Eamonn O'Brien-Strain on Nostr: As the planet warms due to climate change, the threat of heat waves looms larger than ...

As the planet warms due to climate change, the threat of heat waves looms larger than ever. Extreme heat isn't just uncomfortable; it can be deadly, especially when combined with high humidity.



To help visualize this growing danger, I've created a new website: **[Dangerous Heatwaves](https://wetbulb.netlify.app )**



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What Makes a Heat Wave Dangerous?

The site focuses on a key metric called the wet-bulb temperature. This isn't the temperature you see on the thermometer. Instead, it's the lowest temperature you can reach by evaporating water – a crucial concept for understanding how humans handle heat.



We cool down by sweating, a process that relies on evaporation. When the wet-bulb temperature gets too close to our body temperature, sweating becomes ineffective. That's when the risk of heatstroke and other heat-related illnesses skyrockets.


<li><strong>Low humidity</strong>: Even with high temperatures, low humidity means a lower wet-bulb temperature, reducing the danger.</li>
<li><strong>High humidity</strong>: This is the worst-case scenario. When it's both hot and humid, the wet-bulb temperature rises, making conditions extremely hazardous.</li>

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How the Site Works

The [Dangerous Heatwaves](https://wetbulb.netlify.app ) site analyzes weather forecasts for locations around the world. It highlights the areas with the highest predicted wet-bulb temperatures in the coming days, giving you a real-time snapshot of where the risk of dangerous heat is greatest.



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Why This Matters

Understanding wet-bulb temperature and its impact is essential for preparedness and planning. Whether you're concerned about your health, outdoor activities, or the well-being of vulnerable populations, this tool can help you stay informed and make smart decisions in the face of extreme heat.






Reply to this article at [@eob@social.coop](https://eamonn.org/@/eob@social.coop )