Thunderstorm
What Is A Thunderstorm?
Thunderstorms are some of the most frightening and powerful storms to
hit the world. A thunderstorm can be known as a lightning storm, a
thundershower or even an electrical storm. A thunderstorm is one of the
most powerful storms to hit and it forms when the weather is
turbulent. This is when the wind picks up greatly and rain is present,
though this doesn’t always need to be present. However, lightning and
the noise of thunder creates the thunderstorms and if there are certain
types of clouds in the sky – cumulonimbus, then it could result in
thunderstorms.
On most occasions, thunderstorms will bring on heavy rain falls and
strong winds. However, these are the most common types of weather
associated with thunderstorms but there are other types of weather that
can accompany a thunderstorm. Things such as hail, sleet and snow are
all common factors to present itself during a thunderstorm. Some
thunderstorms can rotate, if they are quite severe, then they can create
supercells which are some of the worst thunderstorms.
How Thunderstorms Are Are Created?
A thunderstorm can be created because of a sharp or rapid surge of
moist and warm air. However, as the warm and moist air moves upwards
into the air, it will cool down and condenses. When the air does this,
the air will form new cumulonimbus clouds. These cumulonimbus clouds
can in fact reach huge heights of almost 20 kilometres, sometimes much
more than that.
Once the air reaches a certain point, at the dew point, ice and water
droplets are going to form and start falling towards the earth and the
earth’s surface. It falls from a large distance; however, once the
droplets fall, they will be larger because they join up with other
droplets. Once the droplets are falling, they will create a new
downdraft of the air which will spread out vastly across the surface.
This creates winds – strong winds which coincide with thunderstorms.
- Hail
- Rain
- Strong Winds
- Snow
- Sleet
These are some of the things to spot when it comes to thunderstorms.
Where Can Thunderstorm Form?
A thunderstorm can be formed or created in almost any location around
the world. Though, the countries that are mid latitude – this is when
the air is moist and warm but comes into contact with cool air.
Thunderstorms can form anywhere if the air is warm and moist and comes
into cooler air. Though, most thunderstorms can be very severe and can
cause a lot of damage to landscapes and populated areas also.
Though, most damage that comes from a thunderstorm is due to the
larger hailstones which fall with the storm and the down burst winds.
Though, on occasion, there have been flash floods to cause a lot of
damage. Though, with some thunderstorm formations, they can be very
strong or – super cells as they can also be known as, and cause water
sprouts and even tornadoes. There are some instances which are not
going to be too severe and won’t be anything more than a small rain
shower. Some thunderstorm cells which are stronger than average storms
can be fifty times the energy of an a bomb.
The Different Types of Thunderstorms
There are however four different types of thunderstorms including;
- Supercells which are the most powerful thunderstorms available
- A single cell which are smaller and not too severe
- A multi cell cluster which is stronger than a single cell storm
- Multi cell lines which are just below a super cell
The super cells are the strongest of thunderstorms that form; and if
the thunderstorms are present in the tropics, it could contribute to
hurricanes. However, there are also dry thunderstorms which don’t cause
any rain, hail or snow fall, but they can cause wildfire outbreaks.
This happens because of the lightning that occurs; there might not be
any hail or rain but lightning still occurs and causes wildfires.
Many weather observers use things such as weather stations and
weather radar to help keep a close eye over pending weather storms
including thunder. Interesting though, it has been known for some
thunderstorms, can be created on both Venus and Jupiter and not just
here on Earth.
The Cycle of a Thunderstorm
The cycle of a thunderstorm firstly starts off with warm air. The
warm air needs to have a lower density than cooler air because the air
will start to rise actually within the cool air. When this happens,
clouds will start to form and they will become a little warmer because
inside the clouds, it will now carry moisture.
The moisture will condense and when it does, it will release energy
out; however, what this does is to cool the air of the condensed air but
the surrounding air will stay the same. If there is instability in the
atmosphere then it will create cumulonimbus clouds and that helps to
create thunder and lightning. However, for thunderstorms to form, they
need moisture, unstable air mass and a lifting force such as heat to
create a thunderstorm.
There are different stages to create a thunderstorm. There is the
developing stage, then the mature stag and finally the dissipation
stage. Though, the thunderstorms can vary from size but for the average
storm, it is around 24 kilometres. The period of time in which the
thunderstorms can develop is anything from thirty minutes.
When the thunderstorm hits the cumulus stage, or the developing
stage; a mass of moisture will be taken up towards the atmosphere. When
the moisture goes into the air, the wind will be forced upwards into
the atmosphere and will help to develop the thunderstorm. However, the
moisture will start cooling and this will form water drops because of
the cool temperatures at a high altitude.
With the mature stage, the air which is now warm will rise further up
and will continue to do so until it cannot rise any further and the air
becomes at its warmest point. When it reaches this point, the air will
be forced out a vast area and will start to create an anvil shape
creating the cumulonimbus clouds. The water drops will then start to
grow larger because they will join up with one another. They will now
be heavier and larger and will start to freeze into ice particles.
Though, as the ice falls, it will become, or rather melt, into rain.
With the final or dissipating stage, the thunderstorm is created. A
downdraft will work up and hit the ground quickly and spread out vastly
also. This can be known as a downburst and the cool air will then cut
the inflow and stop the thunderstorm also. The thunderstorm will
dissipate.
The super cell storms are the biggest and the most severe storms to
hit. This is when the super cell storms have different up and down
drafts causing the super cell. It can stretch out to a vast area and
can cause a lot of devastation and damage. When the super cells are
created, it will mean that the storms will be accompanied with severe
weather.
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