Moderate mag. 5.1 earthquake - South Pacific Ocean, Tonga, on Monday, 23 February 2004 at 15:16 (GMT)
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Moderate magnitude 5.1 earthquake at 10 km depth
Magnitude: 5.1
Depth: 10.0 km
Epicenter latitude / longitude: 16.565°S / 174.779°W
(South Pacific Ocean, Tonga)Nearest volcano: Tafahi (138 km / 86 mi)
Nearby towns and cities:
125 km (78 mi) SW of Hihifo (pop: 815) --> See nearby quakes!
247 km (153 mi) NNW of Neiafu (pop: 4,320) --> See nearby quakes!
364 km (226 mi) N of Pangai (pop: 1,740) --> See nearby quakes!
395 km (245 mi) SSE of Mata-Utu (Hahake, Wallis & Futuna) (pop: 1,200) --> See nearby quakes!
409 km (254 mi) SSW of Asau (Samoa) (pop: 6,640) --> See nearby quakes!
423 km (263 mi) SW of Mulifanua (Samoa) (pop: 4,510) --> See nearby quakes!
444 km (276 mi) SW of Apia (Samoa) (pop: 40,400) --> See nearby quakes!
501 km (311 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
506 km (314 mi) WSW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
511 km (317 mi) N of Nuku'alofa (pop: 22,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
| Magnitude | Depth | Location | Source |
| M 5.1 | 10 km | Tonga | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
So far, no aftershocks have been registered.
Aftershocks
More info
Recorded aftershocks, latest first (0 quakes):So far, no aftershocks have been registered.
Earlier earthquakes in the same area
Moderate mag. 5.1 earthquake - South Pacific Ocean, Tonga, on Monday, 23 February 2004 at 15:16 (GMT)Click here to search our database for earlier earthquakes in the same area since 1900!
