I've created an image loop (760KB) showing how the model thinks the
wave changed between 0800 and 1600 PST for this day, with images at 1
hour intervals (the first image is displayed for a longer interval to
indicate the start of the loop) at

http://www.drjack.info/RASP/MINDEN/p500.loop.d2.gif

It shows the wave falling apart at the end of the day.

Jack

PS in my last post the first link given was actually for 1600 PST
not 1300 PST as stated, so showed the wave when it was less coherent
than earlier in the day