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XM WX Satellite Weather and Cellular Weather
4 GPSMAP 400/500 Series Weather Supplement
Lightning strikes are represented by lightning bolt icons
➌
. Lightning
appears on the weather Precipitation chart if strikes were detected within the
last seven minutes. The ground-based lightning detection network detects
cloud-to-ground lightning only.
Hurricane Information
The weather Precipitation chart can show the present position of a hurricane
➊
, a tropical storm, or a tropical depression. A red line stemming from a
hurricane icon indicates the projected path
➋
of the hurricane. Darkened dots
on the red line indicate the projected locations through which the hurricane
will pass, as received from the weather data provider.
➊
➋
Weather Warnings and Weather Bulletins
When a marine weather warning, weather watch, weather advisory, weather
bulletin, or other weather statement is issued, shading
➊
indicates the area
to which the information applies. To view information about the warning or
bulletin, select the shaded area. The aqua lines
➋
on the chart indicate the
boundaries of marine forecasts, coastal forecasts, and offshore forecasts.
Weather bulletins may consist of either weather watches or weather
advisories.
See the Appendix (page 19) to view a list of color shading descriptions.
➊
➋