An NBC Palm Springs Weather Thunderstorm Forecast! Here's a look at the latest HRRR weather computer model run regarding SoCal precipitation timing and coverage. With mid-level moisture in place -- and with the heating of the day -- a few orographic lift mountain thunderstorms are possible this afternoon. Steering currents will be out of the South, so any activity which develops later today will be pushed to the North. Because of this guidance, a few spill-over showers are possible for the Coach