The atmosphere will quickly destabilize today in the Mid-Atlantic region raising the chance for severe thunderstorm activity later today and early tonight. Any thunderstorm can produce large hail, damaging wind gusts and even isolated tornadoes. Torrential rainfall can lead to flash flooding conditions in the Mid-Atlantic region; especially, in those areas hit hard by downpours this past weekend. The threat for strong-to-severe thunderstorms will continue on Tuesday and the overall wet weather pattern looks like it’ll resume at week’s end after a short-break and continue into the first half of next week.
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A very unsettled weather pattern continues for the Mid-Atlantic region during the next couple of days that will include the chance for severe thunderstorms and torrential downpours. Any storm later today and tonight can produce hail, damaging wind gusts and even an isolated tornado. Torrential rainfall can produce localized flash flooding conditions. Low pressure will push to the Great Lakes today and a cold front will edge its way into the eastern states and this frontal system will not clear the area until mid-week. Later today, the upper-level support of low pressure over the Great Lakes will tend to become “negatively-tilted” and that will enhance upward motion in the region resulting in an increasingly unstable atmosphere and the potential of those severe thunderstorms. Weak high pressure should improve overall conditions by Thursday, but unsettled weather returns going into the weekend.
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After an unseasonably cool day on Thursday, it’ll turn slightly warmer today, but still below-normal for this time of year. The atmosphere will remain quite unstable with the chance of showers and thunderstorms and this unsettled pattern is likely to last well into next week. Some of the rain today in the DC metro region can be heavy at times and some of the storms can be strong. Temperatures should peak in the mid-to-upper 70’s this afternoon and then reach 80+ degrees this weekend and early next week. A cool front will enter the picture later Monday enhancing the chance for strong-to-severe thunderstorm activity in the Mid-Atlantic region.
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The overall weather pattern has evolved into one that will be considerably wetter for the Mid-Atlantic region in coming days compared to what was experienced earlier this month and during May. Today will be unseasonably cool with a persistent ocean flow of air (i.e., east-to-northeast winds) given the combination of high pressure to the north and low pressure to the south. There can be a shower from time-to-time today or some patchy drizzle, but significant rainfall is not looking too likely. More rain is destined to arrive here later tonight and for Friday and there can be a thunderstorm or two mixed in…some of the rain late tonight and tomorrow can be heavy at times. A daily threat of showers and thunderstorms this weekend looks like it will continue through much of next week. Conditions do turn warmer on Friday and then temperatures likely reach into the 80’s during the weekend and early part of next week.
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Lawns were turning brown and soil moisture was at very low levels earlier this month and during the month of May in much of the Mid-Atlantic region. There have been a couple of rain events in the past couple of weeks that have alleviated the dry conditions; especially, in areas to the north of the PA/MD border. The overall weather pattern is now evolving into one that will bring copious amounts of rainfall to the Mid-Atlantic region in coming days and it may get to the point in which many will say “we’re now getting too much of a good thing”.
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A wet weather pattern is unfolding for much of the eastern US including the Mid-Atlantic region which has been quite dry in recent weeks. An upper-level trough situated over the Tennessee Valley will edge northward in coming days and with it quite a moist air mass. There will be occasional showers here today and a daily threat of showers and thunderstorms from tomorrow into early next week. In terms of temperatures, the next couple of days will feature below-normal conditions as a stiff easterly flow of air brings in cooler marine air to the area. By the end of the week and for the upcoming weekend, conditions will become noticeably warmer with high temperatures back to the 80’s on Friday, Saturday and Sunday.
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The Atlantic Basin tropical scene has come to life in recent days with two systems located in the tropical Atlantic. The front running system has reached named tropical storm status (“Bret”) and it could very well intensify into a hurricane during the next couple of days as it heads towards the eastern Caribbean Sea. Later in the week, however, a few factors are likely to come together to cause a weakening of this initial tropical system. A second system following closely behind Bret could reach named tropical storm status as well in coming days (would become “Cindy”) as it heads on a general westward track.
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The weather is becoming more unsettled in the Mid-Atlantic region and there will be a daily shot at rain from today right through the upcoming weekend. High pressure to our north combined with low pressure to our south will intensify an easterly flow of air at the lower levels of the atmosphere keeping us on the cool side of normal during the next few days and quite moist. As we head to the weekend, the weather will turn warmer and the threat of showers will continue with thunderstorms will be added to the picture. Elsewhere, the tropical Atlantic has come to life with a couple of systems to monitor. The front running system has reached tropical storm status (now named “Bret”) and it can become a hurricane in the near-term; however, weakening is likely for this system thereafter as we head towards the weekend.
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High pressure builds southward into the northern Mid-Atlantic today and then the weather will get unsettled for much of the remainder of the week. Low pressure and a large area of moisture will dominate the scene in the southeastern states this week and this system can spread showers to the north at times into the Mid-Atlantic region. Elsewhere, the tropical scene has come to life in the eastern Atlantic and a couple systems will have to be monitored in coming days. The front running system is very likely to intensify into at least tropical storm status over the next few days, but it is unknown whether its ultimate path will take it to the Caribbean Sea or if it will shift to the north and east of the Windward Islands. The second system has a smaller chance of intensifying into tropical storm status.
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Low pressure will drop southeast from the Great Lakes today bringing a widespread rain event to the Mid-Atlantic region. Occasional showers and thunderstorms will begin as early as mid-day in many areas, some of the rain is likely to be heavy at times and some of the thunderstorms can be strong-to-severe. This system should then push only slowly northeast, meander over New England on Saturday, and it’ll keep it slightly unsettled here with breezy conditions and the chance for a shower across some northern sections. Father’s Day Sunday promises to feature plenty of sunshine in the Mid-Atlantic region and warm conditions.
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