H) Weather Forecast/Weather Tendency - Conrad WS-3650 Bedienungsanleitung

h) Weather forecast and weather tendency
The weather forecast of the weather station is one of the most interesting features. Although, of course, the weather
station cannot replace the professional weather forecast on the radio, television or Internet through highly-qualified
meteorologists, it is remarkable that a precision of about 70% can be achieved, only based on readings and
monitoring of the barometric pressure of the past days.
Observe the safety instructions:
• If the arrow symbol " " or " " appears next to the weather forecast symbol, these show rising or falling barometric
pressure.
• A storm warning is indicated by a rain symbol with a synchronous flashing arrow " ".
• If "Sunny" is shown during the night, this indicates a starry night.
• The display does not represent the current weather conditions but it is a forecast of the next 12 to 24 hours.
• The calculation of the weather forecast based solely on the barometric pressure results only in a maximum
accuracy of about 70%. This means that the real weather can be totally different the following day. Since the
measured barometric pressure is only valid for an area with a diameter of about 50km, the weather can also change
quickly. This is especially the case in mountainous areas and high mountain regions.
This is why you should not rely on the weather forecast of the weather station but get some information locally, for
example when you want to hike the mountains.
• In case of sudden or larger air pressure fluctuations, the display symbols are updated to indicate the weather
change. If the display symbols do not change, either the barometric pressure did not change or the change occurred
so gradually that it cannot be registered by the weather station.
• If the forecast "Sun" or "Rain" appears, the display does not change if the weather improves (display "Sun") or
deteriorates (display "Rain") as the display symbols already show the two extreme situation.
• The symbols indicate a weather change for the better or worse, which does not have to mean sun or rain, however,
as indicated by the symbols.
For example, if the current weather is cloudy and rain is displayed, this does not mean that the device malfunctions,
but rather that the air pressure has dropped and that a worse weather condition is to be expected, which does not
necessarily have to mean rain, however.
• After inserting the batteries, you should not pay attention to the measuring values and weather forecasts for the
first 12 to 24 hours, because the weather station first has to collect air pressure data in this period on a constant
height above sea level to make a more exact forecast.
• If the weather station is placed in a position which is considerably higher or lower than its original location (e.g. is
moved from the ground floor to the upper floors of a building) the station may recognise the change as a change
in the weather.
From when is the weather forecast symbol valid?
Touch the "TENDENCY" display area with the weather forecast symbol. This causes the display to show, how long
(with time and date) the weather forecast has been valid:
FAIR SINCE
22:24 -17.5.08
In this case "FAIR" = cloudy with sunny periods, "SUNNY" = sunny and "RAINY" = rain.
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