19 Aug 00:27 UTC: First to report: GFZ after 7 minutes.

Aug 19 00:28: Magnitude recalculated from 7.6 to 7.8.

Hypocenter depth recalculated from 587.0 to 577.0 km.

Hypocenter depth recalculated from 577.0 to 574.0 km.

Aug 19 00:30: Magnitude recalculated from 7.8 to 7.9.

Hypocenter depth recalculated from 574.0 to 578.0 km.

Aug 19 00:31: Magnitude recalculated from 7.9 to 8.0.

Hypocenter depth recalculated from 578.0 to 576.0 km.

Aug 19 00:47: Magnitude recalculated from 8.0 to 8.1.

Hypocenter depth recalculated from 576.0 to 566.0 km.

Date & time: Sunday, 19 August 2018 00:19 UTCDepth: 566.0 kmEpicenter latitude / longitude: 18.03°S / 178.28°WNearest volcano: Taveuni (244 km / 152 mi)Primary data source: GFZ Estimated released energy: 8.9 x 10joules (24757 gigawatt hours, equivalent to 2.1 x 10tons of TNT or 1331.3 atomic bombs!) [ learn more

If you felt this quake (or if you were near the epicenter),Other users would love to hear about it!Alsoalthough you were in the area, please report it ! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.

User reports estimate the perceived ground shaking intensity according to the MMI (modified Mercalli) scale

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Vava u Tonga / Moderate shaking (MMI V) : Because we were on a dock it was confusing whether it was the ocean or an earthquake. But it lasted enough to feel it WAS an earthquake

Sigatoka / Moderate shaking (MMI V)

Avonsleigh Victoria Australia (4142.3 km SW of epicenter) [Map] / Very weak shaking (MMI II) : Felt an initial rumble through the floor, wave like, followed shortly after by a weaker audible rumble. I was in bed at the time. / Very weak shaking (MMI II)

3522.8 km SW of epicenter [Map] / not felt (reported through our app / not felt

Vlaardingen / not felt

Tokoriki / not felt

457.9 km SE of epicenter [Map] / Light shaking (MMI IV) / Light shaking (MMI IV)

SUVA / not felt

2954 km SSW of epicenter [Map] / not felt Christurch.no felt (reported through (reported through our app / not felt

Nadi Fiji / Light shaking (MMI IV)

449.7 km W of epicenter [Map] / Strong shaking (MMI VI) / Strong shaking (MMI VI)

Unud / Light shaking (MMI IV)

NAVUA (377.3 km W of epicenter) [Map] / Light shaking (MMI IV) : Light shake / Light shaking (MMI IV)

Viti Levu, Fiji / Weak shaking (MMI III) : I was sitting at my outside table on my deck

Suva / Very weak shaking (MMI II)

Fifi / Very strong shaking (MMI VII)

port vila / Very weak shaking (MMI II) : Outdoor signs fell over

Suva city, Domain area / not felt

Tonga / Very weak shaking (MMI II) : No issue

Ph (7089.3 km WNW of epicenter) [Map] / not felt / not felt

Denarau island / Light shaking (MMI IV) : We are located on the second floor. We were sitting on the couch when we suddenly started to rock

461.7 km W of epicenter [Map] / Very weak shaking (MMI II) / Very weak shaking (MMI II)

Labasa / Light shaking (MMI IV) : Was lying on my back...Felt someone was dragging me...

Denarau Island Golf Club Fiji / Weak shaking (MMI III)

Apia Samoa / Very weak shaking (MMI II) : Felt a small shake that went lasted about 10 seconds ..im in Samoa

FNPF Place, Suva, Fiji. (348.7 km W of epicenter) [Map] / Light shaking (MMI IV) : Felt the whole building shake. Was like the building is flexible. / Light shaking (MMI IV)

Lautoka Fiji / Weak shaking (MMI III) : I was in the livingroom n felt that the couch i was on was on an elevator. Felt like a tremor.

Nadi / Moderate shaking (MMI V) : Big shake

Fiji pacific harbour / Light shaking (MMI IV)

Vava'u Tonga (456.5 km E of epicenter) [Map] / Moderate shaking (MMI V) : Very definite rumbling and swirling movement. Felt inside and outside with TV and ornaments rocking. Went on for some time. Was building to strong then weaker then again felt it not quite as strong / Moderate shaking (MMI V)

Suva / Light shaking (MMI IV)

Suva (344.4 km W of epicenter) [Map] / Weak shaking (MMI III) / Weak shaking (MMI III)

Ha'apai Tonga (460.7 km ESE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app / Moderate shaking (MMI V)

Chicago Illinois United States / Light shaking (MMI IV) : Not sure this is possible but had at the same time had some shaking in the Chicago area.

Vinod street Suva (344.3 km W of epicenter) [Map] / Weak shaking (MMI III) : The ground was shaking in waves as if sitting on a boat / Weak shaking (MMI III)

nadi / Light shaking (MMI IV)

Bali, Ubud / Weak shaking (MMI III)

339 km W of epicenter [Map] / Light shaking (MMI IV) : It lasted a few seconds which was quite long / Light shaking (MMI IV)

Naviti resort, fiji / Weak shaking (MMI III)

Nausori,fiji / Moderate shaking (MMI V)

sheraton Denarau (454.2 km W of epicenter) [Map] / Light shaking (MMI IV) : i felt it. bed moving / Light shaking (MMI IV)

Port demerau / Weak shaking (MMI III)

Los Angeles / Very weak shaking (MMI II) : I felt a little bump while I was sitting down.

Hilton Fiji beach island and resort / Moderate shaking (MMI V) : Felt like I was on a boat while relaxing on the day bed

Nadi / Weak shaking (MMI III)

Denarau Island Nadi / Light shaking (MMI IV) : Light shaking for 1-2 minutes

fiji / Moderate shaking (MMI V) : visiting from california. saw hanging ceiling lights sway for about 5 minutes.

Fiji, main island, pacific harbour / Weak shaking (MMI III) : Felt the ground moving from side to side for like for 15 seconds

Pacific Har (386.7 km W of epicenter) [Map] / Moderate shaking (MMI V) / Moderate shaking (MMI V)

Denarau Island / Very weak shaking (MMI II)

Koronivia, Nausori (337.5 km W of epicenter) [Map] / Severe shaking (MMI VIII) / Severe shaking (MMI VIII)

337.9 km W of epicenter [Map] / Light shaking (MMI IV) / Light shaking (MMI IV)

Nadi / Weak shaking (MMI III)

Denarau Island Nadi Fiji / Moderate shaking (MMI V) : Water in swimming pool moved from side to side in a hurry.

Valelevu / not felt

454.5 km ESE of epicenter [Map] / Moderate shaking (MMI V) / Moderate shaking (MMI V)

WAIYEVO waitavala taveuni / Severe shaking (MMI VIII) : Taveuni

nasinu, fiji / Light shaking (MMI IV)

Denarau Nadi / Moderate shaking (MMI V)

Denerau island / Light shaking (MMI IV) : Definite swaying for a prolonged time

Nadi / Very weak shaking (MMI II)

460.3 km W of epicenter [Map] / Light shaking (MMI IV) / Light shaking (MMI IV)

302.2 km NW of epicenter [Map] / Weak shaking (MMI III) / Weak shaking (MMI III)

Pacific harbour / Light shaking (MMI IV)

Pago Pago (American Samoa, 902 km NE of epicenter) Felt here in American Samoa, United States. (reported through (reported through EMSC