wind flow has pushed it into the Mid-Atlantic region. An active weather day is setting up for Saturday as a frontal system and an impressive wave in the upper atmosphere will likely produce numerous showers and thunderstorms during the first half of the weekend. Some of the storms on Saturday can be strong-to-severe and some of the rainfall can be heavy. The front should clear the area on Sunday with improving weather conditions likely going into the early part of next week.
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There is the threat of severe weather and heavy rainfall on Saturday in the Mid-Atlantic region as the overall weather pattern will result in high instability across the area. The pattern will feature an intense ridge of high pressure centered over the Rocky Mountain States with northwesterly flow over the Great Lakes/Northeast US. Often, this kind of flow results in “lines” or “complexes” of thunderstorms dropping to the south and east from the Great Lakes to the northeastern states and that is on the table for the first half of the weekend. The potential exists for heavy rain and localized flash flooding as precipitable water amounts in the atmosphere will climb to quite high levels. Meanwhile, wildfire smoke from Canada will continue to be an issue as we slide into the end of the week, and it will dim the skies at times through Friday.
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Today will be another hot one in the Mid-Atlantic region with afternoon highs well up in the 90’s in many areas and there will be areas of smoke from still-active Canadian wildfires to our north and west. In fact, the wildfire smoke could stick around into tomorrow given the current directional flow of low-level air and it will certainly dim the skies at times. There can be a shower or thunderstorm later today, tonight, and on Friday, and the weekend will get off to an active start with a renewed chances of showers and thunderstorms on Saturday.
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Temperatures will soar today to near the century mark in the DC metro region with strong high pressure ridging extending into the area from the Northern Plains. A frontal system will pass through the area later in the day and it may usher in some wildfire smoke from Canada that can stick around for a couple of days and dim the skies at times. It stays rather hot during the next couple of days and then the pattern becomes much more unsettled this weekend with the chance of strong-to-severe thunderstorms and some heavy rainfall on both days.
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The overall weather pattern may be setting up for a severe weather and heavy rain threat in the Mid-Atlantic region during the first half of the upcoming weekend. The pattern will feature an intense ridge of high pressure centered over the Rocky Mountain States by the weekend with northwesterly flow over the Great Lakes/Northeast US. Often times, this kind of flow results in “lines” or “complexes” of thunderstorms dropping to the south and east from the Great Lakes to the northeastern states and that is on the table for Saturday. The potential exists for heavy rain/flash flooding as well as precipitable water in the atmosphere will climb to high levels. The weekend threat will be preceded by hot weather that can see temperatures surge to near the century mark on Wednesday anywhere along the DC-to-Philly-to-NYC corridor. One final note, wildfire smoke from Canada will likely drop south and east into the Mid-Atlantic region during the next couple of days and it certainly can dim the skies at times.
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High pressure in the upper part of the atmosphere will expand to the Mid-Atlantic region today from the Northern Plains leading to hotter weather around here for the next few days. In fact, temperatures are likely to reach the lower 90’s today, and then soar to near 100 degrees on Wednesday – likely the hottest day of the week. The next few days will generally be relatively quiet in terms of precipitation chances though an isolated thunderstorm or two will be possible. More widespread unsettled weather returns at the end of the week and during the early part of the weekend with the approach of a cold frontal system. This unfolding pattern for the early part of the weekend could result in a heavy rain/flash flooding threat for the Mid-Atlantic region and possible strong-to-severe thunderstorms.
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High pressure builds into the Mid-Atlantic region today and it should be in control for the next few days. Temperatures will be moderately warm today, rise to above-normal levels on Tuesday, and then soar into the upper 90’s on Wednesday…likely the hottest day of the week. A dry and weak cold front will pass through the region late Wednesday and its passage will have little in the way of relief for the metro region. Unsettled weather makes a return by the end of the week or the early part of the upcoming weekend and strong thunderstorms are likely going to come back to the table.
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A cold front will only slowly push through the region during the next 24 hours or so leading to more unsettled weather featuring scattered showers and thunderstorms. Drier air should take over later in the weekend and the early part of next should be mainly rain-free as high pressure intensifies over the Northern Plains. By the middle of next week, hot weather conditions will return to the Mid-Atlantic region with 90+ degrees back on the table for afternoon highs.
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A cold front will approach the area later today and push through from Friday into early Saturday. As a result, showers and thunderstorms are likely; especially, during the afternoon and evening hours. Some of the rain can be heavy today and localized flash flooding is a possibility. While a shower or thunderstorm cannot be ruled out this weekend, it’ll tend to become drier in the Mid-Atlantic region following the passage of the frontal system.
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High pressure tries to build into the region today, but the atmosphere is still loaded with low-level moisture and scattered showers will be the result. A cold front will approach the area on Thursday and push through from Friday into early Saturday. As a result, the chance of showers and thunderstorms returns later tomorrow and will likely continue on Friday. No extreme heat is in sight for the Mid-Atlantic region such as what we experienced last week and during the holiday weekend.
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