Wednesday AM Update

Whew…for once things went about as planned overnight, with some of the lowest elevations seeing very light amounts under the heavier showers, and lots of snow in the eastern suburbs up in the hills.  We forecast a low of 34 at PDX, and I was unsure if we’d make it there around midnight, but somehow it did. 

I woke up to 4″+ snow on the ground and it was blowing off the roof during a gust.  Briefly freaked out, thinking it was a forecasting disaster, but then quickly realized it was only up at this elevation.  I think the ZERO to TRACE in the lowest elevations covered it well.  Should have gone a bit higher in the hills eastside though.

Showers taper off today with plenty of sunbreaks inbetween, still a dusting possible overnight tonight anywhere, but the big story is on to chilly weather and really cold east wind New Year’s Eve and Day.  Brrr!

Chief Meteorologist Mark Nelsen

463 Responses to Wednesday AM Update

  1. wendy-silverlake,WA says:

    21.7 here and still dropping. Perfectly clear skies. Not much longer and we can start ice skating on the pool. Didn’t make it above freezing today, so a nice ice build up in there already.

  2. geo says:

    gfs(getting fooled sometimes).

  3. pgiorgio says:

    long range gfs stands for grandiose frozen surprise to satisfy all the dreamcasters with the possibilities.

    • Jake-(Gresham) says:

      I think it’s exciting that the gfs is showing awesome potential but I don’t know how many times (lost count) that I’ve seen it all moderate out to a few degrees above freezing and a cold…. cold rain.

      I hope that doesn’t happen this time around.

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

    Back down to 26.2

  5. Up a degree in the past hour…now 27.4.

  6. Laura (West Gresham) says:

    lots of frost here, almost looks like it snowed

  7. geo says:

    what the hell happened to that!

  8. Andrew Johnson says:

    I hope the flow goes offshore soon and we can get rid of these darn low clouds and get some nice radiational cooling! It seems the dry air won’t start working2 down into my area until around 5-7am. If it does clear before dawn the temp should drop nicely, if not 28-30 is probably about where I’ll end up. Friday and Saturday nights should be when I get my best radiational cooling.

  9. bgb41 says:

    00Z GFS at Troutdale.. Not too wet..A nice 51 degrees on Jan 7th.

  10. Joshua in Lake Oswego says:

    Is anyone else’s temperature going up? Mine went from 27.9 to 28.6 in about 20 minutes.

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

    Yeah it’s just 1 run. If we lose total ensemble support, if the EURO/GEM disagree with the GFS, and if future GFS runs over the next 4-5 days veer away from favorable blocking then I’d worry.

  12. PortBlazerFan says:

    Models haven’t locked in on a solution yet for days 11-16. We’ll have a better idea in 4-5 days.

  13. 21 degrees in Dole Washington right now.

  14. Tyler in Battle Ground says:

    Todays’ time lapse, nothing too exciting.

    Frost melts, cloudy, then sunny.

    Best parts: 10-20, different flows at different levels.

    1-1:15 as the clouds burn off

  15. pappoose in scappoose says:

    The wind direction has changed and is ramping up at Prindle

  16. Tyler in Battle Ground says:


  17. Andrew Johnson says:

    Well the 00z is a let down. Just one run though

  18. Ken says:

    Any thoughts on this low that is approaching the west coast that is supposed to stall then strengthen and then drop south?

  19. Boydo3 500' North Albany says:

    Skied at Hoodoo today. High was 17 deg. Light winds. Great snow!

  20. Tyler in Battle Ground says:

    24.5, W @ 2

  21. Runrain says:

    I have 23.5 deg in Happy Valley elev. 500′ and dropping steadily. No wind from what I can tell.

  22. Tyler in Battle Ground says:

    24.9 just west of bgb! No wind!

  23. BGB41 says:

    18Z GFS @ Troutdale.. Nice snow storm and arctic outbreak in la la land..cmon 00Z..back it up!!

    Let’s give Rob credit here, he said 24 hours ago that the GFS would come around to a colder solution.

  24. BGB41 says:

    737pm… already 22 degrees at the Battle Ground lake entrance.

    • Andrew Johnson says:

      Wish we could get some legit clearing down here. 31

    • BGB41 says:

      It cleared off right at 4:00pm just before sunset. Only hit 33 today under low clouds and now very clear skies. I am sure some areas are going to bottom out around 18-20 degrees tonight in Clark co.

    • RobWaltemate says:

      Super clear out here; should be nice for clam digging tomarrow here at the Long Beach Peninsula. Just make sure you don’t have to buy any gas if you come here!

  25. RobWaltemate says:

    Haha. On the year end stuff I see Aug 14 is thus far the hottest for most as well as Nov 24 as the coldest.

  26. Ryan (Walnut Grove) says:

    18Z delivers the goods. 🙂

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

    Rob “Wrath” S.E. Portland says:
    December 30, 2010 at 1:45 pm

    Yeah, no switch to PDX-DLS offshore flow until 6-8 PM I think.
    Pressure Gradients
    As of 6 PM
    PDX-DLS: +0.2mb | 0.8mb Decrease
    TTD-DLS: -0.3mb | 0.7mb Increase *Switch to offshore.

    Hey, not bad 🙂

    • Rob "Wrath" S.E. Portland says:

      UP to 27.3 after dropping to 26.9 briefly.

    • RobWaltemate says:

      temp is at 27.4 DP 23.5 wind calm, but a breeze is from the SSE or ENE today. Presure about 1018.
      Brrrrrr, but better than 38 and rain!

  28. Andrew Johnson says:

    Skies starting to clear in Silverton.

  29. Kirk (Sandpoint Idaho) says:

    17deg here with 12inches of new snow from yesterday

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

    KPTV Tower Temps
    As of 3 PM
    T1: 29.8
    T2: 26.4
    T3: 33.4

  31. Tyler in Battle Ground says:

    The east winds will help blow the inversion out of here at least temporarily.

  32. alohabb says:

    Man, just like that….down to 32! Make sure to cover outside water spickets, cover foundation vents, and change your furnace filter if you have not yet done so. I can already hear the calls coming in!

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

    Just like that! I’m down to 31.4

    Tower Temps are chilly!
    Coldest temp at lower tower. Thin inversion layer is still in place above 1,500′ or so.

    • Mat the Salmon Killer says:

      Does that mean the upper levels are gonna warm before the lower levels thus in five days when moisture gets here it’ll be a cold rain or is the inversion short-lived?

  34. wendy-silverlake,WA says:

    I know it’s way too early to get excited, but looking at the 16 day obs, looks like a ton of snow coming up. Two weeks away though, will probably change a zillion times before then. First time though I’ve seen cold that far out. Usually it’s been jumping the temps up past day 10ish.

    • Ryan (Walnut Grove) says:

      There is some credence to the change. Ensembles have been showing this pattern change for a little while now. Models are coming in line with that data now.

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