Lab Experiment

7:39AM

We became a meso-scale weather lab experiment on Monday as cool outflow air from thunderstorms exiting Maine into the Atlantic pushed southward as a back-door frontal boundary and moved into southern NH and much of eastern MA, popping some showers and thunderstorms in the process. This boundary cooled coastal areas off from around 80 to near 70, 60s in some cases, while areas well southwest of Boston remained very warm. This boundary which has now cooled off most of the region and even notched-down the humidity (though it is still technically humid) will hang around the region and fall apart today, being only a minor focus for development of showers. We’ll have to wait for another boundary, a warm front, to push through the region early Wednesday, with showers and thunderstorms, introducing very muggy air back to the region from mid into late week. Additional showers/storms are expected Thursday-Friday as a cold front moves into the region from the west and slows down. Its too early to tell how soon this will get out of here, but there is optimism for at least part of the weekend being better.

Updated forecast for southeastern New England…

TODAY: Mostly cloudy to partly sunny. Isolated showers. Highs 70 coast to 80 far inland. Wind light E becoming variable.

TONIGHT: Mostly cloudy. Patchy fog. Showers mainly south and west of Boston late. Lows in the 60s. Wind light variable to SE.

WEDNESDAY: Variably cloudy. Episodes of showers and thunderstorms. Highs upper 70s to middle 80s. Wind S to SW 10-20 MPH.

THURSDAY: Showers and thunderstorms likely. Low 66. High 85.

FRIDAY: Showers and thunderstorms possible. Low 68. High 82.

SATURDAY & SUNDAY: Isolated showers and thunderstorms. Lows 60-68. Highs 78-88.

MONDAY: Sunny. Low 66. High 88.

42 thoughts on “Lab Experiment”

  1. Thank you TK.

    Looks like the back door cold front has made it just about to NYC.
    Pretty impressive!

    T-Storms today? I’m not feeling it. 😀

  2. Thanks, TK. Lows in the 60s are better than in the 70s. No AC was needed last night and it feels good to have the windows open.

  3. re: Chantal

    Something HAS changed since yesterday. Now when it gets in the vicinity
    of the Bahamas, it is progged to have Max winds of 60 mph, while yesterday
    it was destined to be just a depression. This needs to be watched!

    120H 14/0600Z 28.5N 77.5W 50 KT 60 MPH

    0Z CMC has it hitting around SC

    http://moe.met.fsu.edu/cgi-bin/cmctc2.cgi?time=2013070900&field=Sea+Level+Pressure&hour=132hr

    The HWRF has it as a Hurricane in the Bahamas

    http://moe.met.fsu.edu/cgi-bin/hwrftc2.cgi?time=2013070906-chantal03l&field=Sea+Level+Pressure&hour=126hr

    And the GFDL has it in the Bahamas as a low end Category 2 Hurricane.

    The Euro and the GFS don’t have it at all.

    Chantal NEEDS to be watched carefully!!!!!!!

  4. Re: Thunderstorms today

    From the NWS at Taunton:

    EASTERN MA SHOULD BE SPARED MOST OF THE ACTIVITY AND THE ENVIRONMENT WILL BE A LOT MORE STABLE WITH ONSHORE FLOW.

    That about sums it up. 😀

  5. Thanks TK

    I think the weekend turns out pretty nice but we shall see.

    Chantal will be get decimated once it crosses DR, but we shall see what’s left once it crosses.

  6. I think wherever Chantal does make some kind of landfall in the SE US, we will surely see some effects, probably in the form of some tropical rains. Good thing is, it will be moving quickly.

  7. Matt Noyes believes that it should get steered away from most of the east coast, but again it’s a very close call.

  8. Chantal does not look disorganized right now. It forecasted to go over the highest mountains of Hispanola so with any luck it will tear the system completely apart.

  9. Chantal looks a little disorganized right now. It forecasted to go over the highest mountains of Hispanola so with any luck it will tear the system completely apart.

  10. Robert Kraft says if he did we’ve been duped, 2 weeks till mini camp, I’m gonna try and get Wilforks signature 🙂

  11. Re: Chantal

    Irresponsible to say it will stay CLEAR of the US coast this far out.

    It may, but some models are already forecasting a HIT to the SE Coast of
    the US.

    Plain and simply TOO early to tell.

  12. Is Instant Weather Maps no longer in operation?

    Either that website is Down OR they have discontinued service.

    Can anyone reach that website?

      1. Thank you Vicki. Yes, that is the one.
        My bookmark must have been corrupted.

        I’ve got it now. Thanks again.

  13. It doesn’t matter where chantel will go, we will just get some rain from it, which is good 🙂

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      I was always Much more of a Stones fan than a Beatles fan. I saw the Stones
      at the old Garden in 1965. The boys put on one heck of a show! 😀

  14. Looking at the latest surface map from Unysis:

    http://weather.unisys.com/satellite/sat_sfc_map.gif

    Coupled with my observation having just been out for an hour where I see
    the overcast thinning, the dew point and temperature RISING and the 1PM
    Norwood observation of CALM makes me think that this front is pushing
    Northward. I felt like it was literally on top of me outside a few minutes ago.

    We shall see. 😀

  15. 12z Euro takes Chantal into the Gulf and we never see a drop from it up here even in remnant form.

    1. CMC does as well, albeit in a round about fashion by coming on shore
      SC/NC border and looping Westward, SouthWestward into the Gulf. 😀 😀 😀

  16. 12z GFS retrogrades an upper level low pressure system from Cape Cod on Saturday July 13 alllllllll the way to eastern Oklahoma on Saturday July 20. YEEHAWW!

    1. What does that mean please?? Does Yeehaww mean good. We are at beach 7/20 to 8/3 so I’m keeping fingers crossed.

      1. I just threw that in for some Oklahoma flavor. I was starting to build a point that the GFS and Euro don’t agree today and that the GFS shows massive retrogression.

        If you look at July 20, for example, the Euro has a strong cold front approaching in a warm to hot air mass, while the GFS has us entrenched in a summertime air mass of heat and humidity.

  17. I think we could have some severe weather around these parts late tomorrow evening and Thu afternoon

    1. May reach hurricane status just prior to hitting Hispaniola.

      May also regain hurricane status just prior to hitting South Carolina.
      😀

      We shall see.

    1. Supposley he told somebody and that somebody told another somebody and that somebody told police, I heard it on espn so it’s all a mess, not sure how that holds up in court, we shall see 🙂

  18. Updated blog.

    Disagree with most TV mets at this time. Carrying unsettled forecast into Saturday, but tremendous rains not likely. Friday may be quite cool with high temps early morning. Rapid rise into hot weather early next week.

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