Tuesday August 24 2021 Forecast (7:39AM)

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DAYS 1-5 (AUGUST 24-28)

I have to mention Henri one more time, because kind of in keeping with the “personality” of the system, its remains have been slow to exit, along with an upper low, with a cloudy and damp start to our weather today resulting. However, improvement is coming, and will take place from later morning onward as the clouds finally dissipate and clear out from west to east, along with any lingering showers and patches of drizzle. However, there will be a quick warm-up as this happens and dew points are high, so a very warm and muggy afternoon is in store, and as high pressure builds in with the air mass source region being quite warm, we have hot and humid weather for Wednesday and Thursday. A cold front approaching the region late Thursday and passing through during Thursday night will bring the chance for a shower or thunderstorm but it appears that such activity will be limited. High pressure builds in for Friday – still warm but turning drier. After that, a back door cold front will swing down the coast Friday night and introduce a cooler air mass for the start of the weekend.

TODAY: Cloudy start with patchy fog, areas of drizzle, and isolated showers. Clearing west to east late morning on leading to a mostly sunny afternoon. Highs 82-89. Dew point lower 70s. Wind NW up to 10 MPH.

TONIGHT: Clear. Ground fog patches. Lows 66-73. Dew point upper 60s. Wind W under 10 MPH.

WEDNESDAY: Sunny. Highs 86-93. Dew point upper 60s to 70. Wind W up to 10 MPH.

WEDNESDAY NIGHT: Mostly clear. Ground fog patches. Lows 68-75. Dew point upper 60s to 70. Wind SW under 10 MPH.

THURSDAY: Partly cloudy. Highs 87-94. Dew point upper 60s. Wind SW 5-15 MPH.

THURSDAY NIGHT: Partly cloudy. A shower or thunderstorm possible. Patchy fog. Lows 65-72. Dew point middle to upper 60s. Wind SW 5-15 MPH.

FRIDAY: Mostly sunny. Highs 80-87. Dew point falling through 60s. Wind NW to N 5-15 MPH.

FRIDAY NIGHT: Mostly clear. Patchy ground fog. Lows 56-63. Dew point falling to middle 50s. Wind N to NE up to 10 MPH.

SATURDAY: Mostly sunny. Highs 70-77, coolest coast. Dew point middle 50s. Wind NE to E 5-15 MPH.

DAYS 6-10 (AUGUST 29 – SEPTEMBER 2)

August 29 (end of weekend) becomes partly cloudy and a bit warmer and more humid as the front that came by at the end of the week comes back as a warm front, and this leads to warm and humid weather with a chance of a few showers at times for the last couple of days of the month in a southwesterly air flow. Cold front excpected come by with an additional shower threat September 1 before drier air arrives for the first couple days of the new month.

DAYS 11-15 (SEPTEMBER 3-7)

Disturbances time out for around September 4 & 7 with shower threats, otherwise high pressure in general control with mostly dry weather.

53 thoughts on “Tuesday August 24 2021 Forecast (7:39AM)”

      1. That’s why in years and decades past these were missed.

        They’ve always been around, previously reported as just strong wind gusts and showing up on reports as “wind damage”.

        This is a classic case of better detection / observation / reporting due to the combination of current radar tech, population density, and ease of recording and communicating information.

        1. thanks. Agree 100%

          There were some awesome photos. Pretty cool.

          When I was in high school, we were fishing at Farm Pond in Sherborn and on mostly clear day. And this vortex was spinning its way across the pond stirring up the water like you wouldn’t believe. I am sure the spinning air was in the 60-70 mph hour range. It was so cool and was perhaps 25-50 feet wide is all. No visible cloud, just spinning air.

          If it were over land it would have been powerfui enough to blow lawn furniture and decorations around pretty good, but NOT cause any meaningful damage.

        2. Interesting day none-the-less

          I told my wife if we were in the path of one of these, that we would NOT have to head to the basement. We could just continue with our business, except I would be at a window
          trying to capture video. 🙂 🙂

  10. Thanks, TK.

    We never had thunder or lightning yesterday. Just some showers; some were heavy. During the night I think we got heavier rain. But yesterday, about the time of the tornadoes, particularly when rotation was seen in the Sudbury area, I was looking out our kitchen window towards the west. There was an assortment of all types of clouds and blue sky. But to the west, an area of dark clouds were moving south to north. They didn’t touch the ground but were pretty close. I can’t say it was a wall cloud. Just looked like a fast moving thunderstorm. It then got very dark to the north. A little later I learned of the tornado in Stow, which is the next town to the west here in Sudbury. I wonder if I was seeing the beginning of that tornado, ‘though I saw no rotation. Also, around that time, the tv got staticy for a moment – I believe that means a tornado is near. I never saw static like that before. Lots of rotation in the skies yesterday.

  11. 1.69 inches in the Logan gauge. A new record for the date, in fact.

    It certainly poured enough last evening.

    Will Logan be challenging August rainfall records like it almost did in July?

    3. You do recall Logan’s rainfall record for August correct? Won’t even be in the parking lot of the same ballpark. 😉

  12. Thanks, TK…

    We recorded 2.4″ last night in about six hours. My son said that roads were flooded in Assonet. We had about 30 minutes of “soft” thunder around 10:30-11.

    Blue skies and sun now, though!

  14. I have a bunch of wedding photos. My daughters have more. But I want to share two.

    Thank you to all here for the wonderful support and advice leading up to what looked to be in question of happening. TK….your messages to me were invaluable. I love you all!

    Against far too many odds to count, the downpours ended just as the outdoor reception began on Sunday evening and started again just after it ended. No question in my mind that Mac was with us.

    https://imgur.com/a/FsGYfPT

    https://imgur.com/a/yjuRsWP

    1. Truly beautiful photos, Vicki. Both are priceless. There is no question Mac was there with you all.

  15. 2.77″ total for Henri here at the StormHQ World Headquarters Compound – 0.61″ on Sunday, 2.16″ from last night’s stuff

    On tropical tornadoes – I spent the entirety of Hurricane Bob in the WeatherLab at ULowell, where I was the Lead Forecaster for the student-run weather center. It was just myself and one student (the Weather Center Director), the entire time. Our professor was there for a while, but not the entire storm. The Lowell Sun somehow found out that we were there and sent a reporter over to do a story on us and interview s (I still have a copy of it somewhere). While the reporter was there, a funnel cloud went right by the building. We were watch it go across the street, but lost it behind trees and other buildings. I don’t know if it ever touched down or not, but I’m guessing it didn’t, since it was never reported elsewhere – but we did get it documented in the Sun article.

  16. Last August, prior to the arrival of Isaias, I looked up how many recorded tornadoes occurred during tropical cyclones. This is what I found:

    An F1 tornado in Worcester and Middlesex counties and the town of Princeton in an outer band of Tropical Storm Allison, June 17, 2001.

    An F1 tornado in Holliston MA (Middlesex County) during Hurricane Gloria, September 27, 1985.

    I think that’s it for Massachusetts.

    None for Rhode Island.

    I understand that tornadoes might have happened in other storms that may have been rain-wrapped or undetected. Mark and JJ, sorry, I never got around to looking at Connecticut. 🙂 If I have a minute or two later, maybe I will check data for CT!

    1. I think we had one in JP during Gloria. There was no NWS investigation as the damage was isolated to a very small area
      and the home owner(s) just assumed it was hurricane damage.
      I looked at the damage and I never saw so many trees down in one small area like that. That was 1987, but I do remember
      at the time saying that it was a tornado. I only saw the aftermath and it looked to me like the tress were down in a circular pattern and not straight line. This thing flattened a garage and I mean flattened it. Garage was some 40 feet or so from house, so there was no damage to the house and miraculously, not a single tree touched a house. Note; the yards were huge.

      So is it documented. Nope Was it a tornado, I am certain of it.
      the wind at the time was just not capable of that damage.

      So there you go, the hidden JP tornado of 1987.

  17. I find it amusing that we got the worst of Henri on the return trip yesterday/last evening as opposed to its arrival on Sunday. I can’t recall a tropical system ever doing anything like that.

    1. We’ve had similar, but that particular set-up is fairly rare. Since Henri itself was such a small system, the chance of larger impact on approach and first passage was less. When it came back it was transformed into a remnant surface low with a decent upper level disturbance above it – so in this case it was not much of a surprise.

      I noted that many areas would have more “fanfare” in the weather department from last week’s Fred event, and the return of Henri back to the east, than they did from Henri’s initial arrival.

      Other than southwestern New England (rainfall) and the South Coast (wind), that is pretty much exactly how it went.

  18. Cool ! I did not know this story (funnel cloud). I lived 5 or so miles from north Campus. Lots and lots of rain that day in Lowell and a couple days later, the Merrimack River was very, very high after having been at its low summer flow. Loved watching the river in flood at Pawtucket Falls heading down past north Campus.

  21. I was thinking, today thru Thursday, right after Henri, is usually what happens on the Gulf Coast, Florida and SE US coast.

    Right after the storm goes by, it goes back to being hot and humid down there.

    Today thru Thursday, that would have been fun to be without A/C with lost power, eh ?

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