Create data points according to metrics

[alyoshenka]

Find a way to compute these metrics from weather data

Each checkbox could optionally be made its own issue

Simple Metrics

We should start here and see where it gets us, then add the more complex ones if we can

• [x] Maximum air temperature in the past 24 hours

  • really warm (significantly above freezing) causes wet slides, really really cold causes other problems

• [x] Maximum air temperature in the past 72 hours

• [x] Previous day's danger rating

  • if the previous day had a high danger rating, the current day will likely have a high(ish) danger rating
  • Ideally we wouldn't use this, because it would be cool to generate predictions based only on weather, but we should make our prediction good first

• [x] Total snowfall in the past 24 hours

  • lots of new snow is a red flag

• [x] Total snowfall in the pas 72 hours

• [x] Maximum wind speed in the past 24 hours

• [x] Threshold snowfall: was there > 7cm (convert to in) in the past 24 hours

  • using 12in for now

    More Complex Metrics

    These will be a little harder to compute and in some cases difficult to understand. I don't quite know how to compute all of them.

• [x] Water content of new snow (use SWE)

  • I think I got it?

• [x] Sum of maximum temperature of the past 3 days

  • indicative of a warm spell

• [x] Difference in minimum temperature from previous day

• [x] Weighted sum of snow for the past 4 days

  • 1.0 yesterday snowfall + 0.75 two days ago snowfall + 0.5 three days ago snowfall + 0.25 four days ago snowfall

• [ ] Density of new snow

  • Ratio of water content of new snow to new snow depth. This might just be SWE(?)

• [ ] Relative density of new snow

  • Ratio of density of new snow to density of snow from the previous storm
  • To get this we need to be able to define what a "storm" is. Our data at present makes that a bit tricky.

• [ ] Storm stake

  • Depth of new snow from the most recent storm
  • See above point: hard to compute

• [ ] Change in total snow depth relative to depth of snowfall in the last 24 hours

  • I don't see how this is particularly relevant, but one of the articles mentioned it

• [ ] Validate all data points

Related #54

[alyoshenka]

Removing in favor of #64