Re: Late runway switch/thunderstorm
To get to an alternate after doing a go round.
"Normal" reserver on a nice weather day is 45 minutes of fuel. There was no forcasted weather at our destination so that's all they gave us. We burned about 15 minutes deviating around a storm over Memphis and then got vectored around a bit down low to get to the airport due to another storm. Jets gulp gas down low. So, figure we went missed (which uses about 400 pounds of gas with the power increase) we would have been down to 20 minutes or so of gas total. In order to do a go around (if we had to for the second time) you need about 800 pounds a side (1600 total) so it would have been pretty much impossible if we had went missed the first time, waited around (or boogied to another airport) to go missed again.
Moral of the story... summer weather = extra gas no matter what.
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