Midweek relief; unsettled late week; active tropics

August 17th, 2009 at 1:52 pm by Don Paul under Weather Watch 4

Muggy conditions will continue into Tuesday, although temperatures will not be as warm on Tuesday.  A cold front crossing the region will bring Sct Shwrs & Tstorms Tuesday, mainly PM. While precipitable water will be quite high Tuesday, the dynamics to make strong or severe storms will be marginal.  A bubble of relief arrives for Wednesday, with somewhat lower humidity, but a warm front will be approaching by Thursday AM.  A vigorous upper trough will send unsettled and muggier conditions back in here Thur into Friday, ahead of significantly cooler conditions for the wknd.  While a few stray showers will be possible Saturday, most of the wknd should be dry.  That vigorous trough should help turn Hurricane Bill–which is likely to become  a Major hurricane-northward and away from the US east coast by week’s end. Should that trough unexpectedly become stationary, that would change things.  At this point, that scenario is unlikely.

212 Responses to “Midweek relief; unsettled late week; active tropics”

  1. Thinksnow09 says:

    Thank you Don. I didn’t get a chance to see the 6pm so any updates were not watched by me.

  2. Don Paul says:

    You didn’t miss much, thinksnow. We got preempted by golf!

  3. George J. Cotroneo says:

    Question? What is the difference between a rip tide and a rip current.

  4. storm watcher says:

    Where’s the abundant sunshine that was forecast for today?

  5. sabresfan says:

    cool pic featuring Kelvin-Helmholtz Instabilities…like waves in the ocean, these are clouds…check it out!
    http://www.wunderground.com/wximage/viewsingleimage.html?mode=singleimage&handle=btangy&number=1&submitrating=submit&rating=10#slideanchor

  6. Don Paul says:

    storm watcher; I was VERY specific when I said clouds would be mixing in in the AM, with more sun in the PM. If it’s still cloudy this afternoon, then you can whine, okay?

  7. Don Paul says:

    Rip tides and rip currents are one and the same. The more correct term is rip current.

  8. LG says:

    Hi Don

    Is this a good week to plant grass seed?
    I have planted twice so far and only to be wiped out by torrential rains. Need a week to get roots going before any heavy rain.

    Thanks

  9. Don Paul says:

    Getting a whole week this summer with no heavy rain has been a challenge. Wednesday’s convection, last I looked, (just starting workday today)seemed unimpressive. Next weekend, however, I can’t yet vouch for. All in all, it does seem like a more promising week than most this summer, LG.

  10. sabresfan says:

    http://www.wunderground.com/hurricane/2009/bill_kelvin-helm.jpg
    Here’s a picture of the eye of Bill, taken by Hurricane Hunters as they flew into Bill on August 19. Towards the center of the photo, you can see a Kelvin-Helmholtz Instability.

  11. LG says:

    Thanks Don
    I will go for it again and plant tonight!

  12. Don Paul says:

    NEW THREAD IS UP.

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