Weather
Meteorologist –
a person who studies
weather
What is weather?
Weather is the study of conditions
of the atmosphere are over a short
period of time
Atmosphere conditions
Elements of weather:
Temperature
Precipitation (rainfall, snowfall)
Wind speed
Humidity
Cloud cover
Understanding surface chart symbols and
the systems they show
Low pressure area
Common
weather
symbols
High pressure area
Warm front
Cold front
Occluded front
Stationary front
Trough
Weather
Fronts
Front
When two air masses meet they
don’t like to mix so they form a
border called a front.
What is a warm front?
What is a cold front?
A cold front is the transition zone
where a cold air mass is replacing a
warmer air mass.
Weather:
Under Pressure
•High and Low Pressure Systems
•A blue "H" means a center of high
pressure (usually calm, sunny weather).
•A red "L" means low pressure (which can
mean storminess). Most fronts extend
from low-pressure centers.
Pressure: High and Low Pressure
1.Air has weight (yes it is true)
**All the air molecules in the atmosphere put
pressure on our bodies.
**The higher you go the less pressure
Types of weather maps used
everyday by Meteorologists
Front Map
Wind Map
Temperature Map
Precipitation Map
Radar Map
Satellite Map
Questions
1.Why is it helpful to use different
types of weather maps?
2.Where does weather happen?
Climate
Climate
climate is the pattern of seasonal weather that
happens year after year
Climate Around the World…
polar, tropical, temperate, cool, dry
Compare these two types of climate-
make predictions and conclusions about the
water cycle in these areas.
• Tennessee
• Arizona
Information on hurricanes
A storm goes through a series of stages
before being classified as a hurricane.
Tropical
Disturbance
Thunderstorms with light
cyclonic circulation
Tropical
Depression
Wind speeds between 20
and 34 knots (23-39 mi/hr)
Tropical
Storm
Wind speeds between 35
and 64 knots (40-73 mi/hr)
Hurricane
Wind speed greater than 64
knots (74 mi/hr)
Hurricane Katrina Photographs
Things to look for:
1. Types of clouds
2. New dangerous conditions forming
besides the hurricane
3. Look at the colors, shapes and
height of the storm
Resources
http://school.discovery.com/lesso
nplans/programs/weathermaps/
www.usatoday.com
http://ww2010.atmos.uiuc.edu/(Gh
)/home.rxml