12
4
Moderate breeze
20 ~ 28 km/h
Dust and loose paper raised. Small branches
begin to move.
13 ~ 17 mph
11 ~ 16 knot
5.5 ~ 7.9 m/s
5
Fresh breeze
29 ~ 38 km/h
Branches of a moderate size move.
Small trees in leaf begin to sway.
18 ~ 24 mph
17 ~ 21 knot
8.0 ~ 10.7 m/s
6
Strong breeze
39 ~ 49 km/h
Large branches in motion. Whistling heard in
overhead wires. Umbrella use becomes difficult.
Empty plastic bins tip over.
25 ~ 30 mph
22 ~ 27 knot
10.8 ~ 13.8 m/s
7
High wind
50 ~ 61 km/h
Whole trees in motion. Effort needed to walk
against the wind.
31 ~ 38 mph
28 ~ 33 knot
13.9 ~ 17.1 m/s
8
Gale
62 ~ 74 km/h
Some twigs broken from trees.
Cars veer on road. Progress on foot is seriously
impeded
39 ~ 46 mph
34 ~ 40 knot
17.2 ~ 20.7 m/s
9
Strong gale
75 ~ 88 km/h
Some branches break off trees, and some small
trees blow over. Construction /temporary signs
and barricades blow over.
47 ~ 54 mph
41 ~ 47 knot
20.8 ~ 24.4 m/s
10
Storm
89 ~ 102 km/h
Trees are broken off or uprooted, structural
damage likely.
55 ~ 63 mph
48 ~ 55 knot
24.5 ~ 28.4 m/s
11
Violent storm
103 ~ 117 km/h
Widespread vegetation and structural damage
likely.
64 ~ 73 mph
56 ~ 63 knot
28.5 ~ 32.6 m/s
12
Hurricane force
≥ 118 km/h
Severe widespread damage to vegetation and
structures. Debris and unsecured objects are
hurled about.
≥ 74 mph
≥ 64 knot
≥ 32.7m/s
WIND CHILL / HEAT INDEX / DEW POINT
TO VIEW WIND CHILL
Press the
[ INDEX ]
key repeatedly until
WIND CHILL
displays.
Note:
The wind chill factor is based on the combined effects of temperature and wind speed. The wind chill displayed
is calculated solely from temperature and humidity measured from the 5-IN-1 sensor.
TO VIEW HEAT INDEX
Press the
[ INDEX ]
key repeatedly until
HEAT INDEX
displays.
