Around noon of Wednesday June 17th, 2026, a significant Magnitude 5.1 earthquake hit under land 99 kilometer from Waingapu in Indonesia.
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Earthquake Summary
The earthquake struck on land in Indonesia, 99 kilometer (62 mi) west of Waingapu in East Nusa Tenggara. The center of this earthquake had a quite shallow depth of 35 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.
| Date and Time: | Jun 17, 2026 11:44 (Makassar Time) - Jun 17, 2026 03:44 Universal Time. |
|---|---|
| Location: | 99 km west of Waingapu, East Nusa Tenggara, Indonesia. Coordinates 9°37'40"S 119°21'45"E. |
| Map: |  Map of area around epicenter. Click to open in Google Maps. |
| Magnitude: | MAG 5.1 Detected by 25 stations. Maximum Error Range ±0.114 . |
| Depth: | 35 km (22 mi) A quite shallow depth. |
| Tsunami Risk: | Tsunami very unlikely While this was a shallow earthquake in a coastal area, it appears to have occurred under land (15 km from the sea) with a magnitude that is usually not strong enough to cause tsunami's. Always stay cautious - More info here. |
Nearby towns and cities
This earthquake may have been felt in Indonesia . Waingapu in East Nusa Tenggara, Indonesia is the nearest significant place from the epicenter. The earthquake occurred 99 kilometer (62 mi) west of Waingapu.
An overview of nearby towns and cities is available in the overview below.
Overview of nearby places
| Distance | Place |
|---|---|
| 99 km (62 mi) E from epicenter |
Waingapu East Nusa Tenggara, Indonesia. |
| 138 km (86 mi) NE from epicenter |
Labuan Bajo East Nusa Tenggara, Indonesia. |
| 147 km (91 mi) NW from epicenter |
Bima West Nusa Tenggara, Indonesia. |
| 156 km (97 mi) NW from epicenter |
Dompu West Nusa Tenggara, Indonesia. |
| 166 km (103 mi) NE from epicenter |
Ruteng East Nusa Tenggara, Indonesia. |
| 248 km (154 mi) NW from epicenter |
Sumbawa Besar West Nusa Tenggara, Indonesia. |
| 267 km (166 mi) E from epicenter |
Ende East Nusa Tenggara, Indonesia. |
19 Aftershocks detected
This main shock was followed by 19 smaller aftershocks. Just 35 mins after this main shock, an earthquake measuring MAG-4.2 was detected 13 km (8 mi) north-east of this earthquake.
This main shock was prefaced by 5 smaller foreshocks. Roughly 2 days before this earthquake, a foreshock measuring MAG-4.6 was detected nearby this earthquake.
Overview of foreshocks and aftershocks
| Classification | Magnitude | When | Where |
|---|---|---|---|
| Foreshock | M 4.1 |
3 days earlier Jun 14, 2026 18:48 (Makassar Time) | 56 km (35 mi) N from Main Shock. |
| Foreshock | M 3.1 |
3 days earlier Jun 14, 2026 22:51 (Makassar Time) | 57 km (35 mi) N from Main Shock. |
| Foreshock | M 4.6 |
2 days earlier Jun 15, 2026 02:30 (Makassar Time) | 58 km (36 mi) SW from Main Shock. |
| Foreshock | M 2.8 |
2 days earlier Jun 15, 2026 18:50 (Makassar Time) | 22 km (14 mi) W from Main Shock. |
| Foreshock | M 4.0 |
3 hrs earlier Jun 17, 2026 09:08 (Makassar Time) | 10 km (6 mi) E from Main Shock. |
| Main Shock This Earthquake |
M 5.1 |
Jun 17, 2026 11:44 (Makassar Time) | - |
| Aftershock | M 3.3 |
5 mins later Jun 17, 2026 11:48 (Makassar Time) | 11 km (7 mi) E from Main Shock. |
| Aftershock | M 3.2 |
6 mins later Jun 17, 2026 11:49 (Makassar Time) | 10 km (6 mi) E from Main Shock. |
| Aftershock | M 3.1 |
7 mins later Jun 17, 2026 11:51 (Makassar Time) | 10 km (6 mi) E from Main Shock. |
| Aftershock | M 3.0 |
9 mins later Jun 17, 2026 11:53 (Makassar Time) | 12 km (7 mi) E from Main Shock. |
| Aftershock | M 2.5 |
13 mins later Jun 17, 2026 11:57 (Makassar Time) | 9 km (5 mi) E from Main Shock. |
| Aftershock | M 2.7 |
24 mins later Jun 17, 2026 12:08 (Makassar Time) | 4 km (2.7 mi) E from Main Shock. |
| Aftershock | M 2.5 |
28 mins later Jun 17, 2026 12:12 (Makassar Time) | 8 km (5 mi) E from Main Shock. |
| Aftershock | M 2.5 |
34 mins later Jun 17, 2026 12:18 (Makassar Time) | 39 km (24 mi) NE from Main Shock. |
| Aftershock | M 4.2 |
35 mins later Jun 17, 2026 12:19 (Makassar Time) | 13 km (8 mi) NE from Main Shock. |
| Aftershock | M 2.5 |
52 mins later Jun 17, 2026 12:36 (Makassar Time) | 22 km (13 mi) S from Main Shock. |
| Aftershock | M 2.5 |
53 mins later Jun 17, 2026 12:37 (Makassar Time) | 11 km (7 mi) SE from Main Shock. |
| Aftershock | M 2.6 |
56 mins later Jun 17, 2026 12:40 (Makassar Time) | 9 km (5 mi) E from Main Shock. |
| Aftershock | M 2.5 |
2 hrs later Jun 17, 2026 13:38 (Makassar Time) | 23 km (14 mi) SE from Main Shock. |
| Aftershock | M 2.6 |
6 hrs later Jun 17, 2026 17:35 (Makassar Time) | 13 km (8 mi) E from Main Shock. |
| Aftershock | M 2.9 |
7 hrs later Jun 17, 2026 18:32 (Makassar Time) | 23 km (14 mi) E from Main Shock. |
| Aftershock | M 3.0 |
9 hrs later Jun 17, 2026 21:11 (Makassar Time) | 9 km (5 mi) E from Main Shock. |
| Aftershock | M 2.8 |
10 hrs later Jun 17, 2026 22:09 (Makassar Time) | 11 km (7 mi) E from Main Shock. |
| Aftershock | M 2.9 |
12 hrs later Jun 17, 2026 23:44 (Makassar Time) | 12 km (7 mi) NE from Main Shock. |
| Aftershock | M 2.7 |
13 hrs later Jun 18, 2026 00:46 (Makassar Time) | 9 km (6 mi) E from Main Shock. |
More earthquakes coming?
The risk of aftershocks decreases rapidly over time. Usually, aftershocks are at least one order of magnitude lower than a main shock.
The chance that a significant earthquake like this one is followed by an even larger earthquake is not so large. On average, scientists estimate a 94% chance that a major earthquake will not be followed by an even larger one. It is still adviced to be aware of this risk
Read: How to Stay Safe during an Earthquake (cdc.gov).Earthquakes like this happen often in the region
Earthquakes of this strength are very common in the region. This is the strongest earthquake to hit since May 20th, 2026, when a 5.2 magnitude earthquake hit 160 km (99 mi) further north. An even stronger magnitude 6.5 earthquake struck on August 17th, 2018.
In total, 41 earthquakes with a magnitude of 5.1 or higher have been registered within 300km (186 mi) of this epicenter in the past 10 years. This comes down to an average of once every 3 months.
Tsunami very unlikely
While MAG-6.5+ earthquakes may cause tsunami's, it appears that the epicenter of this earthquake hit under land. In addition, the reported depth is deeper than 100km, making the risk of a tsunami even less likely. However always stay cautious and monitor advice from local authorities.
Tsunami Risk Factors
| Factor | Under Sea? | MAG-6.5 or stronger? | Shallow depth? |
|---|---|---|---|
| Explanation | Almost all tsunami's are caused by earthquakes with their epicenter under sea or very near the sea. However stay cautious in coastal areas as earthquakes on land may cause landslides into sea, potentially still causing a local tsunami. | Under MAG 6.5: Very unlikely to cause a tsunami. MAG 6.5 to 7.5: Destructive tsunami's do occur, but are uncommon. Likely to observe small sea level changes. MAG 7.6+: Earthquakes with these magnitudes might produce destructive tsunami's. |
Most destructive tsunami's are caused by shallow earthquakes with a depth between 0 and 100km under the surface of the earth. Deeper tsunami's are unlikely to displace to ocean floor. |
| This Earthquake | This earthquake appears to have struck on land near a coastal area (15 km from the sea). | Not this earthquake. This earthquake had a magnitude of 5.1. Earthquakes of this strength are unlikely to trigger a tsunami. |
This earthquake occurred at a depth of of 35 km (22 mi). Earthquakes this shallow could trigger a tsunami. |
Sources
Last updated 17/06/26 18:18 (). As more information on this earthquake becomes available this article will be updated. This article is automatically composed based on data originating from multiple sources.
- US Geographic Society (USGS): Earthquake us7000stk6
- European-Mediterranean Seismological Centre (EMSC): Earthquake 20260617_0000078
- Geonames.org: World Cities Database
- Google Maps: Static API
- Earthquakelist.org: Historic Earthquakes Database
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