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Key
Description
1
Wind barbs
2
Pressure contours
3
GRIB information window
Wind barbs
The rotation of the wind barbs indicate the relative wind direction, with the tail showing the
direction the wind is coming from. In the graphics below the wind comes f rom from
northwest.
Wind speed is indicated by a combination of small and large barbs at the end of the wind
tail.
Zero knots / Indeterminate wind direction
Small barb = 5 knots
Large barb = 10 knots
Arrow barb = 50 knots
If a combination of 5 and 10 knot barbs are shown on a tail then these will need to be added
together to give you the total wind speed. The example below shows 3 x large barb + 1 x
small barb = 35 knots, and 60 knots indicated with 1 x arrow barb + 1 x large barb.
Wind speed: 35 knots
Wind speed: 60 knots
GRIB information window
Enter a short description of your concept here (optional).
The GRIB information window shows the date and time for the GRIB weather forecast, and
the selected forecast time in brackets. A negative value in the brackets indicates historic
weather data.
If you tap a position on the chart the information window will expand to include weather
details for the selected position.
Animating GRIB weather forecast
The GRIB data contains forecast information for a set number of days. It is possible to animate
the weather data and to show the predicted forecast for a specific time and date. The time
scales will vary depending on the file you are using.
The time shift is shown in brackets in the GRIB information window. The time will be relative
to the current time as provided by a GPS device connected to the NSS evo2.
Select time and animation speed from the menu.
SiriusXM™ weather
When connected to a Navico Weather module, you can subscribe and include Sirius™ audio
and Sirius™ Marine Weather Service on your NSS evo2 system (North America only).
Sirius™ audio and weather service covers inland US waters and coastal areas into the Atlantic
and Pacific oceans, Gulf of Mexico and the Caribbean Sea.
The audio and weather products received vary depending on your selected subscription
package. For more information refer to www.siriusxm.com/marineweather
84
Weather
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