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4.2 Weather forecasting
Sunny Partly Cloudy Cloudy Rainy
The four weather icons Sunny, Partly Cloudy, Cloudy and Rainy represent the short range (12-24 hours)
weather forecast. The weather station uses air pressure patterns to predict the most likely upcoming weather,
which can be quite different to the weather conditions you are experiencing at the time (i.e. the forecast is not
an indicator of current conditions, just look outside for that).
4.3 Weather forecast tendency indicator
The weather tendency indicator arrows are located between the weather icons to show the air pressure
tendency and provide a forecast of the weather to be expected due to increasing or decreasing air pressure.
The rightward arrow means that the air pressure is increasing and the weather is expected to become better.
The leftward arrow means that the air pressure is decreasing and the weather is expected to become worse.
The change of the weather forecast icon is based on the relationship between current relative pressure and
the pressure change within the last twelve hours. If the weather is changing, the weather tendency indicator
(animated arrows) will be flashing. If after a three hour period the weather conditions have become stable,
the arrows will fix indicating a stable condition.
Examples of changing weather icons:
4.4 Storm warning indicator
The storm threshold
can be set to suit the user’s requirements for storm forecasting - anywhere from 3-9hPa
(default 4hPa). When there is a fall below the pressure threshold within any given 3 hour period the clouds
with rain icon as well as the tendency arrows will flash for 3 hours indicating the storm warning feature has
been activated.
Notes on pressure sensitivity settings for weather forecasting:
The pressure threshold
can be set to suit the user’s requirements for weather forecasting - anywhere from
2-4hPa (default 2hPa). Areas that experience frequent changes in air pressure require a higher setting
compared to areas where the air pressure is more stable. For example if 4hPa is selected, then 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.
5. Program Mode
The base station has five keys for easy operation: the
SET
key,
+
key,
ALARM
key,
HISTORY
key and the
MIN/MAX
key. There are five program modes available: Quick Display Mode, Setting Mode, Alarm Mode,
History Mode and Min/Max Mode. The Program Mode can be exited at any time by either pressing the
