There was intense heat across the Pacific Northwest earlier in the week and also quite a hot spell in the Mid-Atlantic region with strong upper-level ridging the main culprit in both parts of the nation. The heat in the Mid-Atlantic will transition to much cooler conditions by the time we get to the end of the work week and early part of the holiday weekend. This change will come about with numerous strong-to-severe thunderstorms and torrential rainfall with localized flooding a real threat. The weekend will start off quite a bit cooler-than-normal in the Mid-Atlantic and also very unsettled with deep upper-level low pressure moving directly overhead, but improvement and warming will come later in the weekend.
Elsewhere, an impressive tropical wave exited off of the west coast of Africa last week and it is now churning over the central Atlantic. We certainly could be dealing with a “tropical storm” nearing the Caribbean Sea by the end of the week and this system will have to be closely monitored heading into the first full week of July.
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Surface high pressure over the western Atlantic will continue to pump warm and humid air in to the southeastern states over the next couple of days. At the same time, an upper-level low will drop from the Great Lakes to a position over the Mid-Atlantic region by the early part of the upcoming weekend. As a result, it’ll stay unsettled here for the next few days with a daily threat of showers and storms. The weather improves for the holiday weekend with sunshine likely on both days and increasingly warmer conditions.
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The weather for the next few days in the eastern 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 become southwesterly on the backside of the high and this system will continue to pump in very warm and humid air into the Tennessee Valley. There will be a chance for daily showers and thunderstorms through the week and some of the rain can be heavy at times.
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The weather for the next few days in the eastern 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 become southwesterly on the backside of the high and this will bring hot and humid air into the Tennessee Valley. There will be a chance for daily showers and thunderstorms through the week and the potential exists for some heavy rainfall.
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High pressure will intensify off the east coast over the next couple of days and this will promote a southwesterly flow of air in the lower atmosphere across much of the eastern half of the nation. As a result, we’ll experience increasing levels of heat and humidity in northern Alabama and the chances of showers and thunderstorms will also be on the rise. It looks like the unsettled, very warm and humid conditions will continue through at least the first half of 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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It will turn a bit warmer today in the Tennessee Valley and temperatures should reach the upper 80’s during the afternoon hours. It’ll approach the 90 degree mark on Friday and Saturday with an increasing chance of showers and thunderstorms to follow for the weekend and early part of next week. 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 US by early July.
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It will turn a bit warmer today in the Tennessee Valley and temperatures should reach the mid 80’s in the afternoon. It’ll approach the 90 degree mark on Thursday and Friday with an increasing chance of showers and thunderstorms by the time we get to the weekend.
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It won’t be as warm today in the Tennessee Valley as it was on Monday following the passage of a surface cold frontal system and temperatures later tonight will drop to comfortably cool levels in the upper 50’s. It’ll turn warmer tomorrow and then approach the 90 degree mark on Thursday and Friday with an increasing chance of showers and thunderstorms.
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Tropical Storm “Claudette” has moved into the eastern part of North Carolina after dousing the southeastern states with some heavy rainfall this weekend and it’ll exit the coastline later in the day. The main weather story of the next few days around here will be the arrival of another pretty comfortable air mass for the middle of the week preceded by a strong cold front. Temperatures today are likely to climb to the upper 80’s ahead of the front, but will turn somewhat cooler on Tuesday and lows tomorrow night should be in the 50’s. There will be the threat for showers and thunderstorms during the next 24 hours or so ahead of the approaching frontal system.
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