As intense as the winter of 2022-23 was, this has not been a great spring.
Alta had 92 inches in April, but 66 of that fell by April 5. Snowbird had 5 inches mid-mountain during a very warm May vs. 66 inches in 2011 and 43 in 2019. Consequently Snowbird closed June 18 vs. July 4 in 1995, 2011 and 2019.
The Mammoth patrol site near Main Lodge had a base depth of 281.5 inches at the end of March 2023 vs. 187 at the end of March 2017, leading to speculation about a Labor Day close or even year round skiing. But it snowed 3 inches in April 2023 vs. 68.5 inches in April 2017. So May 7 base depths were 183.5 inches in 2023 vs. 159 in 2017. More patrol site base depth comparisons: 121.5 vs. 102 on May 31, 92 vs. 69 on June 12. But the first half of June 2017 had 1.5 inches snow and no rain while in 2023 there was no snow and 1.61 inches rain.
On my recent trip there was still more snow around 9,000 feet (base of chairs 1&2) than in 2017. But the top of the mountain has less snow in some places, notably the exit area from chair 23. Today's snow report:
The last day of operation for Stump Alley (2) will be this Sunday, July 9. We are open for skiing and riding daily through July.
I found a SkiTalk post from June 18, 2017 that I knew about the August 6 closing date and there are other posts suggesting that on June 1. The closer we get with no such announcement this season, the more I think July 30 may be the end. Liz and I booked the Tuolumne River whitewater for 7/31-8/1 in 2017 knowing we would be skiing Mammoth on the same trip.
FYI 2016-17 and 2022-23 had exactly the same 87 inches of SWE at the Mammoth patrol site.