Our stretch of nice weather with generally rain-free conditions and comfortable temperatures and humidity levels is coming to an end. High pressure that has been to our north in recent days will shift off the east coast over the next 24 hours and this shift in location will open the door for much more humid air to push into our region and with it will come the threat of more numerous showers and scattered thunderstorms. The chance for showers here will increase markedly by later today and that threat of rain will stick with us all the way into the first half of next week and there can be thunderstorms mixed in as well.
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High pressure to our north continues to control the weather around here and it’ll produce another couple of comfortable days in the region. This system will push off the coast on Wednesday and this shift in location will open the door for warmer, more humid air for the latter part of the week and a renewed threat of showers and thunderstorms. The threat for rain looks like it’ll return here in earnest by later tomorrow and tomorrow night and then last through the upcoming weekend on the backside” high pressure system.
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High pressure to our north continues to control the weather around here and it’ll stay quite comfortable for a couple of more days. The high pressure system will shift off the coast at mid-week and this will begin a warm up for the second half of the week and higher humidity levels. Temperatures should hold in the 70’s for highs for the next couple of days, but then climb later in the week and into the weekend with 90 degrees possible by Sunday. The threat of showers will return on Tuesday and that threat of rain is likely to last through the upcoming weekend.
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A cooler-than-normal air mass will push into the region early this weekend resulting in very comfortable temperatures for the weekend and also for the first half of next week. While there will be plenty of sunshine during the weekend and the early part of next week, the atmosphere will become somewhat unsettled given the unusually cool air aloft and this can result in a shower from time-to-time. High pressure to our north will be the main player this weekend and early next week and there will be an upper-level trough slowly dropping southward into the Carolinas.
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A slow-moving cool front will bring us occasional showers today and there can be a strong thunderstorm mixed in as well. A cooler-than-normal air mass will push into the region early this weekend resulting in comfortable temperatures for the weekend and the first half of next week. The atmosphere will become increasingly unsettled, however, with the combination of cool air aloft and a slow-moving upper-level trough moving in overhead. Showers cannot be ruled out later Saturday and there is a likelihood for showers on Sunday, Monday and perhaps Tuesday as well.
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Low pressure over the Great Lakes region will intensify today and a trailing cold front will approach our area from the northwest. The approach of the front will increase the chance of showers and thunderstorms around here by day's end and it'll keep it unsettled tonight and on Thursday as it drags very slowly through the region. A cooler-than-normal air mass will push into the region early this weekend resulting in more comfortable weather conditions on Saturday and Sunday and the cooler-than-normal weather will stick around into the early part of next week. With cooler air aloft, the weekend and early part of next week will become somewhat unsettled and showers will likely be a threat on Saturday, Sunday and Monday.
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High pressure will push off the coast today and this will allow for much warmer air to move into the Mid-Atlantic region from the southern states. A frontal system will approach the area late Wednesday and increase the chance of showers and thunderstorms and then this same front will stall out in the area and weaken later in the week. Another frontal system will follow early this weekend and it can bring us a chance of showers and thunderstorms on either weekend day.
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A “derecho” is defined as a widespread, long-lived wind storm associated with bands of quickly moving showers and thunderstorms. Although a “derecho” can produce destruction similar to that of a tornado, the damage typically occurs in one direction along a relatively straight path. By definition, if the extent of wind damage is for more than 250 miles, includes wind gusts of at least 58 mph along its path, and also includes several, well-separated wind gusts of 75 mph or greater, then the event may be classified as a “derecho”. One such event took place last Wednesday, June 3rd, across much of Pennsylvania and New Jersey - and some are still feeling the impact.
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High pressure will control the weather today in the Mid-Atlantic region and provide us with plenty of sunshine and comfortable conditions, but it’ll turn warmer on Tuesday after it shifts off the east coast. A cold front will then approach from our northwest on Wednesday night – perhaps accompanied by showers and thunderstorms – and then it may stall out and slowly weaken around here later in the week. Another cold front is likely to arrive from the northwest early in the weekend. Elsewhere, the remains of Tropical Storm Cristobal will push northward over the next few days producing heavy rainfall all along the Mississippi Valley from the Gulf of Mexico to the Canadian border.
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There are two important weather stories here at the end of the work week with continued very unsettled weather conditions in the Mid-Atlantic region and also tropical depression Cristobal which remains just inland over the Yucatan Peninsula region of Mexico at mid-day. The surge of summer-like heat and humidity into the Mid-Atlantic region on Wednesday was accompanied by severe thunderstorm activity and a stalled out frontal boundary zone will remain the focus area for showers and thunderstorms over the next 24 hours or so. Any rainfall in the Mid-Atlantic region can be heavy at times with the potential of localized flash flooding and any thunderstorm that forms can be strong-to-severe with gusty winds.
Meanwhile, tropical depression is parked inland over Mexico, but it is likely to move back out over the open warm waters of the Gulf of Mexico and take a turn to the north this weekend. There is a chance that Cristobal – the third named tropical system of this young tropical season – will close in on the north-central Gulf coastal region by the end of the weekend and all eyes from the Panhandle of Florida to Texas should remained focused on this threat.
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