Skiing, snowboarding Utilization


Check the weather, snow, wind, temperature and rain in advance using the free weather forecast app “WINDY” and enjoy skiing and snowboarding.   Ski resort weather check

One thing to keep in mind when checking ski resort weather on is altitude.
By default, weather forecasts are displayed on the ground at zero altitude.
When you want to know the wind and temperature of the ski resort, adjust the altitude slider to the altitude of the ski resort.
Conversely, other layers cannot be confirmed for each altitude.


Altitude setting

By default, the wind speed on the ground is displayed, so when climbing, you can adjust the altitude slider under the layer menu to the altitude of the mountaintop to display the wind speed in the sky such as 900m, 1500m, 2000m, 3000m, 5500m. Is possible.

The altitude slider is visible when wind, temperature, and humidity layers are visible, and is not supported for other layers.

Temperature defaults to surface weather information, typically the temperature drops by 0.6°C every 100 meters.

If you adjust the altitude slider in Windy to match the altitude of the mountaintop, the temperature will be displayed at that altitude.



Snow depth and fresh snow at ski resorts

Snow depth” is the depth of snow.
Actual snow depth is affected by many factors such as topography and city.
“Snow depth” can be measured, but “new snow” = “snowfall” cannot be measured directly.

Snow depth

‘Precipitation Type‘ displays rain, frost, mixed ice, snow, wet snow, rain with snow, and ice pellet distribution.

A ‘thunderstorm‘ is defined as the number of flashes of light over an area of 1 square kilometer during the day.
The unit used to express the intensity of a thunderstorm is “l/km2”.


Difference between snowfall amount and snow depth (snow cover amount)

The difference between snowfall and snow depth (snow cover) is shown in the figure below.
“Snow depth” refers to the thickness of the snow cover at a certain point in time.
In meteorological observation, laser beams are used to measure the height from the ground to the snow surface, and the snow depth is recorded.
On the other hand, unlike rainfall, there is no way to directly measure “snowfall”, so the hourly increase in snow depth is called “snowfall” in meteorological observations.
In plain areas where there is no root snow (old snow), the amount of accumulated snow equals the amount of snowfall.

Difference between snowfall amount and snow depth (snow cover amount)


Skiing, snowboarding sensible temperature wind chill

The temperature you feel in your daily life, the so-called sensible temperature, may differ greatly from what the meteorological observatory reports, and wind speed is a major factor that affects the sensible temperature.

Simply put, it feels like the temperature drops by 1 degree per 1 meter of wind speed.

Even if the temperature is 0°C, the sensible temperature is minus 10°C under a wind of 10 meters.

Choosing what to wear in the mountains is a matter of life and death.
Many of the mountain distress accidents were due to lack of preparation, as they were unable to move due to hypothermia because they did not have warm clothes.
In the mountains, you should think about the worst possible situation, and clothing selection is fundamental.

The table below is a sensible temperature index calculated from the temperature and wind speed used in the North American continent and serves as a guideline for knowing the degree of risk of frostbite outdoors.

In the case of exposed bare skin, if the sensible temperature index falls below -28°C, frostbite may occur within 10 to 30 minutes.

When checking the temperature at the top of the mountain with Windy, consider the sensible temperature index calculated from the wind speed, prepare clothes, and try to climb safely and enjoyably.


Skiing, snowboarding  whiteout forecast and measures

One thing to watch out for when  Skiing, snowboarding in winter is the whiteout, which can make visibility extremely poor due to snowstorms. There are many victims every year by deviating from the route.

In whiteout, the boundary between the snow surface and the sky is lost, creating the illusion of floating in a white space. You will not be able to move, and the blowing snowstorm will drain your health.

If you step on a snow cornice by mistake, you may slide down, and eventually you will not be able to move, and you may end up doing nothing.

The basic countermeasure is to secure a place that can withstand the blizzard or create a snow cave and wait until the weather calms down.
Please check the visibility situation in advance with Windy’s layer visibility (visibility) before climbing.

Climbing whiteout forecast and measures



Skiing, snowboarding  UV protection

In the case of high mountains, the air layer through which ultraviolet rays pass is shorter than on the ground, so the ultraviolet rays are stronger than on the ground.

An increase in altitude of 1000m increases UV radiation by about 10%.Also, during the remaining snow season, you need to be careful of the reflection of the snow on the ground.

UV rays are invisible. In mountains with low temperatures, you may be exposed to strong UV rays without realizing it.Even if the sky is cloudy, 60 to 80% of the UV rays on a sunny day are pouring down.

You can check the UV forecast in the weather information before climbing, and you can check it with the layer UV index (ultraviolet index) in Windy.

The UV index (ultraviolet index) is an index designated by the World Health Organization to clearly indicate the degree of influence of ultraviolet rays on the human body.


Layer  Outdoor map

It can be used as a hiking map using Open Street Map.
Open Street Map also displays mountain trails and hiking routes in an easy-to-understand manner.

Layer  Outdoor map 



The weather forecast app is a free app that tells you the weather conditions at a glance on a screen that visualizes weather information around the world.

However, it is prohibited to be overconfident with alone.
Please also check the weather forecast of  others App.


Windy  Related article

Windy’s related article is below, please refer to it.

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