This week will be a bit unsettled, but also non-impactful weather-wise. The end of the week is taking a trend toward being cooler.
MONDAY
Monday is going to be a beautiful mid-spring day for New England. Warm air aloft will help to bring mild temperatures to the surface for New England. A weak cold front moved through tonight and stall just south of New England. This front may begin to lift back north as a warm front.
This will keep the downright hot temperatures just to the south of New England. The Mid-Atlantic will see temperatures surge well into the 80s with some potentially exceeding 90° (Baltimore is looking at a high of 92°!).
New England will see more modest highs, the 70s for southern New England and the low 60s to low 70s in northern New England. The lower Connecticut River Valley and western Connectciut could reach 80°. With a weak pressure gradient, a sea breeze will likely develop keeping the coast noticeably cooler. The northern third of New England will also be cooler, likely hanging in the 50s. Clouds will be variable through the day.
TUESDAY & WEDNESDAY
Low-pressure takes over for Tuesday and Wednesday. A weak low pressure system will form along the frontal boundary to our south while a weak disturbance passes directly over New England. This will bring scattered showers across the region for both days. It looks like the showers will come through the region in waves.
The first round of showers will be lighter and generally more scattered. This will likely come through Tuesday morning. Most of Tuesday will likely end up dry, but pop up showers will be around. The second and more widespread showers will enter Vermont in the evening and track southeastward through the first part of the night.
HRRR showing expected weather Tuesday morning (1st image) and Tuesday evening (2nd image):
Showers will likely continue into Wednesday morning before gradually becoming more isolated for the afternoon. Neither Tuesday nor Wednesday will be close to a washout. There will be a chance for heavier downpours or thunderstorms, mainly across western New England.
Some isolated, minor poor drainage flooding is possible across western areas from these downpours. Total rainfall will be nothing to write home about, with most staying below a half an inch. Any thunderstorm or downpour will help boost totals locally. High temperatures both Tuesday and Wednesday will be much cooler as an easterly flow takes over.
THURSDAY & FRIDAY
Thursday will see another weak frontal system slide through. This will suppress a ridge of high pressure, leading to a mainly cloudy day with some showers possible. There is uncertainty on the extent of shower coverage as low and high pressure jockey for position, however, the day will very likely see more dry hours than wet hours.
Euro showing potential weather Thursday afternoon:
In a completely unsurprising turn of events, the end of this upcoming week is looking cooler than it did yesterday. This is thanks to that frontal system likely pulling a backdoor cold front across the region. This will keep the chilly, easterly flow off the ocean going through the end of the week. Both Thursday and Friday will likely see the typical temperature gradient from western areas versus eastern areas. There remains a spread among guidance in where temperatures will land, but cooler solutions are currently favored.
Euro, GFS and CMC showing temperature departure from average Thursday afternoon. You can see the spread between the models:
Friday does look drier than Thursday as the ridge of high pressure looks to win out, but skies may remain stubbornly cloudy. The extent of clouds cover on both Thursday and Friday will also play a role in temperatures.
WEEKEND
As of now, it looks like the weekend will be a continuation of Thursday and Friday. Saturday may see a ridge in place, but a disturbance is looking to pass through on its heels at some point during the weekend. This would represent the next chance for more widespread showers. Right now, it looks like these showers are aimed up for Saturday evening through Sunday morning, but timing of these features needs to be worked out as discrepancies remain.
Weather map for Saturday showing the ridge in place just to the east with a frontal system following quickly behind:
BEYOND
The generally cooler trend for this week may also allude to a generally cooler start to May as below average temperatures are now favored through much of the first half of the new month.
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