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Planning for the Weather

Questions and reports related to Sierra Nevada current and forecast conditions, as well as general precautions and safety information. Trail conditions, fire/smoke reports, mosquito reports, weather and snow conditions, stream crossing information, and more.

Re: Planning for the Weather

Postby Shawn » Mon Oct 19, 2015 11:33 am

Hey - thanks Dave for the info. I haven't looked at the CDEC stuff for a long time; some really nice improvements to the map of all the (very) many remote stations make it much easier to navigate.

I looked at the WX data for Farewell Gap, as shown below. What do you imagine is the data for the Snow WC indicating when it goes from a positive reading at night to a negative reading by day and back to a positive value again?

Date / Time SNOW WC
10/19/2015 01:00 19.60
10/19/2015 02:00 19.46
10/19/2015 03:00 25.04
10/19/2015 04:00 15.47
10/19/2015 05:00 17.72
10/19/2015 06:00 -3.72
10/19/2015 07:00 -6.54
10/19/2015 08:00 -2.73
10/19/2015 09:00 -6.55
10/19/2015 10:00 0.70
10/19/2015 11:00 10.25
10/19/2015 12:00 11.62



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Re: Planning for the Weather

Postby SSSdave » Mon Oct 19, 2015 11:44 am

I'd guess one issue with some sensors is mechanisms getting stuck from freezing water and riming. Remote sites also use solar cells and batteries that when temperatures drop low at night will have less output so might give odd readings.
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Re: Planning for the Weather

Postby Shawn » Mon Oct 19, 2015 1:48 pm

Ah, that must be it; thanks.
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Re: Planning for the Weather

Postby maverick » Thu Dec 10, 2015 3:19 pm

Need a refresher course on understanding/reading mountain weather, this is a good one:

http://pafc.arh.noaa.gov/classroom/prac ... untain.php
HST= Wilderness Adventurer who knows no bounds, except for their own imagination, and where the trail ends is where our adventures begin.

Have a safer backcountry experience by using the HST ReConn Form 2.0, named after Larry Conn, a HST member: http://reconn.org
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