Hottest August Day in 6 Years!

Snapshot Whew!  That was getting stressful about noon when PDX was only 82 degrees.  I had a weak moment when I doubted my forecasting, but now at least we all know the temp CAN rise 20 degrees from noon to 5pm in Portland.  A nice even number to keep in our memory banks.  And we did this with easterly wind only surfacing east of I-205.  It has been a bit weaker than expected, and only a few isolated hills outside of the Gorge will continue to see the breeze overnight.  If you've lost the wind this evening, you probably won't see it again until midday tomorrow.

There is no significant change to the atmospheric temperature or windflow over the next 36 hours.  Easterly flow from near the surface to 5000' continues until midday Saturday.  I don't see any good reason that the wind will move any farther into the metro area tomorrow, so I figure just a notch or two of warming due to a slightly warmer atmosphere.  So I bumped the 103 up to a 104.  I hope we don't get a surprise 106…that would be really weird since I don't think we've ever hit that before (105 and 107, but no 106).

Looking at our RPM model and the WRF-GFS it looks like we don't even get any seepage of marine air until AFTER peak heating Saturday.  So I subtracted 4 degrees from Friday's high due to the easterly flow ending.  Either way we may actually have 3 days at/above 100 degrees…that's very rare at PDX.

Quite a push Sunday…I've got 84, although 00z models show quite a bit more digging of the approaching upper trough offshore than they showed 12 hours ago.  That COULD delay the cooling a bit, or at least weaken the push so that we still get around 90 on Sunday. 

If we hit 103 or higher tomorrow, it'll be our warmest August day since the great heat wave of 1981.  And, as Steve Pierce pointed out (the data master), we haven't had 3 days at/above 100 degrees since that July heat wave in 1994…Mark Nelsen

210 Responses to Hottest August Day in 6 Years!

  1. yevgeniy/beaverton/hillsboro says:

    folks in beaverton might get hammered by a cell here

  2. yevgeniy/beaverton/hillsboro says:

    I am being risky but i think we might see sever weather in portland area, overnight, or tommorow

  3. Atmospheric Wrath -Far S.E. Portland- says:

    It won’t have a lot of time to do so… That’s the main point I was trying to make.

  4. Atmospheric Wrath -Far S.E. Portland- says:

    Okay well my assumption is it being over some land areas, perhaps some mountainous areas that it will disrupt the circulation a bit… So it will not strengthen rapidly once it is over the warm Florida Keys…

  5. kirk ( N of Washougal ) says:

    Ahhhhhh 71.8 !!

  6. HIO Phil (Punxsutawney) says:

    Fay is forecast to travel right up past my uncle in the Tampa Area.

  7. HIO Phil (Punxsutawney) says:

    Triforce, If you are reading this – “Sometimes Discretion is the Better Part of Valor”. I mean that sincerely and with your best interests in mind.

  8. Mike (Sweet Home) says:

    Only 97.4° today, about 1° cooler than yesterday.
    Currently 77°
    DP 61.2°
    RH 57%
    Winds are light from SSE

  9. Atmospheric Wrath -Far S.E. Portland- says:

    The increased in low level humidity is slowing the rate of temp decrease….

  10. Gregg-Troutdale says:

    82.2 here.

  11. Atmospheric Wrath -Far S.E. Portland- says:

    Perhaps it won’t be able to get too terribly strong then? Sounds like it may not.

  12. TV Weather Producer says:

    Just to point out, we are going to have a land falling Hurricane in the gulf, this coming week. Tropical Storm Fay is currently hitting Haiti and is forecasted to come right over the keys and come up along the west coast of Florida early in the week. Let the party’s begin !

  13. Atmospheric Wrath -Far S.E. Portland- says:

    We do have a room A/C in the wall for the main part of the house, but this end of the house it is not pleasant.
    I just stepped outside and it does not feel like Oregon.

  14. HIO Phil (Punxsutawney) says:

    Yours beats mine Rob!

  15. Atmospheric Wrath -Far S.E. Portland- says:

    Oh I forgot to mention I’m still 81.3°

  16. HIO Phil (Punxsutawney) says:

    Thanks for the kind comment Luvry, they’re more annoying than anything else.
    Well it just dropped under 80 here. Everything outside is radiating heat. Slight NW wind at the moment. Depoint a sprinkler enhanced 66.
    The record high-low for Hillsboro is 66 on the 16th. I think we have a good chance of tying or beating it tonight.
    Great Pic’s Salem-Phil!

  17. Atmospheric Wrath -Far S.E. Portland- says:

    My DP is up to 69 !

  18. Atmospheric Wrath -Far S.E. Portland- says:

    As of 10 PM
    [Surface gradients]
    AST-PDX: +4.0 -0.5
    OTH-SLE: +5.0 -0.4
    OTH-EUG: +3.8 -0.7
    PDX-DLS: +0.3 +0.3
    TTD-DLS: -0.1 -0.4
    OTH-GEG: +1.2 +0.2

  19. TV Weather Producer says:

    M, Its tough to compete with Stephanie, but in terms of sports, you win….weather she does…..

  20. Atmospheric Wrath -Far S.E. Portland- says:

    It appears the flow may be turning offshore at least in the I-5 corridor/PDX metro area…
    If I am correct about this it could have a significant impact on tomorrow being just 99-101, or 105-108. The air mass aloft supports the possibility. We need NO clouds, no marine influence meaning little to no NW-N winds, and very light E winds to spread out of the Gorge or down off the Foothills/Cascades….
    Never know.

  21. Boring Larry in Cherryville el.918 says:

    …from where i’m at, it looked like the entire skyline was aflame……

  22. KE7DKG - Forest Grove says:

    Still 87.4 here in FG now, the wind has backed to the NE from the NW. Temp is holding steady now.

  23. Atmospheric Wrath -Far S.E. Portland- says:

    I can’t see the sunset, but the full? moon mixed with high clouds is stunning.

  24. Atmospheric Wrath -Far S.E. Portland- says:

    As of 9 PM
    [Surface gradients]
    AST-PDX: +4.5 +/- 0
    OTH-SLE: +5.4 -0.9
    OTH-EUG: +4.5 -0.7
    PDX-DLS: -0.0 -0.7
    TTD-DLS: -0.5 -0.1
    OTH-GEG: +1.0 -0.8
    Looks like the thermal trough is expanding moving back towards the Willamette Valley.

  25. KE7DKG - Forest Grove says:

    Amazing sunset out there right now!!!!

  26. Atmospheric Wrath -Far S.E. Portland- says:

    8 PM surface gradient reports are not updating.
    I’m having the shakes and withdrawal symptoms.
    Sarcasm obviously.

  27. Atmospheric Wrath -Far S.E. Portland- says:

    Whoops! Disregard that…. Wrong button :/

  28. Atmospheric Wrath -Far S.E. Portland- says:

    As of 8 PM
    [Surface gradients]
    AST-PDX: +4.5 +0.1
    OTH-EUG: +5.2 +0.4
    PDX-DLS: +0.7 +0.2
    TTD-DLS: -0.4 +0.1
    OTH-GEG: +1.8 +0.3

  29. Salemphil says:

    Now Luvry, what do you take me for lol. I wasn’t peeking out the curtains…The front door was open a crack LOL!!

  30. Mark Nelsen says:

    Could you send me an email at please?

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