Download Storm

Warm-up
TOC
17 How Heat Travels 1/22
18 Storm Notes
1/22
19 Skills Lab Hurricane Tracking 1/22
20 Tracking a Hurricane 1/22
Key Concepts:
- What are the main kinds of
storms, and how do they form?
- What measures can you take to
ensure safety in a storm?
Can You Make a Tornado?
http://www.youtube.com/watch?v=OPIKIS_rWUQ
Fulgurites are natural hollow glass tubes formed in quartz, sand, silica, or
soil by lightning strikes. They are formed when lightning with a temperature
of at least 1,800 °C (3,270 °F) instantaneously melts silica on a conductive
surface and fuses grains together; the fulgurite tube is the cooled product.
This process occurs over a period of around one second and leaves
evidence of the lightning path and its dispersion over the surface.
http://we-are-star-stuff.tumblr.com/post/35635727164/fulgurites-are-natural-hollow-glass-tubes-formed
Fulgurites
Fossil
Lightening
Storm
 a violent
disturbance in
the atmosphere
http://missbinnyc.blogspot.com/2010/07/storm-clouds.html
http://www.wunderground.com/wximage/slywy/91?gallery=VIPPICT
Storms result from:
 Sudden change
in air
pressure
 Causing rapid
air movement
http://www.4physics.com/phy_demo/mirage/barometer.htm Click link
What observations have
you made before a
thunderstorm hits?
Thunderstorms
- small storm
- heavy precipitation
- thunder
- lightening
Thunderstorms form in a large
cumulonimbus clouds, also known as
thunderheads.
http://www.youtube.com/watch?v=kapTREk0gXg
Explanation of thunderstorm forming
How thunderstorms form – video, no sound, but contains descriptions
Song Parody on Storms
Thunderstorm Parody Song
 http://www.eo.ucar.edu/kids/dangerwx/tstorm6.htm
Click to next slide
When you see the lightening flash,
start counting the seconds.
10
1 Mississippi
seconds
2 Mississippi
equals
3 Mississippi
about a
mile away
Etc.
Until you hear the thunder
Record the number of seconds
Click to next slide
Formation of Lightening
Lightening and Thunder
 Lightening – a sudden spark or
electrical discharge
 Thunder – a result of the air being
super heated and then cooling rapidly,
resulting in an explosive sound.
Why is lightening seen before the sound
of thunder is heard?
Anatomy of Lightening
What are the components of lightening?
How is a lightening bolt formed?
http://www.youtube.com/watch?v=RLWIBrweSU8
Thunderstorm Damage
 Flooding
 Shatter tree trunks
 Start fires
 Humans/animals struck by lightening
- unconsciousness
- serious burns
- heart failure
Thunderstorm Safety
* Indoors is the safest place
- avoid touching anything that conducts
electricity telephones, electrical
appliances, & plumbing fixtures
* Usually safe in a car
- avoid touching metal in car
* Caught outside, find a low area,
and crouch down
- avoid trees and water
When caught outside with no safe place
to go, you want to crouch down and curl
up as small as you can, poised on the
balls of your feet.
- A rapidly spinning,
funnel-shaped cloud,
forming from a storm
cloud
- One of the most
destructive types of
storms
2 minute
tornado
video
footage
 http://www.youtube.com/watch?v=e6JL1W9wZHg
Fun Tornado Facts
• The most powerful Tornadoes occur in the United States.
•A typical tornado only lasts for a few minutes.
•Every tornado has its own color, sound and shape.
•You need to step on the pedal of a car pass 70 miles per hour to outrun the fastest
tornadoes.
•The chances that a tornado is a F5, the highest classification for a tornado on the
F-scale, is less than 0.1%
•Tornadoes have been reported in every state in the US and also in every season.
•A Tornado can occur at any time, but most often between 3pm and 9pm.
http://tornado-facts.com/
How Tornadoes Form
 Typically form from cumulonimbus clouds
 Usually during the spring or summer
 Often during the afternoon
Tornado Alley
http://video.nationalgeographic.com/video/environment/envir
onment-natural-disasters/tornadoes/tornadoes-101/
Tornado Damage
Strong winds
Flying debris
Low pressure inside tornado
How are Tornadoes Measured?
http://enloehs.wcpss.net/projects/Weather/fujita.gif
http://www.siamget.com/sites/siamget.com/files/imagepicker/5/fujita-scale3.jpg
Tornado Safety
http://www.crh.noaa.gov/lmk/spotter_reference/spotter_slideshow/slide9.gif
http://apps.startribune.com/blogs/user_images/safety_tips_tornado-600x450_1.jpg
Hurricanes
 Up to 600 miles across
 Winds 74 miles or higher
 Form in the Atlantic, Pacific, and
Indian Oceans
 Usually last a week or so
 Move east to west at 10 – 20 mph
http://www.weatherwizkids.com/weather-hurricane.htm
http://www.youtube.com/watch?v=tXcCL2P2BmM
http://www.youtube.com/watch?v=iOw6ONcKk4g
- The
easterly trade winds bring it towards the
Caribbean Islands and the southeastern United
States
http://www.youtube.com/watch?v=bPmDg5gEXHA
Storm surge, High Winds, & Flooding,
Washing
away
beaches
Destroying
buildings
Eroding
coastline
http://www.youtube.com/watch?v=AIl_qOkUc0o
http://www.suu.edu/faculty/colberg/Hazards/Hurricanes_Noreasters/Hurricanes_Noreasters.html
http://www.suu.edu/faculty/colberg/Hazards/Hurricanes_Noreasters/Hurricanes_Anim_1.
html
http://www.lifebridgeblogs.org/wp-content/uploads/2012/10/emergencypreparedness-checklist-300x198.jpg
http://empirestatetribune.com/wp-content/uploads/2011/08/hurrican
safety.jpg
Northern hemisphere during the winter precipitation comes down as snow.
Lake effect snows occur when a
mass of sufficiently cold air
moves over a body of warmer
water, creating an unstable
temperature profile in the
atmosphere.
As a result, clouds build over
the lake and eventually develop
into snow showers and squalls
as they move downwind. The
intensity of lake effect snow is
increased when higher
elevations downwind of the
lake force the cold, snowproducing air to rise even
further.
http://newswatch.nationalgeographic.com/files/2012/1
2/605_010402lakesnow2-590x513.gif
Heavy snow, ice storms and extreme cold can cause severe property damage and also put
human and animal lives at risk. Accurate predicting of winter storms can help people
prepare by making sure they have adequate fuel, food and other supplies on hand, but an
unexpected change in wind direction can result in major snow accumulation in a
localized region. In New York, this is often referred to as lake-effect snow because it
generally involves geographic areas near Lake Erie or Lake Ontario.
Terms to know:
Winter Storm Outlook - storm conditions are possible in the next 2-5 days.
Winter Storm Watch - storm conditions are possible within the next 36-48 hours.
Winter Weather Advisory - weather conditions may be hazardous.
Winter Storm Warning - severe winter conditions have begun or will begin within 24
hours.
http://emergencypreparedness.cce.cornell.edu/disasters/pages/winterstorms.aspx
Refer to handout
August 30th