A strong cold front passed through the region early yesterday and ushered in a cold air mass for the region and it’ll stay windy and colder-than-normal today. While it stays cold on Wednesday, the winds will be far less of a factor and it’ll feel less harsh as a result. Thanksgiving Day actually turns a bit milder with highs back up in the 50’s, but then the next strong cold front will usher in another cold air mass for Friday and winds will be quite strong once again as we end the work week.
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One cold air outbreak reached the Mid-Atlantic region late last week and another one is arriving today on increasing NW winds and a third one will arrive at the end of the week. In fact, it is possible that the only day of the next several that is at or slightly above-normal in terms of temperatures could be Thursday, Thanksgiving Day. While the overall pattern does favor additional cold air outbreaks for the Mid-Atlantic region in coming days, the chances for snow are more elusive. There is one system, however, that could become a player in about a week’s time and it will have to be monitored over the next few days for possible snow in the Sunday/Monday time frame. Looking ahead, one index known as the Madden Julian Oscillation (MJO) signals that cold air outbreaks may continue into the first half of December for the eastern half of the nation.
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A strong cold front is clearing its way off the coast this morning and the skies should clear later in the day with NW winds picking up as a fresh, cold air mass pushes into the region. It’ll stay cold and windy on Tuesday and then cold on Wednesday with less wind. Thanksgiving Day (Thursday) looks pretty decent with milder conditions and some sunshine before another cold air mass arrives on Friday following the passage of another cold front.
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A strong cold front passed through the region last night and today will turn out to be a windy and cold day in the Mid-Atlantic region with plenty of sunshine. Winds will be out of the northwest - perhaps gusting past 30 mph at times – and making it feel colder than the actual air temperature. The winds do die down later tonight and temperatures will drop into the upper 20’s for overnight lows – the lowest readings so far this season in some spots. It remains cold on Saturday, but the wind will be less of a factor compared to Friday. Another strong cold front will arrive by early next week with showers likely on Sunday night and Monday morning and this system will usher in the coldest air mass so far this season. By Tuesday, temperatures will be well below-normal, NW winds will be strong perhaps gusting up into the 40-50 mph range, and instability in the atmosphere could cause some snow shower activity in the Mid-Atlantic region. It looks dry for the busy travel days of next Wednesday and Thursday.
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The warm up that began on Wednesday will peak this afternoon with temperatures climbing to 70+ degree just ahead of the next strong cold front. The passage of this next cold front will come with a few showers and it’ll usher in much colder air for Friday and there will be a noticeable NW wind to make it feel even colder than the actual air temperature. It remains cold on Saturday with the day likely starting in the 20’s in most spots, but the wind will be less of a factor compared to Friday. Another strong cold front will arrive by early next week with showers likely on Sunday night and Monday morning and this system will usher in the coldest air mass so far this season. By Tuesday, temperatures will be well below-normal and winds will be strong from the northwest and instability in the atmosphere could cause some snow shower activity in the Mid-Atlantic region. It looks quieter again for the busy travel days of next Wednesday and Thursday.
One final note, there will be a partial (almost total at 97%) eclipse of the moon very late tonight from 2:18 AM to 5:47 AM (with peak around 4:02 AM). This is actually going to be the longest partial lunar eclipse in nearly 600 years. It’ll be a close call with respect to the sky cover as clouds should gradually clear after midnight and it’ll be cold and windy.
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Milder air is pushing into the Mid-Atlantic/Northeast US today on the backside of high pressure over the western Atlantic and this warm up will peak on Thursday afternoon with high temperatures not far from the 70 degree mark in the DC-to-Philly-to-NYC corridor. The warm up will be rather short-lived, however, as a strong cold front moves through the region on Thursday night with some rain shower activity and Friday promises to be a windy and cold day with gusts past 30 mph. After a cold, dry start to the weekend, it’ll turn a bit milder on Sunday in the Mid-Atlantic/Northeast US, but then another strong cold front will arrive early next week and this system will usher in the coldest air of the season so far. By Tuesday, temperatures will be way below-normal and winds will be quite strong to go along with the possibility of some snow shower activity. After a couple of quieter days on Wednesday and Thursday (Turkey Day), yet another cold shot should work its way into the northeastern quadrant of the country as “high-latitude blocking” sets up to our north.
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It’ll turn noticeably milder this afternoon in the DC metro region on the back side of high pressure which will result in an S-SW low-level flow of air. The warm up intensifies on Thursday just ahead of the next strong cold front and temperatures are likely to climb towards the 70 degree mark during the afternoon hours. That cold front will usher in another colder-than-normal air mass for the end of the work week and the weekend and yet another cold air mass is destined to arrive into the Mid-Atlantic region early next week.
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It’ll be on the chilly side of normal for another day on Tuesday, but with little in the way of wind; especially, when compared to yesterday. A noticeable warm up will take place on Wednesday afternoon with temperatures climbing towards the 65 degree mark and then likely towards 70 degrees on Thursday afternoon just ahead of the next strong cold frontal system. That front will usher in another colder-than-normal air mass for the late week and the first half of the weekend as high pressure building into the Mid-Atlantic region.
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One of the highlights of the Winter Outlook issued last month was the signal that there could be a quick start to winter in the Mid-Atlantic/Northeast US during the latter part of November and in of December. We have now reached the mid-point of November and there are some near-term signals that support the idea of a quick start to winter in the Mid-Atlantic/Northeast US. After a couple of chilly days to start this week, it’ll turn noticeably milder on Wednesday and Thursday, but then a strong cold front will usher in another colder-than-normal air mass for the end of the week and first half of the weekend. Looking ahead, there is the potential for Thanksgiving week to become cold and stormy perhaps leading to that quick start to the winter season in this part of the nation.
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A “clipper-type” system will push into northern New England today and high pressure will build into the Mid-Atlantic region and take control of our weather into mid-week. Winds will become rather strong from a W-NW direction and temperatures will be confined to the mid-to-upper 40’s for afternoon highs. It remains quite chilly on Tuesday, but then becomes noticeably milder on Wednesday and Thursday ahead of the next frontal system. Showers are possible late in the day on Thursday with the arrival of that next cold front and its passage will usher in colder air for the end of the week.
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