A week or so ago I flew TPE-ANC when a typhoon was directly over Okinawa. It was night, but we could clearly see the leading edge of the cloud wall on the radar, 35 NM right of our track. We never felt any turbulence whatsoever.
In general, we plan our route to avoid them, even when palnned to fly at 350 or above. Too many times we're unable to get our requested flight level over the NOPAC routes, and the weather would only make that more likely.