Wet Bulb Temperature Soon to Become Leading Cause of Death


As our Abrupt Climate Change Catastrophe becomes more extreme the leading cause of death on the planet will be humans hitting their   Wet Bulb Temperature.

Robertscribbler has written about this phenomenon here:

Never-before-seen high temperatures and high humidity are resulting in thousands of heat injuries and hundreds of heat deaths across India. In some places, wet bulb readings appear to be approaching 35 C — a level of latent heat never endured by humans before fossil fuel burning forced global temperatures to rapidly warm. A reading widely-recognized as the limit of human physical endurance and one whose more frequent excession would commit the human race to enduring an increasing number of episodes of killing heat. A boundary that scientists like Dr. James Hansen warned would be exceeded if a human-forced warming of the world was not halted.’  Article continues.

Wet Bulb Near 35 C — Heatwave Mass Casualties Strike India Amidst Never-Before-Seen High Temperatures.’

Short cut to calculating Wet Bulb Temperature

“In a recent study with Matt Huber, we showed that it doesn’t take that many degrees of global warming to permit peak heat summertime heat stress to (occasionally) become unsurvivable, in many parts of the world that are currently highly populated.”

“We came to this conclusion by considering a meteorological quantity called the wet-bulb temperature. You measure this quantity with a normal thermometer that has a damp cloth covering the bulb. It is always lower than the usual or “dry-bulb” temperature; how much lower depends on the humidity. At 100% humidity (in a cloud or fog) they match. In Sydney and Melbourne, even during the hottest weather, the wet-bulb usually peaks in the low 20’s C. The highest values in the world are about 30-31C, during the worst heat/humidity events in India, the Amazon, and a few other very humid places.
Climate Change Research Centre (CCRC) – The University of New South Wales Sydney NSW  Australia, paper shared here:  ‘What is Wet Bulb temperature?

Orange – Heat stroke probable, Red – Heat stroke imminent

Heat Index

I'm an anti-imperialist, environmental activist and blue ocean sailor, who is passionate about the earth and all it's inhabitants without favour. Brace for imminent impact as we bare witness to the non-linear unraveling of the biosphere and habitability disappearing for most if not all complex life on the only habitable planet we know of. To quote President Niinistö in North Russia: ‘If We Lose the Arctic, We Lose the World’. Folks we have lost the Arctic.

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Posted in Habitat, Rapid Climate Change, Warnings
131 comments on “Wet Bulb Temperature Soon to Become Leading Cause of Death
  1. Oh gee, they’re finally putting it on corporate news. Ain’t that a hoot? Can we say oopsie?


    Liked by 1 person

  2. Kevin Hester says:

    Many of the deaths in extreme heat events, like the record-breaking one in the Pacific Northwest, could be foreseen, a scientist told Congress.



    • After a too-warm Spring with no fricking rain in these mountains, 100’F on 2June, 116’F on 29June and the first damn wildfire upwind of me on this ridgeline on that day, I am really not looking forward to next Spring and Summer. It’s going to be hotter, there will be more fires and probably earlier, and there’s nothing I can do about any of it. Somehow I’m rather dubious about the wealthy suddenly having an epiphany about what their insane greed is leading to.

      Am I going to have to break down and buy an AC unit? I have never lived with one of those machines or used them in a vehicle.

      I cannot imagine living where the ground is nothing but asphalt and concrete though I did the first 33 years of my life in Ocean Beach & Mission Beach San Diego. But at least there was the ocean in front of me as a limitless vista for the eyes and beaches to run on and the sea to be on, and under into another world of wonders. Treasured moments in memory.

      The second 33 years has all been in mountains but like what’s been said, I can’t go sit under the canopy in the shade with Wet Bulb levels. But I have this coming winter to live in, ya know? Best enjoy every minute of it is what I’m thinking.

      Froze last night, ice on the roofs this morning. Incredibly clear sky last night. Still too warm for this time of year. In 2004 the thermometer hit -30’F at the end of October and I doubt I’ll ever see that again…


      Liked by 1 person

  3. M Bee says:

    Can’t believe someone posted a graph using Fahrenheit, lol. Hello?

    Liked by 1 person

    • Convert in your head to C isn’t a problem is it? Depends on which country one has grown up in whether C or F measurements are the standard.

      Metric is easier once a person gets used to doing the switch in your head.


      Liked by 1 person

  4. Kevin Hester says:

    Wet Bulb Temperatures not even mentioned. This happens frequently in Australia when cars break down in the desert.
    People have been known to have drunk their radiator and wind screen washing water.


    • I don’t even go outside when the temps hit 90’F/32C. Fans, swamp cooler going, cold sun tea/water, book. This last late May/June/July/August/early September was the least amount of time I’d spent outdoors in my life I think. It was too hot to do anything, and I was dodging wildfires, unhealthy to hazardous air quality from the smoke, not just the heat.

      Didn’t think this mountain area next to Canada was part of the Sonora Desert when I moved here 18 years ago…Silly me! But I swear, that damned desert moved north!

      But doing an 8 mile hike in the mountains known for not having shaded areas, with one measly water bottle for two adults, a little kid, and a dog? And they didn’t bother to check the weather beforehand; what it was the day before? Or maybe they thought walking in the higher mountains than down in Mariposa would be cooler because in August the used-to-be-normal weather has always been miserably hot.

      Well, it obviously was cooler in the morning but this wasn’t a bright move on their part. Ignorance or stupidity, both kill in extreme weather. They may be good at their jobs but obviously they didn’t know what the hell they were doing or they wouldn’t be dead.


      Liked by 1 person

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Kevin Hester

Kevin Hester is currently living on Rakino Island, a small island in the Hauraki Gulf near Auckland, New Zealand, monitoring the unravelling of the biosphere and volunteering at the Rakino Island Nursery is currently developing a proposal to create a marine reserve near by. The Island has no grid tied electricity or reticulated water.  I catch my own water from the roof and generate my electricity from the ample solar radiation on the island.

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