Slow-moving low pressure will slide to our south and east during the next 24 hours and produce cool, wet conditions in the I-95 corridor with an onshore flow of air. Weak high pressure is to push in on Friday providing a break in the action, but another slow-moving low will bring us a threat for rain on Saturday and Sunday as the overall active weather pattern continues across the nation.
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Slow-moving low pressure will impact the region with periods of rain from later today into Thursday and there can be a couple of thunderstorms mixed in as well. This system will slide to our south and it’ll finally give way to weak high pressure at the end of the week. Another period of unsettled weather is coming this weekend with additional rain likely in the Mid-Atlantic region.
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High pressure will be in control of the weather as we begin the new work week, but unsettled weather is on the way back. Slow-moving low pressure will impact the region with showers from later tomorrow into Wednesday and then another low pressure system can result in another round of rain here from later Friday into Saturday. High pressure will move in for a brief appearance in between these two systems making for a partly sunny and comfortable day on Thursday.
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An upper-level trough will rotate over the Mid-Atlantic region today and it will be followed close behind by a second system that will keep it very unsettled around here right into Sunday, Mother’s Day. There will be periods of rain today and it will be unseasonably chilly with an ocean flow of air keeping temperatures way below-normal for this time of year. It stays on the cool and unsettled side this weekend with temperatures likely confined to the lower 60’s for highs on Saturday and the upper 50’s on Sunday and there will be the threat of showers from later tomorrow into Sunday. High pressure takes over early next week and it will turn warmer on Monday with the return of some sunshine.
One final note, there has been a lot of activity on the sun in recent days with a very large sunspot region known officially as AR3664 having unleashed as many as five coronal mass ejections towards Earth. One of the main ejections will arrive into Earth’s upper atmosphere on Saturday, May 11th, and it can spark geomagnetic storms as can a couple to follow close behind later this weekend. Watch for auroras as far south as Virginia during this weekend event which is being classified as a category 4 “severe” geomagnetic storm…rarely seen in recent years.
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A complex and unsettled weather pattern is in store for the Mid-Atlantic region during the next couple of days that will include some rain and noticeably cooler conditions. An upper-level trough will push east from the Midwest into the Mid-Atlantic region and help to generate these unsettled conditions with an initial shower threat here later in the day. It has turned cooler compared to recent days and will become even cooler on Friday to go along with periods of rain as we close out the work week. It stays on the cool and unsettled side this weekend with temperatures likely doing no better than the lower 60’s on Saturday for highs and perhaps confined to the upper 50’s on Sunday to go along with the threat of showers from time-to-time.
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The overall weather pattern across the nation remains quite active as we push into the second week of May and this includes continuing threats of severe weather. Earlier this week, severe weather took place across Oklahoma and Texas with numerous tornadoes reported and the threat zone on Tuesday shifted to the Ohio Valley. Today’s greatest threat of severe weather will be focused on the Middle Mississippi and Tennessee Valleys and, once again, tornadoes will be on the table. The severe weather threat on Thursday will shift a bit to the east and south and likely extend all the way across the Gulf states from Texas-to-Georgia and up along the eastern seaboard to around the Delmarva Peninsula/southern New Jersey region.
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A stalled-out frontal system will push to the north today and its passage will bring us mid-morning showers and thunderstorms and then a summer-like afternoon with temperatures well up in the 80’s and humid conditions. Low pressure will slide north of here on Thursday likely bringing occasional rain to the area and maybe a strong thunderstorm or two. This low pressure system will drag a cold front through the region on Thursday night and its passage will usher in a cooler air mass for Friday, Saturday, and Sunday.
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A frontal system will stall nearby today and a series of disturbances will track along this boundary zone over the next few days. Each of these disturbances will raise the chance of showers and thunderstorms with the best chance of rain likely coming on Thursday when strong low pressure passes through the region. This late week low pressure system will drag a cold front across the area and it’ll turn cooler for Friday, Saturday, and Sunday.
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This will be an unsettled week in the Mid-Atlantic region with multiple chances of rainfall following a very cool and wet weekend. It turns warmer today with afternoon highs in the low-to-mid 70’s, and there will be the chance of showers with the approach of a cool frontal system. This front will then stall nearby and a series of disturbances will track along this boundary. Low pressure will move across the Mid-Atlantic region on Thursday and it'll drag a cold front through by the end of the week.
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It turns cooler today despite partial sunshine as a low-level flow of air out of the east-to-northeast brings in marine air from the western Atlantic Ocean…all supported by building high pressure over New England. This cool down will intensify over the weekend with both days featuring quite cool conditions, plenty of clouds, and a high risk of some rain. Looking ahead, it appears the wetter pattern that begins this weekend will continue next week as there will be numerous chances for rain.
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