Forecast Tendency Indicators (Up, Right, Down Arrows); Manual Wwvb Time Signal Search - La Crosse Technology C83332 Instruction Manual

The Weather station samples the barometric pressure every twelve minutes.

These samples are averaged hourly and daily then stored in nonvolatile memory.

The three hour pressure icon change is based off of the last four average hourly readings.

IMPORTANT: As the Weather station builds memory, it will compare the current average
pressure to the past forty day average pressure for increased accuracy. The longer the Weather
station operates in one location, the more accurate the forecast icons will be.
The icons forecast the weather in terms of getting better or worse and not necessarily sunny or
rainy as each icon indicates. For example, if the current weather is cloudy and the rainy icon is
displayed, it does not mean that the product is faulty because it is not raining. It simply means
that the air pressure has dropped and the weather is expected to get worse, but not necessarily
rainy.
Common to weather forecasting, absolute accuracy cannot be guaranteed. The weather
forecasting feature is estimated to have an accuracy level of about 75% due to the varying areas
the Weather station has been designed for use. In areas that experience sudden changes in
weather (for example from sunny to rain), the Weather station will be more accurate compared to
use in areas where the weather is stagnant most of the time (for example mostly sunny).

Forecast Tendency Indicators (Up, Right, Down Arrows)

Working with the forecast icons, the tendency indicators let you know if the weather is improving,
steady or worsening.
Rising Pressure Weather is
Expected to Improve
 Press the TIME SET button to start or stop a manual signal search. The WWVB
Icon flashes during signal search.
For information about WWVB visit:
www.nist.gov/pml/div688/grp40/wwvb.cfm
Model: C83332/C83349
Steady Pressure Weather is
Expected to Stay the Same

Manual WWVB Time Signal Search

www.lacrossetechnology.com/support
Falling Pressure Weather is
Expected to Worsen
WWVB
ATOMIC
ICON
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