Page 1 of 3 123 LastLast
Results 1 to 10 of 21

Thread: Sunday Wave + Thermals

  1. #1
    Join Date
    Feb 2018
    Location
    Williams
    Posts
    13

    Sunday Wave + Thermals

    I've been watching Sunday pretty closely for the last few days and each forecast run has shown good wave in the morning with a remarkably strong thermal forecast (albeit for only a few hours due to lack of daylight) in the afternoon.
    Attached are some screenshots of the skysight forecast for those who don't have a subscription.
    I accidentally uploaded one screenshot from an old forecast run and can't delete it, disregard the image that has run time "12:35PM" as it's two days old.

    I'll likely fly, but not sure which glider yet.
    Who else?

    Click image for larger version. 

Name:	Screen Shot 2020-01-30 at 6.51.33 AM.jpg 
Views:	74 
Size:	113.9 KB 
ID:	5541Click image for larger version. 

Name:	Screen Shot 2020-01-30 at 6.55.10 AM.jpg 
Views:	81 
Size:	100.1 KB 
ID:	5540
    Thomas
    Attached Images Attached Images  

  2. #2
    Join Date
    Jan 2011
    Location
    San Jose, CA
    Posts
    298

    Re: Sunday Wave + Thermals

    I have also been watching the Sunday forecast. I'm planning on flying.
    Pete Alexander -- 98

  3. #3
    Join Date
    Jan 2011
    Posts
    620

    Re: Sunday Wave + Thermals

    Indeed, looks like a strong day. Strong wave, strong wind in the afternoon, and strong thermals to 8K the valley!
    wow!

    Ramy

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

    Re: Sunday Wave + Thermals

    I'm seeing 40 mph N winds throughout the boundary layer and only weak wave. I need some more encouragement!
    John BB

  5. #5
    Join Date
    Jan 2011
    Location
    San Jose, CA
    Posts
    298

    Re: Sunday Wave + Thermals

    I also have the same wind concerns... I have been watching the wind build over the past 36 hours or so.

    Latest RASP runs for 2 pm on Sunday:
    Click image for larger version. 

Name:	BL Avg Wind at 2 pm.jpg 
Views:	72 
Size:	174.8 KB 
ID:	5543Click image for larger version. 

Name:	Cu Cloudbase at 2 pm.jpg 
Views:	66 
Size:	157.5 KB 
ID:	5544Click image for larger version. 

Name:	Buoyancy_Shear Ratio at 2 pm.jpg 
Views:	63 
Size:	139.4 KB 
ID:	5542

    Hopefully, encouragement will come in the next 24 hrs, but...
    Pete Alexander -- 98

  6. #6
    Join Date
    Jan 2011
    Location
    San Tan Valley, AZ
    Posts
    81

    Re: Sunday Wave + Thermals

    Quote Originally Posted by John Cochrane View Post
    I'm seeing 40 mph N winds throughout the boundary layer and only weak wave. I need some more encouragement!
    John BB
    One of the best days I ever had at Williams had 46 mph north winds, got to 11,000 feet in the valley, on thermals.

    Gkemp NK

  7. #7
    Join Date
    Jan 2011
    Posts
    620

    Re: Sunday Wave + Thermals

    Yeah the wind looks crazy. Nearly 90 degrees direction change from NNW on the ground to W at altitude in the morning without increase in velocity, so I have doubt about the wave even in the morning. The post frontal high base cu looks consistent through the day but wind will certainly be a factor with 30-40 knots from the surface to cloud base. Great for straight out to Bakersfield, if we can even launch....

    Ramy

  8. #8
    Join Date
    Jan 2011
    Posts
    620

    Re: Sunday Wave + Thermals

    Gary, if I recall correct you flew straight out downwind that day. Where did you end up? With these kind of wind, you can’t go anywhere in thermals but straight out downwind. Just need crew...
    I flew to Yuma from Hollister in a similar but lighter wind, “only” 25-30 knots at altitude.

    Ramy

  9. #9
    Join Date
    Jan 2011
    Location
    San Tan Valley, AZ
    Posts
    81

    Re: Sunday Wave + Thermals

    Quote Originally Posted by RamyYanetz View Post
    Gary, if I recall correct you flew straight out downwind that day. Where did you end up? With these kind of wind, you can’t go anywhere in thermals but straight out downwind. Just need crew...
    I flew to Yuma from Hollister in a similar but lighter wind, “only” 25-30 knots at altitude.

    Ramy
    This was a different day, Kenny Price towed me, I think I was the only one that towed, flew to Redding took me about 2.5 hours and back in about 30 minutes. The day to which you are referring, I took off at 9:30 from Orland with the intent of setting a National goal flight in Standard class to Pearblossom, ran into the backside of the front at Bakersfield and flew back and landed at Wasco for around 377 mile total distance. Wind was about 30 mph on that day.

    Gary - NK

  10. #10
    Join Date
    Aug 2014
    Location
    Menlo Park CA
    Posts
    296

    Re: Sunday Wave + Thermals

    I've flown thermals in remarkably strong wind, above 30 mph. Strong wind means streets, especially with wave above, and convergence in our valley. A big question is whether we can assemble and launch.
    John BB

Similar Threads

  1. Wave: Sunday 1/31
    By alexneigher in forum News & Discussion
    Replies: 24
    Last Post: 02-02-2021, 09:36 PM
  2. Wave this coming Sunday?
    By lashcraft in forum News & Discussion
    Replies: 19
    Last Post: 01-20-2019, 09:54 PM
  3. Downwind from the thermals
    By Peter Kelly in forum News & Discussion
    Replies: 0
    Last Post: 05-29-2014, 09:17 AM
  4. Sunday looking like wave
    By Kempton in forum News & Discussion
    Replies: 7
    Last Post: 05-05-2014, 10:50 PM
  5. Sunday Mar 11 Wave
    By Kempton in forum News & Discussion
    Replies: 7
    Last Post: 03-14-2012, 02:37 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •