Sunday Forecast

35 Comments

8:16AM

DAYS 1-5 (JULY 16-20)
There is a fair chance of observing the aurora borealis (northern lights) tonight as energy from a storm on the sun reaches the atmosphere. Looking north, the best chance to observe these will be away from natural lights and obviously under as clear a sky as possible. Do what you can for the first one and hope mother nature cooperates on the second. This update essentially has no changes from yesterday’s, so just a quick forecast and yesterday’s discussion generally applies. From here forward is basically yesterday’s. The weather pattern will undergo the first part of a transition in which a hot ridge of high pressure establishes itself in the western US. What tries to be a passing trough through the northeastern US will shear apart with a piece moving along to the east and the other part dropping to the south and cutting off from the flow over the southern Great Lakes and Ohio Valley when it will then start to drift slowly to the east. This, along with a weak surface high trying to stay established off the East Coast means Monday-Thursday turn somewhat more humid and run the risk of a few showers and thunderstorms at times.
TODAY: Partly cloudy. Highs 77-86, coolest South Coast. Wind S to SW 5-15 MPH.
TONIGHT: Mostly clear. Lows 62-68. Wind light S.
MONDAY: Partly cloudy. Slight risk of isolated showers. Lows in the 60s. Highs from the upper 70s to middle 80s, coolest South Coast.
TUESDAY: Partly cloudy. Isolated to scattered thunderstorms. Lows in the 60s. Highs from the upper 70s to middle 80s, coolest South Coast.
WEDNESDAY: Partly sunny. Isolated to scattered thunderstorms. Lows from the middle 60s to lower 70s. Highs from the upper 70s to middle 80s along the coast and the upper 80s to lower 90s interior areas.
THURSDAY: Variably cloudy. Scattered showers/thunderstorms. Lows from the middle 60s to lower 70s. Highs from the lower to middle 80s South Coast, middle 80s to lower 90s elsewhere.

DAYS 6-10 (JULY 21-25)
The large scale pattern is expected to feature a ridge of high pressure over the western US and a weak to moderate northwesterly flow over the northeastern US. This pattern is typically seasonably warm with brief alternating modified heat and modified cooler shots, timing of these not really doable beyond a few days. This pattern also produces opportunities for showers/thunderstorms especially with air mass changes. The greatest risks at this point appear to be July 21 and again late in the period.

DAYS 11-15 (JULY 26-30)
The late days of July should feature a somewhat similar pattern but trend may be for more heat as the hot ridge from the west flattens. Also continuing to see signs of new high pressure establishing near or off the East Coast which would also translate to a hotter pattern. Mainly isolated to scattered showers/thunderstorms are possible but this would be a largely rain-free pattern.

35 thoughts on “Sunday Forecast”

  2. Thank you and wow…looks like a perfect week

    TK….is there a time period for the northern lights or is that too hard to determine.

    1. It’s really hard to tell. We’re at the mercy of not only visibility due to sky conditions, but the solar wind and our atmosphere’s reaction to it.

    1. Thank you, Tom. And thank you for the amazing weather that was behind the clouds when we arrived. Your corner of the world is a slice of heaven indeed!

  6. Did any see the flyover of four F-15 jets at Fenway for the Vietnam vets ceremony?

    I was out in Dover fishing in the Charles River and they came right over my head.

    1. Many of my friends, neighbors, and my mom, all saw them here in Woburn. I was on the road at the time so I did not get to see it, but I saw some great air shows from the parking lot of the private company I worked for for years (it was just down the flat from the runway at Hanscom AFB). 😀

  7. Halfway through meteorological summer, here’s Logan’s high temp tally :

    July (1st half)

    60s : 1 day
    70s : 4 days
    80s : 9 days
    90s : 1 day

    June
    50s : 2 days
    60s : 3 days
    70s : 11 days
    80s : 10 days
    90s : 4 days

    All together (June and July) 45 days ….

    50s : 2
    60s : 4
    70s : 15
    80s : 19
    90s : 5

        1. Thanks Tom. Lots of 70s and 80s I notice. It will be interesting how many more 90s between now and September.

          And btw…only 161 days till Christmas! 😉

  9. Based on Tom’s stats above, did we have 4 days of 90+degrees in May? I believe we have a total of 9 so far.

  10. 77 at Logan with SE wind and dp 64. A bout 88 here.

    Boston Buoy water temp at 70 degrees. One thing good about a sea breeze.

  11. I just stumbled onto this website. Just in case anyone has any interest.

    National Data Buoy Center – Dial a Buoy

    http://www.ndbc.noaa.gov/dial.shtml

    You dial 888-701-8992 and enter the buoy ID, for example for Boston Buoy enter
    44013

    You get the same data as on the Buoy website.

  12. Its good to be back from vacation and the air mass feels quite comfortable. Three straight days air temperature reaching 100 degrees. For fans of heat and humidity on this blog you would have loved it.
    I saw this trivia question on the news down there and I guessed and got it right.
    The question: In what year was the heat index developed?
    A. 1958
    B. 1978
    C. 1998

      1. Frankly, I never heard of heat index until fairly recently but I have known of wind chill as long as I can remember going back to Don Kent. I will guess A but you are probably correct, Vicki. 🙂

  13. Thanks Philip and Vicki. It is great to be back from Virginia and I enjoyed the Cubs Orioles game at Camden Yard last night. There were lot of Cubs fans there.

    1. Very good! Generally agree!

      I’m slightly reserved about the end of the week.

Comments are closed.