Garmin GPSMAP 740 Supplement Manual - Page 6

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Garmin GPSMAP 740 Supplement Manual
XM WX Satellite Weather and XM Satellite Radio
Storm Cell Information
Storm cell icons on the precipitation screen indicate both the present position of a storm and the
projected path of that storm in the immediate future.
Red cones appear with a storm cell icon, and the widest part of each cone points in the direction of
the projected path of the storm cell. The red bars in each cone indicate where the storm will most
likely be in the near future. Each bar represents 15 minutes.
NEXRAD
legend
NEXRAD
radar
Lightning Information
Lightning strikes are represented by lightning bolt icons. Lightning appears on the precipitation
screen if strikes were detected within the last seven minutes. The ground-based lightning detection
network detects cloud-to-ground lightning only.
Hurricane Information
The precipitation screen can show the present position of a hurricane, a tropical storm, or a tropical
depression. A red line originating from a hurricane icon indicates the projected path of the hurricane.
Darkened dots on the red line indicate the projected locations through which the hurricane will
pass, as received from the National Hurricane Center. The center provides four forecasts at 12-hour
intervals (12 hours, 24 hours, 36 hours, and 48 hours), as well as the present conditions (Now).
Projected path
700 Series XM WX Satellite Weather
Lightning
Storm cells
and XM
Satellite Radio Supplement
®
®
Hurricane