National & Regional Radar

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Illinois Regional Radar

National Radar

           About these maps:
           Radar is an acronym that stands for Radio Detection And Ranging.
           A weather radar consists of a parabolic dish encased in a protective dome and mounted on a tower of up to five 
           stories tall.
           Radar is a device, used by meteorologists, to predict the presence of precipitation and various weather conditions.
           This is an 
           important tool in determining the possibility of adverse weather.
           Sometimes radar will give a false reading of precipitation due to a condition called "ground clutter". Ground clutter 
           is an 
           unavoidable form of radar contamination and occurs when fixed objects, such as trees, buildings or terrain 
           produce non-meteorological echoes.
           If the radar image shows the presence of precipitation but no precipitation exists, this could be due to ground 
           Use these maps to help forecast the weather in your area and to warn of potentially dangerous situations.

Weather Fast Fact

Weather Statement:

A statement generally provides additional or followup information to an existing weather condition.