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Another day of hot and very humid weather is expected on Tuesday across Western and Central Mass. Fortunately, Tuesday will be the last day with 90-plus degree temperatures for a while. High temperatures Tuesday afternoon will be between 90 and 95 Degrees with heat index readings of around 100 Degrees. A frontal boundary is expected to push slowly southward into the area during Tuesday afternoon and Tuesday evening. The forcing from the front combined with the high heat and humidity is likely to trigger quite a bit in the way of thunderstorm activity from about mid-afternoon into the early evening hours. There’s the possibility that a couple of the thunderstorms could be on the strong side bringing the threat for wind gusts to 40 to 50 mph. The bigger threat, however, will be some heavy downpours and frequent lightning with any of the thunderstorms. One thing that we’re going to have to watch for during the mid and late afternoon hours of Tuesday is the possibility for thunderstorms to train over one area. Should this occur, it could lead to a localized flash flood issue as it would rain very heavily over one spot for a prolonged period of time. At this point, it appears that the time frame for thunderstorm activity Tuesday will be from about 2-3 pm until about 8-9 pm. Wednesday & Thursday: That frontal boundary will become stationary across our region during Wednesday into Thursday. While some cooler temperatures are likely, it is expected that the humidity levels will remain high. So, warm and muggy, instead of hot and oppressive for Wednesday and Thursday. An area of low pressure is expected to ride along this frontal boundary for Wednesday night and Thursday and it appears that it’ll bring some very much needed rainfall in the way of widespread showers for late Wednesday night into Thursday. At this point, the area that looks to see the most beneficial rainfall of up to one inch possible is near and south of the Mass Pike. Areas north of the Mass Pike may end up seeing more in the way of scattered showers for Wednesday night into Thursday. High temperatures Wednesday will be between 75 and 80 Degrees with humid conditions. Low temperatures Wednesday night will be near 65 Degrees. High temperatures Thursday will be near 80 Degrees with humid conditions. Friday Through Sunday: FINALLY, relief from the humid weather is expected for the end of the week through this weekend. Dew point temperatures are expected to be in the 50s throughout Friday, Saturday and Sunday making things feel very comfortable. Friday is expected to be partly sunny with high temperatures between 75 and 80 Degrees. Saturday and Sunday both look sunny with high temperatures between 75 and 80 Degrees.

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Oppressive heat and humidity is expected this afternoon across the entire area under partly sunny skies. Temperatures will be between 90 and 95 Degrees with heat index readings of 98 to 103 Degrees expected. Given the hot and extremely humid conditions, it’s not going to take much to develop quite a bit in the way of cumulus and cumulonimbus clouds this afternoon. As for the thunderstorm threat this afternoon, analysis reveals that the area that has the best chance of seeing scattered thunderstorms will be near and especially north of the Mass Pike between about 3 pm and about 9 pm. Like yesterday, any thunderstorms will be the pulse/garden variety type of storms with locally heavy downpours and frequent lightning strikes the main threat.

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For The Rest Of This Afternoon: Hot and humid weather is expected the rest of this afternoon under a mixture of sunshine and clouds. In addition, some very isolated showers and thunderstorms are possible, especially from late afternoon to about sunset. Most areas, however, will stay dry. Any thunderstorms will be non-severe with the main threat being locally heavy downpours and lightning. Temperatures will be around 90 Degrees with heat index readings of 95 to 100 Degrees. Winds will be Northwest at 5 to 10 mph. Tonight & Saturday: Any thunderstorms will dissipate quickly just after sunset with a mixture of lots of clouds and some stars during the overnight hours. Low temperatures will be between 70 and 75 Degrees with oppressive amounts of humidity. Winds will be Southwest at 5 to 10 mph. Another hot and humid day is expected on Saturday under partly sunny skies. Some isolated showers and thunderstorms are expected during the afternoon. Severe weather is not expected with any thunderstorms posing a threat of heavy downpours and lightning. High temperatures will be between 85 and 90 Degrees with heat index readings of 95 to 100 Degrees. Winds will be Southwest at 10 to 20 mph. Sunday & Monday: Hot and humid will continue throughout Sunday and Monday. Sunday is expected to be sunny to partly sunny with high temperatures between 90 and 95 Degrees with heat index readings of around 100 Degrees. Some isolated late afternoon showers and thunderstorms are possible. Winds will be Southwest at 10 to 20 mph. Monday looks partly sunny with hot and humid conditions. In addition, some scattered showers and thunderstorms are expected during the afternoon and evening as a frontal boundary slowly moves into our area. High temperatures will be near 90 Degrees with heat index readings of 95 to 100 Degrees. Tuesday Through Next Friday: That frontal boundary is expected to gradually push through the area during Tuesday through Wednesday before pushing offshore by Thursday. This slow movement of the front combined with a very tropical air mass could lead to some beneficial rainfall for some areas of Western and Central Mass. Tuesday looks cloudy and there may be at least scattered, if not widespread showers and possible thunderstorms, especially during the afternoon and at night. High temperatures will be near 80 Degrees. Wednesday also looks cloudy with widespread showers and possible thunderstorms. High temperatures will be between 75 and 80 Degrees. Thursday is expected to be partly sunny with high temperatures between 80 and 85 Degrees. Next Friday looks partly sunny with high temperatures between 80 and 85 Degrees.

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