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Do you see those clouds in the sky?
They are my friends; Let's go say hi!

Hey guys! Introduce yourself

My name is Big White Cumulus
and the cloud over there is my little brother Little White Cumulus

I love watching clouds

The first type is Orographic

I got a question that everyone is wondering,
"How does precipitation take place?"

The left side of the mountain is called "Windward." On this side, air is forced

to rise over the mountain and begins to cool and expand. When it reaches

the dew point. the water vapour condenses and forms a cloud that starts to rain.

Windward

Leeward

The right side of the mountain is called "Leeward." Once over the

mountain, the air starts to descend into the valley. The descending air is

warm with "invisible water vapour." There is clear skies with no clouds or

rain on the leeward side. If the mountain range is high, a desert could be

found on this side

That was so interesting!
Tell me more!

Sure! Next, we have 2 types of Frontal

Direction of air movement

warm air

Nimbostratus

Altostratus

Cold Air
Heavier than warm air
stays at ground levelIn a frontal warm front, less stable air mass moves
into contact with a cooler more stable air mass.
The warm air then is forced off the ground by denser air,
creating a gradual slope. The air cools and water
vapour condenses, creating clouds with
steady prolong rain.
Warm Front

Direction of air movementwarm air

Cold Air

Cumulonimbus cloud

Cumulus clouds

In a cold front, a cold air mass contacts a warmer air mass.
As warm air rises, it cools and water vapour condenses to create
cumulonimbus cloud. The precipitation produced by the cold front is heavy.
Cold Front

Alright, tell us!

There's one more!

Rapidly rising air
Heavy localized rain

Cumulonimbus cloudConvection rainfall occurs in tropical regions.
The heat from the sun heats up the ground,
which also causes the air to be heated.
As the air rises, cooling takes place,
forcing the temperature to reach dew
point. Again, water vapour condenses
and a Cumulonimbus cloud forms.
These clouds can create sudden
downpour with thunder and hailstorm.