We had a real Sierra experience with mosquitoes this last week in Yosemite. (TR to follow in a day or two—I’m working on it!) We had hiked cross-country to Roosevelt Lake. The first night in Conness Canyon was at about 8,000 feet, and while it was quite cold at night down in the canyon (37F) there were relatively few bugs.
The next night, at Roosevelt Lake (10,200) it was warmer by a few degrees, but the bugs were fierce. The following day we cross-countried over to Young Lake. Upper Young Lake (10,000+) was a mosquito nightmare—you couldn’t walk without inhaling them. Middle YL was a touch better, at 9,900 feet.
And Lower Young Lake, at 9,800, was better still. We camped out on a dry ridge northwest of the lake, and managed to avoid using headnets for part of the evening! Temperature here was a few degrees warmer still.
Just goes to show that conditions are all local…and if you are at 10,000 feet in the Sierra this week, God help you with the bugs!
