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What is a Blizzard?
A Blizzard is a massive winter storm that have a combination of
blowing snow and very strong winds. When heavy snow is
falling and it is very cold it can often make a blizzard, and when
these conditions you will get a “Blizzard warning”. When a less
severe, but still dangerous, winter storm is expected a “winter
storm watch” or “winter storm warning” may be issued.
Always keep alert and stay tuned to a T.V, radio, and other
sources of weather information. There might be a winter
storm/blizzard coming or already occurring. Even though we
live here in Torquay there might be one day we an unexpected
one comes.
Three things are needed to make a blizzard:
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BLIZZARD PICTURES
1. Cold air (below freezing) is needed to make snow.
For snow to fall to the ground, the temperature must be cold both up in the clouds where
snowflakes form, and down at ground level. If the air near ground level is too warm, the snow
will melt on its way down, changing to rain or freezing rain.
2. Moisture is needed to form clouds and precipitation.
Moisture in the air is called water vapour. Air blowing across a body of water, such as a large
lake or the ocean. As wind moves air over the water, some water evaporates from the surface,
putting vapour into the air.
3. Warm, rising air is needed to form clouds and cause precipitation.
For a blizzard to form, warm air must rise over cold air. There are two ways that this may
happen. Winds pull cold air toward the equator from the poles (North and South Poles) and
bring warm air toward the poles from the equator. When warm air and cold air are brought
together, a front is formed and precipitation occurs.
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Hail is lumps of ice that
individually are called
hail stones.
Hail stones on Earth are
mostly made of water
ice and measure
between 5 millimetres
and 150 millimetres in
diameter, with the
bigger hail stones
coming from really big
thunderstorms.
Hail is possible with
most thunderstorms
and is made by
Cumulonimbi which are
a type of thunder cloud.
Yes, but it's very
rare. Hailstorms
have caused only a
handful of deaths in
the United States
over the last 100
years or so. Believe
it or not most of
those killed were
children.
Lots of hail storm
comes when there
is a tornado and
that is even worse
than a hailstorm.
Hail is normally formed in the higher places of the tropics. Hail is most likely to come in the
summer months in the afternoon and evening hours of the day.
Hail storms normally last 3-15 minutes or more if it is a bigger thunderstorm.
So far it seems like the strong winds and not the "softball sized" balls of falling ice have done
most of the damage. A tree fell on one person, another died when his mobile home rolled
over, and a baby was blown down the street. Do giant hailstones ever kill anyone?
Hail forms when tiny clumps of ice, kept aloft
by strong updraughts, get blown through
freezing thunderclouds until they are heavy
enough to fall to earth. Most large
thunderstorms create some hail, but
conditions must be met if the hailstones are to
grow large, freeze solid, and survive until they
reach the ground. Ideal conditions for hail are
tall clouds that reach high into the
atmosphere, many swirling updrafts such as in
a tornado, and cold temperatures within and
beneath the storm.
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By Ady, Ally, Angus, Blayne