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Thread: Wave+Thermal?: Fri-Sat March 19-20

  1. #11
    Join Date
    Aug 2014
    Location
    Menlo Park CA
    Posts
    296

    Re: Wave+Thermal?: Fri-Sat March 19-20

    My reading: today will be much better right around williams. If you want to go local soaring off a 2000' or less tow, today is the day! However, clouds will be lower over the mountains and the southern sector. Really the good spot is in the valley for 20 miles or so around williams. It will be a great day to explore things we usually can't do, like thermal to sutter buttes or even cross the valley. Saturday is higher over the mountains, and the chance of making it across the delta and back looks greater. But there is much less lift right around williams and in the valley. The main difference I see is that today the wind is west, tomorrow it comes north straight down the valley. Something's weird with the williams rasp showing a square of no lift around yolla peak that other models don't show. I think that's a model glitch to be ignored. But we aren't going there anyway. With work schedule, I plan to fly saturday. -BB

  2. #12
    Join Date
    Jan 2011
    Posts
    619

    Re: Wave+Thermal?: Fri-Sat March 19-20

    From someone who is crossing the delta regularity (as recent as a week ago) today’s forecast is not encouraging for that, bases are low until later in the afternoon so short window for crossing. And it oooks even lower south of Byron. I am planning to fly tomorrow instead.
    today indeed look great for crossing the valley from Williams to the Sierra foothills. This is what I would do today if I flew from Williams. Opportunity to do something different.

    Ramy

  3. #13
    Join Date
    Jan 2011
    Posts
    627

    Re: Wave+Thermal?: Fri-Sat March 19-20

    Rain and Ramp Space

    For the first time we can remember, Willliams Soaring Center is cutting off the signup for additional privates Saturday March 20th.

    If your name is not already on the schedule to fly with us, unfortunately we are not taking any additional signups for private owners to fly.

    We can put you on a wait list in case scheduled pilots cancel.

    Sunday there are still openings.

    Thanks for understanding.

  4. #14
    Join Date
    Aug 2014
    Location
    Menlo Park CA
    Posts
    296

    Re: Wave+Thermal?: Fri-Sat March 19-20

    sadly cu bases just got a lot lower, more spreadout in the thursday evening forecast update. On the plus side, more cu in the valley. I'm still flying, soaring better than spending the day watching the webcam. Just different task ideas.

  5. #15
    Join Date
    Jan 2011
    Location
    Schleicher ASW-24
    Posts
    2,102

    Re: Wave+Thermal?: Fri-Sat March 19-20

    Good flying. posted to olc.

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    Attached Files Attached Files
    Peter Kelly

  6. #16
    Join Date
    Jan 2011
    Location
    Menlo Park, CA
    Posts
    930

    Re: Wave+Thermal?: Fri-Sat March 19-20

    Friday morning the wave was back in the forecast, so Evan Simmons and I gave it a go:
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    Contacting the Snow wave in amidst the clouds. Not strong, but got us to 15.1k then worked north:
    https://drive.google.com/file/d/1IiH...ew?usp=sharing

    not much else so decided to land, take a break, then go for Flight #2 thermals. Released just E of the field, worked toward Capay, but cu were weak. A North/South convergence line had set up to the east, just this side of the Sac approach. Went over there and had some good climbs going south, then into the west edge of the Sac airspace:
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    Upon turning around, the convergence had disappeared, and we got down to 1,500ft over Bob's Air Service just N of Knight's Landing, grinding around for 25 minutes thinking we'd land for sure, but not giving up yet. It is however tough to maintain optimism when the sky around you looks so poor 😬. The sun came back out and the lift picked up a few minutes after that, good enough to get us up for final glide back to WSC. Whew, a great workout and experience for Evan.

    OLC Flight 1
    https://www.onlinecontest.org/olc-3....l?dsId=8275124

    and Flight 2
    https://www.onlinecontest.org/olc-3....l?dsId=8275160
    Last edited by Kempton; 03-23-2021 at 01:37 PM.
    Kemp
    ASH-25 (FNX)

  7. #17
    Join Date
    Jan 2011
    Location
    Menlo Park, CA
    Posts
    930

    Re: Wave+Thermal?: Fri-Sat March 19-20

    Saturday as many note was forecast to be spectacular and it was, esp. for this time of year. I flew with Melissa on first XC tow at 10:45a, released on Goat foothills (5,800 ft bases), two climbs up to Letz Lake base at 6,500 ft, then from there to nearly Yolla with no circling:
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    Clouds rapidly expanding so by the time we got just S of Yolla, we were under the highest cloud at 8800, then dove down to circle around the N side of Yolla, then return on the E side of the Mendos. A great first intro XC for her.

    Next up was Russ who, when asked about where we should go, half jokingly said "Mt Diablo", to which I agreed. We launch at 2:15p aiming to get to Vacaville and re-evaluate then. Now this is very late in the day to try crossing as Luke notes as we head there. Saw a couple paragliders on the Berryessa ridge. Later that day I find that Evan Cohen, a previous co-pilot and super PG pilot, flew a 130km triangle around Berryessa that day! Now at Vacaville, we see 3 streets across the Delta (look beyond the big cloud shadow in the foreground), so we commit:
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    At the windmills we note they are mostly idle, or turning very slowly. A low over Antioch at 2,100ft but the clouds look great and we get back up quickly:
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    Then, the target! I've only been here once before in thermals, with Gunard in like 2010. But then we only were a few hundred feet above the peak. Now we climb just south of the peak to 6,800ft.
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    Always concerned about the marine air coming in to wipe out the cu, we see over the Berkeley hills these towering cu with perhaps 5,000ft bases. If those are there, we're not concerned about the sea breeze.
    Looking north across the Delta, this is how it looked, unusually nice for 4p:
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    But we still scoot back across the Delta at 80knots or so and figure out what to do next:
    https://drive.google.com/file/d/1IiH...ew?usp=sharing

    We'd crossed W of Travis, and nearing the Vaca ridge, we decide to go towards St. Helena as we could see some convergence like shreds hanging there:
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    The shreds did NOT work, so we got low a few miles south of Crazy Creek, recovered, and tagged Bear Valley for a climb, then came in.
    3.0 and 4.8 hours for each flight, covering alot of ground. What a great day!

    https://www.onlinecontest.org/olc-3....l?dsId=8275254
    Last edited by Kempton; 04-07-2021 at 08:19 PM.
    Kemp
    ASH-25 (FNX)

  8. #18
    Join Date
    Mar 2015
    Location
    Santa Rosa
    Posts
    220

    Re: Wave+Thermal?: Fri-Sat March 19-20

    Saturday 3/20/2021

    I proposed to fill in as co-pilot for the afternoon flight with Kempton in FNX and was accepted for co-pilot duties. We launch at 2:15 PDT after Kempton's morning flight to Yolla. Kempton is such a great mentor in that he seriously solicits co-pilot opinions on where to go next and then after that etc. Even though I didn’t handle the controls much due to our relatively low altitude (4 to 5000’ msl) on the way to Mt. Diablo and return I felt engaged with the flight. Thanks Kempton!! We got low near Byron where Kempton pulled off a nice save and again near Crazy Creek on the return to WSC. I now know how Kempton is able to pull off these low saves, he talks to the thermal like it was a family pet dog!

    Crazy Creek should be considered dangerous for landing, see separate post “Crazy Creek Alert” posted today.


    Travis AFB:
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    Over Antioch looking south.
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    Proof of turning Mt. Diablo:
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  9. #19
    Join Date
    Jan 2011
    Posts
    627

    Re: Wave+Thermal?: Fri-Sat March 19-20

    A bit of OGN screen shot image fun from Saturday March 20th
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    Saw a Paraglider today on the Flarm

  10. #20
    Join Date
    Dec 2018
    Location
    Marin
    Posts
    32

    Re: Wave+Thermal?: Fri-Sat March 19-20

    Wow @noelle I did not realize paragliders were flying with FLARM nowadays. Very cool! I'm going to see if I can figure out who it was. I'd love to hear more about the tech they were using. Will report back

    Edit: It turns out it was a friend Mateo Calcedo, who was flying with an XC Tracer Maxx (https://www.xctracer.com/en/tech-spe...d=1913&lang=en).

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