NSF award 2603123 · University of Southern California

RAPID: Field Survey of the 10 August 2025, Tracy Arm, Alaska, Landslide-Generated Tsunami

Final report due

30 April 2027

in 194 days · The award ends on 31 December 2026.

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Dates this award owes

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Extension request16 Nov 2026in 29 days
award ending 2026-12-31 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice21 Dec 2026in 64 days
award ending 2026-12-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due30 Apr 2027in 194 days
award ending 2026-12-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due30 Apr 2027in 194 days
award ending 2026-12-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out30 Apr 2027in 194 days
award ending 2026-12-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 31 December 2026.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 30 April 2027.

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Award card

Award number: 2603123
Period of support: 1 Jan 2026 – 31 Dec 2026
Amount: $50,194
Awardee: University of Southern California, LOS Angeles, CA
Program: ECI-Engineering for Civil Infr
Directorate: ENG

Abstract

The objective of this NSF Rapid Response Research (RAPID) grant is to document and quantify the impacts of an extraordinary landslide-generated mega-tsunami that occurred on August 10, 2025, when an estimated ~65 million m³ of a mountainside collapsed into Tracy Arm, a fjord in southeast Alaska. Preliminary satellite and Digital Elevation Model (DEM) analyses suggest near-field runup of ~470–500 m, potentially the…

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