El Niño Outlook · Winter 2026-27
Marmot Basin El Niño rank & forecast
Marmot Basin ranks #415 of 488 SnowSure resorts — Tier E, −16% in strong El Niño winters.
Tier E — Deep timing play — aim late winter: Strong El Niño winters ran clearly below this resort’s own baseline (≤ −8%). Still skiable — schedule late season; one storm cycle can beat the climatology.
#415 of 488Tier E — Deep timing play — aim late winter
Strong-event signal: −16% vs this resort's 30-yr avg
In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Marmot Basin averaged -16% versus its own 30-year snowfall baseline. Historically this is a timing play rather than a reason to stay home: aim for late winter (February–March) in winter 2026-27. Analog winters: '97-98 -25%, '15-16 +1%, '23-24 -23%. A pattern, not a promise.
'97-98 −25%'15-16 +1%'23-24 −23%
