One cold front passed through the region on Tuesday night and a second front will arrive here late tonight. Showers are likely as this front arrives late tonight as weak low pressure forms along the frontal boundary zone. The passage of this second cold front will bring a cool air mass into the region for the Friday, Saturday, and Sunday time period with generally rain-free conditions. There is the threat for more rain late Sunday night or Monday as low pressure tries to form along the east coast. As the central and eastern states experience a chill down in coming days, the western states will get hotter and stay rain-free and this will increase the threat for wildfires.
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A slow-moving cold front has worked its way through the region and today will turn out to be cooler, breezy and less humid than yesterday. A second cold front will approach the region late tomorrow night and showers are likely to return as low pressure forms along the frontal boundary zone. The passage of that second cold front will bring an even cooler air mass into the eastern states for the Friday, Saturday, and Sunday time period with generally rain-free conditions. More rain is a threat for the early part of next week as another low pressure likely heads this way. As the central and eastern states experience a chill down in coming days, the western states will get hotter and stay rain-free and this will enhance their already rather high wildfire threat.
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A slow-moving cold front will produce rain in the Mid-Atlantic region from later today into early Wednesday and some of the rain will be heavy at times and embedded strong thunderstorms are possible. It’ll turn a little cooler at mid-week, but a second cold front will bring an even cooler air into the eastern states for the upcoming weekend. As the central and eastern states experience significant rainfall and an unfolding colder weather pattern, the western states will get hotter and stay dry and this will enhance the wildfire threat.
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A slow-moving cold front is approaching the region and it will generate showers from later today into early Wednesday and some of the rain will be heavy at times. After some clearing later tomorrow, Thursday’s weather will start off nice, but then another cold frontal system will combine with weak low pressure to generate more showers later Thursday night into early Friday. High pressure will settle in for the weekend with a chilly air mass for this time of year, and then another storm system threatens us for the early part of next week.
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It has been cooler-than-normal so far this month in much of the Mid-Atlantic region with some spots in the I-95 corridor recording four consecutive nights with overnight low temperatures in the 40’s – something that hasn’t happened in many decades during the month of September. For the month so far, DC is averaging 1.6 degrees below-normal, Philly 1.3 degrees below-normal, and Central Park in New York City has a monthly average temperature of 0.8 degrees below-normal. Looking ahead to next week, an even colder air mass is destined to reach the central and eastern US as a deep upper-level trough forms overhead. This cold air outbreak for the central and eastern US will roughly coincide with the calendar transition from September to October with a couple of cold fronts ushering in a “step-down” to the colder-than-normal conditions. Once the colder-than-normal air mass becomes established, it looks like it’ll stick around right into the first full weekend of October. In terms of rainfall, a decent chance of rain will come on Monday and Tuesday as a couple of cold fronts push through the region at the leading edge of the colder-than-normal air mass.
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High pressure over the Southeast US will drift off the coast late this week and some leftover moisture from Tropical Storm Beta will works its way into the Mid-Atlantic region. Temperatures will continue to run at pretty comfortable levels for the next several days with highs generally at or below the 80 degree mark and there can be a shower from time-to-time from later tomorrow into the weekend. Looking ahead, a very chilly air mass for this time of year will make its way from central Canada early next week to the central and eastern US by later in the week.
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It looks like the month of October will begin with quite an impressive cold air outbreak in the central and eastern US as a deep upper-level trough forms overhead. The strong surface cold front that will be at the leading edge of the cold air mass is likely to reach the east coast at mid-week and colder-than-normal conditions will last right into the first full weekend of October. On the tropical scene, it looks like the Atlantic Basin may actually have some quiet time – at on a temporary basis - after a very active stretch in the month of September.
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Strong high pressure to our north will continue to control the weather around here for the next few days as it becomes re-established in the Northeast US/SE Canada after retrograding a bit yesterday. Temperatures will climb a bit today compared to the past few days and likely come close to the 80 degree mark for afternoon highs. It stays quite comfortable and dry for the next couple of days and then the chances of showers may climb late in the week and for the weekend as the remains of Tropical Storm Beta push towards the Mid-Atlantic region.
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Strong high pressure to our north continues to control the weather around here and throughout the northeastern part of the nation. Temperatures will remain in comfortably cool territory today, but will turn a little bit warmer for the second half of the week. The overall dry weather pattern that began in earnest last week will continue right into the upcoming weekend.
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Strong high pressure to our north will control the weather around here for much of the week. Temperatures will continue to run at below-normal levels for this time of year for the next couple of days, but it’ll turn a bit warmer for the second half of the week. The overall dry weather pattern that began in earnest last week will continue through the week with little chance of rain for the next several days.
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