>>212292633>>212292707>And how many millions of Americans died in this incident?I don't know what the OP's incident was and I don't care enough to look it up, but if it did happen and wasn't very localized and/or brief (like every other natural example we've had so far) then bunch of Americans would probably die.
>And how come it has never happened in history and mankind inhabits even insuffrable hellholes like borneo and the deep amazon?It does, but as I said it's very rare in nature because typically if your air moisture is that high you're getting clouds and they will naturally cool down the ground and you'll get rain, etc. This is why it always feels hottest before a rainstorm - the moisture is high and wet bulb temperature is probably hitting like 15-20 degrees which is already noticeably unpleasant but not really dangerous.
>>212293068It's thermometers. Think old-school mercury thermometers - they got a bulb at the bottom. Normal temperature is dry-bulb - it's just ambient air temperature. Wet-bulb is literally what it says, you keep the bulb wet (not putting it in water, typically it's a moist cover), and that wetness lowers the thermometer temperature through evaporation. If it starts closing in on normal body temperature (usually said to be 35 degrees C) then the heatstroke will get you in hours.
>>212294228Looking it up Humidex isn't just pure wet-bulb. The Humidex table apparently goes only to 59, 46 is the dangerous point they put there and the aforementioned 35 degrees wet-bulb is pretty much off the scale.