Transcript blizzard jamalx - GeoJIS-9

What are they?
•
Blizzards are severe
winter storms that involve
very low temperatures(-20 to
–40°C), and strong winds.
The winds usually exceed
35mph. Blizzards are a type
of storm that occurs when
warm and cold air masses
intermix and attempt to
equalize their temperatures.
How are they formed?
• Blizzards form when warm air moving north
collides with a cold air mass that has been
pushed down from the Arctic.
•
During a blizzard it doesn’t actually have to
snow. The winds will stir up the snow on the
ground and we’ll end up with a blizzard.
Where do they happen?
• Blizzard's mostly happen in the dangerous
cold mass that produce blizzards They usually
come from the North Pole ,South Pole in the
coast of the USA, UK, Columbia, Canada, and
rocky mountains although Blizzards are
actually not as common in the USA as in some
parts of the world but, they say the blizzards
in the USA are more dangerous because the
people are less prepared.
Risks
• Blizzards have a high
potential for destruction.
Accumulation of snow on
tree branches cause many
trees to break and fall on
cars, houses, and block
streets. Highways and airways
experience major delays
because of the large amounts
of snow and lack of visibility.
People are forced to stay
home from school and work,
also their daily activities are
limited.
A few of the deadliest blizzards
- 1888 March 11-14 in Eastern U.S-400 people
died
- 1940 November 11-12 Midwest U.S.-144 people
died
- 1956 Feb. 1-29 West Europe-1,000 people died
- 1958 Feb. 15-16 North Eastern U.S-171 people
died
- 1967 Dec. 12-20 South West U.S-51 people died
- 1988 in New York- 400 people died
- 1993 March 13-14 Eastern U.S-200 people died
- 1996 Jan. 7-8 Northeastern U.S- 100 people
died
- 1996 Aug. 22 Himalayas India -239 people died
New York, USA (1947, December 26)
•
The storm began at 5:25 a.m. and became the
worst blizzard in New York City since 1888.
Beginning the day after Christmas, 25.8 inches
(nearly 100 million tons) of snow were dropped
on the streets. Thousands of commuters were
trapped in the city, stranded on trains and
subways. 30,000 men worked for an entire week
at a cost of $6 million to remove the snow. 77
people died in eight north-eastern states.
How can we protect ourselves? (Steps)
• If you are in a car:
• Do not leave your car, or you will be easily
lost.
• Bring a battery-powered radio so you can hear
the meteorologist say when the storm has
passed
• Make sure to start the engine every 10
minutes or so to keep the engine warm, so it
doesn't stall.
How can we protect ourselves? (Steps)
• If you are out side:
• Seek shelter as soon as possible
• If there is no car or building nearby, you should
dig a trench on soft soil hide inside the trench,
even cover it up if you need to, and if you don't
hear anything, carefully get out.
• Beware of the snow as you could easily sink into
them
• Go inside the building or car and stay there
How can we protect ourselves? (Steps)
• If you are at shelter:
• Stay there!
Go inside a room with no windows, since the
power of the snow could damage your glass
• Just stay inside a room with no windows, and
listen to the radio for updates.
• Do NOT go outside unless it is an emergency