A stalled-out frontal system has turned around and pushed northward through the region as a warm front paving the way for a hot and humid afternoon and high temperatures in the middle 90’s. A cold front approaches the area late today and then stalls out nearby on Friday keeping it unsettled with the chance of showers and thunderstorms. It remains unsettled this weekend with a continuing chance of showers and thunderstorms and then a cold front pushes through on Sunday night paving the way for a comfortably warm start to next week.
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The combination of a tropical air mass, a stalled-out frontal boundary zone, and an upper-level disturbance will “re-ignite” the atmosphere this afternoon and the result is very likely to be yet another round of heavy showers and strong thunderstorms for much of the DC-to-Philly-to-NYC corridor. With the likelihood of flooding downpours and the well saturated grounds, flash flood watches have been issued throughout the Mid-Atlantic region by the National Weather Service. This stalled-out front system will turn around by tomorrow and push to the north as a warm front and the heat and humidity should reach a peak in the afternoon with highs up in the 90’s in many places. A cold front then pushes through the northern Mid-Atlantic region later Thursday night into early Friday and it then stalls out across the southern Mid-Atlantic later in the day. As a result, the corridor from Philly to New York City will see a big break in the humidity on Friday, Friday night, and much of Saturday, but the stalled-out front will keep it unsettled and moderately humid in and around the DC metro area. The humidity does build back up again throughout the Mid-Atlantic region for the second half of the weekend and the chance of showers and thunderstorms will also make a return.
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It’ll remain quite warm and humid today and unsettled with a good chance of late day and evening showers and thunderstorms...some of the rain can be heavy. The frontal system that stalled out in the area on Tuesday will begin a push to the north later today as a warm front adding to the instability in the atmosphere. Following the passage of the warm front, tomorrow will likely turn out to be the hottest day of the week with highs in the lower 90’s and there will be a continuing chance for showers and thunderstorms. The next cold front arrives on Friday - potentially with another round of showers and thunderstorms. It appears this front will clear the coast by Friday night paving the way for lower humidity to start the upcoming weekend.
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It’ll remain warm and very humid today and somewhat unsettled with isolated showers and thunderstorms likely during the afternoon and evening hours (shouldn’t be as widespread as yesterday). The strong cold front that pushed into the region late yesterday is stalling out and it’ll turn back to the north on Wednesday likely leading to an enhanced chance tomorrow of showers and thunderstorms. Following the passage of the warm front, Thursday could turn out to be the hottest day of the week with highs in the low-to-mid 90’s and a continuing chance for showers and thunderstorms. The next cold front arrives later Friday - potentially with another round of showers and thunderstorms - and, if we’re lucky, it may just clear the coast and result in a decent start to the weekend with lower humidity.
One final note, as a follow-up to yesterday’s “Home Run Derby” posting, the longest HR hit last night in a hot and humid Atlanta was 513 feet by Oneil Cruz of the Pirates (4th longest in Derby history) and the winner was Cal Raleigh of the Seattle Mariners. Next years All-Star game and HR Derby will be played in beautiful Citizens Park of South Philadelphia as part of the 250th birthday celebration for the country.
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The combination of a tropical air mass, a slow-moving surface cold front, and an upper-level disturbance raises the chance for afternoon and evening showers and thunderstorms in the Mid-Atlantic region. And, as has been the case quite often in recent days, some of the storms can be strong-to-severe and flooding downpours are on the table with a few inches possible in some spots in a short period of time. While flash-flooding is the greatest concern in this scenario, isolated damaging wind gusts are also possible later today associated with “downburst-type” thunderstorm activity. Looking ahead, while the threat of showers and thunderstorms may diminish on Tuesday, it is likely to rise again at mid-week as a stalled-out frontal system makes a turnaround and heads back to the north as a warm front.
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The All-Star break has arrived for big-league baseball which always features a Home Run Derby that’ll take place this evening in Atlanta, Georgia and the All-Star game will be played on Tuesday night. The weather looks quite hot and humid both for tonight’s Home Run Derby and tomorrow’s game and Tuesday can feature scattered showers and thunderstorms in the area. The high heat and humidity expected for this evening in Atlanta should be quite favorable for baseballs to carry so there are likely to be some mammoth shots in Truist Park. Winds will not be much of a factor during the next couple of nights, but a recent detailed analysis confirms the notion that winds can be highly influential in the distance a ball can travel and there were some surprising findings.
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It’ll remain very warm, humid, and unsettled this week with showers and thunderstorms from time-to-time. Any thunderstorm that forms in this tropical environment can reach strong-to-severe levels with flooding downpours and damaging wind gusts on the table. A strong cold front will slowly cross the region later today, stall out nearby on Tuesday, and then push northward later Wednesday as a warm front. Another cold front approaches towards the end of the week.
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It’ll remain very warm and humid through the weekend with patchy fog around early today and again late tonight/early tomorrow. There will be weak disturbances moving through from time-to-time generating scattered showers and thunderstorms; primarily, during the afternoon and evening hours. A string front crosses the area early next week likely with some strong thunderstorm activity and it’ll remain very warm and humid for much of next week.
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Our unsettled weather pattern continues today and scattered showers and thunderstorms are possible; however, the rainfall shouldn’t be as heavy or as widespread as it was during the past couple of days and severe weather risks should be rather limited. A weak frontal system will meander in the Mid-Atlantic region through the weekend keeping it unsettled through the period and then a stronger front should arrive on Monday and strong thunderstorms will be possible. It will be a bit cooler today with afternoon highs in the middle 80’s…no intense heat is in sight.
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In general, it is much the same story as yesterday in the Mid-Atlantic region as far as the weather is concerned with the chance of late afternoon and early evening strong-to-severe thunderstorms along with possible flooding downpours. One minor difference from yesterday will be perhaps a bit later arrival time for the storms in the I-95 corridor as we’re looking at the late afternoon or early evening hours in many spots. Like yesterday, the ingredients are there for strong-to-severe thunderstorm activity and possible downpours including an upper-level trough, a slow-moving surface frontal system, and a humid air mass. The unsettled weather pattern continues from tomorrow through the upcoming weekend with a daily shot at showers and thunderstorms and much of next week looks unsettled as well.
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