It’ll remain hot today in the Mid-Atlantic region, but overall humidity levels should be somewhat reduced compared to yesterday’s high values following the passage of a weak cool front (more like a “dew point” front and not a “temperature” front). The weekend will feature high heat and humidity with temperatures climbing well into the 90’s on both days and a surge to near 100 degrees is not out of the question in some spots. The next cool frontal system should bring some shower and thunderstorm activity to the region on Monday and its ultimate passage will bring us relief in the temperature department for Tuesday and Wednesday.
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The Mid-Atlantic region has enjoyed a relatively normal summer so far with respect to overall temperatures featuring close-to-normal readings in the month of June and also for the first few weeks of July. We are now, however, in an extended stretch of hot and humid weather that will last right through the upcoming weekend and it looks like the heat will peak this weekend. In fact, high temperatures on Sunday afternoon could flirt with the 100 degree mark in some spots ahead of a cool front that should bring some relief by Tuesday and Wednesday.
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The first extended heat wave of the season in the Mid-Atlantic region will continue through Sunday. Temperatures today will climb well into the 90’s and the humidity will be quite oppressive. A weak frontal system will generate scattered afternoon/evening showers and thunderstorms. Any thunderstorm that does form later today can be on the strong side. It remains hot on Friday, but the humidity should be down some compared to today’s very uncomfortable levels. The heat is likely peak this weekend with high temperatures on Sunday afternoon possibly flirting with the 100 degree mark. Another front will enhance chances for rain late Sunday and especially on Monday and its ultimate passage will bring us some relief in the temperature department for Tuesday and Wednesday.
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Temperatures should climb to or slightly above the 90 degree mark later today and it looks like the heat and humidity will last right through the upcoming weekend. In fact, the heat is likely to peak this weekend in the Mid-Atlantic region with highs here on Sunday afternoon potentially in the mid or upper 90’s. The nights will not offer much in the way of relief through this stretch as temperatures may only drop to the upper 70’s in parts of the metro region. A weak frontal system will enhance chances slightly for showers and thunderstorms tomorrow afternoon and then another front could renew the threat of rain late Sunday and/or Monday. Looking ahead, relief is likely to reach us early next week following the passage of a cool frontal system.
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After an active day on Monday with scattered showers and thunderstorms in the Mid-Atlantic region, today should turn out to be rain-free and a little less humid than yesterday. It appears that the worst stretch of heat and humidity will makes its way into the Mid-Atlantic region for the second half of the work week and likely right through the weekend as well. We’re likely not talking about record highs with this hot spell, but the nights will offer little respite as overnight lows on Wednesday and Thursday nights, for example, will hold in the mid and upper 70’s in many spots. A weak frontal system could enhance chances for showers and thunderstorms on Thursday afternoon and then another front could renew the threat of rain on Sunday.
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The combination of a very humid air mass and an impulse in the upper atmosphere drifting in this direction will likely result in numerous afternoon and evening showers and strong-to-severe thunderstorms in the Mid-Atlantic region. Given the high moisture levels and the ”lift” in the atmosphere that is expected later today, any PM shower or thunderstorm can dump a lot of rainfall in a short period of time with localized flooding a possibility. After a calmer day on Tuesday, the mid and late week will feature the worst stretch of heat and humidity so far this summer with afternoon highs in the low-to-mid 90’s along the DC-to-Philly-to-NYC corridor.
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A weak frontal system and a very humid air mass will keep us unsettled today in the Mid-Atlantic region with the chance of afternoon and evening showers and thunderstorms. Any shower or thunderstorm later today/early tonight can produce heavy rainfall with localized flooding a possibility. The front will dissipate during the next couple of days and an increase in sunshine will boost temperatures to the low-to-mid 90’s by mid-week and it’ll be humid as well. Another frontal system will bring us a return of a shower and thunderstorm threat later in the week.
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We have now reached the mid-point of the month of July and, so far, tropical activity has been below-normal in the Atlantic Basin. In fact, activity across the northern hemisphere as a whole has been below-normal as measured by a metric known as the “accumulated cyclone energy” or ACE. There are signs, however, that at least the Atlantic Basin will see a ramp up in action during the next several weeks.
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The weather will get more unsettled this weekend in the Mid-Atlantic region as high pressure shifts to an offshore position and a frontal system approaches from the northwest. This front will be a slow-mover and will hang around during the early part of next week. As a result, the chance of showers and thunderstorms will increase some this weekend and the threat will stick around on Monday.
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The weather stays generally rain-free and moderately warm over the next couple of days as high pressure over the Great Lakes dominates the weather scene around here. However, there is a weak frontal boundary zone nearby and its proximity to this area could result in an isolated shower or thunderstorm both later today and on Friday. The overall pattern tends to turn warmer and more unsettled this weekend and into the early part of next week, but still no sustained 90+ degree type of weather.
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