XCSkies and Skysight

Interesting T8, I have found the opposite to be true out west. HRRR, and Nam 12, see to be most accurate on the day of and 1 day before, GFS totally useless if not only for long term 3-4 days generalities.

CH ASW27

On Sunday, June 14, 2020 at 1:30:47 PM UTC-4, wrote:
Interesting T8, I have found the opposite to be true out west. HRRR, and Nam 12, see to be most accurate on the day of and 1 day before, GFS totally useless if not only for long term 3-4 days generalities.

CH ASW27

Yesterday GFS and SkySight made similar predictions, GFS more optimistic. The win for the day goes to SkySight, especially for forecasting things winding down at 5pm, right on the money (GFS predicted 6pm). Blue day, sky revealed nothing except a significant inversion when you could get high enough to see it.

T8

On Wednesday, June 17, 2020 at 10:44:53 AM UTC-6, Tango Eight wrote:

GFS more optimistic.

Using XCSkies I also find a similar relation between GFS vs NAM: GFS is always too optimistic for thermals, and NAM is better.

It seems to me that GFS on xc skies always is high on its prediction of surface and altitude winds by about 5 to 10 mph high out west. Dont fly much back east and last year at Perry and Bermuda high I think I only looked at the Nam and Hrrr.

CH