On Thursday Morning a Shallow M5.4 Earthquake struck 110mi from Anchorage in The United States.

Written by Earthquakelist.org on October 30th, 2025. Last updated December 5th, 2025.

Under land 110 miles from Anchorage in The United States, a shallow and significant M5.4 earthquake occurred in the morning of Thursday October 30th, 2025. The USGS has indicated there is a potential risk at tsunami's following this earthquake.

Earthquake Summary

The earthquake struck on land in The United States, 110 miles (177 km) south of Anchorage in Alaska. The center of this earthquake had a very shallow depth of 15 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Oct 30, 2025 09:33AM (Anchorage Time) - Oct 30, 2025 17:33 Universal Time.
Location:	110 mi south of Anchorage, Alaska, The United States. Coordinates 59°37'51"N 150°13'58"W.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.4 Detected by 22 stations. Maximum Error Range ±0.041 .
Depth:	15 mi (24 km) A very shallow depth.
Max. Intensity:	V Moderate On the Modified Mercalli Scale.
Tsunami Risk:	Potential tsunami risk The USGS has indicated there is a potential risk at tsunami's following this earthquake. Always stay cautious - More info here.

Potential tsunami risk

DISCLAIMER: We strongly suggest to closely monitor advice from local authorities with regards to tsunami risks. Our analysis is based on automatically collected data from external sources, and these might contain mistakes. In addition, earthquakes can cause landslides that may lead to a tsunami, or be a followed by another, potentially stonger, earthquake.

There is a potential tsunami risk in the aftermath of this earthquake, immediately evacuate to higher grounds away from coastal areas and monitor advice from local authorities. The US Geographic Survey organization has indicated a potential risk for tsunami's following this earthquake.

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 (1 mi from the sea).	Not this earthquake. This earthquake had a magnitude of 5.4. Earthquakes of this strength are unlikely to trigger a tsunami.	This earthquake occurred at a depth of of 15 mi (24 km). Earthquakes this shallow could trigger a tsunami.

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 370 thousand people exposed to shaking

The USGS has published a report estimating the number of people exposed to this earthquake. Acoording to their analysis, roughly 370 thousand have been exposed to shaking at an MMI level of II or higher.

The highest earthquake impact level for this earthquake is IV, which corresponds with light shaking and likely no damage. Roughly 17,880 people are expected to be exposed to this level. The majority of people (roughly 350 thousand) live in an area exposed to level III, where weak shaking and probably no damage is expected.

People	MMI Level	Shaking	Damage
10	I	Not noticable	None
7,320	II	Very weak	None
346,000	III	Weak	Probably none
17,880	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 The United States . The closest significant population center near the earthquake is Anchorage in Alaska, The United States. Anchorage is located 110 miles (177 km) south of the epicenter. Anchorage experienced an earthquake intensity (MMI Scale) of roughly III. That level implies weak shaking and probably no damage.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place	Intensity (MMI)
110 mi (177 km) N from epicenter	Anchorage Alaska, The United States.	III Weak
119 mi (191 km) N from epicenter	Eagle River Alaska, The United States.	III Weak

Earthquake Intensity Map

The maximum intensity (MMI Scale) caused by this earthquake is V. The map below shows in which areas this earthquake was the most and least impactful. It is based on data from the US Geographic Survey.

I Not felt

II Weak

III Weak

IV Light

V Moderate

VI Strong

VII Very Strong

VIII Severe

IX Violent

X Extreme

Earthquake Intensity Map based on Shakemap Data provided by USGS.

5 Aftershocks detected

After this earthquake struck, 5 smaller aftershocks occurred. A 3.2 magnitude earthquake hit 1 day later 3 mi (6 km) west-northwest of this earthquake.

Before this earthquake struck, 1 smaller foreshock occurred. A 2.6 magnitude earthquake hit 1 day earlier nearby.

Overview of foreshocks and aftershocks

Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.
Classification	Magnitude	When	Where
Foreshock	M 2.6	1 day earlier Oct 28, 2025 10:14PM (Anchorage Time)	62 mi (99 km) NW from Main Shock.
Main Shock This Earthquake	M 5.4	Oct 30, 2025 09:33AM (Anchorage Time)	-
Aftershock	M 2.6	6 mins later Oct 30, 2025 09:38AM (Anchorage Time)	4 mi (6 km) WNW from Main Shock.
Aftershock	M 3.1	16 hrs later Oct 31, 2025 01:37AM (Anchorage Time)	6 mi (9 km) WNW from Main Shock.
Aftershock	M 3.2	1 day later Oct 31, 2025 10:26AM (Anchorage Time)	3 mi (6 km) WNW from Main Shock.
Aftershock	M 2.5	2 days later Oct 31, 2025 10:05PM (Anchorage Time)	5 mi (8 km) NW from Main Shock.
Aftershock	M 2.7	2 days later Oct 31, 2025 11:05PM (Anchorage Time)	4 mi (7 km) W 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.

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 3 years

Earthquakes of this strength occur quite regularly in the region. This is the strongest earthquake to hit since March 19th, 2023, when a 5.4 magnitude earthquake hit 59 mi (94 km) further west. An even stronger magnitude 7.1 earthquake struck on November 30th, 2018.

In total, 9 earthquakes with a magnitude of 5.4 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.

Sources

Last updated 05/12/25 02:08 (). This article contains currently available information about the earthquake and is automatically composed. We continue to update this article up to a few days after the earthquake occurred.