Why is weather in the upper Midwest tinged by dust from the Southwest???

Snow in Minnesota tinged yellow by dust blown up from the South!!!

some of the snow has likely been tinged by dust, blown up from the south due to high winds....

......read about more proof that weather in the upper Midwest is affected by weather in the Southwest...........

https://minnesota.cbslocal.com/2019/04/11/minnesota-weather-why-is-this-snow-yellow/