12
spray.
7
32-38
mph
50-61
kph
28-33
knots
Moderate or Near
Gale
Large trees sway,
becoming difficult to
walk.
Larger waves
develop, white foam
from breaking waves
begins to be blown.
8
39-46
mph
62-74
kph
34-40
knots
Gale or Fresh Gale
Twigs and small
branches are broken
from trees, walking is
difficult.
Moderately large
waves with blown
foam.
9
47-54
mph
75-88
kph
41-47
knots
Strong Gale
Slight damage occurs to
buildings, shingles are
blown off of roofs.
High waves (6 meters),
rolling seas, dense
foam, Blowing spray
reduces visibility.
10
55-63
mph
89-102
kph
48-55
knots
Whole Gale or Storm
Trees are broken or
uprooted, building
damage is
considerable.
Large waves (6-9
meters), overhanging
crests, sea becomes
white with foam, heavy
rolling, reduced
visibility.
11
64-72
mph
103-117
kph
56-63
knots
Violent Storm
Extensive widespread
damage.
Large waves (9-14
meters), white foam,
visibility further
reduced.
12
73+
mph
118+
kph
64+
knots
Hurricane
Extreme destruction,
devastation.
Large waves over 14
meters, air filled with
foam, sea white with
foam and driving spray,
little visibility.
IX. RAINFALL
MEASUREMENT
If you have purchase the optional Rain Sensor, the rainfall measurement can be viewed in the WIND
SPEED LCD, otherwise, the rainfall information will not be shown.
Simply press the WIND/RAIN/SNZ button to toggle between Wind and Rain display.
In the WIND SPEED LCD you can view also three kinds of rainfall measurements:
1. Rainfall volume in the past 1 hour;
2. Rainfall volume in the past 24 hours;
3. Total rainfall volume from starting the measurement
