High pressure has built into the Mid-Atlantic region and it stays in control for the next few days and, at this point, the weekend is looking quite promising. Temperatures will still be on the cool side for the next couple of days and nights with highs in the 60’s and overnight lows in the 40’s, but by Friday afternoon, we ought to be at or slightly above the 70 degree mark. The weekend is looking quite promising with some sunshine likely on both days and comfortable temperatures throughout the Mid-Atlantic region.
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Low pressure pulled away from the region on Monday and now high pressure is building into the region and it’ll be the main player around here for the next few days. Temperatures will remain cooler-than-normal for the next few days with highs generally in the 60's and lows in the 40's. By the end of the work week, afternoon highs should flirt with the 70 degree mark and the weekend is looking quite promising from this vantage point.
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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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Strong thunderstorms have broken out across eastern West Virginia and southwestern Virginia and some of these may reach the DC-to-Philly corridor late in the afternoon or early tonight. This activity is being driven in part by an upper-level impulse that contributed to a large batch of heavy rain and strong thunderstorms across Kentucky earlier in the day. Clearing skies today in the I-95 corridor has allowed for a rapid warm up and destabilization of the lower atmosphere and moisture levels are sufficient to support strong-to-severe thunderstorm activity. The threat for severe weather is not likely to extend up to New York City or the northern/eastern parts of New Jersey as an onshore flow will keep the atmosphere more stable in those areas.
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It’ll become quite warm today with the return of sunshine and temperatures should climb well up into the 80's. Our unsettled weather pattern will continue with showers and thunderstorms likely from later today into later Wednesday...some of the rain can be heavy at times and some of the storms that form can be on the strong side. A cold front will push through by tomorrow night and high pressure will follow for Thursday with slightly 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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