• Alabaster_Mango@lemmy.ca
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    14 hours ago

    Ok, I live in Alberta, Canada. I grew up in the woods of Northern Alberta. We can get week long bouts of -40°C/F and I have NEVER seen or heard of exploding trees in the area. Are American trees just weak, or is this fake?

    • Bluewing@lemmy.world
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      2 minutes ago

      The trees don’t “explode” but young spindly trees can shatter if the conditions are just right, (and they are not right now). It’s very rare to have happen.

      Source: I live in northern Minnesota. And I live closer to Winnipeg than the Twin cities.

    • bryndos@fedia.io
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      3 hours ago

      I’d guess it’s the species that grow there. If they regularly see -40C they’d have to have evolved to cope with it.

      t could also be part of how they grow - i dunno maybe narrower / more flexible rings, better insulation, or better ways to store sap in winter conditions.

      I assume this is in an area where such a temperature is very rare.

      Most trees do have some radial cracks in them though - probably just some very rare cases those cracks get big enough for the tree to fall or split visibly on the outside and someone calls it an “explosion” for dramatic effect.

    • Slatlun@lemmy.ml
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      8 hours ago

      It isn’t common, and explode is an exaggeration for what I have seen - just cracked bark (though the crack was probably abrupt and loud). Montana gets some every now and again, so I am guessing at least some parts of Alberta do too. Nobody has made a big deal about it in the past outside of folks interested in trees. This is some weird media hype.

    • hector@lemmy.today
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      4 hours ago

      I have been in extreme cold and not heard of this either. When it gets below 0 f, they make noises, like cracking, but just noise.

    • prettybunnys@piefed.social
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      12 hours ago

      Trees further south have different conditions.

      When we get cold snaps before 15f in the mid Atlantic tree sap that doesn’t usually freeze will freeze and limbs will pop. I’ve never seen a tree explode but I’ve definitely heard trees blowing limb and bits of themselves in the woods. Wind exacerbates the phenomenon

    • protist@mander.xyz
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      13 hours ago

      I’m going to guess it has to do with how quickly the temperature change occurs, or other environmental factors prior to the freeze. It seems to be a somewhat rare occurrence, even in places where it gets very cold

        • buffing_lecturer@leminal.space
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          11 hours ago

          Huh TIL

          The maximum daily temperature anomaly associated with the wind ranges from +13°C in the northwest to +25°C in the southeast. The temperature rise at the onset of the event is abrupt and steep; an increase of 27°C in 2 minutes has been observed.

          • SchmidtGenetics@lemmy.world
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            11 hours ago

            They also create clippers on their way to the states, hence the term Alberta Clipper.

            The chinook, which in part originates the Alberta clipper, usually brings relatively warm weather (often approaching 10 °C (50 °F) in the depths of winter) to southern Alberta itself, and the term is therefore not used in Alberta.

            We uhh…. Just had a chinook last week, sorry.

            • acockworkorange@mander.xyz
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              15 minutes ago

              I think so. Wind chill is a roundabout way of comparing the capacity for heat extraction of moving air vs stagnant air.

    • chuckleslord@lemmy.world
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      12 hours ago

      It was raining here two weeks ago. Temperatures were in the 20-30s earlier this week. It’s being far below freezing AND recent warm weather that’s the danger.