The frontal system that edged off the east coast early yesterday has stalled-out and it will act as a conduit for tropical moisture to ride up along during the next 24 hours or so. As a result, there will be occasional rain today, tonight and on Saturday and strong thunderstorms are possible along the way. Many area lawns welcomed beneficial rainfall on Wednesday night from strong thunderstorm activity and there can be an additional couple of inches of rain during the next 24 hours. In fact, as much as 3 or 4 inches of rain is on the table for some spots given this overall setup and flash flooding may become a concern. The threat of rain will diminish on Sunday and temperatures will climb noticeably with highs likely in the low-to-middle 90’s. It stays hot in the Monday-to-Wednesday time period with afternoon temperatures well up in the 90’s on each of those days. Looking ahead, the upcoming heat wave will likely come to an end by Thursday with the mid-week passage of a cool front.
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Powerful storms rocked the Mid-Atlantic and Northeast US late yesterday and last night and cleansed the atmosphere of the high heat and humidity…at least for a few days. One of the ingredients involved with yesterday’s unstable atmosphere was a cold frontal system that has edged off the east coast On Thursday morning; however, we are not done yet with this system. That cold front will stall out later today right along the east coast and copious amounts of tropical moisture will ride up along its boundary zone from tomorrow into Saturday leading to additional showers and thunderstorms around here and some of the rain will be heavy. The high heat of recent days has backed off for the next few days, but it will return in full force in the Mid-Atlantic region for the Sunday, Monday, Tuesday, Wednesday time period and 100 degree highs are on the table.
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Powerful storms hit the Mid-Atlantic region and Northeast US late yesterday and last night and this has cleansed the atmosphere of the high heat and humidity of recent days. A cold front was the main culprit of the instability and this system has pushed to a position just off the east coast; however, we’re not done with it yet. The cold front stalls out today along the coastline and tropical moisture will ride northward along the boundary zone on Friday increasing our chances once again for showers and thunderstorms. Some of the rain on Friday and Friday night can be heavy at times. The threat of showers and storms will continue on Saturday, but then decrease for the Sunday, Monday and Tuesday time period. The high heat of recent days will return in full force by early next week with afternoon high temperatures on Sunday, Monday, and Tuesday likely to be well up in the 90’s.
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A rather widespread severe weather event is likely across much of the interior Northeast US and Mid-Atlantic region from this afternoon through tonight and tornadoes are certainly on the table. The main area of concern for tornadic activity extends from south-central Pennsylvania to upstate New York and Vermont...areas not usually thought of when it comes to tornado threats. The atmosphere is becoming increasingly unstable this afternoon given the combination of ingredients that includes high heat and humidity, low-level wind shear, and an incoming cold frontal system. The chance of showers and thunderstorms may decrease some on Thursday, but then it should rise again on Thursday night and Friday when moisture from a newly developing tropical wave enters the picture. This system will add some “fuel to the fire” by the end of the work week adding to chance for some heavy downpours on Friday along the eastern seaboard. The high heat of recent days will back off some on Thursday, Friday, and Saturday, but then will return in full force once again for Sunday, Monday, and Tuesday.
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Humidity levels remain very high this morning in the Mid-Atlantic region with dew points - a direct measure of overall humidity - well up in the 70’s along much of the I-95 corridor. The high heat remains as well with temperatures likely to soar into the 90’s for afternoon highs making for very uncomfortable conditions indeed. The heat will back off some on Thursday, Friday, and Saturday, but is to return in full force by early next week with temperatures likely to soar well up into the 90’s on Sunday, Monday, and Tuesday.
In terms of rainfall, there will be an enhanced chance of showers and thunderstorms during each of the next few day and any rainfall can be very heavy at times. The combination of tropical moisture and a stalled-out frontal system will keep the atmosphere quite unstable through the second half of the week and when some daytime heating is added into the mix, the result is likely to be the development of numerous showers and thunderstorms during the afternoon and evening hours.
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It’ll be another day featuring high heat and humidity in the Mid-Atlantic region with weak high pressure in control of the weather. Temperatures later today should peak in the middle 90’s and humidity levels will be very uncomfortable with dew points in the 70’s. While there can be an afternoon or evening shower and thunderstorm, a much better chance for rain comes in the Wednesday-to-Saturday time period and some of the mid and late week rain can be heavy at times. The combination of the tropical moisture associated with Beryl’s remains and a stalling out frontal system near the coast will enhance chances here for some heavy rainfall beginning later tomorrow and likely continuing right into the upcoming weekend. The remnants of Beryl are currently centered over southwestern Arkansas and they’ll move northeast rapidly reaching the Ohio Valley by later tomorrow and this positioning will add to the instability along the eastern seaboard at mid-week.
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Weak high pressure in the eastern states will slide east during the next couple of days and it’ll remain quite hot and humid around here with a small shot at PM showers and thunderstorms. Temperatures today and Tuesday should peak in the lower 90’s and it’ll stay very warm on Wednesday as well. By mid-week, the remnants of Hurricane Beryl will pass by to our northwest and it’ll combine with a frontal system to enhance the chance for heavy rainfall around here late Wednesday and Thursday and potentially into Friday and Saturday as well.
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High pressure will remain east of here through the weekend and a couple of frontal systems will generate some instability in the atmosphere. As a result, it’ll remain hot and sticky for the next couple of days and there is the threat for showers and thunderstorms both today and on Saturday. Any thunderstorm that forms can be strong and produce locally heavy rainfall. It quiets down a bit for Sunday and Monday and overall rain chances will diminish somewhat.
Elsewhere, Hurricane Beryl is now a category 2 storm and it will cross the Yucatan Peninsula today. The movement over land will likely weaken Beryl to tropical storm status and then it could strengthen this weekend -even back to hurricane levels - as it pushes over the warm waters of the southwestern Gulf of Mexico. A turn to the NW late this weekend could bring landfall on Sunday night/early Monday to the southern part of Texas.
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High pressure pushes offshore today and this re-positioning will allow hotter and more humid air to flow northeastward into the Mid-Atlantic region for the Independence Day holiday. The atmosphere becomes more unstable as well with the arrival of a surface trough of low pressure raising the chance for afternoon or evening showers and thunderstorms. Any thunderstorm that forms later today or tonight can be strong and produce locally heavy rainfall. Hot and sticky weather will continue on Friday and Saturday as will the threat of showers and thunderstorms; however, much of the time will be rain-free.
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High pressure stays in control of the weather around here for another day, but the overall pattern becomes more unsettled on Thursday as the high shifts offshore and an upper-level trough starts to have an influence in this area. Today will feature plenty of sunshine, still moderate humidity levels and warm conditions with afternoon highs in the middle 80’s. It turns hotter and more humid for the 4th of July Independence Day holiday and stays hot and sticky through the upcoming weekend. In addition, the atmosphere will become more unstable on Thursday...enough so to increase the chance for afternoon and evening showers and thunderstorms and any thunderstorm that forms can be strong and produce locally heavy rainfall. The threat of showers and thunderstorms will continue on Friday and Saturday as well to go along with the very warm and humid conditions as a cool front slowly advances in this direction from our northwest.
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