The grounds are already well saturated in the DC-to-Philly corridor after recent soaking rains and there is more significant rainfall on the way. Tropical moisture is riding northward from the Caribbean Sea and Gulf of Mexico and it is now firmly entrenched in the eastern third of the nation. Disturbances in the upper atmosphere will head our way from the Midwest over the next several days and tap into this abundant moisture and the result is likely to be downpours later this week and during the upcoming weekend.
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High pressure will push off the east coast later today and this will open the flood gates for more tropical moisture to advance northward from the southeastern states. As a result, the threat for rain will increase by later tonight and there can be some significant rain around here during the latter part of the week and during the upcoming weekend. In fact, this wet pattern looks like it will continue right into the early part of next week.
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There is the potential for significant rainfall later this week as the remains of Tropical Storm Alberto interact with other slow-moving systems in the eastern US. High pressure will try to control our weather through much of Wednesday, but once it shifts off the Northeast US coastline, the flood gates will be opened for tropical moisture to push northeastward from the southern states. The heaviest rain threat likely comes in the Thursday to Friday night time period.
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There will be a couple of frontal systems to deal with in the Mid-Atlantic region over the next few days and they will keep it somewhat unsettled around here. The normal high temperature in NYC for this time of year is right around 72 degrees and we’ll be slightly above that for much of the week. There are signs that the tropics will get active by the weekend and there may be a system headed towards Florida or the eastern Gulf of Mexico. The “official” start to the Atlantic Basin tropical season is June 1st.
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Low pressures are riding along a stationary frontal boundary zone and they will spread more significant rainfall into the region from tomorrow into Saturday night. As a result, flooding is still a concern due to well-saturated grounds and flash flood watches continue in much of the Mid-Atlantic region. This same frontal system will push north later tomorrow as a warm front and this will lead to warmer weather conditions on Sunday and highs near 80 degrees. Elsewhere, it looks like the tropics will come to life in about a week or so with a possible system headed towards Florida or the eastern Gulf of Mexico.
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Our very wet weather pattern will continue into the weekend and localized flash flooding will become an increasing concern. The frontal system that moved through late Tuesday remains in close proximity and waves of low pressure will impact the region over the next few days. One low pressure system will push offshore later this afternoon and there can be a bit of a break in the rain in the overnight hours. However, a stronger low pressure systems will impact us with steadier and heavier rain from later tomorrow into Saturday. The stationary front that has stuck around this area will lift north as a warm front late Saturday and there is hope for some sunshine on Sunday along with noticeably warmer conditions.
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The grounds are already well saturated in the DC-to-Philly-to-NYC corridor after recent soaking rains and there is more significant rainfall on the way. As a result, localized flash flooding will become an increasing concern over the next few days as we’ll continue to get hit by rounds of showers and thunderstorms. In fact, many spots in the I-95 corridor may receive 3-5 inches of rain between this afternoon and Saturday night and this is on top of all of the recent rainfall.
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The cold front that passed through our region last night accompanied by showers and strong thunderstorms will stall out today just to the south and east of here. It’ll be noticeably cooler today behind the frontal system with temperatures some 20 degrees lower than yesterday. The close proximity of this same front over the next several days along with an influx of tropical moisture from the Southeast US will keep our very wet weather pattern in place into at least the weekend with additional rounds of showers and thunderstorms.
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Severe thunderstorms capable of producing damaging wind gusts, hail, frequent lightning and even a few tornadoes are likely late today/early tonight in parts of the Mid-Atlantic region and Northeast US. In addition to these particular weather threats, there are signs that “training” of thunderstorms may take place in some sections later tonight where multiple storms track over the same areas potentially leading to excessive rainfall amounts and localized significant flash flooding issues. Yesterday’s severe weather outbreak was focused in areas to the south of the PA/MD border, but today’s threat should be highest from eastern Pennsylvania to southern New England. This overall very wet weather pattern looks like it will continue right into next week for much of the eastern third of the nation.
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Severe thunderstorms are a late day/evening threat as a cool front approaches the area from the northwest. Any storm late today/early tonight can contain damaging wind gusts and hail and the rainfall with this system can produce flash flooding in some spots. Temperatures should soar today to summer-like levels in the upper 80’s following the passage of a warm frontal system and there will be higher humidity values as well. This front will stall just to our south tomorrow and remain in close proximity for the next several days resulting in additional rounds of showers and thunderstorms going into the early part of next week. In addition to the instability caused by the nearby frontal boundary zone, tropical moisture from the Southeast US will become intertwined in the overall weather pattern enhancing our chances for excessive rainfall amounts between now and early next week.
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