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W EATHER FORECASTING ICONS
For every sudden or significant change in the air pressure, the weather icons will update accordingly to
represent the change in weather.
Every time a new average pressure value has been obtained (once per minute); this value is compared
with an internal reference value. If the difference between these values is bigger than the selected
weather tendency sensitivity, the weather-icon changes, either for worse or for better. In this case, the
current pressure value becomes the new weather tendency reference.
If the icons do not change, either the air pressure has not changed or the change has been too small for
the Weather Station to register. You may adjust the "sensitivity" of the pressure change check in the
setting mode–see
WEATHER TENDENCY SENSITIVITY
in the manual settings above.
The displayed icon forecasts the weather in terms of getting better or worse
and not necessarily
sunny or rainy as each icon indicates. For example, if the current weather is cloudy and the rainy icon is
displayed, it does not mean that the product is faulty because it is not raining. It simply means that the air
pressure has dropped and the weather is expected to get worse but not necessarily rainy.
Note:
After set up, readings for weather forecasts should be disregarded for the next 48-60 hours.
This will allow sufficient time for the Weather station to collect air pressure data at a constant altitude and
therefore result in a more accurate forecast.
Common to weather forecasting, absolute accuracy cannot be guaranteed. The weather forecasting
feature is estimated to have an accuracy level of about 75% due to the varying areas the Weather Station
has been designed for use. 75% accuracy is comparable to the best meteorological forecasting rate. In
areas that experience sudden changes in weather (for example, from sunny to rain), the Weather Station
will be more accurate compared to use in areas where the weather is stable most of the time (for
example, mostly sunny).
If the Weather Station is moved to another location significantly higher or lower than its initial standing
point (for example, from the ground floor to the upper floors of a house), discard the weather forecast for
the next 48-60 hours. The Weather Station may mistake the new location as being a possible change in
air-pressure when really it is due to the slight change of altitude.
W EATHER TENDENCY INDICATOR
Working together with the weather icons is the weather tendency indicators (
arrows located on the left
and right sides
of the weather icons). When the indicator points upwards, it means that the air-pressure
is increasing and the weather is expected to improve, but when the indicator points downwards, the air-
pressure is dropping and the weather is expected to become worse.
For example, if the indicator is pointing downwards together with cloud and sun icons, then the last
noticeable change in the weather was when it was sunny (the sun icon only). Therefore, the next change
in the weather will be cloud with rain icons since the indicator is pointing downwards.
Note:
Once the weather tendency indicator has registered a change in air pressure, either the
upward or downward tendency arrow will be displayed until the tendency changes again.
