110
74 mph and above, or 119.1 km/h and
above
12
Hurricane
Table 1: Beaufort wind force scale
4.2 Weather Forecasting
The five weather icons are Sunny, Partly Cloudy, Cloudy, Rainy and Stormy.
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
Pressure increases for a
sustained period of time
Pressure increases slightly
or initial power up
Pressure
decreases slightly
Rainy
Stormy
Pressure decreases for a
sustained period of time
Pressure rapidly
decreases
4.3 Lightning Alert
The lightning icon
will appear if the Dew Point exceeds 70 F. This means there is a
chance of lightning storms forming.
4.4 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 or stormy). If the rate of change is relatively steady, it will read partly
cloudy.