facts verse presents clouds you will
believe are real number one lenticular
clouds this cloud looks like a UFO and
some people actually believe that it is
this is actually a lenticular cloud it
is formed when a current of moist air is
forced upwards while it travels up a
mountain
this current causes moisture to condense
and then form a cloud these clouds will
stay in the same place for days the
reason is that the moist air continues
to supply the cloud with the moisture
that it needs to hold its shape and
position part of the reason that this
cloud is so large and perfectly shaped
is the windmills below the cloud that
continue to give an error number two and
vil clouds at first glance this cloud
looks like an explosion it is a cloud
however when these clouds are visible
you will likely hear a loud crash of
thunder because these clouds form at the
top of thunderstorms even if the storm
is several miles away
lightning can still strike these clouds
according to the National Weather
Service anvil clouds can spread hundreds
of miles downwind
from the actual thunderstorm anvil
clouds get their unusual shape when the
air rises in a thunderstorm and then
expands and spreads out when it clashes
on the bottom of the stratosphere anvil
clouds contain ice particles therefore
the air is warmer than the air in the
cloud this keeps it from spreading out
and keeps its flat top the white streaks
that fall from the edges of the clouds
are snow however by the time it hits the
ground it is already melted and turned
to rain number three Cirrus
kelvin-helmholtz clouds this cloud sits
at 16,500 feet and they resemble giant
waves in the sky if you see one of these
clouds you should take a second look at
it within a minute or two the cloud will
disperse and it will be gone this cloud
gets its wavy shape when one layer of
air slides across another layer when the
air moves at different speeds and
different directions it creates waves
these waves don't occur during certain
weather conditions
and so you can see them even on sunny
days number four fall streak whole fall
streak hole also known as hole punch
clouds look like there's a hole coming
through the sky these clouds appear when
part of the cloud freezes into ice
crystals in some cases the crystals are
so large that they fall below the clouds
creating the hole the hole in this type
of cloud can reach 50 kilometres across
in the first hour after the cloud has
begun in order for a hole to actually
form the droplets need to be below zero
degrees Celsius but it doesn't need to
be frozen
if the droplets are going to freeze the
droplets need to be negative 40 degrees
Celsius number five mammatus clouds this
is a very rare cloud that many people
will go their entire lives without
seeing people used to believe that these
clouds were a sign that a tornado was
about to form that theory has been
proven incorrect they are actually a
sign of the worst part of a thunderstorm
they develop underneath the storms anvil
cloud when the Sun reflects the
underside of the cloud it creates a
beautiful sight if the sinking air
contains large drops or snow crystals
the clouds can hang around for a long
period of time number six
polar stratospheric cloud these clouds
are also known as nacreous clouds they
are named after the nacre which means
mother of pearl due to the fact that it
is iridescent there are neon rings
around these clouds that are
breathtaking these clouds often form in
the polar stratosphere and their
altitude ranges from 15,000 to 25,000
metres while the stratosphere is very
dry during the extremely cold winters
these clouds are able to form due to the
colder weather this is another cloud
that is often mistaken for a UFO
due to its flat shape and shiny
appearance number 7 roll clouds these
are clouds you won't believe are real
these clouds look like tubes in the sky
many people believe that these clouds
are a sign that a tornado is coming but
it's not true these clouds look
they're rolling in the sky but they
aren't they're actually a wave with a
single crest that moves slightly without
changing its speed or its shape your
best chances of seeing these clouds is
if you visit Queensland Australia these
clouds are known as Morning Glory clouds
they occur when the sea breezes develop
over the Gulf of Carpentaria and Cape
York Peninsula number 8 undulate 'us
asperatus this type of cloud was
discovered in 2009 this is very
important because the last time a new
cloud formation was discovered was in
1951 it is also a very rare formation it
has bright colors that resemble the
sunset the name of the cloud means
agitated waves while these clouds look
stormy and dark they can appear and
disappear when a storm is not happening
the most common place that you will see
these clouds is in the plains states in
the u.s. they often appear in the early
hours of the day scientists still don't
know much about these clouds because
they were discovered recently however
they are still working to get more
information number 9
Cirrus kelvin-helmholtz clouds if you
look at this cloud you'll see that the
wave starts off gradual and then gets
larger and less defined this is because
layers of air form the clouds the air
can destroy them just as easily this
cloud was first described in the 19th
century by Baron Kelvin a Scottish
physicist and hermann von helmholtz a
german physicist the name of the cloud
includes the names of both men most
people have never seen this type of
cloud before weather experts say this is
because there is not enough moisture in
the air to generate the cloud and to
make the pattern possible they often
occur in the upper troposphere and
usually remain visible to the naked eye
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