❓ why
Why do some places get frequent fog while nearby areas stay clear?
WeatherFog
Quick Answer
Fog forms when air near the ground cools to its dew point, but local geography, moisture, and wind determine where that happens. Valleys, coastlines, and river plains are especially fog-prone.
The Full Story
Fog is basically a cloud at ground level, and it appears when air becomes saturated with water vapour. Cold ocean currents, moist air, calm nights, and temperature inversions can all encourage fog formation. Nearby hills or city layouts can also block airflow and trap cool air in low areas. That is why one side of a bay or valley can be shrouded in fog while a nearby ridge is sunny.
Key Facts
1.Fog forms when air reaches 100% relative humidity near the ground
2.Temperature inversions can trap fog in valleys or basins
3.Coastal fog is common near cold currents such as the California Current
YouTube Angle
Suggested video title for this topic:
"Why can one street be foggy while the next hill is clear?"