If the Volcanic Eruption Doesn’t Scare You, the Mudflow Should NYT Par :Katherine Kornei 16 janvier 2026 à 11:00 Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help planners anticipate future mudflows. © Max Whittaker for The New York TimesKnowing the year that the largest mudflow occurred could make it possible to better predict future muddy outbursts.