The weekend was very chilly in the Mid-Atlantic region and it was accompanied by a soaking rain event which was actually beneficial (despite its poor timing) due to the recent dry spell. It looks like more significant rainfall is on the table for Thursday and Thursday night and it could include strong-to-severe thunderstorm activity. The combination of an increasingly moist flow of air, surface frontal system, and a slow-moving upper-level trough will raise the prospects for the rain and potential severe weather in the Mid-Atlantic region.
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After a very chilly and wet Saturday and Sunday, the holiday weekend closed out on a nice note with the return of sunshine and much milder conditions. High temperatures over the weekend were confined to the lower 50’s in much of the NYC metro region – some 25 degrees below normal for late May – but they did rebound nicely on Monday. It’ll remain much closer to seasonal warmth during the next few days and a frontal system promises to bring us more beneficial rainfall during the second half of the week. Looking ahead, it looks like it’ll get quite warm this weekend with highs likely to be well up in the 80’s on both days.
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Not the best of timing, but a well-needed and soaking rainfall is on the way for the Mid-Atlantic region as we begin what will be a very cool Memorial Day weekend with temperatures as much as twenty degrees below-normal. Low pressure will move from the Midwest on Friday to the coastal waters of the Mid-Atlantic by later tomorrow and it’ll combine with high pressure to the north to generate a chilly rainfall over a widespread area. It'll remain very cool and unsettled on Sunday with a few lingering showers possible and then increasing amounts of sunshine and noticeably milder conditions are likely on Monday, Memorial Day...very likely to be the best weather day of this long holiday weekend.
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Temperatures remain quite warm today across the Mid-Atlantic region, but dew points have come down noticeably since last night’s frontal passage. Big changes are coming by the weekend, however, with respect to temperatures that could drop to as much as twenty degrees below-normal for the late stages of the month of May. Low pressure will move from the Midwest on Friday to the coastal waters of the Mid-Atlantic by later Saturday and it’ll combine with a building high pressure system across southeastern Canada to generate the first widespread and soaking rain event in weeks for the Mid-Atlantic region. It’ll remain very cool for this time of year on Sunday and unsettled with lingering showers possible. The best weather day of the long holiday weekend is quite likely going to be Monday with increasing amounts of sunshine and noticeably milder conditions.
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After a warm day on Thursday, the tide will turn quite dramatically by the weekend with respect to temperatures as high pressure begins to build into southeastern Canada. At the same time, low pressure will strengthen over the Midwest and trek across the Mid-Atlantic reaching the coastal waters by later Saturday. As a result, a chilly, widespread and beneficial soaking rain event is coming to the region from later tomorrow into Saturday. It'll remain very cool and unsettled on Sunday with a few lingering showers possible and then increasing amounts of sunshine and noticeably milder conditions are likely on Monday, Memorial Day...very likely the best weather day of this long holiday weekend.
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Temperatures have surged today in the Mid-Atlantic region ahead of an approaching frontal system and humidity levels have climbed dramatically as well. The combination of very warm and humid air, a strong surface front, and vigorous energy aloft will lead to scattered strong-to-severe thunderstorms later today and early tonight. Any strong-to-severe storm that forms can potentially produce damaging wind gusts and large hail. After another warm day on Thursday (but less humid), temperatures will begin a downward trend on Friday as high pressure builds to our north into southeastern Canada. Low pressure will trek from the Midwest on Friday to the Mid-Atlantic coastal waters by later Saturday producing a beneficial soaking rain event in the Mid-Atlantic region as a very chilly Memorial Day weekend gets underway.
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Temperatures today should spike to 90 degrees in the NYC metro region following the passage of a northward-moving warm front and there will be the chance for late afternoon and evening showers and thunderstorms. Some of the storms later today and early tonight can reach strong-to-severe levels with the potential of damaging wind gusts. It’ll remain warm on Thursday, but then building high pressure into southeastern Canada will begin a downtrend in temperatures at week’s end and it stays cooler-than-normal through the upcoming holiday weekend. At the same time we start to feel the effects of cooler ocean air, low pressure will trek from the Midwest on Friday to the Mid-Atlantic coastal waters on Saturday. This system will result in the first widespread soaking rain event in some time for the Mid-Atlantic region. It'll remain cooler-than-normal on Sunday with continuing unsettled conditions, but much improvement is likely on Monday, Memorial Day.
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Last weekend was very warm in the Mid-Atlantic region with highs in many places like Philly and Washington, D.C. above the 90 degree mark on both days…this weekend will be quite a different story. The Memorial Day weekend has been unofficially called the beginning of the summer season, but it will be anything but beach weather this time around in the Mid-Atlantic region. Anyone who has been a long-time resident of this area knows that an ocean flow this time of year can result in highs in the 50’s and 60’s rather than the more desired 70’s and 80’s. In addition to the cooler-than-normal conditions expected this weekend, it looks like it will get started with a chilly, but beneficial rainfall from Friday into Saturday.
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After the much cooler weather of yesterday, warmer air will begin to push northeastward today on a change of wind direction to southerly from Monday's onshore flow and then a surge of unseasonably warm air is likely to arrive here on Wednesday. The surge of warmth on Wednesday will follow the passage of a northward-moving warm front and temperatures later tomorrow are likely to end up in the lower 90's with the threat of PM showers and thunderstorms. A cold front will drop to the southeast on Thursday from the Great Lakes region and high pressure will begin to build into southeastern Canada. As a result, temperatures will begin a downward trend late in the week as onshore flow forms in the Mid-Atlantic region and low pressure is likely to result in a chilly rain event from Friday into Saturday. Improving conditions are possible later this holiday weekend although it'll stay on the cool side.
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Anyone who has been a long-time resident of the Mid-Atlantic region knows that despite being dubbed the “first weekend of the summer”, Memorial Day weekend can actually turn out to be quite ugly with chilly and damp conditions. Indeed, the overall pattern appears to be setting up for just such weather conditions in the Mid-Atlantic region – at least for part of the upcoming long holiday weekend. All it takes this time of year to go from warm weather in the 70’s and 80’s to chilly weather in the 50’s and 60’s is for a strong high pressure system to build into the Northeast US or southeastern Canada. Indications are that this very well may happen this weekend likely resulting in anything but beach type weather for the Mid-Atlantic region.
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