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A Massive Saharan Dust Plume Is Moving Into the Southeast US (arstechnica.com) 79

An anonymous reader quotes a report from Ars Technica: A hot desert wind is carrying a massive cloud of Saharan dust into the Southern United States this week. Dust plumes from the Sahara routinely blow westward across the Atlantic at this time of year, but this event is a doozy -- by some measures, the biggest in decades. And a second plume appears to be forming about a week behind the big one. Across the southeastern US, from the Gulf Coast to the Carolinas and potentially as far north as Indianapolis and Cincinnati, dust effects will likely be visible in the coming days. Trillions of dust grains will reflect sunlight in every direction, creating milky white skies. The dusty haze reflects some sunshine back to space, cooling the surface a bit where the plume is thickest.

Longer waves of red and orange light tend to penetrate the dusty haze, so sunrises and sunsets are likely to be especially beautiful. On the downside, where the plume mingles with showers or thunderstorms, downdrafts may carry desert dust to Earth's surface. This will impair air quality and could trigger allergic reactions and asthma attacks. The more dust reaches an area, the more pronounced the effects will be.
Scott Denning, climate scientist and professor of atmospheric science at Colorado State University, goes on to describe what causes these plumes to form.
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A Massive Saharan Dust Plume Is Moving Into the Southeast US

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  • Africa is attacking the US, and it will make you sneeze wahahahahahaha!
    • Actually foot and mouth disease is thought to be caused by dust storms from Africa carrying the disease. Just what is needed with food scarcity on the rise.
    • I bless the rains down in Africa, I passed some rains down in
      Africa
      I bless the rains down in Africa
      Gonna take some time to do the things we never had

    • We need an executive order banning these dust plumes. What's Trump waiting for?
  • View from Space: (Score:5, Informative)

    by Fly Swatter ( 30498 ) on Friday June 26, 2020 @10:55PM (#60233180) Homepage
    NASA link [nasa.gov] for satellite view.

    Also, the lawyers are getting itchy and are asking who they can sue, preferably a class action dust complaint.
    • Re: (Score:2, Funny)

      by Opportunist ( 166417 )

      Typical American. Getting something for free and still complaining.

    • I can confirm that this has been incoming for over a week now. I happened to be down in Mobile, AL over a week ago and the clouds already had an orange tint to them on the East side. It looked so odd, seeing orange-ish clouds at 1pm. I might go back down there in a week - should be interesting.

  • by ArhcAngel ( 247594 ) on Friday June 26, 2020 @11:05PM (#60233196)
    I'm looking for a comparison between Covid-19, Murder hornets, Sahara dust cloud, and anything else!
    • Re: (Score:2, Funny)

      by Anonymous Coward

      Revelation

    • a comparison between Covid-19, Murder hornets, Sahara dust cloud

      COVID-19 is a global pandemic responsible for closing on a million deaths and a huge number of permanently injured people. Additionally, it's caused massive damage to the world economy. It's still spreading, especially through the US, UK, Sweden and Brazil.

      Murder hornets are a non-story that for some reason some news channels decided to devote a small amount of airtime to instead of national politics, a recession, or global pandemic.

      The Sahar

      • by cusco ( 717999 )

        Murder hornets are a non-story that for some reason

        For some reason? For anyone who has ever been swarmed by yellow jackets these things are nightmare come true!

        • I mean, they are like 4 nests in one corner of north america, and they aren't close to actual people.

          • by cusco ( 717999 )

            There have been four nests confirmed so far, all near the Washington/British Colombia border, but there are more. Bee nests were raided in the Skagit Valley last fall, about half-way to Seattle, and a reliable sighting was made near Olympia, an hour south of Seattle. Beekeepers have enough to worry about already, on top of virroa mites and colony collapse disorder, these things will slaughter an entire hive in a day in order to take the grubs to their young. British Colombia is about as far north as thei

  • Could make an impressive promotional spectacle for Denis Villeneuve's upcoming film.

  • I don't know about you, but this climate change thing is certainly exciting. A dust storm from Africa! How novel! I can't wait to see what's next... maybe an ecosystem collapse?
  • by JustAnotherOldGuy ( 4145623 ) on Friday June 26, 2020 @11:45PM (#60233282) Journal

    I always wanted to know what it was like to live during the time of the Civil War, the Spanish Flu, Great Depression, Civil Rights Movement, Watergate, and the Dust Bowl. Just not all at once though.

  • 2013 article: https://earthobservatory.nasa.... [nasa.gov] 2018 article: https://earthobservatory.nasa.... [nasa.gov]

    As exciting as it sounds, it's normal.
  • by sound+vision ( 884283 ) on Saturday June 27, 2020 @12:15AM (#60233356) Journal

    The dust was already here this morning. As a former smoker of various substances I know what different varieties and levels of particulates feel like in my throat. Today I could definitely feel a small layer of something coating the inside of my throat, I felt compelled to mild coughing periodically throughout the day to clear it out. Qualitatively I'd say it's maybe about one-quarter as much coughing as smoking half a pack of commercial cigs a day. If I had to guess, this dust is made up of finer particulates, probably finer than cigarettes, and definitely finer than weed.

    I had a pest control service here to do a heat treatment on a bedroom to kill bed bugs. Since they were heating the room up to 150 degrees for a few hours, the air conditioner got turned off. Even with no A/C and the heater going, it was surprisingly not totally disgusting inside. Seemed to be about 8 or 10 degrees cooler outside than normal for this time of year with southerly wind... didn't even break 90.

    • Today I could definitely feel a small layer of something coating the inside of my throat, I felt compelled to mild coughing periodically throughout the day to clear it out.

      If only there was something a person could strap to the front of their head that covers the nose and mouth, that might filter out unwanted materials... oh, but what's the use."

      • Are N95s available for normal prices yet? I really don't know, I've just been staying away from people to the fullest degree possible, and using the cheap masks that don't filter particulates when I can't. That's one of the reasons I quit smoking this year. It's easier to maintain a distance from people, and easier to budget for the essentials. I'm hooking back up in sweet carnal union with Miss Mary as soon as things change, but I should be broken up with the Marlboro Man for good. Finally, I can become a

    • I suggest that we mass burn some weed to improve the atmosphere for the general welfare.
      • I don't know if it's just easier for me to smell it, or if I'm putting in more miles biking around the neighborhood, but that seems to actually be happening. It's the high grade, too - more flavors than Heinz, Baskin Robbins, or Jelly Belly.

        Here's hoping for a November landslide, so people won't have to keep driving to Colorado. That weird "CBD" shit from the gas station that looks exactly like industrial hemp with all the life sucked out of it - it's just not the same.

  • But I am curious if any locust infestations come with the dust plume?

  • The skies are powdery blue or white. It's still hot and humid as fuck.

  • A Massive Saharan Dust Plume Is Moving Into the Southeast US ...Longer waves of red and orange light tend to penetrate the dusty haze, so sunrises and sunsets are likely to be especially beautiful.

    Forecaster: Remarkable dust storm, the Saharan Orange, idn'it, ay? Beautiful plumage!
    Mr. Praline: The plumage don't enter into it.

  • Since the Covid-19 outbreak, and now summer hitting, the question on my mind is: "fark flying cars, where is my 'still suit'". This news brings that question up again ;)
  • ...now we have to build a wall between the US and the Sahara desert.
  • An African dust plume is immigrating into the US, probably without visa too, ... how ominous.

    Seriously, though. Does Slashdot really need to report on the weather now?

    • Seriously, though. Does Slashdot really need to report on the weather now?

      This story is for all the people who say "how does what happens in other countries affect me".

      Hint: That apparently includes you.

      • Hint: That apparently includes you.

        No, it doesn't. Dust from the Sahara blowing to other continents is ancient news.

  • SyFy will save a fortune on visual effects.

  • Make the dust appear to have come from China... Then the Trumpeteer can blame them. He seems to blame them for everything these days (sic) including his golf handicap (wot! he does not have one...????)

Marvelous! The super-user's going to boot me! What a finely tuned response to the situation!

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