CM9088
Wireless Desktop Weather Station
4.1 Weather Forecasting:
The four weather icons Sunny, Partly Cloudy, Cloudy and Rainy are used for
weather forecasting. There are also two weather tendency indicators to show
the air pressure tendency between the displayed weather icons. The weather
forecasting is calculated from the changing air pressure.
4.2 Weather Tendency Indicator:
The weather tendency indicator arrow is located between the weather icons to
show the air pressure tendency and to provide a forecast of the upcoming
weather. The rightward arrow means that the air pressure is
increasing
and
weather is expected to generally become better. The leftward arrow means that
the air pressure is
decreasing
and the weather is expected to become worse.
The weather forecast icon is in accordance with the calculation between the
current relative-pressure and the on-going pressure change over the last six
hours. If a change is occurring, the weather tendency indicator (animated
arrows) will be flashing for three hours indicating that a change in the weather
is underway. If weather conditions have then become stable and no new
weather change conditions are met, the arrows will be fixed.
4.3 Examples of Changing Weather Icons:
4.4 Storm Warning Indicator:
The storm threshold can be set to suit the user’s requirement for storm
forecasting, from a sensitivity of between 3-9hPa (default 2hPa). Areas that
experience frequent changes in air pressure generally require a higher setting
compared to an area where the air pressure is calmer. For example, if 4hPa is
selected there must be a fall or rise in air pressure of at least 4hPa before the
weather station will register this as a change in weather.
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