How About Those Crazy “Asperitas” Clouds This Afternoon?

10pm Wednesday

Thanks to all of you that sent it pictures of the neat clouds just ahead of the rain today.   This one is from Larry Cloud…


They are named ASPERITAS clouds (formerly Undulatus Asperatus).  The name comes from the Latin word for “roughness” or “harshness”.  In fact the name just changed last year as the World Meteorological Organization decided it was time to give them an upgrade with this very detailed explanation:

“Well-defined, wave-like structures in the underside of the cloud; more chaotic and with less horizontal organization than the variety undulatus. Asperitas is characterized by localized waves in the cloud base, either smooth or dappled with smaller features, sometimes descending into sharp points, as if viewing a roughened sea surface from below. Varying levels of illumination and thickness of the cloud can lead to dramatic visual effects”

There you have it.  I’ve seen these maybe once/twice a year in our area, which is pretty rare considering how many clouds we get in 365 days!

Here are some more pics from viewers…enjoy a little slideshow!

This slideshow requires JavaScript.

Chief Meteorologist Mark Nelsen


26 Responses to How About Those Crazy “Asperitas” Clouds This Afternoon?

  1. Sprayandpay says:

    If they were still spraying as bad as Dec we would’ve still been stuck in that “ridge” that wouldn’t go away.

  2. Sprayandpay says:

    Less spraying and many on 1 Pacific redwood’s channel have said that even Cali has gotten rain which they badly need. There has been way less spraying the moment MR Trump shot down the climate globalist crap and interestingly enough we are getting more rain and snow levels finally starting to dip like they should.

    This is the pattern we were suppose to have gotten in Dec but they were spraying hog wild with lines going east to west doing the half circles and X’s.

    The (chemtards) as you Liberals call it are right on the money. Never fails to amaze me.

    • boydo3 says:

      That’s exactly what my Martian friends told me during my astral trip across the solar system.

  3. Lee Wilson says:

    Those clouds warning of wha was to come.
    I’d say they were dead on.

  4. JohnD says:

    Longer term, wondering about the near historic imminent outbreak in Alaska. E.g. How this could play into our region–if at all. Thoughts?

  5. Lee Wilson says:

    We got 2 bouts of hail.

    Has there been any thunderstorm activity by chance ?

  6. WEATHERDAN says:

    Looking colder late next week. Snow maybe down to ik. Lower, um maybe. Peace.

  7. Joshua Downtown PDX says:

    Slight chance of snow late next week. More likely that we see a few flakes in the air. Pretty cold overhead temps for a day or two. Not a ton of precipitation to work with. Things can and will change as we know.

  8. Roland Derksen says:

    Great looking clouds. The best “asperitas” clouds I ever saw were back in June 1994 here- almost as good as the ones presented in this blog!

  9. Diana F. says:

    WOW incredibly cool clouds, absolutely gorgeous! Thanks to all who took the time to send in pics, and thanks, Mark, for compiling and posting! The beauty of Mother Nature never fails to amaze.

  10. Alohabb says:

    Weather watchers are crazy on the coast today. Parking all along 101. I actually think a person fell over the wall at Depoe bay Rescue everywhere and coast guard hovering over

  11. A wild night up this way: wind, rain, hail, thunder, lightning. Needless to say, I didn’t sleep well.

  12. GTS1Kft says:

    Wow, is this for real? What a bunch of mumbo jumbo fake-a-loo weather crap. Trying to feebly analyze the wonders of nature and quantify it down to brass tacks, a real fools game we will someday soon realize. I see this just as another arrogant, spoiled and systematic symptom of a society thinking that somehow they are in control of the weather and climate. No wonder their children are addicted to their cell phones and eating detergent to shock their greedy parents.

    Just trying to beat him to the punch….

  13. anuheaikauatuahine says:

    I got some photos of them, too. I love them!

  14. JohnD says:

    Great pictures! I was definitely marveling at the spectacular clouds earlier today too!

    Amazingly cold outbreak still setting up for Alaska!
    If only even a fringe of it would make its way into our region!

  15. Larry says:

    It was amazing, I’ve only seen them a couple other times.

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