Suunto Core User Manual page 24

to check upcoming weather conditions. The weather trend indicator is
comprised of two lines forming an arrow. Each line represents a 3-hour period.
The right line represents the last 3 hours. The left line represents the 3 hours
prior to the last 3 hours. So the line can indicate 9 different patterns in the
barometric trend.
Situation 3-6 hours ago
Dropped heavy (>2 hPa/3hours)
Remained stable
Rose heavy (>2 hPa/3hours)
TIP: If the weather trend indicator shows that the air pressure is constantly
rising, there is a higher possibility of sunny weather upcoming. Again, if the air
pressure is constantly dropping, there is a higher possibility of rainy weather.
Situation last 3 hours
Dropping heavily (>2 hPa/3hours)
Rising heavily (>2 hPa/3hours)
Dropping heavily (>2 hPa/3hours)
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