590108
36
Zoom out
Zoom in
Previous page
1/46
Next page
Hurricane Information
The weather Precipitation chart can show the present position of
a hurricane
, a tropical storm, or a tropical 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.
Weather Warnings and Weather Bulletins
When a marine weather warning, weather watch, weather
advisory, weather bulletin, or other weather statement is issued,
shading indicates the area to which the information applies. The
aqua lines 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.
To view information about the warning or bulletin, select the
shaded area.
Color Marine Weather Group
Cyan Flash Flood
Blue Flood
Red Marine
Yellow Severe Storm
Red Tornado
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 Forecast Information for Another Time Period
1
Select Weather > Forecast.
2
Select an option:
To view the weather forecast for the next 48 hours, in 12-
hour increments, select Next Forecast or multiple times.
To view the weather forecast for the previous 48 hours, in
12-hour increments, select Previous Forecast
or
multiple times.
Viewing a Marine Forecast or an Offshore Forecast
1
Select Weather >
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.
Weather Fronts and Pressure Centers
Weather fronts appear as lines that indicate the leading edge of
an air mass.
Front Symbol Description
Cold front
Warm front
Stationary front
Occluded front
Trough
Pressure-center symbols often appear near weather fronts.
Pressure-
Center
Symbol
Description
Indicates a low-pressure center, which is a region of
relatively lower pressure. Moving away from a low-
pressure center results in increased pressure. Winds
flow counterclockwise around low-pressure centers in
the northern hemisphere.
Indicates a high-pressure center, which is a region of
relatively higher pressure. Moving away from a high-
pressure center results in decreased pressure. Winds
flow clockwise around high-pressure centers in the
northern hemisphere.
City Forecasts
City forecasts appear as weather symbols. The forecast is
viewed in 12-hour increments.
Symbol Weather Symbol Weather
Partly cloudy Fair (sunny, hot, clear)
Cloudy Rain (drizzle, sleet, showers)
Windy Foggy
Thunderstorms Snow (snow showers, flurries,
blizzard, blowing snow, sleet,
freezing rain, freezing drizzle)
Smoke (dusty, hazy)
Viewing Sea Conditions
The
Sea Conditions feature shows information about surface
conditions, including winds, wave height, wave period, and wave
direction.
Select
Weather > Sea Conditions.
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
1
Select Weather > Sea Conditions.
2
Select an option:
To view forecasted sea conditions for the next 36 hours, in
12-hour increments, select Next Forecast or multiple
times.
To view the forecasted sea conditions for the previous 36
hours, in 12-hour increments, select Previous Forecast
or multiple times.
30 SiriusXM Weather
36


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Garmin GPSMAP 820xs at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Garmin GPSMAP 820xs in the language / languages: English as an attachment in your email.

The manual is 4,67 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Garmin GPSMAP 820xs

Garmin GPSMAP 820xs User Manual - German - 54 pages

Garmin GPSMAP 820xs User Manual - Dutch - 50 pages

Garmin GPSMAP 820xs User Manual - French - 52 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info