Strong high pressure over the Great Lakes will control the weather in our area right into the early part of next week and there will be a cold frontal passage in tonight’s overnight hours. The incoming Canadian air mass for the weekend and early part of next week will be cooler-than-normal for this time of year, but still quite comfortable. By Tuesday and Wednesday of next week, shortwaves to our north and west will try to rotate into the Mid-Atlantic region increasing the chance of showers on both days.
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Strong high pressure over the Great Lakes will head in this direction and control the weather scene around here right into at least the early part of next week. The incoming air mass will be noticeably drier than recent days and cooler-than-normal; however, cooler-than-normal this time of year is quite comfortable. After the occasionally heavy showers of yesterday, it looks like it’ll be rain-free from today through at least the early part of next week with the strong high pressure system in full control.
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It stays on the unsettled side for another day in the Mid-Atlantic region with mainly cloudy skies, occasional showers, and maybe a thunderstorm…some of the rain can be briefly on the heavy side. High pressure from the Great Lakes will head this way for the late week and dominate the weather picture into early next week and it’ll turn noticeably drier compared to recent days. Temperatures will be cooler-than-normal, but that is on the comfortable side given the time of year and there should be an abundance of sunshine each day from tomorrow through Monday.
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El Nino is on the way, and it looks like it will be a strong event...
The equatorial Pacific Ocean is transitioning into El Nino conditions (i.e., warmer-than-normal sea surface temperatures) and signs point to a strong event by the summer and fall seasons with big implications on tropical activity in the Atlantic Basin. Looking ahead, it appears this El Nino event may even last into the upcoming winter season of 2026-2027 which no doubt would have some implications across the continental US.
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After our damp and chilly weekend, the weather will turn warmer today across the Mid-Atlantic region and there will be some shower activity in many areas to the south of the PA/MD border. The unsettled weather pattern can bring showers to all areas of the Mid-Atlantic later tonight and on Wednesday, but then it turns drier again for the late week, and the weekend is looking quite nice from this vantage point.
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In the wake of a cold frontal passage, today will turn out to be mainly sunny, dry, and mild, but the unsettled weather pattern will bring us another shower threat on Wednesday and there can be a PM thunderstorm as well. The upper-level trough of low pressure that will generate our unsettled weather conditions at mid-week will hang around until the end of the week, but important changes will then take place this weekend. Upper-level ridging of high pressure that has been stuck over the western states in recent days will move eastward and reach the northeastern part of the nation by later in the weekend. In fact, this high pressure system will intensify markedly early next week and this can result in 90+ degree afternoon highs in the Sunday, Monday, Tuesday time period across some portions of the I-95 corridor. The big-time warm up is likely to be a 3-day affair and temperatures should return to more seasonal levels during the middle of next week.
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Much of the week ahead will be rather cool and unsettled across the northeastern part of the nation with a persistent upper-level trough of low pressure sitting nearby. This upper air pattern will keep temperatures generally suppressed to below-normal levels in the Great Lakes, Mid-Atlantic and Northeast US and there will be a shower threat from time-to-time. By the weekend, important changes will take place as the upper-level trough over the northeastern US retreats off to the northeast and an upper-level ridge of high pressure edges its way into the area from the western states. This ridge will intensify early next week, and the result could be 90+ degrees in the Sunday/Monday/Tuesday time period in places along the I-95 corridor. Looking beyond, it appears that the big-time warm up early next week will not last too much longer as a frontal system next mid-week is likely to return temperatures to more seasonal levels.
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A cold front clears through the region today and after the chance of early day showers, partial sunshine should return in the afternoon across the area. It looks dry on Tuesday and there can be another shower threat at mid-week as an upper-level trough settles over the eastern states. Temperatures remain mild through much of the week and then turn quite warm as we head into the upcoming weekend.
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After a dry day to end the work week, an unsettled pattern will return on Saturday bringing the Mid-Atlantic region a chance of showers, maybe even an isolated thunderstorm. Another system has an even better shot at producing showers around here from Sunday night into Monday...sandwiched in between these two systems we’ll try to squeeze out a decent Mother’s Day with sun followed by late day clouds, but late day showers are possible. Yet another shower threat could reach the Mid-Atlantic by mid-week.
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There was some beneficial rainfall on Wednesday in the Mid-Atlantic as a cold front approached the region and there will be other opportunities for showers in coming days. After a dry day to end the work week on Friday, the next disturbance will arrive on Saturday and showers are possible in the area. By Sunday night and Monday, another system will increase the chance of showers as the unsettled weather pattern continues into the early part of next week.
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