About the observed monthly Japan snowfall tables & graphs
This data is not a scientific study
Keep this in mind when using this information and please take it for what it is - an interesting collation of existing data that we think will be of interest to SnowJapan readers.
The numbers used in our Observed Snowfall tables are the actual amounts of snowfall that have been observed by the people posting our ‘Now’ daily reports on SnowJapan. For more information on our Now reports please read this.
The numbers represent the actual snowfall generally observed at base levels at each of the regions. They do not represent the amount of snowfall higher up on the mountains - which is often more, sometimes significantly more, and also relatively much more in some places than at others. Elevation of base and the vertical between base and summit differs greatly at each resort - this data can easily be checked on the respective resort pages of SnowJapan.
And of course these numbers also say nothing about snow quality and conditions.
Larger numbers in the table do not necessarily mean that there is more snow on the upper levels at those resort areas.
Rather, what they do mean is that more snowfall has been observed at base areas. That is a very important difference and one we want everyone reading to remain aware of.
Where possible within the ‘Now’ text reports, the reporters do try to give mention to the amount of fresh snow on upper mountain areas, but any such information will mostly be coming from the resorts themselves - where available - and generally not from first-hand observations. (Sadly, we do not have people living at the top of the mountains to report in from up there every day).
The reporting on SnowJapan is done with the best of intentions to convey information honestly - without hype or bias. We are not trying to promote any one area or region of Japan - we'll leave that up to travel agencies, tour companies and the like.
For a more complete picture..... read the individual reports, not just these 'headline numbers'.
Enjoy reading and playing with this data.
Information and an explanation of what you can do:
The table and charts are by default sorted using the Last 7 Days snowfall data (largest to smallest).
By clicking on the Last 7 Days, (Current Month) or Season So far headers at the top, you can sort the table data on those criteria.
The Oct Nov Dec Jan Feb Mar Apr May columns show the snowfall data for each month along with the total cumulative snowfall for the season so far, [which is shown in square brackets].
The Season so far statistic is the amount of snowfall observed since the beginning of the current season. This data is reset for a new season in October.
On the graphs, click on any of the report names, eg Niseko Now, Yuzawa Now, etc, to toggle that piece of data on and off - by doing so you can directly compare specific sets of data. Give it a go, it's fun.
All of the data is updated dynamically as and when each Now report is posted. The latest update time for each report is clearly displayed.
Each report is updated separately, at different times and by completely different individuals. Do keep in mind that they are human, not machines or robots!
In the main table, the reports are colour-coded by Prefecture - Hokkaido reports are green, Nagano reports are red, etc.
The Naeba Now report started updating from 31st January 2015 so the 2014/2015 season data is incomplete - and there is no data for the 2013/2014 season.
The Kiroro Now report started in November 2014, and so there is no data for the 2013/2014 season.
We hope that you find this information to be interesting...