Garmin GDL 30A - Manual (Page 11)

GDL 30A Owner’s Manual 
Storm Cells
The Storm Cells feature displays storm cells and the projected path of storms in the immediate future. The direction the red cone is pointing
(from the narrow end to the wide end) indicates the projected path of the storm cell. The red bars that span the cone indicate the projected area
of the storm. Each bar represents 15 minutes.
The storm icon indicates the current
location of the storm cell. The red bars that
span the cone in this storm indicate where
the storm will be at -minute intervals in the
next hour.
XM WX Weather Features