Download Storms forecasting - Hewlett

Rules of precipitation
• Rain will occur on the cold front.
• Rain will occur in front of the warm front
Happy high
cool and dry.
Safety
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Have a plan
Water
Emergency kit
First aid kit
Flash light
• Weather Forecasting
• Major Storms
– Thunderstorms
• Conditions
– Uplift of air
– Cumulonimbus clouds
http://www.youtube.com/watch?v=kuY4c
dwqo_Q&feature=related
• Stages
– Cumulus
» Air is lifted and cools adiabatically to the dew point and
a cumulus cloud develops.
» Heat of vaporization is released and accelerates the
uplift.
– Mature
» When the moisture that is produced reaches the surface
of the Earth
» This series of updrafts, downdrafts, and precipitation
release electrical charges which become the lightening
associated with the storm
– Final
» All of the updrafts are cut off and only downdrafts exist.
• Lightening
• Thunder
• hail
• These hailstones fell from a thunderstorm in Iowa,
damaging automobiles, structures, and crops.
You Tube
Hail storm
– Tornados
• Most violent, focused storm on Earth
• Speeds in excess of 300 km/hr (200 mi/hr)
– Hurricanes
• A hurricane is a violent storm that is produced over
the warm tropical ocean near the equator.
• Tropical Cyclone
• Fueled by warm water
• This is a satellite
photo of
hurricane John,
showing the eye
and
counterclockwise
motion.
• Cross section of
a hurricane.
Defined as a violently
rotating column of air
extending from a
thunderstorm to the ground.
• Occur in many parts of the world
• Found most frequently in the United States east of the Rocky Mountains
• Most frequent during the spring and summer months.
•Capable of tremendous destruction with wind speeds of 250 mph or more.
• Damage paths can be in excess of one mile wide and 50 miles long.
Tornado Formation
Tornado Formation cont.d...
The End