Garmin GPSMAP 696 Owner's Manual page 124

Hazard Avoidance
SURFACE PRESSURE
This feature displays pressure isobars and pressure centers. The isobars connect
points of equal pressure. Pressure readings can help determine weather and wind
conditions. High pressure areas are generally associated with fair weather. Low
pressure areas are generally associated with clouds and the chance of precipitation.
Isobars that are packed closely together show a strong pressure gradient. Strong
gradients are associated with areas of stronger winds. Pressure units can be displayed
in Millibars (mb), Inches of Mercury (in), and Hectopascals (hPa).
S XM LIGHTNING
iriUs
Lightning data shows the approximate location of cloud-to-ground lightning strikes.
A strike icon represents a strike that has occurred within a two-kilometer region
and within the last seven minutes. The exact location of the lightning strike is not
displayed.
108
Other Legend
Lightning Data
Garmin GPSMAP 695/696 Owner's Manual
Surface Pressure Data
190-00919-00 Rev. E