Originally Posted by
tromer
1. The heat was forecast for days, and this wasn't even the first day at those temperatures.
The heat that rolled in yesterday around noon was
not forecast, and was
not the same as previous days (see below). All the forecasters got fooled yesterday, all somewhere around 10 degrees low. A really hot mass of air moved in for a couple of hours--right when your flight was scheduled to take off.
https://forecast.weather.gov/data/obhistory/KSNA.html