Debris Flow — Haines Borough, Alaska
December 1, 2020 · NOAA Storm Events record
Event narrative (NOAA)
As the atmospheric river moved over the far north central inner channels of Southeast Alaska it produced significant amount of precipitation from December 1st-2nd. Heavy to moderate rainfall persisted over 48 hours with the highest amounts coming during the afternoon hours of December 1 through late morning of December 2nd. By mid morning on December 1st, near 2 of precipitation already fell. The snow levels were low at the start of the event with a few inches at sea level in Haines but as much as 12 was reported at 800 feet by the Haines40NW COOP and 20 at the 2500 foot Flower Mt SNOTEL site by the morning of December 1st. Closer to Haines, the Ripinski ridge weather station at 2560 feet reported an estimated snow accumulation of near 59 from before the warm air moved into the area. The s
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Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.