Ventus W838 - Weather Forecast and Wind Scale Details; Beaufort Scale Table; Weather Forecast Functionality; Weather Forecast Icons

4
Moderate
breeze
20 ~ 28 km/h
Dust and loose paper raised. Small
branches begin to move.
13 ~ 17 mph
11 ~ 16 knots
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 knots
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
difcult. Empty plastic bins tip over.
25 ~ 30 mph
22 ~ 27 knots
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 knots
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 knots
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 knots
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 knots
24.5 ~ 28.4 m/s
11 Violent storm
103 ~ 117 km/h
Widespread vegetation and structural
damage likely.
64 ~ 73 mph
56 ~ 63 knots
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 knots
≥ 32.7m/s
5.13 WEATHER FORECAST
The built-in barometer continually monitor atmosphere pressure. Based on the data collected,
it can predict the weather conditions in the forthcoming 12~24 hours within a 30~50km (19~31
miles) radius.
Sunny Partly cloudy Cloudy Rainy Rainy / Stormy Snowy
NOTE:
- The accuracy of a general pressure-based weather forecast is about 70% to 75%.
- The weather forecast is reecting the weather situation for next 12~24 hours, it may not necessarily
reect the current situation.
- The SNOWY weather forecast is not based on the atmospheric pressure, but based on the
temperature of outdoor. When the temperature is below -3°C (26°F), the SNOWY weather icon will
be displayed on the LCD.
21