Many parts of the Mid-Atlantic region and Northeast US were hit by downpours this past weekend and during the first part of this week and another extended period of unsettled weather is about to begin in these same areas. Similar to this last stretch, this upcoming unsettled weather period will include the chance of heavy downpours, localized flooding and strong-to-severe thunderstorms...something not particularly welcomed in many parts of the northeastern quadrant of the nation.
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An unsettled weather pattern returns to the Mid-Atlantic region later today and heavy downpours/strong-to-severe storms will be on the table during this extended active time period. High pressure will push to the east of here this morning opening the door for more humid air to flow back into the region from the Gulf of Mexico. With the increase in moisture, there will be an increasing chance of showers and thunderstorms by later today/early tonight and this renewed threat of rain is likely to continue right through the upcoming weekend.
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High pressure will produce another rain-free day around here with very warm and moderately humid conditions…afternoon temperatures likely peaking around the 90 degree mark. This same system will push to the east by Thursday opening the door for more humid air to push back into the Mid-Atlantic region from the Gulf of Mexico. With the increase in moisture, there will be an increasing chance of showers and thunderstorms by tomorrow evening and this renewed threat of occasional rain will continue through the weekend.
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High pressure to our west takes control of the weather today in the Philly metro region and it should result in rain-free conditions through mid-week. It will become quite warm, however, as temperatures climb well up into the 80’s today and to the 90 degree mark on Wednesday, but overall humidity levels will remain fairly comfortable. Later in the week, the humidity will climb to uncomfortable levels once again as a southerly low-level flow of air develops on the backside of high pressure which will shift to the east of here. With the rise in moisture, there will be an increasing chance of showers and thunderstorms in the Mid-Atlantic region both on Thursday and Friday and this renewed threat of rain will continue through the weekend as well.
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After a very wet weekend in the Mid-Atlantic, the weather will settle down over the next few days and a more comfortable air mass with lower humidity has pushed into the region from the northwest. There can still be isolated showers and thunderstorms later today; however, Tuesday and Wednesday should be rain-free and it’ll turn very warm. Humidity levels will build back up later this week and this will come with an increasing chance of showers and thunderstorms.
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Many parts of the Mid-Atlantic region were hit by downpours on Saturday and the threat for more torrential rain continues today as we close out the weekend. A vigorous system sliding east across the Ohio Valley will enhance upward motion in the region and low-level moisture remains high. As a result, any shower or thunderstorm that forms later today and tonight can produce significant rainfall amounts on top of what fell yesterday leading to flash flooding concerns. In addition, enough destabilization may occur in the atmosphere to help generate sever thunderstorm activity which could bring damaging wind gusts to many areas.
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The combination of high low-level moisture content and an incoming frontal system will keep the atmosphere quite unstable today in the Mid-Atlantic region. Some of the storms that form later today can be quite strong and some of the rain can be heavy. After perhaps a little bit of a reduction in the chances for rain on Saturday, a potent system is likely to drop southeast on Sunday from the Great Lakes to the Mid-Atlantic region. This system is likely to bring heavy rain to the Mid-Atlantic region on Sunday and potentially some strong-to-severe thunderstorm activity.
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The combination of high low-level moisture content and a couple of frontal systems will keep the atmosphere very unstable in the Mid-Atlantic region for the next few days. Any shower or thunderstorm that develops from later today into Saturday can produce heavy rainfall amounts given the high moisture levels and the expected slow movement due to an overall weak wind field and little steering flow. A potent system is likely to drop southeast on Sunday from the Great Lakes to the Mid-Atlantic region and this next system is likely to extend the chances for heavy rainfall and bring about a chance for severe thunderstorms as well.
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High moisture content in the lower part of the atmosphere and a weak frontal system stationed nearby can help to generate scattered afternoon and evening showers and thunderstorms in the Philly metro area. The unsettled weather pattern will continue on Friday as a cool front approaches the region from the west enhancing instability in the lower part of the atmosphere. Any shower or thunderstorm that forms over the next couple of days can produce significant rainfall amounts given the high moisture content and the expected slow movement of rain cells in the area. This active weather pattern will continue this weekend and a potent system headed this way for Sunday can result in a more widespread, heavy rain event for the Mid-Atlantic region.
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A nearby frontal system tends to weaken today and this will reduce the chances for rainfall somewhat; however, isolated-to-scattered PM showers and thunderstorms cannot be ruled out. The unsettled weather pattern returns later in the week and continues in full force through at least the first half of next week with a daily shot at showers and thunderstorms.
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