It’ll be relatively mild for another day on the front side of a cold front with afternoon temperatures likely climbing to the lower 50’s. As the cold front approaches, low pressure will form along its boundary zone and there will be some rain from later today into the overnight hours. As the colder air rushes in later tonight, the rain can mix with or change to snow for a brief time during the wee hours of Thursday morning. Watch out for slick spots late tonight/early Thursday given the combination of a brief period of snow and the rapidly falling temperatures. Temperatures on Thursday will struggle to climb above freezing and the teens are likely for overnight lows going into early Friday morning.
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It’ll turn slightly milder today with afternoon high temperatures near 50 degrees and it’ll stay mild on Wednesday as well ahead of the next cold frontal system. As the cold front approaches, low pressure will try to form along its boundary zone and there will likely be some rain from later tomorrow into late tomorrow night. As the colder air moves in late tomorrow night, the rain can mix with or change to snow before the precipitation ends early Thursday. The remainder of the week and weekend will feature some cold air and multiple disturbances can cause snow shower activity at times.
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After a couple of moderately cold days to start the week in the Mid-Atlantic region, it’ll turn milder on Wednesday ahead of the next cold frontal system. That mid-week cold front will usher in a colder air mass later this week, and it appears the overall weather pattern is setting up for multiple cold air outbreaks during the second half of January, and this will include the possibility of extreme cold.
In addition, the evolving weather pattern will likely be quite active as well featuring strong high pressure ridging near Alaska, high latitude blocking across northern Canada, and a large-scale and intense trough of low pressure centered over the eastern states. Multiple short-wave streams of energy will rotate through the large-scale trough, and each will have to be monitored to see if they can produce any appreciable snowfall in the Mid-Atlantic region.
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The week will start off with dry weather and moderately cold conditions following the passage of a cold front on Sunday and another cold frontal passage is expected on Wednesday. Ahead of the next cold front, it’ll turn milder on Wednesday and there can be some rain shower activity. After that, the weather pattern gets quite active across the eastern states and a storm system can develop in the colder air mass on Thursday bringing the chance of snow or rain changing to snow in the Mid-Atlantic region…lots of details remain to be ironed out.
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The next couple of days will feature some rainfall in the Mid-Atlantic region with showers likely later today/early tonight and then more widespread rain on Saturday. The showers later tonight and early tonight will be associated with a weakening frontal system and then low pressure lifts from the Great Lakes to southeastern Canada on Saturday bringing soaking rain to this area…some of the rain on Saturday can be heavy at times. It’ll be rather mild today with temperatures climbing into the 50’s, but then they’ll likely hold in the 40’s on Saturday, and it turns colder by later Sunday and Monday (and windy as well) after the passage of a cold front.
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Much warmer-than-normal air that originated over the Pacific Ocean has enveloped much of the nation this week and some of this will reach the northeastern states on Friday with high temperatures likely well up in the 50’s in many locations. It’ll turn out cooler on Saturday with a soaking rainfall, but still warmer-than-normal for this time of year. The milder weather will come to an end later this weekend with the passage of a strong cold front that’ll usher in colder and windy weather conditions for later Sunday into Monday.
By later next week, some important changes will begin to take place in the upper atmosphere across North America. First, an intense upper-level ridge of high pressure is likely to form near Alaska and the west coast of Canada replacing a trough of low pressure that has dominated that region in recent weeks. At the same time, an upper-level trough of low pressure will deepen over the eastern half of the US in response to a more active subtropical jet stream that has been largely missing in action in recent weeks. This combination will increase the chance for additional cold air intrusions into the US from Canada beginning later next week and can increase the chance for storms to develop across the southern and eastern states.
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The passage of a weak cold front last night may knock off a few degrees from yesterday’s high temperatures, but we should still reach into above-normal territory. It becomes even milder on Friday and Saturday ahead of the next cold frontal system with temperatures on both days likely nearing 60 degrees. Occasional showers are likely on Friday to go along with those milder conditions and there will be periods of rain on Friday night and Saturday...some of the rain can be heavy at times. A cold front passes through the Mid-Atlantic region on Saturday night and it’ll turn chilly Sunday and even colder on Monday.
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A warm front has pushed northward through the region and temperatures today will respond accordingly and climb well up into the 50’s for afternoon highs. The passage of a weak cold front later tonight may knock off a few degrees for Thursday, but then temperatures will climb to the 60’s on Friday and Saturday. Occasional showers are likely on Friday to go along with those quite mild conditions and periods of rain are quite likely on Saturday and some of that rain can be heavy at times. A strong cold front passes through the Mid-Atlantic region on Saturday night and it’ll turn moderately colder for Sunday and Monday.
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The new work week started off on the chilly side in the Mid-Atlantic region with temperatures below normal for early January however, a warming trend begins today and it’ll reach a peak on Friday and Saturday ahead of the next strong cold front. There may be some light rain or drizzle at times through tonight and some patchy fog as well as a warm frontal system pushes through the area. After a mild and dry day on Wednesday, the passage of a weak cold front at night will knock a few degrees off the temperatures on Thursday, but then they’ll soar on Friday and Saturday to go along with wet conditions on both days. The second half of the weekend will feature windy and moderately colder conditions following the passage of a strong cold front during Saturday night and the early part of next week will begin on the chilly side.
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It has been persistently cold in the northeastern states from around Thanksgiving Day to the present time with the month of December being observed as the coldest since 2010 in many spots including Washington, D.C. and New York City. A warmer weather pattern is on the way, however, which will bring noticeably milder conditions to the region in the Wednesday through Saturday time period. The peak in temperatures will come on Friday and Saturday for the northeastern states, but both of those will feature some rainfall dampening the mood a bit. The next strong cold front looks like it’ll arrive in the eastern states late on Saturday, and its passage will reverse the warmer trend by the time we get to the second half of the upcoming weekend and the early part of next week.
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