• I will be able to:
• Have 17.4 Notes out.
• Explain how technology helps
forecast the weather.
• Analyze weather maps.
• Notes for Storms (page 99) & Thunderstorms (p103)
• 17.1 and 17.4 RHW Quizzes
Predicting the
Weather
Chapter 17 Section 4
Pages 583-589
Objective: I will be able to describe how
technology helps predict weather.
• Your own Weather Forecasting
– You can make your own predictions based on
your own observations.
• Changing air pressure- You can expect a change
in the weather.
– Falling pressure (Low)- might bring rainy weather
– Rising pressure (high)- clear weather
• Clouds are a sign too.
– Cumulonimbus- thunderstorms.
– Cirrus- Low pressure might be approaching
Objective: I will be able to describe how
technology helps predict weather.
• Weather Forecasting:
• Meteorologists- are scientists who study
the causes of weather and try to predict
it.
– Interpret information from various sources
•
•
•
•
•
Local weather observers.
Weather balloons.
Weather stations.
Weather Radar.
Satellites
– Computers analyze data and help prepare
Objective: I will be able to describe how
technology helps predict weather.
• Weather Technology
– Changes in technology
• Gathering Data
• Computers Analyzing
Data
– Have made:
• Short day forecasts for
up to 5 days are more
reliable.
• Long range forecasts
possible
Objective: I will be able to describe how
technology helps predict weather.
• Weather Balloons
– Carry a radiosondehigh into the
troposphere and
stratosphere.
• Measures:
– Air Pressure
– Temperature
– Humidity
Objective: I will be able to describe how
technology helps predict weather.
• Doppler Weather
Radar
– Used to find the
location, movement
and intensity of
precipitation.
– Can detect what
form of precipitation
a weather system is
carrying.
Objective: I will be able to describe how
technology helps predict weather.
• Weather Satellites
– First weather satellite
was launched in 1960.
– Cameras on satellites
in the exosphere
photograph:
•
•
•
•
Earth’s surface
Clouds
Storms
Ice and Snow Cover
Objective: I will be able to describe how
technology helps predict weather.
• Computer Forecasts
– Widely used to help
forecast weather.
– Computers process
the large amounts of
data gathered quickly
to help forecasters
make predictions.
Objective: I will be able to describe how
technology helps predict weather.
• Computer Forecasts
– 1. Gathers reported conditions from weather
stations.
– 2. Works through thousands of calculations.
• Surface conditions, temp, air pressure, wind speed
and direction and sunlight.
– 3. Revises forecasts with new data
• Creates 12hr, 24hr, 36hr forecasts
Objective: I will be able to analyze weather
maps.
• Weather Maps
– A weather map is a “snapshot” of conditions
at a particular time over a large area.
– Generated by computers and radar
information.
Objective: I will be able to analyze weather
maps.
• National Weather Service Maps
– Data from over 300 local weather stations
over the country is assembled into weather
maps at the NWS.
– Information is converted into a Station Model.
On your paper- flip # 38 & 34 so that
temp is 38 and dew pt is 34
Wind Speed
Wind Direction
(9-14mph)
(Northwest)
Temperature
Dew Point
Cloud Cover
(50%)
38
34
1018
Air Pressure
(millibars)
Objective: I will be able to analyze weather
maps.
• National Weather Service
Maps
– Curvy lines are drawn
where temperature and air
pressure are equal (iso).
• Isobars- lines of equal air
pressure. (inches of Hg or
millibars)
• Isotherms-lines of equal
temperature. °F or °C.
Objective: I will be able to analyze weather
maps.
Objective: I will be able to describe how
technology helps predict weather.
• News Paper Maps
– Simplified versions of
NWS maps for the
general public.
– Standard Symbols
• Fronts
• Areas of High and Lower
Pressure
• Precipitation
• Temperatures
Objective: I will be able to analyze weather
maps.
Objective: I will be able to describe how
technology helps predict weather.
• TV News
– Information is
received from the
National Weather
Service or
AccuWeather.
– Presented in a
format the general
public can
understand.
Objective: I will be able to describe how
technology helps predict weather.
• TV News
– Typical Format:
• Current Conditions
• Weather Across the
Local Area
– Visible Cloud Satellite
and Doppler Radar
• Weather Across the
Country
– Visible Cloud Satellite
and US Doppler Radar
• Five Day Forecast
– High/Low Temps
– Weather Conditions
Objective: I will be able to describe how
technology helps predict weather.
Objective: I will be able to describe how
technology helps predict weather.
Objective: I will be able to describe how
technology helps predict weather.
Objective: I will be able to describe how
technology helps predict weather.
Objective: I will be able to describe how
technology helps predict weather.
Objective: I will be able to describe how
technology helps predict weather.
Objective: I will be able to describe how
technology helps predict weather.
Objective: I will be able to describe how
technology helps predict weather.
Objective: I will be able to describe how
technology helps predict weather.