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NTHMP Warning Coordination Subcommittee Meeting
February 1, 2011
Charles McCreeryDirector
NOAA Pacific Tsunami Warning Center
Pacific Tsunami Warning Center 2/26/11 Chile Tsunami Summary
PTWC Timeline Overview
TIME (HST) EVENT
2/26 8:34PM Mw 8.8 Earthquake Occurs in Chile
8:46PM Chile-Peru put in Warning, Ecuador in Watch
PTWC Timeline Overview
TIME (HST) EVENT
2/26 8:34PM Mw 8.8 Earthquake Occurs in Chile
8:46PM Chile-Peru put in Warning, Ecuador in Watch
8:49PM Hawaii put in Advisory* Status
*Advisory under former definition was heads-up
YEAR PLACE MAGMAXIMUM HAWAII
RUNUP
1819 N. Chile 8.5 2 m = 6.5 ft
1837 S. Chile 8.5 6 m = 19.7 ft
1868 N. Chile 8.5 4.5 m = 14.7 ft
1877 N. Chile 8.3 4.8 m = 15.7 ft
1906 C. Chile 8.2 3.5 m = 11.5 ft
1922 N. Chile 8.5 2.1 m = 6.9 ft
1960 C. Chile 9.5 10.7 m = 35.1 ft
Historical Chile Tsunami Impacts in Hawaii
GAUGE TIME (HST) Max Amplitude*
Talcahuano 8:53 PM 7.7 ft, then failed
Valparaiso 9:08 PM 4.2 ft
San Antonio 9:39 PM ETA failed
Corral 9:39 PM 2.9 ft
Juan Fernandez 9:49 PM failed
San Felix 10:15 PM 1.7 ft
Coquimbo 10:52 PM 4.3 ft
Iquique 11:06 PM 0.9 ft
Antofagasta 11:41 PM 1.6 ft
DART 32412 11:41 PM 0.8 ft
Arica 12:07 AM 3.1 ft
Initial Sea Level Readings
* Measured center-to-peak or half crest-to-trough
PLACESIFT
10:31PRIFT
11:18PATFM11:24P
SIFTw/1-DART
12:33A
Hilo 2.6m 1.6m 1.9m 4.1m
Kawaihae 0.8m 1.6m 1.3m 1.2m
Kahului 2.4m 1.0m 2.5m 2.9m
Honolulu 0.5m 1.2m 0.3m 0.9m
Haleiwa 0.6m 1.1m 0.5m 1.1m
Nawiliwili 0.6m 1.4m 1.1m 0.9m
Initial Forecast Model Guidance for Hawaii
All values are crest-to-trough or double-amplitude in meters
PTWC Timeline Overview
TIME (HST) EVENT
2/26 8:34PM Mw 8.8 Earthquake Occurs in Chile
8:46PM Chile-Peru put in Warning, Ecuador in Watch
8:49PM Hawaii put in Advisory Status
2/27 12:45AM Entire Pacific put in Warning Status
12:46AM Hawaii put in Warning Status
11:15AM
1:38PM
2:12PM
11:40PM
GAUGE TIME (HST) Max Amplitude*
DART 51404 5:31 AM 0.4 m
Hiva Oa 7:45 AM 3.6 m
Nuku Hiva 7:41 AM 1.9 m
Cabo San Lucas 8:33 AM 0.7 m
Additional Sea Level Readings
* Measured crest-to-trough or double-amplitude in meters
PLACESIFT
w/1-DART1:38A
SIFTw/1-DART
4:30A
ATFMw/1-DART
5:10P
SIFTw/2-DART
5:50A
Hilo 2.1m 2.4m 3.6m 2.5m
Kawaihae - 0.7m 2.4m 0.6m
Kahului 2.2m - 4.8m 2.2m
Honolulu 0.7m 0.4m 1.2m 0.5m
Haleiwa - 0.8m 1.0m 0.5m
Nawiliwili - 0.4m 2.2m 0.4m
Further Forecast Model Guidance for Hawaii
All values are crest-to-trough or double-amplitude in meters
PTWC Timeline Overview
TIME (HST) EVENT
2/26 8:34PM Mw 8.8 Earthquake Occurs in Chile
8:46PM Chile-Peru put in Warning, Ecuador in Watch
8:49PM Hawaii put in Advisory Status
2/27 12:45AM Entire Pacific put in Warning Status
12:46AM Hawaii put in Warning Status
11:15AM Tsunami Begins Impacting Hawaii
PLACE Range of Forecasts Observed
Hilo 1.6 - 3.6 m 1.7m
Kawaihae 0.7 - 2.4 m 1.0m
Kahului 1.0 - 4.8 m 2.0m
Honolulu 0.3 - 1.2 m 0.5m
Haleiwa 0.5 – 1.1 m 0.8m
Nawiliwili 0.4 – 1.4 m 0.7m
Tsunami Observations in Hawaii
All values are crest-to-trough or double-amplitude in meters
PTWC Timeline Overview
TIME (HST) EVENT
2/26 8:34PM Mw 8.8 Earthquake Occurs in Chile
8:46PM Chile-Peru put in Warning, Ecuador in Watch
8:49PM Hawaii put in Advisory Status
2/27 12:45AM Entire Pacific put in Warning Status
12:46AM Hawaii put in Warning Status
11:15AM Tsunami Begins Impacting Hawaii
1:38PM Hawaii Warning Cancelled
2:12PM Pacific Cancelled except Japan / Russia
PTWC Timeline Overview
TIME (HST) EVENT
2/26 8:34PM Mw 8.8 Earthquake Occurs in Chile
8:46PM Chile-Peru put in Warning, Ecuador in Watch
8:49PM Hawaii put in Advisory Status
2/27 12:45AM Entire Pacific put in Warning Status
12:46AM Hawaii put in Warning Status
11:15AM Tsunami Begins Impacting Hawaii
1:38PM Hawaii Warning Cancelled
2:12PM Pacific Cancelled except Japan / Russia
11:40PM Warning for Japan / Russia Cancelled