Another super-hot day is expected in Socal today, with temps here above 100. I can’t wait.

I have to do a mea culpa on recent weather posts. The heat index numbers I’m getting from my weather source just don’t seem right. I did some research, and it looks like the relative humidity measurement of my source is stuck at 100%. This is a problem, because heat index is calculated based on temperature and relative humidity (or dew point). From Wikipedia:

So it’s a little complicated, but if relative humidity measurements are wrong, then the heat index is wrong. Oops.

I started wondering why I was getting such extreme numbers when I was sure the humidity wasn’t extreme. Now I know. I’ve gone back and edited the most recent posts based on this new information. Always happy to learn something and correct myself.

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