The overall weather pattern is evolving to one that will bring very comfortable air to the Philly metro region as we end the month of July and begin the month of August, but it may a rough time getting to that point with severe weather a threat later today and early tonight. A complex of severe thunderstorms blasted through Wisconsin in the overnight hours from northwest-to-southeast and this line will play a key role later today in the Mid-Atlantic region. Indeed, there is the potential for severe weather to include all the parameters from hail-to-heavy rain-to-tornadoes. Following the passage of a strong cold frontal system, very comfortable air will push in on Friday and the comfortable weather pattern will last through much of next week as well – the first full week of August.
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The overall weather pattern is evolving to one that will bring very comfortable air to the Mid-Atlantic region as we end the month of July and begin the month of August, but it may a rough time getting there with severe weather a threat on Thursday. A complex of severe thunderstorms will blast through Wisconsin in the overnight hours from northwest-to-southeast and this line will play a key role on Thursday in the Mid-Atlantic region. There is the potential later tomorrow for severe weather in the Mid-Atlantic region to include all the parameters from hail-to-heavy rain-to-tornadoes. Once the cold frontal system passes through the region, quite comfortable air will push in on Friday riding along on stiff northwest winds and the comfortable weather pattern will last through much of next week as well – the first full week of August.
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A couple of cold frontal systems will play a role in our weather during the next several days and the end result in the Mid-Atlantic region is quite likely to be some pretty comfortable air for the end of July and the beginning of August. The first front will arrive later tomorrow and it could bring some strong thunderstorm activity into the area and then comfortable air will follow for Friday and Saturday. A second front should arrive early next week and it too should usher in some pretty comfortable air for much of the first week of August.
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While much of the nation from the Northern Plains to the Pacific Northwest has experienced hotter-than-normal weather this month, the Mid-Atlantic region has enjoyed a nearly normal month in terms of overall temperatures. In fact, it appears the last couple of days of July can include some below-normal temperatures in much of the Mid-Atlantic region and the first week of August could turn out to be cooler-than-normal in much of the eastern US. In addition to the potential for cooler-than-normal temperatures in the Mid-Atlantic region next week, we’ll have to watch out for the possibility of a coastal storm.
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The overall weather pattern across the nation over the next few days will feature upper-level ridging centered over the Northern Rockies and an upper-level low over southeastern Canada. As a result, it’ll be hotter-than-normal from the Northern Plains to the Pacific NW, but northwest flow aloft over the Northeast US will prevent any extended period of heat around here. In fact, temperatures should trend downward in the I-95 corridor later this week to pretty comfortable levels for the end of July. Looking ahead, there are signs for pleasant air to push into much of the eastern half of the nation next week as we begin the month of August.
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The north-central and northwestern parts of the nation will experience warmer-than-normal conditions this week as upper-level high pressure ridging intensifies over that region, but northwest flow aloft across the Northeast US will bring some comfortable air this way. Our high temperatures are likely to be near 90 degrees for the next couple of days, but the more comfortable air will push this way for much of the second half of the week. Elsewhere, monsoonal moisture will continue to push into the “Four Corners” region of the Southwest US resulting in additional heavy rainfall for that part of the nation.
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A cool front passed through the region on Wednesday night and ushered in a comfortable air mass for the latter part of July. In addition, the new air mass helped to “cleanse” the atmosphere of the smoke-caused haze that dominated the skies earlier in the week. Temperatures and humidity will remain on the bearable side for the next couple of days, but it’ll get hotter and more humid for the Sunday-to-Tuesday time period and there will be an increasing chance of showers and storms.
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A cool front passed through the region last night and has ushered in a comfortable air mass for the latter part of July. Not only has the temperature and humidity dropped to more reasonable levels within this new air mass, the atmosphere has also been “cleansed” of the smoke-caused haze of recent days that was caused by wildfire activity in southern Canada. Reasonable temperatures will remain for Friday and Saturday and then it’ll turn hotter by early next week with an increased chance of showers and thunderstorms.
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The combination of an unstable air mass, surface frontal system, and an approaching upper-level trough is resulting in thunderstorm development across portions of the interior Mid-Atlantic at mid-day and some of these will make it into the I-95 corridor later this afternoon. Any afternoon or early evening thunderstorm can contain brief downpours, damaging wind gusts, hail and frequent lightning. The most unstable air seems to be situated over the Delmarva Peninsula and southern part of New Jersey and this zone can get especially hard hit later in the day with severe storm activity. The front should sweep away some of the haze that has been in the region during the past couple of days and it’ll be a refreshing day on Thursday with comfortable temperatures and humidity levels.
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The day begins with filtered-sunshine again as skies remain smoke-filled from wildfire activity across Canada and the NW US. A cool front will approach the region later in the day and bring with it an increased chance of showers and thunderstorms - some of the storms can be on the strong side. A very comfortable air mass for late July will follow the passage of the frontal system resulting in a nice day on Thursday and it'll stay pretty comfortable around here on Friday and Saturday as well.
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