Indonesia, M7.7 Earthquake in East Nusa Tenggara

Earthquake in East Nusa Tenggara Province

➢ Chronology:

An earthquake occurred with the following updated details:

● Magnitude: 7.7 SR (Richter Scale)

● Date: 15-Aug-2026

● Earthquake Time: 04:58:24 WIB (Western Indonesian Time)

● Latitude: 8.41° S

● Longitude: 121.39° E

● Depth: 15 km

● Potential for TSUNAMI

➢ Aftershock I

● Magnitude: Mag 6.2

● Date: 15-Aug-2026

● Earthquake Time: 05:13:53 WIB

● Latitude: 8.14° S

● Longitude: 120.11° E

● Depth: 10 km

● Epicenter located at sea

● No tsunami potential

● 46 km Northeast of Labuan Bajo - NTT

● 65 km Northwest of Ruteng - Manggarai - NTT

● 87 km Northwest of Borong - NTT

● 340 km Southeast of Makassar - South Sulawesi

● 1492 km Southeast of Jakarta - Indonesia

➢ Aftershock II

● Magnitude: Mag 5.5

● Date: 15-Aug-2026

● Earthquake Time: 05:13:53 WIB

● Latitude: 8.14° S

● Longitude: 120.11° E

● Depth: 10 km

● Epicenter located at sea

● No tsunami potential

● 56 km Northeast of Ruteng - Manggarai - NTT

● 73 km Northwest of Borong - NTT

● 79 km Northeast of Labuan Bajo - NTT

● 348 km Southeast of Makassar - South Sulawesi

● 1533 km Southeast of Jakarta - Indonesia

➢ Earthquake Aftershock III

● Magnitude: Mag 6.2

● Date: 15-Aug-2026

● Earthquake Time: 05:28:40 WIB

● Latitude: 8.34° S

● Longitude: 121.54° E

● Depth: 10 km

● Epicenter located at sea

● No tsunami potential

● 45 km Northeast of Mbay, Nagekeo, NTT

● 57 km Northwest of Ende, NTT

● 80 km Northwest of Maumere, Sikka, NTT

● 307 km Northwest of Kupang, NTT

● 1652 km Southeast of Jakarta, Indonesia

➢ Aftershock IV

● Magnitude: Mag 5.6

● Date: 15-Aug-2026

● Earthquake Time: 05:37:19 WIB

● Latitude: 8.15° S

● Longitude: 120.17° E

● Depth: 11 km

● Epicenter located at sea

● No tsunami potential

● 49 km Northeast of Labuan Bajo, NTT

● 60 km Northwest of Ruteng, Manggarai, NTT

● 82 km Northwest of Borong, NTT

● 343 km Southeast of Makassar, South Sulawesi

● 1499 km Southeast of Jakarta, Indonesia

➢ Aftershock V

● Magnitude: Mag 5.0

● Date: 15-Aug-2026

● Earthquake Time: 10:54:14 WIB

● Latitude: 8.32° S

● Longitude: 121.45° E

● Depth: 10 km

● Epicenter located at sea

● No tsunami potential

● 42 km Northeast MBAY-NAGEKEO-NTT

● 62 km northwest of ENDE-NTT

● 75 km northeast of BAJAWA-NGADA-NTT

● 316 km northwest of KUPANG-NTT

● 1,642 km southeast of JAKARTA-INDONESIA

➢ Location: (District / Village)

● 30 km northeast of MBAY-NAGEKEO-NTT

● 56 km northwest of ENDE-NTT

● 63 km northeast of BAJAWA-NGADA-NTT

● 315 km northwest of KUPANG-NTT

● 1,637 km southeast of JAKARTA-INDONESIA

As of 18:00 WIB, BMKG monitoring results indicate 341

aftershock events with magnitudes ranging from 2.5 to 6.2.

➢ Casualties:

● 47 (forty-seven) fatalities, detailed as follows:

a. West Manggarai Regency: 1 (one) fatality

b. East Manggarai Regency: 20 (twenty) fatalities (increase of 3)

c. Manggarai Regency: 23 (twenty-three) fatalities

d. Sikka Regency: 4 (four) fatalities

e. Ende Regency: 1 (one) fatality

f. Nagekeo: 1 (one) fatality

● ± 137 (one hundred thirty-seven) injured persons (data collection ongoing)

● ± 39 (thirty-nine) persons with serious injuries (data collection ongoing)

● 7 (seven) persons with minor injuries (data collection ongoing), detailed as follows:

a. Manggarai Regency: 31 (thirty-one) seriously injured, 88 (eighty-eight) with minor injuries

b. West Manggarai Regency: 6 (six) injured

c. East Manggarai Regency: 21 (twenty-one) with minor injuries, 3 (three) seriously injured

d. Ngada Regency: 1 (one) seriously injured, 7 (seven) with minor injuries

e. Sikka Regency: 1 (one) seriously injured, 11 (eleven) with minor injuries

f. Regency of... Ende: 11 people with minor injuries, 3 people with serious injuries

● ± 1,527 households (KK) affected (data collection ongoing)

with details:

NTT Province

● Manggarai Regency: 648 households affected

● East Manggarai Regency: 49 households affected

● West Manggarai Regency: 191 households affected

● Ende Regency: 81 households affected

● Nagekeo Regency: 4 households affected

● Ngada Regency: 537 households affected

NTB Province

● Bima City: 1 household / 6 people affected, 1 person with minor injuries

● Bima Regency: data collection ongoing

South Sulawesi Province

● Selayar Islands Regency: ± 16 households affected (data collection ongoing)

Displaced persons:

● Total displaced persons: ± 4,339 people in centralized shelters & 2,000 people

displaced independently (data collection ongoing)

a. Bima Regency: ± 300 people displaced (data collection ongoing)

b. Selayar Islands Regency: 105 people still displaced

c. Manggarai Regency: ± 2,078 people displaced

d. Sikka Regency: 1,356 people displaced at Samador Sports Hall and 2,000 people

displaced independently at 10 evacuation sites

e. Nagekeo Regency: 500 people displaced

➢ Material Losses:

● ± 537 housing units affected (data collection ongoing)

● ± 914 housing units heavily damaged (RB) (data collection ongoing)

● ± 126 housing units moderately damaged (RS) (data collection ongoing)

● ± 317 housing units lightly damaged (RR) (data collection ongoing)

● ± 19 public facility units affected (data collection ongoing)

● ● ± 38 government office units affected (assessment ongoing)

● ± 36 health facility units affected (assessment ongoing)

● ± 25 public facility units affected (assessment ongoing)

● ± 19 educational facility units (heavily damaged)

● 4 educational facility units (severely damaged)

● ± 17 educational facility units (moderately damaged)

● ± 53 educational facility units affected

● 4 health facility units affected

● 1 Bulog warehouse unit affected (assessment ongoing)

● 1 hotel unit (heavily damaged)

● 1 KDMP building unit (moderately damaged)

● 14 roads affected (assessment ongoing)

with details:

NTT Province

● Nagekeo Regency

- 2 house units (heavily damaged)

- 2 house units (moderately damaged)

- 2 religious facility units (moderately damaged)

- 5 government offices affected

● Ende Regency

- 56 house units (moderately damaged)

- 2 house units (severely damaged)

- 2 house units (heavily damaged)

- 14 health facility units (moderately damaged)

- 3 road access points affected

- 2 religious facility units affected (assessment ongoing)

- 5 public facility units affected

- 1 educational facility unit (heavily damaged) (assessment ongoing)

- 2 educational facility units (severely damaged)

- 1 educational facility unit (moderately damaged)

- 1 Military Rayon Command (Koramil) unit damaged

- 1 Police Resort (Polres) dormitory perimeter wall damaged

- 4 road sections damaged: Trans Ende-Nagekeo, Trans Ende-Arubara, Trans Ende-Wolotopo, and Manulondo Aekipa-Puutuga Kelikiku

● Manggarai Regency

- 601 house units (heavily damaged)

- 10 house units (severely damaged)

- 37 house units (moderately damaged)

- 9 government facilities damaged

- 10 public facilities damaged

- 5 health facility units damaged

- 13 educational facility units affected

● East Manggarai Regency

- 23 house units (heavily damaged)

- 15 house units (severely damaged)

- 11 house units (moderately damaged)

- 2 church units damaged

- 1 urban village office unit affected

● West Manggarai Regency

- 122 heavily damaged (RB) houses

- 30 moderately damaged (RS) houses

- 39 lightly damaged (RR) houses

- 5 government offices affected

- 3 health facility units affected

- 6 public facility units affected

- 1 heavily damaged (RB) hotel

- 1 lightly damaged (RR) KDMP building

- 1 damaged educational facility unit

● Ngada Regency

- 537 damaged resident houses (assessment ongoing)

- 39 affected educational facility units (assessment ongoing)

- 7 affected road sections

- 12 government offices affected

- 14 health facility units affected

- 4 animal health facility units affected

- 12 places of worship affected

- 2 clean water public facility units affected

- 1 irrigation facility affected

- 1 heavily damaged (RB) Infantry Battalion HQ building

- 1 damaged Military Rayon Command (Koramil) building

● Sikka Regency

- 1 damaged Lorens Say Maumere terminal building

West Nusa Tenggara (NTB) Province

● Bima City

- 1 moderately damaged (RS) house

- 2 lightly damaged (RR) houses

- 1 affected Bulog warehouse

- 1 lightly damaged (RR) regional facility unit

● Bima Regency

- 1 lightly damaged (RR) house

- 1 moderately damaged (RS) house

- 1 heavily damaged (RB) house

- 1 lightly damaged (RR) District Head office

South Sulawesi Province

● Selayar Islands Regency

- 3 moderately damaged (RS) houses (assessment ongoing)

- 9 lightly damaged (RR) houses

- 1 heavily damaged (RB) house

➢ Actions Taken:

● BMKG (Meteorology, Climatology, and Geophysics Agency)

- Advised the public to remain calm and not be swayed by unverified rumors or information.

- Advised avoiding buildings that are cracked or damaged due to the earthquake.

- Ensured that official information is sourced solely from BMKG via verified channels, such as the @infoBMKG social media account, the websites www.bmkg.go.id or https://inatews.bmkg.go.id/web/detail?name=20260814081725&day=578, and the "infobmkg" or "wrs-bmkg" mobile apps.

● Regency/City BPBD (Regional Disaster Management Agency)

- Issued advisories to the public regarding the Tsunami Early Warning issued by BMKG.

- Directed coastal residents to self-evacuate to higher or safer ground.

- Coordinated with relevant agencies and district/village authorities in each area to conduct post-earthquake assessments and data collection.

- Sikka Regency BPBD provided assistance by setting up emergency tents and camp beds for patients at Dr. T.C. Hillers Regional General Hospital (RSUD) and St. Gabriel Kewapante Hospital.

➢ Status:

East Nusa Tenggara Province

● The province will declare an emergency response status for 14 days starting today; the draft decree establishing this status and the command post is currently being prepared and is scheduled for the Governor's signature (planned for tomorrow).

Manggarai Regency

● Manggarai Regent Decree No. 319 of 2026 regarding the Declaration of Emergency Response Status for the Tectonic Earthquake Disaster in the Regency. Manggarai Regency, 2026

For a period of 90 days, effective from August 15 to November 13, 2026

● Manggarai Regent Decree No. 320 of 2026 regarding the Establishment of the Tectonic Earthquake Emergency Response Command Post in Manggarai Regency, 2026, for a period of 90 days, effective from August 15 to November 13, 2026.

East Manggarai Regency

● East Manggarai Regent Decree No. HK/141/2026 regarding the Determination of Earthquake Emergency Alert Status in East Manggarai Regency, 2026, for a period of 90 days, effective from August 15 to September 4, 2026.

Ngada Regency

● Ngada Regent Decree No. 441/KEP/HK/2026 regarding the Determination of Earthquake Emergency Response Status in Ngada Regency, 2026, for a period of 30 days, effective from August 15 to September 15, 2026.

● Manggarai Regent Decree No. 442/KEP/HK/2026 regarding the Establishment of the Earthquake Emergency Response Command Post in Ngada Regency, 2026.

➢ Parties Involved:

● NTT Provincial Regional Disaster Management Agency (BPBD)

● National Agency for Disaster Countermeasure (BNPB) Jakarta

● Governor of NTT

● Meteorology, Climatology, and Geophysics Agency (BMKG)

● Regency/City Governments

● Nagekeo Regency BPBD

● Sikka Regency BPBD

● Ende Regency BPBD

● Ngada Regency BPBD

● Manggarai Regency BPBD

● East Manggarai Regency BPBD

● West Manggarai Regency BPBD

● Bima Regency BPBD, NTB Province

● Bima City BPBD, NTB Province

● Regency BPBD Selayar Islands, South Sulawesi Province

● BASARNAS (National Search and Rescue Agency)

● TNI (Indonesian National Armed Forces)

● Polri (Indonesian National Police)

● Volunteer groups

➢ Urgent Needs:

● Manggarai Regency:

- Refugee tents: 15 units

- Command post tents: 12 units

- Platoon tents: 20 units

- Rice: 30 tons

- Medicines: As needed

- Folding cots: 1,000 units

- Blankets: 1,000 pieces

- Mats: 1,000 pieces

- Kitchen kits: 500 sets

- Water storage tanks (Profil Tank type): 12 units (2,200-liter capacity)

- 5 kVA generators: 10 units

- Two-way radios (HT): 10 units

- Flashlights: 100 units

➢ Current Conditions:

East Nusa Tenggara (NTT) Province

● Nagekeo Regency

- Earthquake felt very strongly for ± 1 minute

- Most residents felt the quake and rushed out of their homes

- Nagekeo Regency BPBD (Regional Disaster Management Agency) coordinating with relevant stakeholders regarding the Tsunami Early Warning

- Nagekeo Regency BPBD coordinating with relevant agencies following the earthquake and managing the evacuation of coastal residents

● Sikka Regency

- Earthquake felt very strongly for ± 1 minute

- Most residents felt the quake and rushed out of their homes

- Sikka Regency BPBD coordinating with relevant stakeholders regarding the Tsunami Early Warning

- Sikka Regency BPBD coordinating with relevant agencies following the earthquake and managing the evacuation of coastal residents

● West Manggarai Regency

- Earthquake felt very strongly for ± 1 minute

- Most residents felt the quake and rushed out of their homes

- Regency BPBD... West Manggarai Regency is coordinating with relevant agencies regarding the Tsunami Early Warning

- The West Manggarai Regency Regional Disaster Management Agency (BPBD) is coordinating with relevant agencies following the earthquake and is evacuating residents located along the coast

West Nusa Tenggara (NTB) Province

● Bima City

- The earthquake was felt very strongly for approximately 1 minute

- Most residents felt the shaking and rushed out of their homes

- Bima City BPBD is coordinating with relevant agencies regarding the Tsunami Early Warning

- Bima City BPBD is coordinating with relevant agencies following the earthquake

South Sulawesi Province

● Jeneponto Regency

- The earthquake was felt quite strongly for approximately 10 seconds

- Most residents felt the shaking and rushed out of their homes

- Jeneponto Regency BPBD is coordinating with relevant agencies following the earthquake

and is evacuating residents located along the coast

● Selayar Islands Regency

- The earthquake was felt quite strongly for approximately 5 seconds

- Most residents felt the shaking and rushed out of their homes

- Selayar Islands Regency BPBD is coordinating with ...relevant agencies following the earthquake

● Maros Regency

- Earthquake felt as a weak tremor lasting ± 1 minute

- Maros Regency BPBD coordinating with relevant agencies following the earthquake

➢ Latest Status:

Sunday, August 16, 2026, at 00:00 WIB

● BPBD and teams are continuing data collection

● The Larantuka - Maumere land route remains connected, while the Ende - Nagekeo land route is cut off

● Based on sea-level observations in the affected areas, there is no longer any significant, dangerous rise in sea level; therefore, the Tsunami Early Warning was declared lifted at 07:31:30 WIB (Source: BMKG)

● Deceased victim evacuated to TC Hiler Hospital at 07:15 WITA

Manggarai Regency

● Field Hospital located in Reok District

Bima City

● General public situation is stable; field data collection and verification are ongoing to assess potential damage or other impacts caused by the earthquake

Bima Regency

● General public situation is stable

Nagekeo Regency

● Traffic congestion and power outages persist

Selayar Islands Regency, South Sulawesi Province

● 3 (three) evacuation sites established at:

1. Miantu’u - Pasimarannu District

2. Kalaotoa Village - Pasilambena District

3. Kayuadi Island - Takabonerate District

● Some evacuees remain at the evacuation sites due to trauma from the earthquake in 2021

Regency of... Sikka

● ± 1,326 displaced persons are concentrated at the Samador Sports Hall (GOR)

● ± 2,000 self-evacuated displaced persons are spread across 10 (ten) evacuation sites

➢ Documentation: Link

Sources: Head of Emergency & Logistics Division (BPBD Nagekeo Regency), Head of Division (BPBD West Manggarai Regency), Operations Control Center (Pusdalops)

BPBD Bima City, Pusdalops BPBD Jeneponto Regency, Head of Emergency & Logistics Division (BPBD Maros Regency), Pusdalops

BPBD Selayar Islands Regency, Secretary of BPBD Sikka Regency