It’ll be another very hot and humid day in the Mid-Atlantic region with high pressure still in control as it sits just off the eastern seaboard. The chance for showers and thunderstorms will increase later today and tonight and to a high level on Thursday and Friday as a slow-moving frontal system works its way into the area. In fact, there is a good chance that the next few days will include some very heavy rainfall as the front stalls out in the region and temperatures will trend downward. The holiday weekend is looking cooler-than-normal for early July and unsettled in the Mid-Atlantic region with rain still a threat as it gets underway. Much like the weather during the Memorial Day weekend, the weather will tend to improve as we head towards the Monday holiday (July 5th).
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The weather for Memorial Day weekend was quite cool in the Mid-Atlantic region with some rainfall as well and the best weather day turned out to be the Monday holiday. Unfortunately, there are some similarities between that holiday weekend and what could happen this 4th of July weekend. The high heat and humidity of today and Wednesday will transition to cooler conditions for the end of the week and for the upcoming holiday weekend and the conversion is likely to include some heavy rainfall and possible strong storms. In addition to the cooler-than-normal weather this weekend, it’ll remain unsettled in the Mid-Atlantic region and as with the Memorial Day weekend, the best weather day may turn out to be the Monday holiday.
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The weather for the next two days in the Mid-Atlantic region will continue to be controlled by strong high pressure over the western Atlantic Ocean - in the familiar “Bermuda-high” position. As a result, the low-level flow of air will remain from a southwesterly direction on the backside of the high and this system will continue to pump hot and humid air into the region. Temperatures both today and Wednesday will soar well up into the 90's for afternoon highs to go along with high humidity values. The chance for showers and thunderstorms will increase for the mid and late week time periods as a frontal system slowly inches its way towards the area. In fact, there is a good chance that the second half of the week will feature downpours as the front stalls out in the region and temperatures will trend downward. The holiday weekend is looking cooler-than-normal and quite unsettled in the Mid-Atlantic region with rain still a threat as it gets underway.
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The weather for the next few days in the Northeast US will be controlled by strong high pressure over the western Atlantic Ocean - in the familiar “Bermuda-high” position. As a result, the low-level flow of air will be southwesterly on the backside of the high and this will bring hot and humid air into the Mid-Atlantic region. The chance for showers and thunderstorms will increase by mid-week and we’ll have to watch the possibility of some heavy rainfall as we transfer to cooler conditions for the late week and weekend.
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Our comfortable weather conditions of the past couple of days will disappear as we head through the upcoming weekend with a noticeable rise in humidity levels and temperatures. High pressure will shift to over the western Atlantic over the next 24 hours or so and strengthen as well allowing for a stiffening southwesterly flow of air in the eastern US. With the increase in moisture this weekend, the threat of showers and thunderstorms will increase and the steamier weather and threat of rain will continue early next week.
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One big weather story in the near-term that will likely become a big news story is the heat that will intensify across the Pacific Northwest later this weekend and early next week. As high pressure expands and intensifies over the Pacific Northwest later this weekend, many places including Seattle, Washington will approach or surpass the 100 degree mark for afternoon highs. In fact, Portland, Oregon could actually surpass their all-time high temperature record of 107°F on Sunday afternoon. In the longer-term, another weather story may develop across the tropics. A strong tropical wave has just exited off the west coast of Africa and signs point to a favorable pattern for intensification down the road potentially leading to problems for the Gulf of Mexico/Southeast US by the time we get to the early part of July.
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Great weather will continue today in the Mid-Atlantic region with high pressure remaining in control and an air mass with comfortable temperatures and humidity levels still firmly in place. It’ll turn warmer and more humid as we head into the weekend and the chance of showers and thunderstorms will return to the area. Elsewhere, a heat wave will intensify later this weekend over the Pacific Northwest where temperatures could actually approach all-time highs in places like Portland, Oregon. Also, a strong tropical wave has just exited off of the west coast of Africa and it is something to keep an eye on and could have an impact on the Gulf of Mexico/Southeast US by early July.
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Spectacular weather takes place for the next couple of days in the Mid-Atlantic region with high pressure back in control and a very comfortable air mass firmly in place. It’ll turn warmer and more humid as we head into the weekend and the chance of showers will return to the area, but no significant rain event is likely through Sunday.
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A cold front is working its way through the region today and it won’t be as warm as it was on Monday and comfortably cool conditions will develop in the overnight. As the front pushes through today, there will be additional showers and some of the rain can be heavy at times. Spectacular weather is coming for Wednesday and Thursday with comfortable temperatures and humidity levels for the early part of the summer season.
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Another very comfortable air mass is headed to the Mid-Atlantic region and it will result in some very nice weather for the mid-week time period; however, we may have to deal with some strong-to-severe thunderstorm activity before we get there. A strong upper-level trough of low pressure is digging southeastward today across the Great Lakes and it is combining with a couple of surface-level cold fronts to produce strong thunderstorms in the Ohio Valley and western Mid-Atlantic. This thunderstorm activity is likely to reach the I-95 corridor by later today or early tonight and some of the storms can reach severe levels with potentially damaging wind gusts and hail. It won’t be as warm on Tuesday as the cold front works its way through the region and there will be a lingering chance of showers and storms. Much more comfortable air will be quite noticeable by tomorrow night with temperatures dropping way down in the 50’s in the overnight and it’ll remain very pleasant on Wednesday and Thursday.
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