JS has a lot more experience than I flying the Great Basin, but in the FWIW
category, the winds aloft forecast will have the forecast temperatures
aloft.

I just got a forecast of the DUATS net for a VGT to RNO flight for tomorrow
morning and the forecast temps at 12K MSL is +09 and at 18K MSL at -09.

Freezing level forecast is:
Freezing Level
Idaho ... 14,000 feet to 15,500 feet.
Montana ... 12,500 feet to 13,000 feet eastern. 13,000 feet to 14,500 feet
remainder.
Wyoming ... 13,500 feet to 15,500 feet.
Nevada ... 15,000 feet to 16,000 feet.
Utah ... 15,000 feet to 16,000 feet.
Colorado ... 13,500 feet to 15,500 feet.
Arizona ... 15,000 feet to 16,000 feet.
New Mexico ... 14,000 feet to 15,500 feet.

So if you plan on staying too long above 15KMSL, mmmmmm

BT

"JS" wrote in message
ups.com...

wrote:

3) Does a glider flying in the Great Basin area in July, between 15k
and 18k for 7+ hours, really need tail ballast anti-freeze?

~ted/2NO

It's not necessary, Ted!
Just load it to MGW and your desired C/G and have fun.
Jim