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The Dexes / Coastal Flood, High Surf & Storm Surge / 1293399

Eventdex · Coastal Flood, High Surf & Storm Surge

CITY AND BOROUGH OF JUNEAU

1293399

The record

Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.

Event typeevent_typeTsunami
NOAA NCEI event IDncei_event_id1,293,399
Episode IDepisode_id207,332
Begin UTCbegin_utc2025-08-10T14:26:00+00:00
End UTCend_utc2025-08-10T19:30:00+00:00
StatestateALASKA
County/zone typecz_typeZ
County/zone namecz_nameCITY AND BOROUGH OF JUNEAU
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceOther Federal Agency
Episode narrativeepisode_narrativeUSGS and the Alaska Earthquake Center reported that seismic activity was measured at 526am AKDT on the 10th of August in vicinity of Tracy Arm south of Juneau. The seismic measurement had a landslide signature that they recognized and further USGS ground investigations confirmed that a large mass of the mountain fell into the water at the terminus of South Sawyer Glacier, generating a massive tsunami and successive waves that scoured trees and vegetation from both sides of the fjord and Sawyer Island. As a result, a significant amount of debris remained in the fjord and nearby areas for days after the event and disrupted navigation.
Event narrativeevent_narrativeThe landslide generated tsunami scoured trees and vegetation from both sides of the Tracy Arm fjord. The National Tsunami Warning Center reported that the maximum tsunami wave height at the Juneau tide gauge was 36 cm (approximately 14 in) from the normal tide prediction, which occurred around outgoing and low tide, and continued to measure successive waves for 5 hours.
Yearyear2,025

Provenance

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CITY AND BOROUGH OF JUNEAU — Coastal Flood, High Surf & Storm Surge — TerraPulse