Memorial Day Weekend: Looking Nice!

11pm Thursday

The general weather pattern for the next 4 days is pretty clear, so I’m pretty confident in our weekend forecast at this point.

  1. An upper-level system passes through Eastern Oregon tomorrow and early Saturday.  This brings thunderstorms and even a soaking for spots, especially the far eastern part of the state.
  2. Saturday will be mainly cloudy, cool, and briefly drippy in the morning west of the Cascades.  That’s because a very deep marine layer sits overhead most of the day.
  3. Sunday and Monday the marine layer thins westside and thunderstorm moisture disappears eastside.  The result will be very nice summer-like weather for days #2 and #3 this weekend.

Coast forecast:


Cascade camping forecast…temperatures are for lake elevations…around 3,500′ or so.


Our bizarre spring dry spell continues; we’ve only seen 0.25″ in Portland in 5 weeks!  And we haven’t seen a drop in over two weeks as well


I sure hope we have a soaking at some point in the next few weeks.  But for now models are not showing a soaking, at least in the next 7-10 days.

We’ll be keeping a close eye on the radar tomorrow afternoon as strong thunderstorms develop eastside.  SPC has the eastern third of the state in the MARGINAL RISK area for storms.  Flooding rain, damaging hail, strong wind are the possibilities under some storms.  Keep an eye on the sky over there!


Chief Meteorologist Mark Nelsen


14 Responses to Memorial Day Weekend: Looking Nice!

  1. Roland Derksen says:

    Another dry day today, but tomorrow I could see my first measurable precipt. in the month since over 2 weeks ago. Won’t be much, though.

  2. Aleta Mekvold says:

    Moved to south eastern Idaho a month ago and have had more thunderstorms already then I saw in a year over in Portland! Got to see my first, in person, anvil cloud. It was quite a sight! Luckily nothing came of it! Supposedly more thunderstorms tomorrow.

    • Ken in Wood Village says:

      Beautiful structure 🤗🤗🤗🤗

    • boydo3 says:

      That’s no cloud. That’s a cloaking device used by alien spacecraft.

    • W7ENK says:

      In all seriousness, that’s not an anvil cloud, that’s a shelf cloud. An anvil cloud is the tall anvil shape that extends out from the top of a mature thunderstorm, formed when the top of the cumulonimbus pushes up against the bottom of the stratosphere and spreads out, like hitting a glass ceiling.

      This shelf cloud looks like the base of some mesocyclonic rotation. I’ll bet if you timelapsed that you’d clearly see it spinning clockwise.

      Regardless, that’s a great shot!

      • Aleta says:

        Thank you for the lesson!! It was indeed spinning clockwise. Was pretty cool to see!!

  3. .78 in 35 minutes, 1.15 in two hours…not bad…

  4. …you can watch it on radar, i’ve got a front row seat 🙂 …

  5. Paul D says:

    We need some rain – too bad it ain’t coming anytime soon.

  6. W7ENK says:

    It sure would be nice if we could get in on some of that action, even if for no other reason, the free water for my garden would be welcome.

  7. JERAT416 says:

    Thanks Mark! Enjoy the weekend everyone. I’m hoping for the Rose Festival low to make an appearance and give us all a good soaking that we need. Otherwise, our forecast looks pleasant, at least in my opinion.

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