gust of wind
塕 centers on a sudden, strong gust of wind, often one that stirs up dust or dirt.
塕 combines 土 (earth, dirt) with 翁, which likely contributes the sound and may suggest a forceful or sudden movement, together evoking a gust of wind that raises dust.
The left side is earth 土, and the right side 翁 looks like an old man with a feathered hat. Imagine an old man blowing a powerful gust of wind that kicks up a cloud of dust from the ground.
For オウ, picture the gust of wind making a long, hollow 'ohhh' sound as it sweeps across the dirt: 'oh' -> オウ.