Raymarine A series, Installation And Operation Instructions Manual

Page: 387 / 464

Wave information symbols
The weather application uses a range of graphics
and symbols to represent different types of wave
information.
Symbol Description
Wave height — Waves are
shown in 16 shades of color
from:
• Reds — Highest waves
• Greens — Intermediate
waves
• Blues — Lowest waves
Wave period — wave periods
are shown using shades of
blue, the darker the shade
the shorter gap between
successive waves. The wave
period detail can be accessed
by the context menu
View
Data option.
Wave direction — direction
of waves is indicated by blue
arrows.
NOWRad precipitation color codes
NOWRad displays the type and level of precipitation:
Color code Precipitation type
Reflectivity
Intensity
Light green Rain
(15 to 19 dBz)
Medium green Rain (20 to 29 dBz)
Dark Green Rain (30 to 39 dBz)
Yellow Rain
(40 to 44 dBz)
Orange Rain (45 to 49 dBz)
Light red Rain (50 to 54 dBz)
Dark red Rain
(55+ dBz)
Light blue Snow (5 to 19 dBz)
Dark blue Snow (20+ dBz)
Light pink Mixed (5 to 19 dBz)
Dark pink Mixed (20+ dBz)
Canadian radar precipitation color codes
Canadian radar shows the intensity of precipitation
for Canada. Unlike NOWRad, Canadian radar does
not show the precipitation type.
Color code Intensity in mm per hour
Transparent (nothing shown
at very low precipitation) 0.00 to 0.20 mm/hr
Light green 0.21 to 1.00 mm/hr
Medium green 1.01 to 4.00 mm/hr
Color code Intensity in mm per hour
Dark green 4.01 to 12.00 mm/hr
Yellow 12.01 to 24.00 mm/hr
Orange 24.01 to 50.00 mm/hr
Light red 50.01 to 100 mm/hr
Dark red 100.01+ mm/hr
Reflectivity intensity to rainfall correlation
You can use the table below to correlate reflectivity
intensity in dBz to estimated rainfall in millimeters
per hour or inches per hour.
Reflectivity
Intensity
Rainfall (mm/hr) Rainfall (in/hr)
5 0.0749 0.0029
10 0.1538 0.0059
15 0.3158 0.0123
20 0.6484 0.0253
25 1.332 0.0519
30 2.734 0.1066
35 5.615 0.219
40 11.53 0.4497
45 23.68 0.9235
50 48.62 1.8963
55 99.85 3.8949
60 205.05 7.9975
65 401.07 15.6424
70 864.68 33.723
75 1775.65 69.252
80 3646.33 142.21
85 7487.83 292.03
90 15376.51 599.69
95 31575.91 1231.46
100 64841.98 2528.84
105 133154.6 5193.03
110 273436.4 10664.02
Selecting weather graphics
From the weather application:
1. Select
Menu .
2. Select Display Graphics .
The display graphics list is displayed.
3. Select each graphic you want to Show or Hide.
4. Selecting a graphic will switch between Show or
Hide.
Note: The Wind Vector graphic options are Arrow
or Barb.
Weather application (North America only)
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