Manual Garmin GPSMAP 1222 (page 46 of 60) (English)

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Surface Winds

Surface wind vectors appear on the Sea Conditions chart using

wind barbs that indicate the direction from which the wind is

blowing. A wind barb is a circle with a tail. The line or flag

attached to the tail of the wind barb indicates the wind speed. A

short line represents 5 knots, a long line represents 10 knots,

and triangle represents 50 knots.

Wind Barb Wind Speed Wind Barb Wind Speed

Calm 20 knots

5 knots 50 knots

10 knots 65 knots

15 knots

Wave Height, Wave Period, and Wave Direction

Wave heights for an area appear as variations in color. Different

colors indicate different wave heights, as shown in the legend.

The wave period indicates the time (in seconds) between

successive waves. Wave period lines indicate areas that have

the same wave period.

Wave directions appear on the chart using red arrows. The

direction of each arrow pointer indicates the direction in which a

wave is moving.

Viewing Forecast Sea Conditions Information for

Another Time Period

Select Weather > Charts > Sea Conditions > MENU.

Select an option:

• To view forecasted sea conditions for the next 36 hours, in

12-hour increments, select Next Forecast multiple times.

• To view the forecasted sea conditions for the previous 36

hours, in 12-hour increments, select Previous Forecast

multiple times.

Viewing Fishing Information

The weather Fishing chart shows present water temperature,

present surface pressure conditions, and fishing forecasts.

Select Charts

> Fishing

Surface Pressure and Water Temperature Data

Surface-pressure information appears as pressure isobars and

pressure centers. Isobars connect points of equal pressure.

Pressure readings can help to 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 packed closely

together show a strong pressure gradient. Strong pressure

gradients are associated with areas of stronger winds.

Pressure units are shown in millibars (mb), inches of Mercury

(inHg), or hectopascals (hPa).

Colored shading indicates the surface temperature of the water,

as shown in the legend in the corner of the display.

Forecasting Fish Locations

You can show areas that contain optimal weather conditions for

specific species of fish.

NOTE:

This feature is not available on all devices and in all

subscriptions.

From the weather Fishing chart, select MENU

> Fish

Species

Select a species of fish.

Select

On.

Repeat steps 2 and 3 to show areas with optimal weather

conditions for additional species of fish.

Shaded areas indicate optimal fishing areas. If you have

selected more than one species of fish, you can select a

shaded area to view the fish species that are included in the

shaded area.

Changing the Sea Surface Temperature Color Range

You can change the color range dynamically to view higher

resolution sea surface temperature readings.

From the weather fishing chart, select MENU >

Sea

Temperature

Select an option:

• To allow the chartplotter to adjust the temperature range

automatically, select Auto Configure.

The chartplotter automatically finds the lower and upper

limits for the current screen, and updates the temperature-

color scale.

• To enter the lower and upper limits for the temperature

range, select

Lower Limit or Upper Limit, and enter the

lower or upper limit.

Visibility Information

Visibility is the forecast maximum horizontal distance that can be

seen at the surface, as shown in the legend on the left of the

screen. Variations in the visibility shading show the forecast

change in surface visibility.

NOTE:

This feature is not available on all devices and in all

subscriptions.

Select

Charts >

Visibility

Viewing Forecast Visibility Information for Another

Time Period

Select Weather >

Charts > Visibility > MENU

Select an option:

• To view the visibility forecast for the next 36 hours, in 12-

hour increments, select Next Forecast multiple times.

• To view the visibility forecast for the previous 36 hours, in

12-hour increments, select Previous Forecast multiple

times.

Viewing Buoy Reports

Report readings are taken from buoys and coastal observation

stations. These readings are used to determine air temperature,

dew point, water temperature, tide, wave height and period,

wind direction and speed, visibility, and barometric pressure.

From a weather chart, select .

Select

Buoy.

Viewing Local Weather Information near a Buoy

You can select an area near a buoy to view forecast information.

From a weather chart, select a location on the chart.

Select

Local Weather.

Select an option:

• To view present weather conditions from a local weather

service, select

Current Cond..

• To view a local weather forecast, select Forecast

• To view surface wind and barometric pressure information,

select

Sea Surface.

• To view wind and wave information, select Marine

Bulletin

Creating a Waypoint on a Weather Chart

From a weather chart, select a location.

Select

New Waypoint.

38 SiriusXM Weather

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Others manual(s) of Garmin GPSMAP 1222

Garmin GPSMAP 1222 Installation Guide - English - 8 pages

Garmin GPSMAP 1222 Installation Guide - German - 8 pages

Garmin GPSMAP 1222 User Manual - German - 70 pages

Garmin GPSMAP 1222 User Manual - Dutch - 66 pages

Garmin GPSMAP 1222 Installation Guide - French - 8 pages

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Garmin GPSMAP 1222 Manual

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