In the South Pacific Ocean 179 kilometer from Gisborne, New Zealand, a shallow and significant MAG-5.8 earthquake occurred in the morning of Thursday November 28th, 2024. Around 60 thousand people have been exposed to shaking.
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Earthquake Summary
This earthquake hit under water in the South Pacific Ocean, 125 kilometers (78 mi) off the coast of New Zealand, 179 kilometer north-east of Gisborne. The center of this earthquake had a very shallow depth of 19 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.
Date and Time: | Nov 28, 2024 11:03 (Auckland Time) - Nov 27, 2024 22:03 Universal Time. |
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Location: | 179 km NE of Gisborne, New Zealand. Coordinates 37°44'25"S 179°41'18"E. |
Map: | Map of area around epicenter. Click to open in Google Maps. |
Magnitude: | MAG 5.8 Detected by 46 stations. Maximum Error Range ±0.046 . |
Depth: | 19 km (12 mi) A very shallow depth. |
Max. Intensity: | IV
Light On the Modified Mercalli Scale. |
Tsunami Risk: | Low tsunami risk Earthquakes under MAG-6.5 do not usually cause tsunami's. Always stay cautious - More info here. |
Minimal impact predicted
Based on scientific estimates by the US Geographic Survey (USGS), the risk of high fatalities for this earthquake is classified at level GREEN (low). They expect an 69% likelyhood of between 0 and 1 fatalities, and a 98% chance that the number of fatalities falls no higher than 10.
The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 million US Dollars in economic damage and impact, and a 96% chance that the economic impact of this earthquake falls no higher than 10 million USD.
Roughly 60 thousand people exposed to shaking
This earthquake may have been felt by around 60 thousand people. That is the expected population size of the area exposed to a level of shaking of II or higher on the Modified Mercalli scale according to the USGS.
Weak shaking and probably no damage may have been experienced by an estimated 46,590 people. At III, it is the highest MMI level this earthquake has caused. All exposure to shaking was within the borders of New Zealand .
People | MMI Level | Shaking | Damage |
---|---|---|---|
0 | I |
Not noticable | None |
18,310 | II |
Very weak | None |
46,590 | III |
Weak | Probably none |
0 | IV |
Light | Likely none |
0 | V |
Moderate | Very light |
0 | VI |
Strong | Light |
0 | VII |
Very Strong | Moderate |
0 | VIII |
Severe | Moderate to heavy |
0 | IX |
Violent | Heavy |
0 | X |
Extreme | Very heavy |
Nearby towns and cities
This earthquake may have been felt in New Zealand . Gisborne in Gisborne, New Zealand is the nearest significant place from the epicenter. The earthquake occurred 179 kilometer (111 mi) north-east of Gisborne. The intensity of shaking and damage in Gisborne is estimated to be around level III on the Modified Mercalli Intensity scale (weak shaking, probably no damage).
The table below provides an overview of all places in proximity of today's earthquake. Where available, the estimated intensity on the Modified Mercalli Intensity Scale in each place is included. Places where this information is omitted likely experienced little impact.
Overview of nearby places
Distance | Place | Intensity (MMI) |
---|---|---|
179 km (111 mi) SW from epicenter |
Gisborne Gisborne, New Zealand. |
III
Weak |
239 km (149 mi) W from epicenter |
Whakatane Bay of Plenty, New Zealand. |
|
305 km (190 mi) W from epicenter |
Rotorua Bay of Plenty, New Zealand. |
|
310 km (193 mi) W from epicenter |
Tauranga Bay of Plenty, New Zealand. |
|
310 km (193 mi) SW from epicenter |
Napier Hawke's Bay, New Zealand. |
|
317 km (197 mi) SW from epicenter |
Taradale Hawke's Bay, New Zealand. |
|
324 km (201 mi) SW from epicenter |
Hastings Hawke's Bay, New Zealand. |
|
332 km (206 mi) WSW from epicenter |
Taupo Waikato, New Zealand. |
|
373 km (232 mi) W from epicenter |
Cambridge Waikato, New Zealand. |
|
387 km (240 mi) W from epicenter |
Hamilton Waikato, New Zealand. |
Earthquake Intensity Map
The intensity in shaking and damage by this earthquake is illustrated through the map below. The highest intensity measured for this earthquake is III.
Shaking reported by 6 people
People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 6 people have reported shaking in 4 places, all within New Zealand.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.
Places with most reports:
- Gisborne, Gisborne, New Zealand: 2 people.
- Ruatoria, Gisborne, New Zealand: 2 people.
- Te Kaha, Bay of Plenty, New Zealand: 1 person.
- Whakatane, Bay of Plenty, New Zealand: 1 person.
4 Aftershocks detected
This main shock was followed by 4 smaller aftershocks. A 3.1 magnitude earthquake hit 2 days later 21 km (13 mi) east-northeast of this earthquake.
Overview of foreshocks and aftershocks
Classification | Magnitude | When | Where |
---|---|---|---|
Main Shock This Earthquake |
M 5.8 |
Nov 28, 2024 11:03 (Auckland Time) | - |
Aftershock | M 3.1 |
18 mins later Nov 28, 2024 11:21 (Auckland Time) | 10 km (6 mi) NNE from Main Shock. |
Aftershock | M 3.0 |
1 day later Nov 29, 2024 21:02 (Auckland Time) | 12 km (7 mi) E from Main Shock. |
Aftershock | M 3.1 |
1 day later Nov 29, 2024 22:14 (Auckland Time) | 10 km (6 mi) N from Main Shock. |
Aftershock | M 3.1 |
2 days later Nov 30, 2024 18:00 (Auckland Time) | 21 km (13 mi) ENE from Main Shock. |
More earthquakes coming?
Earthquakes can create aftershocks. These are generally at least 1 magnitude lower than any main shock, and as time passes the chance and strength of aftershocks decreases.
In only six percent of cases, significant earthquakes are followed by a larger main shock, making the current earthquake a foreshock. While the chance of this happening is not so large, it is adviced to maintain cautiousness in the hours and days following a major earthquake.
Read: How to Stay Safe during an Earthquake (cdc.gov).This is the strongest earthquake in 4 years
Earthquakes of this strength occur quite regularly in the region. This is the strongest earthquake to hit since April 5th, 2021, when a 6.1 magnitude earthquake hit 32 km (20 mi) further north. An even stronger magnitude 7.3 earthquake struck on March 4th, 2021.
In total, 10 earthquakes with a magnitude of 5.8 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 year.
Low tsunami risk
Based on early data it appears this earthquake was not strong enough (lower than MAG-6.5) to be likely to cause destructive tsunami's. However this earthquake appeared to have hit at a shallow depth under sea, so 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 under the sea. | Not this earthquake. This earthquake had a magnitude of 5.8. Earthquakes of this strength are unlikely to trigger a tsunami. |
This earthquake occurred at a depth of of 19 km (12 mi). Earthquakes this shallow could trigger a tsunami. |
Sources
Last updated 02/12/24 21:28 (). 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.