27
Figure defines the conditions for rising and falling pressure every 3 hours.
Tendency indicators
Condition
Humidity Change per 3 Hours
Temperature Change per 3 Hours
︿
Rising
Rising > 3%
Rising > 1º C / 2 ºF
>
Steady
Change ≤ ±3%
Change ≤ ± 1 º C / 2 º F
﹀
Falling
Falling > 3%
Falling > 1º C / 2 ºF
Figure 25
9.6.4 Wireless Signal Quality Indicator
The wireless signal strength displays reception quality. If no signal is lost, the signal strength indicator will display 5
bars. If the signal is lost once, four bars will be displayed, as shown in Figure .
Five Bars
Four Bars
No signal loss
Lost signal once
Figure 26
9.7 Weather Forecasting
The five weather icons are Sunny, Partly Cloudy, Cloudy, Rainy, Stormy and Snowy.
The forecast icon is based on the rate of change of barometric pressure. Please allow at least
one month
for the weather
station to learn the barometric pressure over time.
Sunny
Partly Cloudy
Cloudy
Rainy
Snowy
Pressure increases
for a sustained period
Pressure increases
slightly, or initial
power up
Pressure decreases
slightly
Pressure decreases
for a sustained period
Pressure decreases for a
sustained period and
temperature is below
freezing
Figure 27
9.7.1 Storm Alert
If there is a rapid drop in barometric pressure, the forecast icon will flash.
9.7.2 Weather Forecasting Description and Limitations
In general, if the rate of change of pressure increases, the weather is generally improving (sunny to partly cloudy). If the
rate of change of pressure decreases, the weather is generally degrading (cloudy, rainy). If the rate of change is relatively
steady, it will read partly cloudy.
The reason the current conditions do not match the forecast icon is because the forecast is a prediction 24-48 hours in
