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Thread: Wave Watch: Thu - Sat Dec 1-3

  1. #1
    Join Date
    Jan 2011
    Location
    Menlo Park, CA
    Posts
    931

    Wave Watch: Thu - Sat Dec 1-3

    The setup has held fairly steady over the last few days, so I'm highlighting this for next weekend, all 700mb:

    Name:  700Dec01_180day.png
Views: 248
Size:  19.9 KBThu @ 4p Name:  700Dec02_204day.png
Views: 240
Size:  24.4 KB Friday @ 4p Name:  700Dec03_228day.png
Views: 241
Size:  21.6 KB Sat @ 4p

    Saturday looks to be the best setup as it's most easterly and the wind speed is lower. Thu afternoon is 50kts @ 11,000 ft, which is a bit much. Too much wind means the XC is limited, and the cost for a mistake is higher. Ideally, we like to see 20-25kts @ 850mb (ridge line), 30-35kts @ 700mb, and 40-50kts @ 500mb (top of usable airspace). Will update in a couple of days...

    If it holds, we can consider a Sat flight to over San Francisco again, and return. Have to prove out that return route you know. Who's up for it?
    Kemp
    ASH-25 (FNX)

  2. #2
    Join Date
    Aug 2014
    Location
    Menlo Park CA
    Posts
    296

    Re: Wave Watch: Thu - Sat Dec 1-3

    I'm up for it sat. Need to get home though, as I'm flying out sun on a business trip! What are the blue and maroon isobars on the plot? The legend says "omega." Looking it up, does that mean vertical motion, so the blue is widespread sinking (high) and red is rising air (low pressure)?
    John Cochrane

  3. #3
    Join Date
    Jan 2011
    Location
    Menlo Park, CA
    Posts
    931

    Re: Wave Watch: Thu - Sat Dec 1-3

    Sorry, I've never used omega, so have no guidance on it's efficacy or correlation to wave. Until the RASP comes out, I only look at wind speed, direction, and context (how long since the front passed) at the 850, 700 and 500mb levels....
    Kemp
    ASH-25 (FNX)

  4. #4
    Join Date
    Oct 2016
    Location
    San Francisco
    Posts
    20

    Re: Wave Watch: Thu - Sat Dec 1-3

    Tentatively— if there's a way to join, I'd be interested as well! Star

  5. #5
    Join Date
    Jan 2011
    Location
    Menlo Park, CA
    Posts
    931

    Re: Wave Watch: Thu - Sat Dec 1-3

    As of this morning, Friday's wind is directly north:
    Name:  700Dec01_048day.png
Views: 173
Size:  20.0 KB 700mb
    so there's good local wave, but not easterly enough to justify going south of St. Helena:
    Click image for larger version. 

Name:	press700.curr+2.1300lst.d2_Dec01.png 
Views:	112 
Size:	32.3 KB 
ID:	3478

    So FNX is passing on flying for this Friday.
    Kemp
    ASH-25 (FNX)

  6. #6
    Join Date
    Aug 2014
    Location
    Menlo Park CA
    Posts
    296

    Re: Wave Watch: Thu - Sat Dec 1-3

    Sunday now showing nice wave. Of course -- I'm on a business trip leaving SFO sunday AM. Ugh.

    Click image for larger version. 

Name:	Screen Shot 2016-12-03 at 7.19.02 AM.png 
Views:	114 
Size:	59.7 KB 
ID:	3479

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