Our recent cool and unsettled weather pattern will continue as we begin the new work week with a cold frontal passage, plenty of clouds and maybe a shower or two. Strong high pressure will follow the frontal passage for Tuesday and Wednesday, but it’ll stay cooler-than-normal for this time of year. It should turn somewhat milder by the end of the week with temperatures getting closer to normal for the middle of May.
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An upper-level low pressure system will move over the northeastern quadrant of the nation today and keep it unsettled around here for the next couple of days. This system will result in unstable conditions in the atmosphere with unusually chilly air aloft for the early part of May. Any kind of early day low-level heating today and tomorrow will act to destabilize the atmosphere and the result is likely to be scattered afternoon showers on both days. There can even be a thunderstorm on Saturday afternoon and with the freezing level at such an unusually low level, small hail will be possible. Another low pressure system will head northeast on Sunday and is likely to bring us thickening clouds and more rain to the area later in the day and on Sunday night. The cool and unsettled weather pattern that is unfolding will likely last for the next ten days or so across much of the northern US.
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The overall weather pattern that is unfolding is going to disappoint those in the eastern 2/3rds of the nation who are looking for sustained warmth as we progress through the month of May. In fact, signs point to a continuation of colder-than-normal outbreak into this large stretch of the nation well into the second half of May. In some cases, these cold air outbreaks will result in low temperatures near or below freezing which is a threat to growers from the Rockies-to-Northern Plains-to-Upper Midwest and in some cases this pattern will result in significant accumulating snow (e.g., higher elevations in the Rockies).
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Our unsettled weather pattern will take a break today as high pressure takes control, but it will be breezy and on the cool side. An upper-level wave of energy will spin over the northeastern quadrant of the nation on Friday and this will result in unstable conditions with unusually chilly air aloft for the early part of May. Any kind of low-level daytime heating early in the day on Friday, Saturday and Sunday will act to destabilize the atmosphere and the result is likely to be scattered mid-day and PM showers. Looking ahead, this unfolding cool and unsettled weather pattern will likely last for the next ten days or so across much of the northern US.
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An unsettled weather pattern continues today in the Mid-Atlantic region with numerous showers ahead of a cold frontal system that will usher in a much cooler air mass for later tonight and Thursday. After a dry day on Thursday, unsettled and cool conditions will prevail on Friday, Saturday and Sunday as an upper-level trough of low pressure moves overhead. In fact, much of the northern US will experience unsettled and cooler-than-normal conditions for the next ten days or so and this will result in more accumulating snow in such places as the Rocky Mountain States.
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Our unsettled weather pattern will continue today with additional showers and a possible strong thunderstorm or two. A cold front is pushing towards the region and it will slide through by tonight ushering in a much cooler and drier air mass during the overnight hours. High pressure takes control on Thursday generating sunshine around here to go along with the cooler temperatures that follow the frontal passage. An upper-level trough will move overhead at week's end generating instability in the atmosphere and possible additional showers and the threat of showers will continue through the weekend as well.
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Early day clouds, drizzle and fog should give way to partial sunshine, but the threat for showers will return by day's end. The unsettled weather pattern will continue into late Wednesday with showers and thunderstorms possible until a cold front clears through the region tomorrow night. High pressure will follow the frontal passage for Thursday with cooler temperatures. An upper-level trough will move overhead at week's end generating some instability in the atmosphere and possible showers.
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The first half of the week will be quite wet across the Mid-Atlantic region with a nearby frontal system and several waves of low pressure moving along the frontal boundary zone. There is the chance of showers this afternoon and the chance for showers and thunderstorms will exist tonight, tomorrow and Wednesday. High pressure should follow on Thursday producing sunshine and slightly cooler conditions and then we’ll have to watch a coastal low at the end of the week which could skirt the region and produce additional showers.
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A cooler air mass will arrive in the region today following the passage of a strong cold front in the overnight hours and temperatures this afternoon will be confined to the 60’s for highs. Temperatures late tonight will drop into the lower 40’s which will be quite a change from the mid and upper 80’s that we experienced on Wednesday afternoon. While the cool down will be quite dramatic from the summer-like warmth at mid-week, the bigger story will be the winds which could gust past 50 mph later today and tonight – potentially resulting in downed limbs and power outages. The combination of a strong and intensifying low pressure system departing to our northeast and an approaching strong high pressure from the western Great Lakes will create an intense pressure gradient in the Mid-Atlantic region – and result in those potentially damaging wind gusts. The winds will die down later tomorrow and temperatures will climb noticeably from the chilly lower 40’s at the start of the weekend to near the 80 degree mark by later Sunday.
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The current warm spell in the Mid-Atlantic region that peaked on Wednesday afternoon will come to a halt with the passage of a strong cold frontal system in the early morning hours on Friday. A cooler air mass will arrive in the region on Friday and temperatures later tomorrow night will drop significantly into the lower 40’s for overnight lows – a far cry from the mid and upper 80’s experienced yesterday afternoon. While the cool down will be quite dramatic from the summer-like warmth on Wednesday, the bigger story will be the winds which could gust to the 50-60 mph range later tomorrow and tomorrow night – potentially resulting in downed limbs and scattered power outages.
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