‘Another view of the San Juan snowpack’ rōbert ~ Scarce San Juan snowpack is not unprecedented, but that doesn’t make it “normal” ~ Jonathan Thompson, editor at High Country News

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“For the first time in fourteen years, San Juan County celebrated Christmas and New Year’s days without any snow on her streets, and with very little snow within the county.” That was the front-page news a century ago this month for the Silverton Standard newspaper in the high San Juan Mountains of southwestern Colorado.

This January, the news was pretty much the same: Virtually no snow in the town of Silverton, located at 9,318 feet elevation, and only a scant amount on the much higher mountains surrounding it. This in a town that gets, on average, more than 150 inches of snow per year; where, in 1993, more than seven feet of snow fell in February, alone. So it’s no surprise that photos of snowless streets and brown hillsides, of people mountain biking the high country instead of skiing, have proliferated on social media. They are accompanied by comments expressing alarm over this unprecedented dryness, a signal that the climate change apocalypse is upon us. Contrarian codgers then glance up from their easy chairs with assurances that global warming is a hoax, that this is normal, and that ’76-’77 or ’58-‘59 were far worse.

As the above newspaper clip shows, this year’s dire situation has precedents. In 1918, Silverton held a New Year’s parade on the main drag, hosted a baseball tournament and had fishing outings. In 1904 a water wagon had to spray the dry streets to keep the dust down. In 1878-79 there was so little snow in February that miners were getting buried by rock slides rather than avalanches, and the following summer 20,000 acres of high altitude forest burned between Durango and Silverton. And, yes, 1977 was grim, 1959 even more so.

But normal this is not. The combined San Juan Mountain snowpack, which fuels the flows in the Animas, San Juan, Dolores, Gunnison and Rio Grande rivers, is sitting right around 25 percent of the median level, while the entire state of Colorado is at about 54 percent. There was more snow on the ground in January 2002 — one of the worst drought years on record — than there is now.

Wanting to get a more localized look at what’s going on, I checked out the data at the SNOTEL stations on Molas and Red Mountain passes, to the south and north of Silverton, respectively. Both stations, which measure snow water equivalent, are much higher in elevation than Silverton, and typically receive considerably more snow. The Red Mountain station’s data go back to 1981; the Molas station began recording in 1987. I graphed the monthly stats for the seven winters that had the lowest numbers for Jan. 1, and also threw in 2002 since it was extraordinarily dry.

~~~  CONTINUE READING JONATHAN’S SJ HISTORY  ~~~

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