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Winds at altitude

PostPosted: Mon Aug 19, 2013 2:58 pm
by tbaranski
Good morning.

With the preliminary Mammoth area forecast for next week looking "breezy", I'm wondering what to expect up high. If winds in Mammoth are, say, 15mph, what can one expect up in the ~13k range?

Re: Winds at altitude

PostPosted: Mon Aug 19, 2013 9:41 pm
by colinr
tbaranski wrote:Good morning.

With the preliminary Mammoth area forecast for next week looking "breezy", I'm wondering what to expect up high. If winds in Mammoth are, say, 15mph, what can one expect up in the ~13k range?


Getting excited about the upcoming trip, eh?

Personally, I generally would not be concerned by what you are describing. Maybe play it safe by packing a windbreaker, beanie, and by preparing for potential 20-30 mph gusts. Sure it could be a bit more or less, but it is hard to guess this far out.

Weather.gov point forecasts (enter a specific mountain name or coordinates, or click a spot on the map) or zone area forecasts (Mono County, Sierra Nevada from Yosemite to Kings Canyon, and Eastern Sierra) might be worth keeping an eye on if you want detailed forecasts for areas away from town/up in the mountains.

http://forecast.weather.gov/MapClick.php?lat=37.69006926278757&lon=-119.19393539428711#.UhJ8wT-3PJs

The great news is that the low pressure system and thunderstorms will likely clear out for you. Looks like great weather coming up. I like breezes up to a point. They keep me cool on warm hikes.

Re: Winds at altitude

PostPosted: Mon Aug 19, 2013 9:44 pm
by mrchad9
Yup. I'd say the wind could be anywhere from zero to 30 mph. Never know. Plenty of times I've been out when it was windy down below, even on the route, but then arrive at the summit and hardly a breeze. Others it might be a bit windy.

Its the saddles where it is always worst.

Re: Winds at altitude

PostPosted: Tue Aug 20, 2013 6:06 am
by WyomingSummits
mrchad9 wrote:Yup. I'd say the wind could be anywhere from zero to 30 mph. Never know. Plenty of times I've been out when it was windy down below, even on the route, but then arrive at the summit and hardly a breeze. Others it might be a bit windy.

Its the saddles where it is always worst.

Like the saddle between Middle and South Teton......it's like a fricken hurricane there constantly.

Re: Winds at altitude

PostPosted: Tue Aug 20, 2013 4:43 pm
by kevin trieu
at first glance at the title I thought you were referring to passing gas at altitude.

Re: Winds at altitude

PostPosted: Tue Aug 20, 2013 6:16 pm
by mrchad9
kevin trieu wrote:at first glance at the title I thought you were referring to passing gas at altitude.

I've experienced that too!

Re: Winds at altitude

PostPosted: Tue Aug 20, 2013 6:23 pm
by myles
mrchad9 wrote:
kevin trieu wrote:at first glance at the title I thought you were referring to passing gas at altitude.

I've experienced that too!

Yeah, with that thinner, lower-pressure air all around, things just wanna equalize ... :lol: