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Magnitude 5.8 TONGA

Sunday, November 01, 2009 at 21:28:59 UTC

Preliminary Earthquake Report

Versión en Español

Magnitude	5.8
Date-Time	Sunday, November 01, 2009 at 21:28:59 (UTC) - Coordinated Universal Time Monday, November 02, 2009 at 11:28:59 AM local time at epicenter Time of Earthquake in other Time Zones
Location	15.47S 173.78W
Depth	105 kilometers
Region	TONGA
Distances	50 km (35 miles) N of Hihifo, Tonga 285 km (180 miles) SW of APIA, Samoa 645 km (400 miles) NNE of NUKU'ALOFA, Tonga 2625 km (1630 miles) NNE of Auckland, New Zealand
Location Uncertainty	Error estimate: horizontal +/- 6.5 km; depth fixed by location program
Parameters	Nst=190, Nph=190, Dmin=2203.5 km, Rmss=0.79 sec, Erho=6.5 km, Erzz=0 km, Gp=59.9 degrees
Source	USGS NEIC (WDCS-D)
Event ID	usnla4

Location Maps Did You Feel It? Report shaking and damage at your location. Historic Seismicity Theoretical P-Wave Travel Times USGS Body-Wave Moment Tensor Solution Global CMT Project Moment Tensor Solution Historic Moment Tensor Solutions Energy and Broadband Solution Phase (Arrival Time) Data Seismic Hazard Map Earthquake Density Maps Earthquakes: Frequently Asked Questions

Tsunami Information NOAA West Coast & Alaska Tsunami Warning Center NOAA Pacific Tsunami Warning Center The earthquake locations and magnitudes cited in these NOAA tsunami bulletins are very preliminary and may be superceded by USGS locations and magnitudes computed using more extensive data sets. Tsunami Information Links

NB: The official magnitude for this earthquake is indicated at the top of this page. This was the best available estimate of the earthquake's size, at the time that this page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude they are not considered the official magnitude.

The region name is an automatically generated name from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme. The boundaries of these regions are defined at one-degree intervals and therefore differ from irregular political boundaries. More->

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver