DAVIS Weather Echo Install Manual page 9

Interpreting the Forecast Icons
The Echo and Echo Plus can display forecast when they receive data from a
weather station with a built-in barometer. You can view forecast icons when a
minimum of three hours of weather data is stored in memory. The forecast is
derived from barometric readings, three-hour barometric trends, the prevailing
wind direction, the season, the hemisphere, and whether or not it is raining. To
get a more accurate forecast, your weather station should include a rain gauge.
The forecast icons indicate the possible forecast over the next 12 hours in the
Mid-Latitudes both North and South of the Equator. Here's how to interpret
the icons.
F
ORECAST
FORECAST
FORECAST
FORECAST
Note: The forecast feature gives reasonable forecasts most, but not all of the time.
About the Display Keys and the Display Modes
I
CON
FORECAST
FORECAST
No Icon
I
NTERPRETATION
Mostly clear
Partly cloudy
Mostly cloudy
Precipitation possible
Precipitation likely
Less than three hours of recent data
is available, so no forecast can be
made. Or, no barometer reading is
being received.
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