Hurricanes and Sunshine

Tropical_cyclones_1945_2006 I found this nifty little graphic this evening from the Joint Typhoon Warning Center in Guam.  I had a viewer ask the perennial question about why we don't have Hurricanes on the West Coast.  Of course that lead to me poking around the Internet.  You need to click on the image here to get a much larger view.  Notice that the cool ocean water off the West Coast of North America is quite obviously a "storm killer".

So the answer to the viewer is that you need 80 degree water to develop/intensify any sort of tropical cyclone.  It's too cold up here on the West Coast.

No weather to really talk about this evening.  I noticed the 88 degree high at PDX was way up there on the "magic chart".  The 850mb temp of +15 over SLE this afternoon could have produced a high between 76 and 86 on an average day in early September.  We made it to that 88 degrees which probably exemplifies the perfect setup:  solid sun, dry airmass, easterly wind that wasn't too strong for maximum mixing.

Onshore flow Tuesday-Wednesday goes back to offshore Thursday-Friday.  Onshore Saturday then offshore again next Sunday.  Our warm/dry/sunny spell continues until further notice!  Mark Nelsen

57 Responses to Hurricanes and Sunshine

  1. Robert in Vancouver says:

    With respect to the hurricane image Mark posted, does anyone know why Hawaii doesn’t get more hurricanes? Ocean temps average upper 70’s – low 80’s year round, yet there seem to be very few that hit the islands? Is there too much wind shear from the Trade Winds? Other factors?

  2. Robert in Vancouver says:

    With respect to the hurricane image Mark posted, does anyone know why Hawaii doesn’t get more hurricanes? Ocean temps average upper 70’s – low 80’s year round, yet there seem to be very few that hit the islands? Is there too much wind shear from the Trade Winds? Other factors?

  3. Robert in Vancouver says:

    With respect to the hurricane image Mark posted, does anyone know why Hawaii doesn’t get more hurricanes? Ocean temps average upper 70’s – low 80’s year round, yet there seem to be very few that hit the islands? Is there too much wind shear from the Trade Winds? Other factors?

  4. If I’m not mistaken, I remember Mark making a remark about active hurricane seasons and that we generally have an active winter following. The last half decent winter we got was 03/04, and 03 was a very active hurricane season: http://en.wikipedia.org/wiki/2003_Atlantic_hurricane_season
    Some of you may remember me preaching about how I like 03 as an analog, this month hasn’t been very similar at all, in 03 we started wet and cool, and ended very warm and dry. If we keep things going the way they are, we would have started, ended and endured a warm and dry September. No complaints from me, it feels good and I am sure winter will pack a wet enough of a punch to make us beg for Summer in just a few short months.

  5. If I’m not mistaken, I remember Mark making a remark about active hurricane seasons and that we generally have an active winter following. The last half decent winter we got was 03/04, and 03 was a very active hurricane season: http://en.wikipedia.org/wiki/2003_Atlantic_hurricane_season
    Some of you may remember me preaching about how I like 03 as an analog, this month hasn’t been very similar at all, in 03 we started wet and cool, and ended very warm and dry. If we keep things going the way they are, we would have started, ended and endured a warm and dry September. No complaints from me, it feels good and I am sure winter will pack a wet enough of a punch to make us beg for Summer in just a few short months.

  6. If I’m not mistaken, I remember Mark making a remark about active hurricane seasons and that we generally have an active winter following. The last half decent winter we got was 03/04, and 03 was a very active hurricane season: http://en.wikipedia.org/wiki/2003_Atlantic_hurricane_season
    Some of you may remember me preaching about how I like 03 as an analog, this month hasn’t been very similar at all, in 03 we started wet and cool, and ended very warm and dry. If we keep things going the way they are, we would have started, ended and endured a warm and dry September. No complaints from me, it feels good and I am sure winter will pack a wet enough of a punch to make us beg for Summer in just a few short months.

  7. Tornado Aly (vancouver) says:

    Triforce, I just googled and found this page for ya.
    http://www.noaanews.noaa.gov/stories2005/s2518.htm
    Looks like it was 2005. I think 2005-2006 was a blah winter though.

  8. Tornado Aly (vancouver) says:

    Triforce, I just googled and found this page for ya.
    http://www.noaanews.noaa.gov/stories2005/s2518.htm
    Looks like it was 2005. I think 2005-2006 was a blah winter though.

  9. Tornado Aly (vancouver) says:

    Triforce, I just googled and found this page for ya.
    http://www.noaanews.noaa.gov/stories2005/s2518.htm
    Looks like it was 2005. I think 2005-2006 was a blah winter though.

  10. HIO Phil (Punxsutawney) says:

    Good question Glorious! and I’m not really sure of the answer. I think part of it has to do with where the temp sensor is for Portland. It tends to get some cooling from the Columbia river near by. Also, I think that Hillsboro tends to get some downslope windflow from the West Hills, a lee eddy effect perhaps? This is something that I’ve just started paying attention to in the last year.
    When it does clear up in the winter, we often hit freezing faster than areas to our east because of the cool air pooling over the area. With the right type of storm, we can get snow because of this while the east side gets nothing. Doesn’t happen very often. November 1996 or ’97 this happened.

  11. HIO Phil (Punxsutawney) says:

    Good question Glorious! and I’m not really sure of the answer. I think part of it has to do with where the temp sensor is for Portland. It tends to get some cooling from the Columbia river near by. Also, I think that Hillsboro tends to get some downslope windflow from the West Hills, a lee eddy effect perhaps? This is something that I’ve just started paying attention to in the last year.
    When it does clear up in the winter, we often hit freezing faster than areas to our east because of the cool air pooling over the area. With the right type of storm, we can get snow because of this while the east side gets nothing. Doesn’t happen very often. November 1996 or ’97 this happened.

  12. TriforceofInvisibility says:

    Triforce alos doesn’t remember the year of the hurricanes when that happened.

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