5.2 Storm Warning
The “lightening” icon next to the weather icon will appear when the storm alarm has been reached to indicate
a possible storm according to the user settable air pressure values set in the base station (see storm warning
alarm setting below). For storm warning air pressure sensitivity setting on the base, please refer the main
instruction manual.
Storm warning icon
5.3 Weather tendency indicator
The weather tendency indicator arrow is located below the weather symbols. It indicates the air pressure
development and provides a forecast of the weather to be expected by the decreasing or increasing air
pressure. With the tendency arrow pointing upwards, it means that the air pressure is increasing and the
weather is expected to improve but if the tendency arrow is pointing downwards, the air pressure is
decreasing and the weather is expected to become worse.
5.4 Relative/Absolute Pressure
Relative air pressure is calculated at sea level from the local absolute air pressure and is thus valid as a
reference for weather conditions and weather developments. For example an absolute air pressure of 28.40
inHg in a city at an approximate altitude of 1500ft above sea level corresponds to a relative air pressure of
29.91 inHg at sea level. The relative unit pressure can be displayed in inHg or hPa
The recorded minimum and maximum pressure values within a period are also displayed along with the
corresponding dates and times and are automatically updated when a new minimum or maximum values are
reached.
5.5 Indoor and Outdoor Temperature/Humidity
The weather data recorded by the thermo-hygro sensor (for outdoor data transmission) and base station (for
indoor data) is displayed accordingly to the temperature, humidity section on the screen numerically and
graphically (for temperature data only)
The recorded minimum and maximum temperature and humidity values within a period are also displayed
along with the corresponding dates and times and are automatically updated when a new minimum or
maximum values are reached.
5.6 Dew point
Dew point occurs when the temperature and humidity is at such level that the humidity becomes a liquid on a
surface. The dew point data is displayed with current, minimum and maximum information.
The recorded minimum and maximum dew point values within a period are also displayed along with the
corresponding dates and times and are automatically updated when a new minimum or maximum values are
reached.
5.7 Wind chill
The wind chill data recorded by the wind sensor is displayed with current temperature, minimum and
maximum temperature recording.
The recorded minimum and maximum wind chill values within a period are also displayed along with the
corresponding dates and times and are automatically updated when a new minimum or maximum values are
reached.
5.8 Wind speed and direction
The wind data recorded by the wind sensor are received and displayed on the base station and heavy
weather program. The wind direction data is simply indicated by letters (for example N=North, NE=North East,
E, SE and etc.) or in degrees.
