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Thread: Flying Sunday, 7/1/18

  1. #1
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    Flying Sunday, 7/1/18

    Time to go flying. Haven't been for a few weeks and I'm missing it. I need to keep practicing. for sure.

    Flight planning tonight.. the RASP looks ok for tow a bit after 12 noon with a turn around in the area of T15.
    Could go slow to Hayfork, but thermals are more like bubbles than a convection/ convergence line.
    In fact, no discernible convergence line on the RASP and surface winds are nil from T-15 to Hayfork. Why bother!
    Besides there is a TFR in the area near the Buckhorn TP, which is the only viable place to turn around at if i wanted to push past T-15.
    - TFR - South of Weaverville Area - 7 mi radius up to 10k, includes Buckhorn turnpoint.

    Coming south, after a comfortable turnaround at 2:30 PM, we'll have a easy run down to Goat. TFR over walker is much smaller as of tonight (smaller than it has been).
    - TFR - Walker Ridge Area - Pawnee Fire 6 mi radius up to 6,000 msl

    If the top stays at 6,000, we could pass over the top of it and head down to Bessa Towers for the final glide back to WSC at 5 PM. Thomas and I will get an update on the TFR's before takeoff.

    Tonight I went over to the Nut Tree Airport and snapped a photo. View to the NW from Vacaville - Saturday evening near sunset..
    Click image for larger version. 

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    Last edited by Peter Kelly; 06-30-2018 at 11:16 PM.
    Peter Kelly

  2. #2
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    Re: Flying Sunday, 7/1/18

    Update 8:15 am sunday

    Rats. Looks like the high moved in faster than previously fcsted to dominate and stabilize our region. (and stronger surface winds in the valley as well.

    I still plan to fly but with a 1:30 PM launch and only a short flight up to Yola Peak.
    Might need to motor from Goat over to the first thermal over Snow Mtn., but once we are up to 9,500 we can proceed to Yola Wilderness area ok. No flight south of goat on the way home. Much shorter flight is now planned.

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    Peter Kelly

  3. #3
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    Re: Flying Sunday, 7/1/18

    Peter
    Could you suggest a book/document/other which makes the connection between the arrival of a Hi pressure area and the onset of stable air? I thought that high pressure would translate to upper (colder) air moving downward toward the earth's surface, displacing warmer air, and therefore setting up an unstable atmosphere where the sun's heating of the earth's surface would produce thermals. (Guess I'm wrong.) thanks.
    Leon

  4. #4
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    Re: Flying Sunday, 7/1/18

    Quote Originally Posted by Leon McCaughan View Post
    Peter
    Could you suggest a book/document/other which makes the connection between the arrival of a Hi pressure area and the onset of stable air? I thought that high pressure would translate to upper (colder) air moving downward toward the earth's surface, displacing warmer air, and therefore setting up an unstable atmosphere where the sun's heating of the earth's surface would produce thermals. (Guess I'm wrong.) thanks.
    Leon
    All concepts are too extensive to discuss here - for sure. Sorry to disappoint.

    EDIT - SEE RELATED POST/ RESPONS BELOW ON THIS THREAD.
    PK
    Last edited by Peter Kelly; 07-02-2018 at 10:19 AM.
    Peter Kelly

  5. #5
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    Re: Flying Sunday, 7/1/18

    Post flight report.
    Good day today..
    Thomas and I rescheduled out takeoff time, based on the pessimistic RASP this morning, so we delayed the takeoff from 12 to 13:30.

    Nick gave us a tow to 7,000 over Tree Farm, and we let go in 5 knots of lift. Nick said it was even better over Goat so we moved west and climbed even faster. It was an easy day of flying, with the lift having been forecasted accurately by the RASP. We stopped our climbs at 14,000 up near Yola Peak and T-15, simply due to the lack of oxygen.
    We saw only two clouds all day and they were over Yola Peak area.
    Easy glide home via Colusa - just to burn off altitude.
    Leaving Yola at 14,000 we were more than 3,000 above glide to get home, so we detoured over to Gravely just to check out the lift over the Hull Mtn ridge and for a change in scenery.
    Nearly 3 and a half hours,
    The flight trace:
    Click image for larger version. 

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    Circled with hang gliders over Hull Mtn near Gravely Valley TP. Hit a thermal there and climbed, just for the fun of it.

    Thomas couldn't resist turning over Snow either, but we were heading home and we had plenty of altitude.

    Flight is on OLC

    The log is here:
    Attached Files Attached Files
    Last edited by Peter Kelly; 07-02-2018 at 05:40 PM.
    Peter Kelly

  6. #6
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    Re: Flying Sunday, 7/1/18

    Quote Originally Posted by Peter Kelly View Post
    All concepts are too extensive to discuss here - for sure. Sorry to disappoint.
    Leon,
    As usual I was quite tired from my flight last night so the above was an abbreviated response. Your comments are helpful and may prove to be helpful to others. I created a new thread in response to your comments. see...an adjacent thread here on this Forum...

    https://www.williamssoaring.com/news...er-1-July-2018
    Peter Kelly

  7. #7
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    Re: Flying Sunday, 7/1/18

    Photos for the flight story.
    Leaving Vacaville, driving north on 505 smoke was different than yesterday.

    Looks like it's burning on the east side of Lake Berreyessa
    Click image for larger version. 

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    Bessa Dam on left - Esparto on the right
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    Nick towing us to the hills
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    Thomas climbing us over Snow Mtn. Gravelly/ Lake Pillsbury behind the left wing.
    Click image for larger version. 

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    good visby across the Sacto Vly - Lassen on the right, Shasta on the left
    Click image for larger version. 

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    The two clouds for the day - bases over 14,000 ft
    Click image for larger version. 

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    Sharing a thermal with a hang glider over Gravelly TP/ Hull Mtn
    Click image for larger version. 

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    Cruising from Snow Mtn to Colusa, see firest to the south.
    Pawnee fire on the right, County fire on the left.
    Click image for larger version. 

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    Peter Kelly

  8. #8
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    Re: Flying Sunday, 7/1/18

    Runways on glide home...


    Short flight from St John TP to Montgomery TP
    Click image for larger version. 

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    Typically we land to the south at Montgomery
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    EDIT - I HAVE NEVER BEEN TO MAXWELL, SO I DON'T KNOW IF IT IS, OR IS NOT REALLY A USABLE FIELD FOR GLIDERS.

    passing overhead Maxwell Northeast of town/ west of I-5 in the red circle
    Click image for larger version. 

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    Heading north over Maxwell ... see runway
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    Zoom in on above photo... and the winds typically favor landing to the south, just like at WSC...
    Click image for larger version. 

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    Last edited by Peter Kelly; 07-02-2018 at 01:46 PM. Reason: CAVEAT
    Peter Kelly

  9. #9
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    Woodland
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    Re: Flying Sunday, 7/1/18

    Another great flight with superb PK teaching and in a magnificent glider. I always learn something new and I am forgetting less that I have already learned. Thanks Peter and everyone at WSC.

  10. #10
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    Santa Rosa
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    Re: Flying Sunday, 7/1/18

    Peter, Thanks for sharing your analysis and photographs! Always enjoyed by me and I suspect many others...

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