Types of Rain

Types of Rain

1. Precipitation
•Precipitation is any form
of water that falls to the
Earth's surface.

2. Types of Precipitation
•The type of precipitation
that falls to the ground
depends upon the
formation process and the
temperatures of the
environment between the
cloud and the surface

3. different types of
precipitation?
•Rain
•Snow
•Hail
•Sleet
•Freezing Rain

4. Rain
•
Rain develops when
growing cloud droplets
become too heavy to
remain in the cloud and
as a result, fall toward
the surface as rain

5. •Rain can
also begin as
ice crystals
that collect
each other to
form large
snowflakes
•As the falling
snow passes
through the
freezing level
into warmer
air, the
flakes melt

6. Rain from snow!

7. Snow
•Snow is formed when ice
crystals form from water
vapor that is in the clouds
directly above your heads!
•This process is called
sublimation

9. Hail
•Hail is formed
when updrafts
carry raindrops
upwards into
extremely cold
areas of the
atmosphere

10. Hail
•There the
raindrops
merge and
freeze. When
the frozen
clumps get to
heavy they fall
to earth

11. Hail
•Hail can vary
in size, from
the size of a
small stone to
that of a
baseball! So
be careful

12. Sleet
•Sleet is frozen raindrops.
Sleet begins as rain or
snow and falls through a
deep layer of cold air that
contains temperatures
below freezing that exist
near the surface.

13. Sleet
•Rain that falls
through this
extremely cold
layer has time
to freeze into
small pieces of
ice

14. Freezing Rain
•Freezing rain is falling rain
that cools below 0°C, but
does not turn to ice in the
air
•The water is “supercooled”

15. Types of rainfall
What are the
different
types of rain
and where do
they happen?

16. How it rains
1. Warm air rises
2. Air cools
3. Condensation
4. Clouds form
5. Rain

17. Types of rainfall
There are three
types of rainfall:
1.Relief or
Topographic
2. Convectional
3. Frontal

18. 1. Relief Rain
2. Forced to rise
over the
mountains
1. Warm moist
air from the sea

19. 3. Air cools as it is
forced to rise
4. Condensation
5. Clouds form
6. Rain

20. Relief rain is
quite common
in Western
Ghat where
the high land
areas are

21. 2. Convectional Rain
1. The sun heats
the ground
which heats
the air
2. Warm air rises

22. 4. Air cools as it is
forced to rise
5. Condensation
6. Clouds form
7. Rain

23. Convectional rain is
common in the
Rajasthan and Plain
areas of India in
Summer
It is also common in
Equatorial region of
the world along
equatorial low
pressure belt rgion
everyday between 2
to 4 pm

24. Convectional Rainfall

25. 3. Frontal Rain or Cyclonic
1. Mass of warm air meets
a mass of colder air
2. Lighter warm air
rises over heavier
cold air in the
temperate region
along Warm and
Cold front

26. 3. Warm air cools
4. Condensation
5. Clouds form
6. Rain

27. Frontal rain is very common all Temperate
regions of the world