Orbis Weather

Southeast Asia Earthquake Tracker โ€“ Live Earthquakes

By Paul Harrison | Founder & Publisher, Orbis Weather

Southeast Asia Earthquakes This Week: Friday, October 16, 2026

ยท @Paul

By Paul Harrison, Orbis Weather

Southeast Asia had a moderately active but damage-free week of earthquakes from Friday, October 9 to Thursday, October 15, 2026. The US Geological Survey (USGS) recorded 20 quakes of magnitude 4.5 or larger across the region and the Andaman Sea, all in Indonesia, the Philippines, the Banda Sea east of Timor-Leste and the Andaman Sea. The two strongest were a quake in the Indian Ocean south of Sukabumi, West Java, on Sunday, October 11, which Indonesia’s Meteorology, Climatology and Geophysics Agency (BMKG) rated magnitude 5.7, and one near Pohuwato in Gorontalo province, Sulawesi, before dawn on Monday, October 12, which BMKG first rated 5.7 and later revised to 5.4. USGS measured both at 5.2.

BMKG said neither quake had the potential to cause a tsunami, USGS gave none of the week’s quakes a tsunami flag, and no damage or casualties were reported in the agencies’ bulletins. The most recent felt quakes were a pair of shallow tremors of magnitude 3.5 and 4.1 near the border of Sukabumi and Bogor regencies in West Java on Thursday evening, which BMKG attributed to an active fault. No earthquake of magnitude 4.5 or larger was recorded in the region after Tuesday, October 13.

This report is current to 06:20 on Friday, October 16 in Jakarta and Bangkok (UTC+7); 07:20 in Manila, Makassar and Singapore (UTC+8); and 7:20 p.m. on Thursday, October 15 US Eastern Daylight Time (23:20 UTC Thursday).

Key facts

Item

Figure

Source

Period covered

00:00 UTC Fri Oct 9 to 23:19 UTC Thu Oct 15, 2026

USGS

Quakes of magnitude 4.5+ in Southeast Asia and the Andaman Sea

20

USGS

Largest (USGS)

Three quakes of magnitude 5.2: Molucca Sea off Bitung (Oct 9), south of West Java (Oct 11), west of Gorontalo (Oct 12)

USGS

Largest (BMKG)

Magnitude 5.7 south of Sukabumi (Oct 11); 5.7, revised to 5.4, near Pohuwato, Gorontalo (Oct 12)

BMKG, BMKG

Largest in the Philippines

Magnitude 4.9 off Dalupiri Island, Calayan, Cagayan (Oct 13)

PHIVOLCS

Strongest shaking reported

Intensity IV on the Modified Mercalli Intensity (MMI) scale in Tolitoli and Buol (Oct 12) and in Pamijahan and Kabandungan, Bogor (Oct 15)

BMKG

Tsunami

None; BMKG: “Tidak Berpotensi Tsunami” (no tsunami potential) for the two largest

BMKG

Deaths or damage

None reported

BMKG, news reports

Latest felt quake

Magnitude 2.7, 21 km west of Garut, West Java, 22:32 WIB Oct 15

BMKG warning page

This week’s earthquakes of magnitude 4.5 and above

The US Geological Survey (USGS) recorded 20 earthquakes of magnitude 4.5 or larger in Southeast Asia and the Andaman Sea between 00:00 UTC on Friday, October 9 and 23:19 UTC on Thursday, October 15. The largest measured 5.2. None was given a USGS impact alert, and none carried a tsunami flag. The table lists them newest first, using USGS magnitudes and locations; local times are converted from UTC.

Local date and time

Magnitude

Location (USGS)

Depth

Tue Oct 13, 23:21 PHT

4.8

8 km SE of Sarangani, Philippines

66 km

Tue Oct 13, 17:48 WITA

4.5

71 km SW of Tambolaka, Sumba, Indonesia

35 km

Tue Oct 13, 14:01 PHT

4.7

124 km N of Pagudpud, Philippines (offshore)

10 km

Tue Oct 13, 11:00 WIB

5.1

119 km SSW of Gambiran Satu, Indonesia (Indian Ocean south of Java)

10 km

Mon Oct 12, 21:07 IST

4.6

170 km SSE of Port Blair, India (Andaman Sea)

91 km

Mon Oct 12, 18:58 WIB

4.6

100 km SSW of Kencong, Indonesia (south of Java)

55 km

Mon Oct 12, 16:59 WITA

4.6

122 km SE of Bitung, Indonesia (Molucca Sea)

49 km

Mon Oct 12, 17:30 Timor-Leste time

4.7

219 km E of Lospalos, Timor-Leste (Banda Sea)

22 km

Mon Oct 12, 12:28 WIB

4.6

25 km SSE of Blitar, Indonesia

121 km

Mon Oct 12, 07:07 WIT

4.5

116 km SE of Nabire, Indonesia

10 km

Mon Oct 12, 05:34 WITA

5.2

152 km W of Gorontalo, Indonesia

111 km

Mon Oct 12, 03:47 WIT

4.6

184 km W of Fakfak, Indonesia

10 km

Sun Oct 11, 10:35 PHT

4.6

109 km SSE of Pondaguitan, Philippines

121 km

Sun Oct 11, 10:30 WIB

5.2

180 km S of Pelabuhanratu, Indonesia (south of West Java)

10 km

Sun Oct 11, 04:38 WIB

4.5

171 km SSW of Pagar Alam, Indonesia (south of Sumatra)

30 km

Sat Oct 10, 13:32 WITA

5.0

141 km E of Bitung, Indonesia

10 km

Sat Oct 10, 11:00 WIT

5.1

133 km WNW of Ternate, Indonesia (Molucca Sea)

10 km

Fri Oct 9, 17:17 PHT

4.6

17 km NNE of Santa Cruz, Philippines

10 km

Fri Oct 9, 16:47 WIB

4.9

77 km ENE of Tuapejat, Indonesia (Mentawai Islands)

41 km

Fri Oct 9, 13:11 WITA

5.2

117 km SE of Bitung, Indonesia (Molucca Sea)

40 km

Source: USGS earthquake catalogue, queried at 23:19 UTC on October 15. Time zones: WIB is Western Indonesia Time (UTC+7), WITA Central Indonesia Time (UTC+8), WIT Eastern Indonesia Time (UTC+9), PHT Philippine Time (UTC+8), Timor-Leste time UTC+9 and IST India Standard Time (UTC+5:30). Depths are rounded to the nearest kilometre.

No earthquake of magnitude 4.5 or larger occurred in the region after 15:21 UTC on October 13. The most recent quake above magnitude 4.0 in the USGS catalogue was a magnitude 4.3 at 22:12 WIB on Wednesday, October 14, 122 km southwest of Bengkulu, Sumatra, at a depth of 10 km.

Country by country

Indonesia had most of the week’s activity, along the Java Trench south of Java, in the Molucca Sea and in northern Sulawesi. The Philippines recorded several moderate quakes, the largest off the northern tip of Luzon. No quake of magnitude 4.0 or larger was recorded in mainland Southeast Asia.

Indonesia

BMKG times below are in Western Indonesia Time (WIB, UTC+7), as BMKG publishes them, with local time added where it differs.

Gorontalo, Sulawesi (Monday, October 12). A quake struck at 04:34:53 WIB (05:34 local time), BMKG reported. Its first estimate was magnitude 5.7 at a depth of 76 km; its press release updated this to magnitude 5.4 at 85 km, with the epicentre on land 29 km northwest of Pohuwato. BMKG classed it as an intermediate-depth quake caused by deformation within the Sulawesi Sea plate, with thrust faulting. Shaking reached intensity IV in Tolitoli and Buol and III in Pohuwato, Boalemo, Gorontalo and Bone Bolango. No aftershocks had been recorded by 04:50 WIB. USGS put the quake at magnitude 5.2, 152 km west of Gorontalo, at a depth of 111 km.

South of Sukabumi, West Java (Sunday, October 11). A magnitude 5.7 quake occurred at 10:30 WIB at a depth of 10 km, at sea 209 km southwest of Sukabumi regency, according to BMKG. BMKG said it was caused by subduction of the Indo-Australian plate, the process in which one tectonic plate slides beneath another. It was felt at intensity III in Surade, Cibitung and Tegalbuleud in Sukabumi. USGS measured it at magnitude 5.2.

Sukabumiโ€“Bogor border (Thursday, October 15). Two shallow quakes of magnitude 3.5 (17:49 WIB) and 4.1 (17:58 WIB) struck on land, the second at a depth of 5 km about 26 km southwest of Bogor city, Okezone reported, citing BMKG’s Region II office in Tangerang. Acting regional head Ana Oktavia Setiowati described it as “a shallow earthquake caused by active-fault activity” (translated from Indonesian). Shaking reached intensity IV in Pamijahan and Kabandungan. One aftershock of magnitude 2.4 followed, and no building damage was reported, VIVA said.

Molucca Sea (October 9โ€“12). Four quakes of magnitude 4.6 to 5.2 (USGS) struck the sea east and southeast of Bitung, North Sulawesi, and west-northwest of Ternate. The largest, on October 9, was rated 5.1 by BMKG at 12:11 WIB (13:11 local time), 125 km southeast of Bitung, and was felt at intensity III in Tondano and Bitung, according to BMKG’s felt-quake list.

South of Java and Bali (October 12โ€“13). BMKG recorded a magnitude 4.9 at 11:00 WIB on October 13, at sea 141 km southwest of Jembrana, Bali, felt at intensity III in Jember and IIโ€“III in Kuta Selatan, Denpasar and Karangasem. A magnitude 4.6 at 18:58 WIB on October 12, 121 km southwest of Lumajang, was felt at intensity III in Lumajang, Malang and Jember. USGS rated these 5.1 and 4.6.

Sumba, East Nusa Tenggara (October 12โ€“13). BMKG recorded three quakes of magnitude 4.3 to 4.6 at sea 15 to 27 km south of Kodi, Southwest Sumba regency, between 23:56 WIB on October 12 and 16:48 WIB on October 13. They were felt at up to intensity IIIโ€“IV in Southwest Sumba. USGS measured a magnitude 5.9 quake 39 km west-southwest of Tambolaka on October 3, the region’s largest in the USGS catalogue since mid-September.

Other Indonesian quakes. BMKG also recorded a magnitude 4.6 northeast of Sipora in the Mentawai Islands on October 9 (USGS: 4.9), a magnitude 4.5 near Deiyai in Central Papua on October 12, and a magnitude 4.5 at sea 103 km south of Pacitan, East Java, on October 13.

Philippines

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) listed nine quakes of magnitude 4.0 or larger between October 9 and 15. The six largest:

Date and time (PHT)

Magnitude (PHIVOLCS)

Location (PHIVOLCS)

Depth

Tue Oct 13, 2:01 p.m.

4.9

21 km N 13ยฐ W of Dalupiri Island, Calayan, Cagayan

18 km

Tue Oct 13, 11:21 p.m.

4.7

29 km S 23ยฐ W of Balut Island, Sarangani, Davao Occidental

52 km

Sun Oct 11, 10:35 a.m.

4.5

131 km S 68ยฐ E of Sarangani Island, Davao Occidental

80 km

Wed Oct 14, 8:07 p.m.

4.4

59 km N 82ยฐ W of Luna, La Union

13 km

Fri Oct 9, 3:31 p.m.

4.2

13 km N 60ยฐ W of Panglao, Bohol

9 km

Sun Oct 11, 1:15 a.m.

4.1

83 km S 79ยฐ E of Jose Abad Santos, Davao Occidental

26 km

Source: PHIVOLCS earthquake list. No quake of magnitude 4.0 or larger was listed on October 15.

An earthquake near Ilagan City, Isabela, at 8 p.m. on October 13 was felt at instrumental intensity II in Ilagan, with no damage reported, the Daily Tribune said. The newspaper gave the magnitude as 4.2; the PHIVOLCS list gives 4.0 at a depth of 19 km.

This week’s quakes off Davao Occidental struck the same broad offshore region as the magnitude 7.8 Mindanao earthquake of June 7, 2026, which killed 107 people and injured 1,320, according to Wikipedia’s list of 2026 earthquakes. Aftershocks of magnitude 6.2 to 6.5 followed offshore near Sarangani in June, July and August.

Timor-Leste

USGS recorded a magnitude 4.7 quake in the Banda Sea 219 km east of Lospalos at 17:30 local time on October 12, at a depth of 22 km, and a magnitude 4.4 at 13:45 on October 10, 53 km northwest of Pante Makasar in the Oecusse enclave, at a depth of 68 km.

Andaman Sea and Myanmar

A magnitude 4.6 quake struck the Andaman Sea 170 km south-southeast of Port Blair, India’s Andaman Islands, at 21:07 India Standard Time on October 12, at a depth of 91 km, USGS reported. No quake of magnitude 4.0 or larger was recorded inside Myanmar.

Mainland Southeast Asia and Malaysia

The USGS catalogue lists no quake of magnitude 4.0 or larger in Thailand, Vietnam, Laos, Cambodia, Malaysia, Singapore or Brunei this week.

Damage, casualties and tsunami status

No deaths, injuries or building damage were reported from any earthquake in Southeast Asia this week. BMKG’s bulletins for the two magnitude 5.7 quakes, on October 11 and 12, reported no damage, and BMKG’s regional office reported no building damage from the Sukabumiโ€“Bogor quakes on October 15. The Daily Tribune reported no damage from the October 13 quake near Ilagan, Isabela.

There is no tsunami threat. BMKG’s bulletins for both magnitude 5.7 quakes said “Tidak Berpotensi Tsunami” (no tsunami potential), and USGS gave none of the week’s quakes a tsunami flag. None of the week’s quakes carried a USGS impact alert level. BMKG’s standard advice after each quake was “beware of possible aftershocks” (translated from Indonesian).

Why Southeast Asia has so many earthquakes

Most of this week’s quakes happened where tectonic plates collide beneath Indonesia and the Philippines. About 90% of the world’s earthquakes occur along the Ring of Fire, the belt of plate boundaries around the Pacific, and Indonesia lies where that belt meets the Alpide belt, Wikipedia’s Ring of Fire article notes.

  • Sunda megathrust (south of Sumatra, Java and Bali). This plate boundary runs about 5,500 km from Myanmar along southwestern Sumatra and south of Java and Bali. Here the Indo-Australian plate slides beneath the Eurasian plate, according to Wikipedia. It produced the magnitude 9.2โ€“9.3 Indian Ocean earthquake and tsunami of December 26, 2004, which killed more than 227,000 people. BMKG attributed this week’s magnitude 5.7 quake south of Sukabumi to this subduction.
  • Philippine Trench (east of the Philippines). The trench runs about 1,320 km from central Luzon to Halmahera in Indonesia, with subduction estimated at about 15 cm a year, Wikipedia says.
  • Sulawesi and the Molucca Sea. BMKG linked the Gorontalo quake to deformation within the Sulawesi Sea plate. The Molucca Sea produced four of this week’s quakes of magnitude 4.6 or more.
  • Active faults on land. BMKG attributed Thursday’s shallow tremors near Bogor to an active fault, a crack in the crust that can still move.

Depth matters for shaking. USGS classes quakes from 0 to 70 km deep as shallow, 70 to 300 km as intermediate and 300 to 700 km as deep, its depth guide explains. Shaking at any place depends mostly on its distance from the fault rupture, USGS notes, so the depth of a quake affects how strongly it is felt at the surface.

What to watch

  • Aftershocks. BMKG advised people near this week’s larger quakes to beware of possible aftershocks. None was recorded in the first 15 to 20 minutes after the two magnitude 5.7 quakes, and one magnitude 2.4 aftershock followed the Sukabumiโ€“Bogor tremors on Thursday.
  • Sumba and the Sunda Arc. Three felt quakes of magnitude 4.3 to 4.6 struck south of Kodi, Southwest Sumba, on October 12โ€“13, in the area where USGS recorded a magnitude 5.9 on October 3.
  • Southern Mindanao. PHIVOLCS recorded quakes of magnitude 4.1 to 4.7 off Davao Occidental this week, in the region of the June 7 magnitude 7.8 earthquake.
  • Volcanic earthquakes. Not every quake is tectonic. In the Philippines, PHIVOLCS logged 34 volcanic earthquakes in 24 hours at Taal in its October 12 bulletin, the Inquirer reported, and in Indonesia, Semeru recorded 26 eruption earthquakes between 12:00 and 18:00 WIB on October 15, Databoks reported.
  • Official channels. BMKG asks the public to rely on its official channels, including @infoBMKG, bmkg.go.id and the InfoBMKG app, VIVA reported. In the Philippines, PHIVOLCS publishes earthquake information on its website.

About this article

This weekly article summarises earthquake data and bulletins from the US Geological Survey (USGS), Indonesia’s BMKG and the Philippines’ PHIVOLCS, along with news reports. It is not an official warning. For earthquake and tsunami alerts, follow your national agency: BMKG in Indonesia, PHIVOLCS in the Philippines, and the national meteorological or disaster agency elsewhere.

Terms used

  • Magnitude: the size of an earthquake. Each whole-number step means a tenfold increase in measured ground motion on a seismogram and about 32 times more energy released, according to USGS. An earthquake has one magnitude, but agencies calculate it with different methods and data, so their figures can differ.
  • Intensity: the strength of shaking at a particular place, written in Roman numerals. BMKG uses the Modified Mercalli Intensity (MMI) scale, on which III is felt indoors like a passing truck and IV is felt by many people indoors. PHIVOLCS reports instrumental intensity measured by its own stations.
  • Depth: shallow quakes are 0โ€“70 km deep, intermediate 70โ€“300 km and deep 300โ€“700 km.
  • Epicentre: the point on the surface above where the rupture began.
  • Aftershock: a smaller quake that follows a larger one in the same area.
  • Subduction: the sliding of one tectonic plate beneath another.

Notes on the figures

  • The week runs from 00:00 UTC on Friday, October 9 to 23:19 UTC on Thursday, October 15, 2026. The main table covers latitudes 12ยฐS to 29ยฐN and longitudes 91ยฐE to 142ยฐE; quakes in that box outside Southeast Asia and the Andaman Sea (near Japan, Papua New Guinea and northeast India) are left out.
  • USGS, BMKG and PHIVOLCS often give different magnitudes, depths and locations for the same quake. This article gives each agency’s figure with its source. For example, BMKG rated the October 11 quake south of Sukabumi at 5.7 and USGS at 5.2.
  • BMKG often revises its first automatic figures in a later press release; where it did, both are given.
  • A depth of 10 km in the USGS table often appears when the depth could not be well determined, so those depths are approximate.
  • Local times are converted from UTC; BMKG publishes in WIB (UTC+7) and PHIVOLCS in Philippine time (UTC+8).
  • Background on past earthquakes is drawn from Wikipedia, which cites agency data.

Limits

  • Smaller quakes below magnitude 4.0 are mentioned only when they were widely felt.
  • Figures for the most recent quakes may still be revised by the agencies.

Frequently asked questions

What was the strongest earthquake in Southeast Asia this week? BMKG rated two quakes at magnitude 5.7: one in the Indian Ocean 209 km southwest of Sukabumi, West Java, at 10:30 WIB on October 11, and one near Pohuwato, Gorontalo, at 04:34 WIB on October 12, later revised to 5.4. USGS measured both at 5.2, alongside a third magnitude 5.2 in the Molucca Sea on October 9.

Was there a tsunami warning? No. BMKG said the two strongest quakes had no tsunami potential, and USGS flagged none of the week’s quakes for tsunami.

Did anyone die or were buildings damaged? No deaths, injuries or building damage were reported from any of the week’s earthquakes.

Was the earthquake near Bogor on Thursday dangerous? The magnitude 4.1 quake at 17:58 WIB on October 15 was shallow, at 5 km, and was felt at intensity IV in Pamijahan and Kabandungan. BMKG received no reports of building damage, and one small aftershock of magnitude 2.4 followed.

What was the largest earthquake in the Philippines this week? A magnitude 4.9 quake, according to PHIVOLCS, 21 km north (N 13ยฐ W) of Dalupiri Island in Calayan, Cagayan, at 2:01 p.m. on October 13, at a depth of 18 km. USGS rated it 4.7.

Why do BMKG, PHIVOLCS and USGS give different magnitudes? Each agency uses its own seismic stations and calculation methods, and early figures are often revised as more data arrives. The differences this week were up to half a magnitude unit.

Were there earthquakes in Thailand, Vietnam, Malaysia or Myanmar? The USGS catalogue lists no quake of magnitude 4.0 or larger in those countries this week. The nearest notable event was a magnitude 4.6 in the Andaman Sea south-southeast of Port Blair on October 12.

ORBIS WEATHER โ€ข ASIA-PACIFIC
๐ŸŒ Southeast Asia Earthquake Tracker
Live M4.0+ earthquake activity across Indonesia, the Philippines, Malaysia, Singapore, Thailand, Vietnam, Myanmar and surrounding Southeast Asia.
Loading USGS dataโ€ฆ
REGIONAL EARTHQUAKE ACTIVITY โ€ข LAST 24 HOURS
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STRONGEST EARTHQUAKE
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Checking the regionโ€ฆ
M4.0+ โ€ข 24 HOURS๐Ÿ“
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Regional earthquakes detected in the last day.
M5.0+ โ€ข 7 DAYSโš ๏ธ
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Moderate or stronger earthquakes during the last week.
M6.0+ โ€ข 7 DAYS๐Ÿ”ด
โ€”
Strong earthquakes during the last week.
TSUNAMI FLAGS๐ŸŒŠ
โ€”
USGS events carrying a tsunami flag in this regional query.

๐Ÿ•’ Latest M4.0+ Earthquakes

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๐ŸŒ Regional Activity โ€ข Last 7 Days

๐Ÿ‡ฎ๐Ÿ‡ฉ Indonesiaโ€”
๐Ÿ‡ต๐Ÿ‡ญ Philippinesโ€”
๐Ÿ‡ฒ๐Ÿ‡ฒ Myanmarโ€”
๐Ÿ‡ฒ๐Ÿ‡พ Malaysia / Singaporeโ€”
๐ŸŒ Other SE Asiaโ€”
Country groupings are approximate geographic classifications based on epicenter coordinates, not political or agency catalog boundaries.

๐ŸŒŠ Tsunami Note

A tsunami flag does not by itself mean a tsunami will affect every coastline. For any large or shallow offshore earthquake, use official tsunami warnings and local emergency instructions. Earthquake magnitudes and locations can also be revised as seismic agencies analyze additional data.

Official Sources

Live event data in this browser widget comes from the USGS Earthquake Catalog. BMKG is provided as the primary official Indonesian earthquake reference.

๐ŸŒ Southeast Asia Earthquake Tracker โ€“ Live Earthquakes

Monitor earthquakes across Indonesia, the Philippines, Myanmar, Malaysia, Singapore, Thailand, Vietnam and surrounding areas with the Orbis Weather Southeast Asia Earthquake Tracker.

Southeast Asia lies within one of the most geologically active regions on Earth. Powerful tectonic forces surrounding Indonesia and the Philippines regularly produce earthquakes, volcanic activity and, in some circumstances, tsunamis.

The Orbis Weather tracker provides a regional view of significant earthquake activity, including recent M4.0+ earthquakes, stronger events and earthquakes carrying tsunami-related flags in the source data.

Earthquake parameters can be revised as seismic agencies analyze additional information, so always consult national authorities for official earthquake and tsunami warnings.

๐ŸŒ Why Southeast Asia Has So Many Earthquakes

Southeast Asia sits near the boundaries of several major and smaller tectonic plates.

These enormous sections of Earth’s crust move slowly relative to one another.

Where plates collide, slide past each other or one plate descends beneath another, stress can accumulate in the Earth’s crust.

When that stress is suddenly released, an earthquake occurs.

Indonesia and the Philippines are particularly active because they lie along complicated plate boundaries associated with the broader Pacific Ring of Fire.

๐Ÿ”ฅ What Is the Pacific Ring of Fire?

The Pacific Ring of Fire is a vast zone of earthquakes and volcanoes surrounding much of the Pacific Ocean.

It extends through areas including New Zealand, Indonesia, the Philippines, Japan, Russia, Alaska and the western coasts of North and South America.

Many of the world’s active volcanoes and powerful earthquakes occur within this broad tectonic region.

Indonesia and the Philippines form important parts of this system.

๐Ÿ‡ฎ๐Ÿ‡ฉ Why Indonesia Has So Many Earthquakes

Indonesia is one of the most earthquake-prone countries in the world.

The country sits at the meeting point of several tectonic systems, including major subduction zones.

Along a subduction zone, one tectonic plate is forced beneath another.

These boundaries can produce powerful earthquakes when accumulated tectonic stress is suddenly released.

Indonesia’s geography โ€” thousands of islands spread across several active tectonic zones โ€” means earthquake activity can occur from Sumatra and Java through Sulawesi, the Banda Sea, Maluku and Papua.

๐Ÿ‡ต๐Ÿ‡ญ Earthquakes in the Philippines

The Philippines is also highly seismically active.

The country lies between major tectonic systems and contains numerous active faults and offshore trenches.

Earthquakes can occur beneath the islands or offshore.

Some offshore earthquakes may require tsunami evaluation depending on their magnitude, depth, location and fault movement.

As in Indonesia, earthquake risk varies considerably between different parts of the country.

๐Ÿ‡ฒ๐Ÿ‡ฒ Earthquakes in Myanmar

Myanmar has a different but still important tectonic setting.

One of its major geological features is the Sagaing Fault, a large strike-slip fault extending through much of the country.

Strike-slip faults occur where blocks of Earth’s crust move primarily horizontally past each other.

Significant earthquakes along active faults can cause intense ground shaking, particularly near populated areas.

๐Ÿ‡ธ๐Ÿ‡ฌ Can Singapore Experience Earthquakes?

Singapore has a much lower local earthquake hazard than Indonesia or the Philippines because it is not located directly on a major active plate boundary.

However, powerful earthquakes in Sumatra can sometimes produce noticeable shaking in Singapore.

Shaking may be particularly noticeable to occupants of taller buildings.

This does not mean Singapore has suddenly become the epicenter of an earthquake. Seismic waves from sufficiently powerful regional earthquakes can travel considerable distances.

๐Ÿ‡ฒ๐Ÿ‡พ Earthquakes and Malaysia

Much of Peninsular Malaysia has relatively low seismicity compared with neighboring Indonesia.

However, earthquakes in Sumatra can sometimes be felt across parts of Malaysia.

East Malaysia is closer to more active tectonic regions, and Sabah in particular has experienced damaging earthquakes.

Regional earthquake monitoring is therefore relevant even in countries that experience fewer major local earthquakes.

๐Ÿ‡น๐Ÿ‡ญ Earthquakes in Thailand

Thailand is not as seismically active as Indonesia, but earthquake hazards still exist.

Northern and western Thailand contain active faults, while powerful earthquakes in neighboring Myanmar can produce shaking across the border.

Earthquake risk should therefore not be considered zero simply because major events occur less frequently.

๐Ÿ‡ป๐Ÿ‡ณ Earthquakes in Vietnam

Vietnam generally experiences less earthquake activity than Indonesia or the Philippines, but earthquakes do occur.

Northern Vietnam and other areas contain active fault systems capable of producing seismic activity.

Offshore earthquakes elsewhere in the region may also be relevant when evaluating tsunami hazards.

๐Ÿ“ What Does Earthquake Magnitude Mean?

Magnitude measures the size of an earthquake at its source.

The scale is logarithmic rather than linear.

That means the difference between a magnitude 5 and magnitude 6 earthquake is much more substantial than the numbers might suggest.

Each whole-number increase represents approximately 32 times more energy release.

A magnitude 6 earthquake therefore releases roughly 32 times as much energy as a magnitude 5 earthquake.

Magnitude alone does not determine how destructive an earthquake will be.

๐Ÿ“ What Is an Earthquake Epicenter?

The earthquake begins underground at a location known as the hypocenter, or focus.

The epicenter is the point on Earth’s surface directly above that underground source.

Maps generally display the epicenter because it provides a convenient geographic location for the earthquake.

The strongest shaking does not necessarily occur exactly at that point.

Local geology, fault rupture direction, building construction and earthquake depth can all influence shaking.

โฌ‡๏ธ Why Earthquake Depth Matters

Earthquakes can occur at very different depths.

A shallow earthquake places the source of seismic energy closer to the surface and can therefore produce strong shaking near the epicenter.

Deeper earthquakes may be felt across larger areas but often produce less intense surface shaking near their epicenters than a similarly sized shallow event.

Southeast Asia experiences both shallow and very deep earthquakes because of its complex subduction zones.

โš ๏ธ What Does M4.0+ Mean on the Orbis Tracker?

The Orbis Weather regional tracker focuses primarily on earthquakes of magnitude 4.0 and above.

This helps prevent the map from becoming overwhelmed by the very large number of small earthquakes detected across such an active region.

Many M4-range earthquakes cause little or no damage.

The effects of any earthquake depend on magnitude, depth, distance from populated areas, local ground conditions and construction quality.

๐Ÿ”ด What Does an M6.0+ Earthquake Mean?

Magnitude 6 and larger earthquakes deserve increased attention because they have greater potential to produce damaging shaking.

That does not mean every M6 earthquake will cause a disaster.

A deep M6 earthquake far offshore may have relatively limited effects, while a shallow earthquake close to a densely populated city can be considerably more dangerous.

Location and depth always matter.

๐ŸŒŠ Can Southeast Asian Earthquakes Cause Tsunamis?

Yes.

Southeast Asia contains several tectonic zones capable of generating tsunamis.

However, not every large earthquake produces a tsunami.

A damaging tsunami generally requires substantial displacement of ocean water. Large, shallow earthquakes beneath or near the ocean are therefore of particular concern when they involve vertical seafloor movement.

Indonesia’s BMKG operates earthquake and tsunami-warning services and publishes tsunami-related earthquake information.

๐ŸŒŠ What Does the Tsunami Flag Mean?

The Orbis tracker identifies USGS events carrying a tsunami flag.

This requires careful interpretation.

A tsunami flag does not mean a destructive tsunami is heading toward every coastline.

It indicates that the earthquake has tsunami-related significance within the source data.

The Orbis page already correctly warns readers that official tsunami warnings and local emergency instructions should be used for large or shallow offshore earthquakes.

Keep that warning exactly in spirit.

๐ŸŒŠ Why Offshore Earthquake Location Matters

A powerful earthquake beneath land cannot directly displace a large body of seawater in the same way as an undersea earthquake.

For tsunami generation, the type of fault movement is also important.

A large undersea earthquake involving substantial vertical displacement of the seafloor can suddenly move the water above it.

That disturbance can generate tsunami waves traveling away from the source.

Scientists therefore examine much more than magnitude when assessing tsunami potential.

๐ŸŒŠ The 2004 Indian Ocean Tsunami

Southeast Asia’s earthquake risk was tragically demonstrated by the December 2004 Sumatra-Andaman earthquake and Indian Ocean tsunami.

The enormous undersea earthquake off northern Sumatra generated a devastating tsunami affecting coastlines around the Indian Ocean.

The disaster fundamentally changed tsunami awareness and contributed to major improvements in regional warning and monitoring systems.

It also demonstrated why people living near tsunami-prone coastlines should understand natural warning signs and official evacuation procedures.

๐ŸŒ‹ Earthquakes and Volcanoes

Indonesia and the Philippines experience both frequent earthquakes and volcanic eruptions because the same broad tectonic processes contribute to both hazards.

However, an earthquake occurring near a volcano does not automatically mean the volcano is about to erupt.

Volcanologists examine many indicators when evaluating volcanic unrest, including earthquake patterns, ground deformation, volcanic gas emissions and changes in temperature.

For Indonesian volcanic activity, visitors can use the Orbis Weather Indonesia Volcano Tracker alongside this earthquake page.

๐Ÿ” What Are Aftershocks?

Aftershocks are earthquakes occurring after a larger earthquake as the surrounding crust adjusts to the new distribution of stress.

Some aftershocks can be strong enough to cause additional damage.

They may continue for days, weeks, months or longer following a major earthquake.

The largest aftershocks are especially important when buildings have already been weakened by the initial earthquake.

๐Ÿ“ˆ What Is an Earthquake Swarm?

An earthquake swarm is a sequence containing many earthquakes in a relatively small area without one event necessarily dominating the sequence as a clear mainshock.

Swarm activity can occur for different geological reasons.

An earthquake swarm by itself does not mean that a major earthquake or volcanic eruption is imminent.

Scientists analyze the location, depth, frequency and other characteristics of the earthquakes to understand what may be happening.

๐Ÿ”„ Why Earthquake Magnitudes Sometimes Change

Initial earthquake information is often preliminary.

As additional seismic stations report data and scientists refine their analysis, the estimated magnitude, depth and exact epicenter can change.

Indonesia’s BMKG explicitly warns that earthquake parameters can change during the first minutes after an event before expert review.

That is normal and does not mean the earthquake itself changed after it occurred.

It means scientists obtained a better estimate.

๐Ÿ™๏ธ Why Some Earthquakes Cause More Damage Than Others

Magnitude is only one factor.

Damage can depend on:

Earthquake depth โ€” shallow earthquakes can create intense nearby shaking.

Distance โ€” communities closer to the rupture generally experience stronger shaking.

Ground conditions โ€” soft sediments can amplify seismic waves.

Building construction โ€” earthquake-resistant structures generally perform better.

Duration โ€” prolonged strong shaking can increase damage.

Population density โ€” the same earthquake can have dramatically different human consequences depending on where it occurs.

๐Ÿข Why Tall Buildings Can Feel Distant Earthquakes

Long-period seismic waves from powerful earthquakes can travel great distances.

Tall buildings can respond more noticeably to these slower oscillations than small, rigid structures.

This helps explain why people in high-rise buildings in places such as Singapore or Kuala Lumpur may occasionally report swaying from a powerful distant earthquake.

Feeling an earthquake does not necessarily mean structural damage is occurring.

๐Ÿงญ Can Scientists Predict Earthquakes?

Scientists cannot currently predict the exact time, location and magnitude of a future earthquake with the precision needed to issue conventional short-term earthquake forecasts.

Seismologists can identify active faults, estimate long-term earthquake probabilities and rapidly detect earthquakes after they begin.

Earthquake early-warning systems can sometimes provide seconds of warning after an earthquake has started but before the strongest seismic waves reach locations farther away.

That is fundamentally different from predicting an earthquake days or weeks in advance.

๐Ÿ›ก๏ธ What Should You Do During an Earthquake?

Earthquake safety advice can vary somewhat by country and environment, so local emergency guidance should take priority.

In many situations, people indoors are advised to Drop, Cover and Hold On โ€” drop to the ground, take cover beneath sturdy furniture if available and hold on until shaking stops.

Stay away from windows and objects that could fall.

After strong shaking near a tsunami-prone coastline, immediately follow local tsunami evacuation instructions.

๐Ÿ›ฐ๏ธ How the Southeast Asia Earthquake Tracker Works

The Orbis Weather Southeast Asia Earthquake Tracker queries the USGS Earthquake Catalog for regional seismic activity.

The USGS catalog supports filtering earthquake information by magnitude, date, geographic region and depth.

Orbis organizes that information into a simplified Southeast Asia dashboard showing recent activity, stronger earthquakes and regional groupings.

Country groupings are approximate geographic classifications based on epicenter coordinates rather than official political or seismic-agency boundaries.

๐Ÿ“ก Official Earthquake Sources

The USGS provides the live event data used by the current Orbis browser widget.

For Indonesia, BMKG is an essential official regional source for earthquake and tsunami information.

National geological, meteorological and disaster-management agencies should always be consulted when a significant earthquake affects a particular country.

Official authorities โ€” not Orbis Weather โ€” determine local tsunami warnings, evacuation orders and emergency actions. BMKG’s tsunami service similarly states that national, state and local authorities are responsible for official threat and warning decisions.

๐ŸŒ Monitor Earthquakes Across Southeast Asia

Southeast Asia’s complicated tectonic setting makes continuous earthquake monitoring valuable.

Indonesia and the Philippines experience particularly frequent seismic activity, while earthquakes in Myanmar, Malaysia, Thailand, Vietnam and neighboring areas can also pose local or regional hazards.

Use the Orbis Weather Southeast Asia Earthquake Tracker to monitor significant seismic activity, then consult official national authorities whenever a potentially damaging earthquake or tsunami threat develops.

For additional regional monitoring, explore the Orbis Weather Indonesia Volcano Tracker, Southeast Asia Natural Hazards, Singapore Weather & Natural Hazards and Daily Southeast Asia Weather & Natural Hazards Briefing.

โš ๏ธ Important Earthquake & Tsunami Disclaimer

The Orbis Weather Southeast Asia Earthquake Tracker is provided for general information, education and situational awareness.

Earthquake magnitudes, locations and depths may initially be preliminary and can be revised as additional seismic data becomes available.

A tsunami flag displayed by the tracker does not mean a tsunami has been confirmed or that a particular coastline will be affected.

For significant earthquakes, tsunami warnings, evacuation information and emergency instructions, consult the responsible national and local authorities.

Do not use Orbis Weather alone for earthquake or tsunami life-safety decisions