The weather forecast of CCTV has a $ sign on the ground. What does this mean?

Oh, this sign is yellow, which means it has dust.

Supplement: s: floating dust

$:(S- upward arrow): Blow sand.

Arrow to the right: sandstorm

S enjoys double arrows: strong sandstorm.

The freezing rain in Shangyu jf is similar to "~". Add a dot below! S stands for "sand", meaning sand and freezing rain! Don't mislead others if you don't understand!