XP downloads ‘world weather’, but XP11 calculates weather only for the local area. XP11 weather API only allows setting of weather to singular values, so the NOAA plugin sets weather “as it should be” immediately around the aircraft. So the result is “everywhere” has the same weather — that weather which is calculated to be correct for the …
https://forums.x-plane.org/forums/topic/72313-noaa-weather-plugin/?page=143

