Crestline Soaring Society

I heard a distant rumble of thunder this afternoon. The NWS is expecting the high pressure center to move SW to the Four Corners area, pushing significant monsoonal moisture our way. Barstow is getting dumped on right now, in fact. What's interesting is this, from the 17:30 (PDT) Discussion:

...THERE IS AN INCREASED THREAT OF THUNDERSTORMS BEING GENERATED FROM CONVERGENCE OVER SW CALIFORNIA MOUNTAINS...SEA BREEZE COLLIDING WITH THE EAST-SOUTHEAST SYNOPTIC FLOW. THIS COMBINED WITH THE INCREASE IN PRECIPITABLE WATER...