Not a typo. And it probably wouldnt be extreme by itself, but it went on top of a perfect storm of secondary issues outlined in the video that made it so that it did become a compounding factor.

EDIT: Another thing to point out is that while the kind of heat we are having right now is within the normal temperature range for summer, it came about a month early. So a lot of people were not ready for it.

Not a typo. And it probably wouldnt be extreme by itself, but it went on top of a perfect storm of secondary issues outlined in the video that made it so that it did become a compounding factor.