La Crosse WS9251 Instruction Manual - page 11
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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, it will remain
permanently visualized on the LCD.
AIR PRESSURE HISTORY (ELECTRONIC BAROMETER WITH BAROMETRIC PRESSURE
TREND)
The bottom right section of the LCD shows the air pressure history bar graph.
The bar graph indicates the air pressure history trend over the last 12 hours in 5 intervals: 0h, -3h, -6h,
-9h and -12h. The “0h” represents the current full hour air pressure recording. The columns represent
the “hPa” (0, ±1, ±3, ±5) at specific time. The “0” in the middle of this scale is equal to the current
pressure and each change (±1, ±3, ±5) represents how high or low in “hPa“ the past pressure was
compared to the current pressure.
If the bars are rising it means that the weather is getting better due to the increase of air pressure. If the
bars go down, it means the air pressure has dropped and the weather is expected to get worse from the
present time “0h“.
Note:
For accurate barometric pressure trends, the weather station should operate at the same altitude for
recordings (i.e. it should not be moved from the ground to the second floor of the house). When the unit
is moved to a new location, discard readings for the next 12 hours.
DISPLAY OF INDOOR TEMPERATURE
The indoor temperature is measured automatically and displayed on the upper left corner of the LCD.
DISPLAY OF OUTDOOR TEMPERATURE
The upper right of the LCD section shows the outdoor temperature and a reception symbol.
Air pressure trend over
the last 12 hours
Outdoor temperature
in
°
C
Outdoor Reception
Symbol
Indoor
Temperature
in °C