A magnitude 5.1 earthquake struck the Sumba Region of Indonesia on Tuesday at 2145 GMT, according to the German Research Centre for Geosciences (GFZ).
The epicenter of the quake was initially pinpointed at 9.82 degrees south latitude and 120.51 degrees east longitude, at a depth of 10 kilometers. Indonesia’s Meteorology, Climatology, and Geophysical Agency first reported a magnitude 5.0 earthquake approximately 5 minutes prior to the GFZ’s report, at 21:50 UTC on March 10th.
Volcanodiscovery.com reported that the magnitude was recalculated from 5.0 to 5.1, and then back to 5.0, with adjustments also made to the hypocenter depth and epicenter location over a period of several hours following the initial event. The depth was initially reported as 37 kilometers, then adjusted to 10 kilometers before being revised again to 50 kilometers, and finally settling back at 10 kilometers.
The earthquake occurred 41 kilometers northeast of Waingapu, in the East Nusa Tenggara province of Indonesia. The GFZ reported the quake, although the European-Mediterranean Seismological Centre (EMSC) recorded a separate, smaller earthquake in the Sumba Region on March 7th, with a magnitude of 2.6 at a depth of 39 kilometers.
As of Wednesday, March 11th, no reports of damage or casualties have been released by Indonesian authorities. Updates from the USGS were incorporated into the reporting by Volcanodiscovery.com as of 02:45 on March 11th, with a minor correction to the epicenter location.