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25 years of Snowfall Graphs in Island Park/West Yellowstone (peaks)

I believe you can kick those reports out in a csv, post them into one file then chart those years on one graph if you wanted.
Indeed you can. and the compound graph is interesting to look at
But it only really works in the hosted display from the source where you can ISOLATE each year from the other in real time.

2025-05-15_12-07-09.jpg

To me thats just pretty much WORTHLESS
Just too much data
 
Or perhaps this Upper, Lower and Median Range is of value to show all of the outer limits?
2025-05-15_12-09-38.jpg
 
But all of those images are STATIC.
And in this one case, what you really Need/Want, is the DYNAMIC realtime display from the source.

That is where the real value lies in the cumulative dataset.
The ability to MOUSE-OVER the data and get real time feedback.
 
You live close.
If I were to visit the area, I would look at probability trends to see when the best opportunities for fresh snow might match a good time to visit.
Once the apparent snow events are noted, I would likely go back and match it with temperature data to see if there were extreme cold events associated with pre/post snow events and or any possible warming trends that are less desireable to ride in. For me a single year is not that informative, the 5 year is a little better. Also, if you have a rough idea of a minimum snow depth needed to enjoy off-trail riding, that can be gleaned as well. I would also target a graph that displayed snow depth vs. snow water equilavent since that is a column weight measure which can be influenced by warm/rain events saturating the snow column.
Fun to play with though.
 
Thanks for sharing data over a period of years.This shows how much fluctuation there is in caliber of riding days.
 
Thanks for sharing data over a period of years.This shows how much fluctuation there is in caliber of riding days.
DING DING DING
You nailed it right there.
The snowfall in Island Park is HIGHLY variable from one season to the next.

What I am working on now is trying to figure out a way of determining TOTAL SNOWFALL for the season.
 
OK, just for kicks and grins.
I downloaded every hourly snow depth report from October 1st through May 15th
That gave me 4,894 cells
4,894/24 = 204 days
Oct 31
Nov 30
Dec 31
Jan 31
Feb 28
Mar 31
April 30
May 15
But the actual count should be 228!
This verifies that the SNOWTEL data set is MISSING MANY MANY HOURLY REPORTS!
Which I can confirm by examining it by hand.
It FREQUENTLY skips, 3-6 hours worth of reporting on a given day.
So my final numbers are ABSOLUTELY SHORT of the truth.

I removed all negative values (Snow melted or compacted in any reporting hour)
That leaves only logged positive snowfall.
Base logged snowfall = 1,058 inches
Then I manually subtract these three "CRAZY" readings by hand
35 inches in one hour
62 inches in one hour
98 inches in one hour
TOTAL LOGGED SNOWFALL for 2024-2025 = "863 Inches"
 
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Crazy hours happen.
I’ve seen up over our truck bed in an hour in cascade years ago.
 
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