calamities, disasters
祅 centers on large-scale misfortune: calamities and disasters that strike unexpectedly.
祅 combines 示 (altar, spirit) with 夭, which likely contributes the sound and the idea of premature death or misfortune, together suggesting calamities or disasters.
The left side 示 suggests a spiritual or supernatural cause, and the right side 夭 looks like a twisted, broken figure. Picture a divine sign of disaster: a calamity striking from above.
For ヨウ, imagine a yowling wind that brings disaster: yowl -> ヨウ, and the calamity howls through the scene.