National Tsunami Warning Center, NOAA/NWS

TSUNAMI of 11 March, 2011 (Honshu, Japan)

A great earthquake with a moment magnitude of 9.0 (USGS magnitude) occurred at 05:46:23 UTC 11 March 2011 (day 070) and was located 80 miles/129 km E of Sendai, Honshu, Japan (38.322N, 142.369E, 19.9 mi/32 km depth--USGS location).

This earthquake produced a tsunami that was recorded at tide gages monitored by the National Tsunami Warning Center (NTWC). Many observatories provide data to the centers; such as the NOAA National Ocean Service, the U. of Hawaii Sea Level Center, the Chilean Navy, and the National Tidal Facility in Australia among others. Click on the site name to see a graph of the tsunami, when available. Listed wave heights are maximum amplitude in cm (above sea level). Observed Arrival time is the actual tsunami arrival time in UTC on gages where it could be determined. The Computed Arrival time is the estimated time of wave arrival computed at the NTWC based on the earthquake origin time and location. The Sample Interval column shows the time between data samples.

For additional information about this tsunami event see the Pacific Tsunami Warning Center's homepage.

 

travel time

energy map

Travel Time Map
(click to enlarge)

Maximum Amplitude Graph
(click to enlarge)

 

Tide gage/
Measurement Location

Estimated Arrival Time
[UTC (J.Day)]

Observed Arrival time
[UTC (J.Day)]

Peak amplitude
(above sea level in cm)

Time of Peak Amplitude Measurement
[UTC (J.Day)]

Model Forecast Amplitude
(above sea level in cm)

Initial motion

Sample Interval
(min)

Data File
(Julian Day Starts
at 0000 UTC)

Adak, AK

1010 (70)

1018 (70)

110

1753 (70)

52

up

1

070, 071, 072

Alitak, AK

1317 (70)

1324 (70)

18

0156 (70)

up

1

070, 071, 072

Cordova, AK

1345 (70)

?

9

2149 (70)

12

?

1

070, 071, 072

Craig, AK

1426 (70)

1416 (70)

31

0410 (71)

 

up

15 sec

070, 071, 072

Dutch Harbor, AK

1120 (70)

1136 (70)

51

1426 (70)

54

up

1

070, 071, 072

Elfin Cove, AK

1318 (70)

1344 (70)

21

2037 (70)

30

up

1

070, 071, 072

Juneau, AK

1435 (70)

1517 (70)

21

2207 (70)

up

1

070, 071, 072

Ketchikan, AK

1433 (70)

1456 (70)

11

1633 (70)

up

1

070, 071, 072

King Cove, AK

1155 (70)

1206 (70)

54

2101 (70)

33

up

1

070, 071, 072

Kodiak, AK

1251 (70)

1259 (70)

35

0457 (71)

38

up

1

070, 071, 072

Nikolski, AK

1051 (70)

1108 (70)

84

1624 (70)

41

up

1

070, 071, 072

Nome, AK

1951 (70)

?

4

2339 (70)

up

1

070, 071, 072

Old Harbor, AK

1253 (70)

1306 (70)

38

0530 (71)

up

15 sec

070, 071, 072

Port Alexander, AK

1327 (70)

1357 (70)

42

1917 (70)

up

1

070, 071, 072

Port Moller, AK

1514 (70)

1553 (70)

15

1841 (70)

up

1

070, 071, 072

Sand Point, AK

1157 (70)

1222 (70)

61

0049 (71)

48

up

1

070, 071, 072

Saint Paul, AK

1131 (70)

1143 (70)

61

1230 (70)

41

up

1

070, 071, 072

Seldovia, AK

 

?

10

0112 (71)

11

?

1

070, 071, 072

Seward, AK

1316 (70)

1353 (70)

29

0448 (71)

22

up

1

070, 071, 072

Shemya, AK

0913 (70)

0925 (70)

157

1136 (70)

150

up

15 sec

070, 071, 072

Sitka, AK

1325 (70)

1357 (70)

40

2058 (70)

86

up

1

070, 071, 072

Skagway, AK

1517 (70)

21

2244 (70)

up

1

070, 071, 072

Valdez, AK

1335 (70)

?

8

2251 (71)

16

up

1

070, 071, 072

Yakutat, AK

1325 (70)

?

35

2027 (70)

43

up

1

070, 071, 072

Langara Point, BC

1335 (70)

1402 (70)

54

1640 (70)

43

up

1

070, 071, 072

Port Alberni, BC

1558 (70)

76

0506 (71)

up

1

070, 071, 072

Winter Harbor, BC

1419 (70)

1446 (70)

83

2003 (70)

72

up

1

070, 071, 072

Cherry Point, WA

1706 (70)

7

2101 (70)

up

1

070, 071, 072

Friday Harbor, WA

1643 (70)

10

0652 (71)

up

1

070, 071, 072

La Push, WA

1511 (70)

1520 (70)

71

2040 (70)

up

1

070, 071, 072

Neah Bay, WA

1510 (70)

1534 (70)

43

2348 (70)

40

up

1

070, 071, 072

Port Angeles, WA

1548 (70)

1607 (70)

59

1832 (70)

28

up

1

070, 071, 072

Port Townsend, WA

1645 (70)

16

2313 (70)

up

1

070, 071, 072

Seattle, WA

1644 (70)

1721 (70)

4

0505 (71)

11

up

1

070, 071, 072

Skamokawa, WA

 

?

6

 0117 (071)

 

 ?

1

070, 071, 072

Tacoma, WA

1747 (70)

6

1933 (70)

up

1

070, 071, 072

Toke Point, WA

1556 (70)

33

1834 (70)

up

1

070, 071, 072

Westport, WA

1525 (70)

1539 (70)

46

1926 (70)

54

up

1

070, 071, 072

Astoria, OR

1544 (70)

1614 (70)

18

2147 (70)

27

up

1

070, 071, 072

Charleston, OR

1515 (70)

1529 (70)

71

1807 (70)

58

up

1

070, 071, 072

Garibaldi, OR

1518 (70)

1533 (70)

35

1919 (70)

up

1

070, 071, 072

Port Orford, OR

1511 (70)

1515 (70)

202

1729 (70)

182

up

1

070, 071, 072

South Beach, OR

1526 (70)

1542 (70)

43

1837 (70)

up

1

070, 071, 072

Wauna, OR

 

?

5

0140 (71)

 

 ?

1

070, 071, 072

Alameda, CA

1636 (70)

51

1809 (70)

29

up

1

070, 071, 072

Arena Cove, CA

1526 (70)

1529 (70)

174

1750 (70)

130

up

1

070, 071, 072

Crescent City, CA

1523 (70)

1534 (70)

247

1653 (70)

250

up

1

070, 071, 072

La Jolla, CA

1641 (70)

1647 (70)

39

2006 (70)

70

up

1

070, 071, 072

Los Angeles, CA

1632 (70)

1640 (70)

49

2115 (70)

up

1

070, 071, 072

Mare Island, CA

1717 (70)

7

0838 (71)

up

070, 071, 072

Monterey, CA

1544 (70)

1548 (70)

70

1602 (70)

52

up

1

070, 071, 072

North Spit, CA

1522 (70)

1534 (70)

97

1636 (70)

133

up

1

070, 071, 072

Platform Harvest, CA

1517 (70)

15

1529 (70)

up

6

070, 071, 072

Point Reyes, CA

1539 (70)

1546 (70)

135

1807 (70)

63

up

1

070, 071, 072

Port Chicago, CA

 

 1750 (70)

4

 0907 (71)

 

 up

1

070, 071, 072

Port San Luis, CA

1603 (70)

1610 (70)

202

1936 (70)

214

up

1

070, 071, 072

Redwood City, CA

1743 (70)

12

0705 (71)

up

1

070, 071, 072

Richmond, CA

1635 (70)

35

1802 (70)

up

1

070, 071, 072

San Diego, CA

1707 (70)

63

0731 (71)

35

up

1

070, 071, 072

San Francisco, CA

1608 (70)

1612 (70)

62

1752 (70)

73

up

1

070, 071, 072

Santa Barbara, CA

1617 (70)

1627 (70)

102

2351 (70)

48

up

1

070, 071, 072

Santa Monica, CA

1631 (70)

1643 (70)

84

0819 (71)

85

up

1

070, 071, 072

Boso, Japan

0610 (70)

0604 (70)

74

0618 (70)

up

1

070, 071, 072

Hanasaki, Japan

0649 (70)

0638 (70)

282

0657 (70)

down

1

070, 071, 072

Ishigakijima, Japan

0904 (70)

0924 (70)

23

2201 (70)

up

1

070, 071, 072

Minamitorishima, Japan

0755 (70)

0747 (70)

48

0755 (70)

up

1

070, 071, 072

Naha, Japan

0855 (70)

0902 (70)

61

1212 (70)

up

1

070, 071, 072

Omaezaki, Japan

0655 (70)

0647 (70)

157

0819 (70)

up

1

070, 071, 072

Tokai, Japan

0648 (70)

0636 (70)

24

0707 (70)

up

1

070, 071, 072

Tosashimizu, Japan

0751 (70)

128

1658 (70)

up

1

070, 071, 072

Barber's Point, Oahu, HI

1309 (70)

73

1321 (70)

up

1

070, 071, 072

Hilo, Hawaii, HI

1344 (70)

1343 (70)

117

1428 (70)

up

1

070, 071, 072

Honolulu, Oahu, HI

1318 (70)

1315 (70)

71

1328 (70)

up

1

070, 071, 072

Johnston Island

1213 (70)

1211 (70)

17

2023 (70)

up

1

070, 071, 072

Kahului, Maui, HI

1333 (70)

1329 (70)

? 250 ?

1408 (70)

up

1

070, 071, 072

Kaumialapa, Lanai, HI

1323 (70)

83

1531 (70)

up

1

070, 071, 072

Kawaihae, Hawaii, HI

1340 (70)

1333 (70)

103

1420 (70)

up

1

070, 071, 072

Midway Is. USA

1035 (70)

1028 (70)

156

1047 (70)

up

1

070, 071, 072

Mokuloe, Oahu, HI

1320 (70)

25

1339 (70)

up

1

070, 071, 072

Nawiliwili, Kauai, HI

1302 (70)

1300 (70)

87

1349 (70)

up

1

070, 071, 072

Auckland, NZ

1802 (70)

?

20

0711 (71)

up

15 sec

070, 071, 072

Castlepoint, NZ

1919 (70)

40

2320 (71)

up

1

070, 071, 072

Chatham Is, NZ

1950 (70)

97

0152 (71)

up

15 sec

070, 071, 072

Gisborn, NZ

1819 (70)

1904 (70)

72

0400 (72)

up

15 sec

070, 071, 072

Jackson Bay, NZ

2008 (70)

36

0044 (71)

up

1

070, 071, 072

Kaikoura Wharf, NZ

?

40

0334 (72)

?

1

070, 071, 072

Korotiti Bay, NZ

1822 (70)

56

2150 (70)

up

15 sec

070, 071, 072

Lottin Point, NZ

1814 (70)

39

2209 (70)

up

15 sec

070, 071, 072

North Cape, NZ

1702 (70)

1748 (70)

46

0058 (71)

up

15 sec

070, 071, 072

Port Napier, NZ

1934 (70)

51

1758 (71)

up

1

070, 071, 072

Port Tauranga, NZ

1837 (70)

27

0530 (72)

up

15 sec

070, 071, 072

Puysegur, Welcome Bay, NZ

?

23

0615 (72)

?

15 sec

070, 071, 072

Queens Wharf, NZ

?

24

0953 (71)

?

15 sec

070, 071, 072

Raoul Is., Fishing Rock, NZ

1716 (70)

46

2124 (70)

up

1

070, 071, 072

Summer Head, Christchurch, NZ

?

50

0535 (72)

?

1

070, 071, 072

Waitangi, Chatham Island, NZ

2012 (70)

75

1403 (72)

up

2

070, 071, 072

Whatipu, NZ

1912 (70)

21

0804 (71)

up

15 sec

070, 071, 072

Davao, Philippines

1039 (70)

1111 (70)

40

1631 (70)

up

1

070, 071, 072

Legaspi, Philippines

1017 (70)

1019 (70)

27

1051 (70)

up

1

070, 071, 072

Subic Bay, Philippines

1110 (70)

7

0028 (71)

up

1

070, 071, 072

Huahine, French Polynesia

1716 (70)

31

1959 (70)

up

2

070, 071, 072

Papeete, French Polynesia

1706 (70)

1714 (70)

37

1807 (70)

up

1

070, 071, 072

Rangiroa Atoll, French Polynesia

1718 (70)

41

1826 (70)

up

2

070, 071, 072

Rikitea, French Polynesia

1915 (70)

1956 (70)

37

2106 (70)

up

1

070, 071, 072

Tubuai Is, French Polynesia

1800 (70)

19

1937 (70)

up

2

070, 071, 072

Betio, Tarawa, Kiribati

1205 (70)

1203 (70)

25

1217 (70)

up

1

070, 071, 072

Christmas Is, Kiribati

1447 (70)

1445 (70)

59

1542 (70)

up

1

070, 071, 072

Funafuti, Tuvalu

1329 (70)

1343 (70)

26

1409 (70)

up

6

070, 071, 072

Honiara, Solomon Islands

1255 (70)

1337 (70)

22

1609 (70)

up

1

070, 071, 072

Kawajalein, Marshall Islands

1043 (70)

1047 (70)

67

1143 (70)

up

1

070, 071, 072

Lunganville, Vanuatu

1423 (70)

83

1558 (70)

up

1

070, 071, 072

Malakal, Palau

1003 (70)

1032 (70)

14

1158 (70)

up

1

070, 071, 072

Manus, PNG

1109 (70)

1141 (70)

109

1555 (70)

up

1

070, 071, 072

Nauru, Nauru

1143 (70)

1143 (70)

26

1154 (70)

up

6

070, 071, 072

Nukualofa, Tonga

1600 (70)

1624 (70)

60

1801 (70)

up

6

070, 071, 072

Pago Pago, American Samoa

1500 (70)

1508 (70)

62

2345 (70)

up

1

070, 071, 072

Port Villa, Vanuatu

1430 (70)

1435 (70)

81

1535 (70)

up

1

070, 071, 072

Saipan, N Marianas

0840 (70)

0904 (70)

74

0915 (70)

up

1

070, 071, 072

Suva Viti Levu, Fiji

1524 (70)

1532 (70)

21

1627 (70)

up

1

070, 071, 072

Wake Island

0929 (70)

0918 (70)

49

0929 (70)

up

1

070, 071, 072

Yap, Micronesia

0936 (70)

0955 (70)

16

1013 (70)

up

1

070, 071, 072

Burnie, Tasmania

2354 (70)

12

0333 (71)

up

1

070, 071, 072

Cape Ferguson, Australia

?

11

2100 (70)

?

1

070, 071, 072

Esperance, Australia

?

30

0719 (72)

?

1

070, 071, 072

Hillary's Harbor, Australia

?

7

0535 (72)

?

1

070, 071, 072

Port Kembla, Australia

1943 (70)

37

0114 (71)

up

1

070, 071, 072

Point Murat, Australia

?

12

1840 (70)

?

1

070, 071, 072

Portland, Australia

?

13

1009 (71)

?

1

070, 071, 072

Rosslyn Bay, Australia

?

31

0008 (71)

?

1

070, 071, 072

Spring Bay, Australia

2036 (70)

38

0622 (71)

down

1

070, 071, 072

Acajutla, El Salvador

2148 (70)

2235 (70)

51

1905 (71)

up

1

070, 071, 072

Acapulco, Mexico

2002 (70)

2020 (70)

105

0545 (71)

up

1

070, 071, 072

Cabo San Lucas, Mexico

1803 (70)

1819 (70)

29

0713 (71)

up

1

070, 071, 072

Manzanillo, Mexico

1917 (70)

1932 (70)

163

0116 (71)

up

1

070, 071, 072

Quepos, Costa Rica

2232 (70)

2323 (70)

55

0359 (71)

up

1

070, 071, 072

Baltra Is, Ecuador

2308 (70)

2317 (70)

88

0007 (71)

up

1

070, 071, 072

La Libertad, Ecuador

0013 (71)

0119 (71)

176

0450 (71)

up

2

070, 071, 072

Santa Cruz, Galapagos, Ecuador

2335 (70)

208

0037 (71)

up

1

070, 071, 072

Atico, Peru

0207 (71)

0224 (71)

67

0544 (71)

up

2

070, 071, 072

Callao La Punta, Peru

0139 (71)

0206 (71)

173

0544 (71)

up

2

070, 071, 072

Antofagasta, Chile

0303 (71)

0319 (71)

95

0703 (71)

up

1

070, 071, 072

Arica, Chile

0247 (71)

0304 (71)

250

1219 (71)

up

1

070, 071, 072

Caldera, Chile

0311 (71)

0327 (71)

201

0544 (71)

up

1

070, 071, 072

Coquimbo, Chile

0321 (71)

0357 (71)

220

0711 (71)

up

1

070, 071, 072

Easter Island, Chile

2255 (70)

2316 (70)

74

0124 (71)

up

1

070, 071, 072

Iquique, Chile

0242 (71)

0259 (71)

99

0756 (71)

up

1

070, 071, 072

Juan Fernandez, Chile

0249 (71)

0305 (71)

59

0540 (71)

up

1

070, 071, 072

Puerto Chacabuco, Chile

?

26

1554 (71)

up

2

070, 071, 072

Puerto Montt, Chile

0618 (71)

?

15

1040 (71)

up

2

070, 071, 072

Puerto Williams, Chile

0423 (71)

?

17

1052 (71)

up

2

070, 071, 072

San Felix, Chile

0159 (71)

?

63

0527 (71)

?

1

070, 071, 072

San Antonio, Chile

0411 (71)

96

0820 (71)

up

1

070, 071, 072

Valparaiso, Chile

0336 (71)

0403 (71)

155

0617 (71)

up

1

070, 071, 072