Happy Thanksgiving!

Is it cold out there or what?  I’ve got 17 degrees at my home…with maybe 2″ of snow on the ground.  I didn’t look at much weather today, since I spent the entire day getting some scheduled computer training.  My eyes are toast and my brain is fried from all the exciting weather.  I won’t be in until Friday afternoon again, so enjoy Thanksgiving.

I don’t see anything too interesting the next 48 hours.  Another cold day tomorrow, with maybe just a few degrees warming from today’s 30 degree high.  Lots of clouds, but it’s going to be tough to get anything other than a flurry (at most).  Solid cloud cover tomorrow night should keep us around 30 degrees, then a  switch to a southerly wind Thanksgiving Day pushes us up around 40 or so.  The cold air should make a quick exit then, but if we get moisture on schedule Thanksgiving Evening, the Gorge will probably be cold enough for a snow/freezing rain mix.

Chief Meteorologist Mark Nelsen

618 Responses to Happy Thanksgiving!

  1. Karl Bonner says:

    Perhaps I should rephrase my question about non-arctic snow events for PDX and the Willamette Valley: I’m specifically referring to valley-floor snow that happens with no kind of interior airmass or inversion whatsoever, be it arctic or a Columbia Basin deep cool pool caused by a prolonged fogversional high. The air MUST come from off the ocean, NOT the continent, in order to count!

  2. Kyle From Silverton says:

    Any chance of ZR for Salem and other valley/foothill locations?

  3. bgb41 says:

    Some serious record lows set last 2 days in the Northern Sierra Nevada region.


    • Kyle From Silverton says:

      I hope Quincy California got record lows:

      One time while we were living there Dad said it got to 0F once but then again our house was 1 house to a mountain on the south side of the house so was always cloder then the rest of the town.


  4. W7ENK says:

    So strange, the new post is gone from the front page, but it still exists by going into my browser’s history and clicking the link… Whiskey Tango Foxtrot, Sergeant?!?


  5. Garron near washington square says:

    ++++NEW POSR+++++

  6. Rob "Wrath" S.E. Portland says:

    It is only 35.6 here with E-NE winds 5-15mph.

  7. bgb41 says:

    Huge temperature differential in East Clark County right now. 44 at Crawford/Heisson and 25 with nasty ice at Cape Horn along highway 14.

  8. pappoose in scappoose says:

    Be watching for graupel/albino donkeys soon.

  9. MamaReen says:

    Holy gale,Batman. We are out Long Beach way for the weekend and whatever blew in/through last night was a howler. The deck chairs were flying back and forth across the deck. It certainly has been quite the bust couple of weeks for weather. Maybe Rob from 3 miles N of Long Beach has some actual readings!

  10. Cherie in Vernonia says:


    • In The Hood says:

      Cherie – You are just like everybody else who dosent live in The Gorge, but think you know best. Chains are required IF: you are over 10,000 GVW, and /or towing. Your SUV is just fine with ODOT and the State Police if you have traction tires only. Spread the hype some more, just get your facts right in the future please!

    • pappoose in scappoose says:

      Mind your manners Cherie. Hahaah!

    • jory (Sandy) says:

      Say ‘In The Hood’, relax. Wouldn’t you rather have people err on the side of safety?

    • W7ENK says:

      Wow, lighten up Hood…

      Here’s verbatim what KATU posted on Facebook:

      TRAVEL ALERT: Chains are required on I-84 between Troutdale and Cascade Locks due to freezing rain.

      Nothing about GVW, towing, SUVs, etc…
      Don’t be so quick to jump, please. 😉

  11. ChiefWright says:

    Now 45 deg with moderate SW wind, and maybe 0.04″ since sunrise here in Marquam (grayrise, really). No more hauling water for the critters; time to reconnect hoses & watering tanks.

  12. EA_TTD says:

    No ice up on the hill here in Troutdale but it’s very close. 2 miles east of my location is a sheet of ice, especially the Columbia River Highway beginning at the Stark St. bridge.

  13. k5mitch says:

    35F and light rain
    wind from the E @ 5 mph

  14. W7ENK says:

    36F and light rain, no ice whatsoever. As far as I’m concerned, this event is now officially over.

    On to the next model ride! 😀

  15. Rob "Wrath" S.E. Portland says:

    Pressure Gradients
    As of 3 AM
    PDX-DLS: -6.4mb | 0.7mb Decrease
    TTD-DLS: -6.4mb | 0.7mb Increase

    OLM-PDX: -4.5mb | 0.2mb Increase
    PDX-EUG: -1.5mb | 0.4mb Decrease

    My Current Conditions
    Temp: 35.2(Falling)
    Dewpoint: 27
    Wind: E@9.8

    Troutdale is now 32F / DP 26 meanwhile Salem is 44 with S winds 22 G29. The typical battle of south winds vs east winds has begun.

  16. Danny in Troutdale says:

    Im getting a light drizzle at my place by blue lake park. Thats close to the Troutdale Airport. I might be at 32 or a little below. The road has a little sparkle to it. 😦

    • Rob "Wrath" S.E. Portland says:

      You’re probably 32-34 there…. Once the heavier precip begins to fall your temp may fall below freezing due to the lower dewpoints.

  17. Rob "Wrath" S.E. Portland says:

    There is now some scattered light precip moving into the area. West of Troutdale should be just a cold rain, in Troutdale and points east(Corbett, western Gorge) I would say cold rain in TTD for now as the precip is not heavy enough to benefit from available wet bulb, but Corbett, Rooster Rock east will become icy quick.

    • Rob "Wrath" S.E. Portland says:

      Dangerously close to ZR for Troutdale… At this point I’d almost plan on some just to be safe and prepared.

  18. Rob "Wrath" S.E. Portland says:

    Up checking on things…. East wind is noticeably increasing out here…

    Pressure Gradients
    As of 2 AM
    PDX-DLS: -7.1mb | 1.4mb Increase
    TTD-DLS: -7.1mb | 1.1mb Increase

    OLM-PDX: -4.3mb | 0.4mb Decrease
    PDX-EUG: -1.9mb | 0.6mb Increase

    My Current Conditions
    Temp: 54.3
    Dewpoint: 28
    Wind: E@14

    I’m going to be close to seeing ZR I think. Troutdale may not escape it however at 33F DP 26. East wind increased just enough overnight to pull a shallow layer of cold air into the western Columbia River Gorge. All other metro observations are above freezing.

  19. Bob Gilmore says:

    Mark, we love your weather reporting! Here is a poem I wrote this evening. Maybe you can use it.

    I think “La Niña” needs a name
    So we can lay on her the blame
    For winter long and wet and wild
    She is a nasty, ornery child
    She brings us rain and sleet and snow
    And wind that loves to beat and blow
    Instead of acting sweet and nice
    She loves to cover things with ice
    I’d rather see her little brother
    It seems he’s staying with their mother
    The name I’ll give the Niña brat
    Is Tempest Storm. That’s where it’s at.

  20. Karl Bonner says:

    I wonder if this will be one of those years when we get a significant lowland snow event without any arctic airmass to assist? There’s two ways I could see it happening: first is that we get radiational cooling at night followed by a sudden surge of clouds and moisture early in the morning. The other would be a really cold storm from the Gulf of Alaska pulling a bunch of frigid air out over the water without that air swinging too far out. (in other words, the actual storm clouds come at us more from the WNW instead of WSW.)

    In January and early February, it should be plenty cold over the north Pacific to make this possible, especially in La Nina conditions. The key factors are how cold Alaska happens to be, how forcefully the arctic air spills out over the water, and how direct its route to the PNW ends up becoming. Too mild in Alaska, too weak a push, or too circuitous a route, and any hopes of a marine-air snowstorm melt away.

    • pappoose in scappoose says:

      The Columbia Basin can form a cold enough air mass to give us snow without an arctic air assist.

    • Sandman, Aloha 300' says:

      I have never heard anyone say this but I myself knew it was possible.

      We just need an iversion H to set up.

  21. Kyle From Silverton says:

    43F now.

  22. Karl Bonner says:

    Doggone it! I missed the La Nina forecast at 10:30 tonight. Except the last couple minutes. What were the key headlines and topics discussed, beyond the three “W”‘s of wild, wet, windy?

  23. 00z GFS and ECMWF have erased hopes for another arctic event with snow in the next 2 weeks. We shall see if this changes in future runs.

    • Karl Bonner says:

      Erased hopes for another event? What time frame suggested the possibility of another event before that possibility was erased?

  24. Sisters Island getting nearly 60 mph SE winds


    This is in the Salish Sea which is in the strait between Vancouver Island and mainland Canada.

    32.5 degrees here.

  25. Kyle From Silverton says:


  26. Kyle From Silverton says:

    What do you call it when it cools off during the afternoon and warms up through the night?

  27. W7ENK says:

    [Milwaukie] 11/25/2010
    43.7°F High
    30.1°F Low
    WNW 5.8 mph at 12:58p

    I’m going to bed early tonight.

    Good night, bloggers.

  28. Kyle From Silverton says:

    39.9F here after 36.1F a few hours ago.

  29. Copper says:

    We seemed to have got to 44 degrees today in Clackamas, OR but now we are 33.5 degrees. Are we at risk for freezing rain tonight? With 44 degrees it appeared as if the cold air has left but it is close to freezing right now!

  30. Danny in Troutdale says:

    Is it really 32 degrees in Hillsboro like the website says? What does that mean for them as far as winter precip?

    • W7ENK says:

      Yes, it probably is. The warm air moved in throughout the day, so I guess now it’s here, but since the sun has gone down, the temperature (of this warmer airmass) is now below freezing at the surface in many areas. I have 32 and change at the moment in Milwaukie, and it’s been dropping steadily since about 3pm. My weather station shows *snowflakes*! 🙂

    • Rob "Wrath" S.E. Portland says:

      No chance of snow west of Hood River/Cascade Locks…. It would only be ZR in our area.

    • W7ENK says:

      Hey Rob,

      First off, I hope you had a great Thanksgiving!

      Second, any idea what the temps up above are doing? I see the KPTV Tower temps are as follows…

      T1 (1818′) 36.5F
      T2 (1473′) 37.9F
      T3 (1043′) 34.0F

      Little bit of an inversion, it seems?
      Warmer air aloft, or something?
      What about up higher?

      Freezing at the surface, ZR it is! I hate that stuff, but at least I don;t have to go anywhere tomorrow.

    • Rob "Wrath" S.E. Portland says:

      Thanksgiving is just another day…. I do hope you and everyone else here had a good one.

      As far as your question about the tower temps, upper levels warming…. Yep you can have several layers of warm air above and through the cold dome. Eventually the warm wins out due to those darn southerlies.

  31. Rob "Wrath" S.E. Portland says:

    I just looked at tonight’s UW 00Z MM5-NAM 12km Sounding. It shows NO frozen precip for PDX or TTD. Regardless with the PDX/TTD-DLS around -6.5mb it is worth watching as east winds draw progressively colder/drier air west. The question is to what extent.

  32. Cherie in Vernonia says:

    Sure hope that station @ Timber Jct is wrong cuz it says 30F & if it starts raining …yikes!

  33. Cherie in Vernonia says:

    I’m confused. According to the infrared & water vapor maps we should be getting soaked right now. what am I reading wrong???

  34. Rob "Wrath" S.E. Portland says:

    Pressure Gradients
    As of 7 PM
    PDX-DLS: -6.1mb | 0.6mb Increase
    TTD-DLS: -6.4mb | 0.6mb Increase

    OLM-PDX: -1.7mb | 0.7mb Increase
    PDX-EUG: -0.2mb | 0.3mb Decrease

  35. Mountain Man says:

    My temp bumped up to 32.0 from 29.5. ESE wind now 3mph. There was more wind a few hours ago and now it’s calming down and warming. Could be the mountain side above me to the east reducing my wind as it often does depending on the exact wind direction. What I really wonder is if I am warming because the colder air has is already eroding from above to my elevation of 1,150 ft. here in the gorge. Perhaps this cool air is getting really thin or perhaps there is just pockets of air blowing around that are warmer and cooler which happens out here sometimes.

  36. eugene in vancouver says:

    East wind should be picking up soon. Could we get cold enough for a surprise overnight?

  37. Rob "Wrath" S.E. Portland says:

    Pressure Gradients
    As of 6 PM
    PDX-DLS: -5.5mb | 0.7mb Increase
    TTD-DLS: -5.8mb | 0.3mb Increase

    OLM-PDX: -1.0mb | 0.2mb Decrease
    PDX-EUG: -0.5mb | 0.7mb Increase *Turned light southerly

  38. High 45.2F
    Low 30.6F
    Dry day

    Currently 36.9F

  39. 11-25-2010 BG Lake

    High: 39.9 Low: 29.3 Precip:0.01″

    535pm temp 33.6

  40. PDX Weather Nut says:

    Looks like a very cold rain tomorrow! Yuck!

  41. W7ENK says:

    Okay, I just have to express how really ridiculous this is…

    KGW opened their 5pm show with a reporter standing “at the mouth of the Columbia River Gorge” in Troutdale; It’s blatantly obvious that there’s NO wind, NO rain, traffic looks fairly light, and yet he’s wearing a full coat, with a hat, the hood up, AND HE’S YELLING INTO THE MICROPHONE IN FULL STORM-VOICE VOLUME AS IF ALL HELL IS BREAKING LOOSE BEHIND HIM!!! 😆

    TV News is so silly!

  42. Rob "Wrath" S.E. Portland says:

    TTD-DLS now -5.5mb ….

    • Mountain Man says:

      Cascade Locks has cooled to freezing and I am down to 29 here in the gorge at 1,150 ft just a little west of Stevenson. Best of all a fairly steady though light ENE wind (7mph at the moment). I think east metro may get down to freezing tonight and gorge could be a mess in the morning. Time will tell. still 6 in. on the ground at my house.

    • Rob "Wrath" S.E. Portland says:

      Yeah I’m a tad bit nervous for areas near Gresham/Troutdale if the east wind picks up. Drier air/lower dewpoints and colder air is beginning to funnel westward as we speak…

    • SEWoodstockBob says:

      Rob this is Bob what part of SE are you? Im in the Woodstock area and was just outside and the wind appears to be out of the east?

  43. Cgavic sandy Oregon 1,100 ft says:

    Warmed up today. High of 35. Yet, the forecast for the area…1,000 and higher, calls for rain and lows 32 highs 37.

    I’ll have to monitor this closely.

    At least we had snow on the ground to call it a white thanksgiving.

  44. Ben Randall says:

    I like this chance even for the coast ~ http://weather.unisys.com/gfsx/9d/gfsx_850_9d.html

    North Flow …..No onshore flow cold air

  45. Rob "Wrath" S.E. Portland says:

    So east wind is increasing out here. TTD-DLS: up to -4.5mb …. My dewpoint has dropped to 27F…. Interesting.

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