Viewing Precipitation Information; Storm Cell And Lightning Information; Hurricane Information; Forecast Information - Garmin GPSMAP 7400 Series Owner's Manual

Viewing Precipitation Information

Precipitation ranging from very light rain and snow, up to strong thunderstorms, is indicated in varying shades
and colors. Precipitation is shown either independently or with other weather information.
Select Charts > Precipitation.
The time stamp in the upper-left corner of the screen indicates the elapsed time since the weather data
provider last updated the information.

Storm Cell and Lightning Information

Storm cell are represented by the
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 lines in each cone indicate where the storm will most likely be in the
near future. Each line represents 15 minutes.
Lightning strikes are represented by the
were detected within the last seven minutes. The ground-based lightning detection network detects cloud-to-
ground lightning only.
NOTE: This feature is not available on all devices and in all subscriptions.

Hurricane Information

The weather Precipitation chart can show the present position of a hurricane
depression. A red line stemming 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
weather data provider.

Forecast Information

The Forecast chart shows city forecasts, marine forecasts, warnings, hurricane warnings, METARS, county
warnings, weather fronts and pressure centers, surface pressure, and weather buoys.

Viewing a Marine Forecast or an Offshore Forecast

1 Select Charts > Forecast.
2 Pan the chart to an offshore location.
The Marine Forecast or Offshore Forecast options appear when forecast information is available.
3 Select Marine Forecast or Offshore Forecast.

Viewing Forecast Information for Another Time Period

1 Select Charts > Forecast.
2 Select an option:
• To view the weather forecast for the next 48 hours, in 12-hour increments, select
• To view the weather forecast for the previous 48 hours, in 12-hour increments, select
126
icon on the weather precipitation chart. They indicate both the present
icon. Lightning appears on the weather precipitation chart if strikes
, a tropical storm, or a tropical
multiple times.
multiple times.
SiriusXM Weather