Get our newsletter!
Check out our volcano tours on VolcanoAdventures.com!
Volcanoes & Earthquakes - new app for Android
Our New Book
Volcano Discoveries: "One of the most eye-catching guides to the world’s volcanoes ever published.
Volcano Tours
Our expert volcanologists and photographers offer unique travel experiences: volcano expeditions, photo tours, and relaxed walking & study tours.
Guaranteed tours
8-16 May 2021: From Stromboli to Etna - Sicila and Eolian Islands (Italy)
: spaces available / : guaranteed / : few spaces left / : booked out
Interactive map of latest earthquakes and active volcanoes in the world

Major mag. 7.3 earthquake - Luzon, Philippines on Saturday, 11 December 1999

Major mag. 7.3 earthquake - Luzon, Philippines on Saturday, 11 December 1999
Date & time: Saturday, 11 December 1999 18:03 UTC
Magnitude: 7.3
Depth: 33.0 km
Epicenter latitude / longitude: 15.766°N / 119.74°E (Philippines)
Nearest volcano: Pinatubo (96 km / 60 mi)
Nearby towns and cities:
15 km (9 mi) W of Bolitoc (pop: 3,100)
18 km (11 mi) W of Biay (pop: 2,300)
18 km (11 mi) W of Santa Cruz (pop: 26,400)
181 km (113 mi) NW of Caloocan City (pop: 1,500,000)
186 km (115 mi) NW of Manila (pop: 1,600,000)
188 km (117 mi) NW of Quezon City (pop: 2,761,700)
Primary data source: USGS
Estimated released energy: 5.6 x 1015 joules (1562 gigawatt hours, equivalent to 1.3 x 106 tons of TNT or 84 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although 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!

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.
TimeMag. / DepthLocationSource
Sat, 11 Dec 18:03 UTCM 7.3 / 33 kmLuzon, PhilippinesUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from 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!
to top
to top

Aftershocks of the 7.3 quake: Luzon, Philippines, 11 Dec 1999 18:03

More info
Recorded aftershocks, latest first (10 quakes):
  • 15 Nov 2000 09:23 UTC
    | M 5.5 |
    54.5 km (33.9 mi) depth
    |
    175 km (109 mi) distance
    | USGS | Details
  • 31 Aug 2000 11:58 UTC
    | M 5.1 |
    43.5 km (27 mi) depth
    |
    69 km (43 mi) distance
    | USGS | Details
  • 17 Jul 2000 03:30 UTC
    | M 5.1 |
    68.3 km (42.4 mi) depth
    |
    52 km (32 mi) distance
    | USGS | Details
  • 19 Jun 2000 01:59 UTC
    | M 5.7 |
    33 km (20.5 mi) depth
    |
    151 km (94 mi) distance
    | USGS | Details
  • 14 Jun 2000 01:44 UTC
    | M 5.7 |
    63 km (39.1 mi) depth
    |
    179 km (111 mi) distance
    | USGS | Details
  • 06 Jan 2000 21:31 UTC
    | M 6.2 |
    33 km (20.5 mi) depth
    |
    46 km (28 mi) distance
    | USGS | Strong mag. 6.2 earthquake - Luzon, Philippines on Thursday, 6 January 2000
  • 24 Dec 1999 22:53 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    118 km (73 mi) distance
    | USGS | Details
  • 22 Dec 1999 21:42 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    106 km (66 mi) distance
    | USGS | Details
  • 12 Dec 1999 17:27 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    12 km (7 mi) distance
    | USGS | Details
  • 12 Dec 1999 01:11 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    30 km (19 mi) distance
    | USGS | Details

to top

Earlier earthquakes in the same area

Major mag. 7.3 earthquake - Luzon, Philippines on Saturday, 11 December 1999
to top

More on VolcanoDiscovery

Erta Ale + Dallol
Desert, Salt & Volcanoes: One of our best volcano expeditions! Stay 3 full days / nights at the active lava lake of Erta Ale, explore the wonders of Dallol and the Danakil desert in northern Ethiopia. 14 days expedition during Nov-March, small groups, guided by geologist.
Seismic Activity Level
Worldwide earthquake activity level: What is the level of global earthquake activity today compared to the past? Find out with our graph showing the current and past Global Seismic Activity Level indicator!
Volcano Database
Alphabetical list of volcanoes: Find out all there is about a particular volcano
Eruption Specials
Volcano & eruption special tours: Tours dedicated to usually a single volcano currently in eruption. These trip, sometimes offered only last-minute through our newsletter, are among the most adventurous and most popular in our program.
 
Why is there advertising on this site?

Support us!

Maintaining the website and our free apps is a time- and cost-intensive effort.
If you find the information useful and would like to support our team to develop further features and get the upgraded ad-free version, consider making a donation (PayPal or Online cc payment).
Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
Thanks to your past donations, these features have been added recently:
  • Earthquake archive back to 1900
  • Additional data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.