What does the dollar sign on the weather forecast mean? !

The meaning of the dollar sign on the weather forecast is: the vertical upward arrow in the middle of the S indicates blowing sand or dust weather, and the horizontal rightward arrow in the middle of the S indicates sandstorm weather.

Weather forecast common sense:

1. When listening to the weather forecast, we often hear time terms such as "today's day" and "today's night" and "cloudy", "overcast", "Sunny" and other weather terms.

"Today's day" refers to the 12 hours from 8:00 am to 20:00 pm; "Today's night" refers to the 12 hours from 20:00 to 8:00 the next morning. "Sunny" means cloud cover accounts for 10-30%; "cloudy" means cloud cover accounts for 40-70%; "overcast" means cloud cover accounts for 80-100%.

2. Meteorological units have two standards for precipitation: 12 hours and 24 hours. The 12-hour precipitation level standards are: "light rain" refers to precipitation of 0.6-5 mm; "moderate rain" refers to precipitation of 5.1-15 mm; "heavy rain" 15.1-30 mm; "heavy rain" 30.1-70 mm; "Heavy rainstorm" 70.1-200 mm.

The 24-hour precipitation level standard is: "light rain" precipitation refers to 1-10 mm; "moderate rain" precipitation refers to 10.1-25 mm; "heavy rain" precipitation refers to