Weather associated with low pressure systems
Cumuliform clouds
Rain
Good visibility
Weather associated with high pressure
Anticyclone
Stable
Stratus or stratocumulus clouds
Poor visibility
Fog in correct conditions
What is a col?
An area of constant pressure in between two highs and 2 lows
Winter - fog and light wind
Summer - showers and thunderstorms
Conditions for thunderstorm
High moisture
Instability
Trigger action
I’ve normally forms in…
Moist air
Clear ice
Water drops between 0 and -20 will freeze when they make contact with a cold surface
Rime ice
Drizzle that freezes on impact but traps air within the ice