1. By: Ryan Longstreth

2.  Classified by height above
ground and shape
 High clouds-Bases above
20,000 feet
 Middle Clouds-occupy
heights from 6,500-20,000
feet
 Low Clouds-form below
6,500 feet

3.  Bases above 20,000
feet
 Prefix cirro is used to
name
 Cirrus
 Cirrostratus
 Cirrocumulus

4.  Thin and Wispy
 Feathery Appearance
 Have a net heating effect
 Could be sign of
approaching frontal
system
 Maybe remnants of a
thunderstorm

5.  Classified as a high cloud
 Thin, Ice crystal clouds
 Often form halos around
moon or sun
 Can be signs of a warm
front
 Can signal precipitation

6.  Classified as a high cloud
 Composed of ice crystals
 Usually in ripples or
waves as in the picture
 Very uncommon
 Usually turn into
cirrostratus clouds

7. Occupy heights
between 6,500 feet
and 20,000 feet
Prefix alto is used
in name
Altocumulus
Altostratus

8.  Made of Ice Crystals
 Can produce very
light precipitation
 Sun often shines
through them
 No halos are ever
produced

9.  Can be anywhere
from white to gray
 Usually appear as
layers
 Often precede a cold
front
 Can start the
development of a
thunderstorm

10. Form below 6,500
feet
Stratus
Stratocumulus
Nimbostratus

11.  Flat and hazy
 Can be from dark gray
to nearly white
 May produce light
drizzle or snow
 Can cause fog

12.  Soft, Gray clouds
 Usually occur in
patches
 Most of the time no
precipitation
 Usually give fair
weather without much
happening

13.  Low cloud that produces
rain
 Usually have thickness of
2000 meters
 Smooth, gray appearance
 Commonly found in the
midlatitudes

14.  Extend vertically
through more than
one height range
 Include Cumulus and
cumulonimbus

15.  Globular individual cloud
masses
 Cauliflower-like structure
 Dense
 Can extend up to 39,000 ft.
 Usually white

16.  Very tall and dense
 Often involved in
thunderstorms
 Heavy rainfall
 Tornadoes
 Result of Atmospheric
instability