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Forecasting Weather 

Objectives:

    1.    Compare and contrast the different technologies used to gather weather data.

    2.    Analyze weather symbols, station models, and weather maps.

    3.    Describe how weather forecasts are made.

Key Terms:

    station model

Notes: (20-5)

Weather Maps:

Weather forecasting is a process that interests and is vital to many industries throughout the world.  It requires coordination from many different agencies in order to obtain accurate information.  The consolidation of information is recorded on a chart called a station model (weather map)

Satellites - give a visual picture of the weather that is occuring in the lower troposphere
black/white - gives an idea of the cloud cover, size of frontal storms, and allows meteorologist to track destructive storms

US Visible Satellite
infrared - allows meteorologists to see the different temperatures of the air masses

US Infrared Satellite
Radiosondes - measures temperature, pressure, and humidity at different altitudes (weather balloons)
Doppler - used to locate precipitation

US Doppler Radar
Surface observations - gives information such as the surface temperatures, precipitation type and amount, and surface wind strength and direction

US Current Winds & Gusts

US Current Weather

Meteorologists at the national weather service uses information from these sources to form a station model

 

Chart containing symbols and lines that describe the current conditions

 sssmodel2.gif (4234 bytes)

(physics.uwstout.edu/wx/reference/ stationmodels/sssmodel2.gi)

Additional Weather Symbols:

      Isotherm is a line connected to all areas of equal temp.

      Isobar is a line that connects areas of equal pressure

      The closer these are to each other the greater the pressure difference and wind

 

Weather Map Symbols

Station Model

Present Weather
Air Masses
Front Symbols
Hurricane

 

(www.ischoolzone.com/review/ reference/earth20b.gif)

What are the current conditions?

20                                                          188

                      12

                19       - - -

 

 

Last modified: April 09, 2003