M1.8 earthquake 75 km SSW of Hawaiian Paradise Park, United States

A magnitude 1.8 earthquake struck 75 km SSW of Hawaiian Paradise Park, United States at 02:02 local time (12:02 UTC) on 28 Oct 2026, at a depth of 17 km, according to USGS. The solution is preliminary and may be revised.

Data: USGS · updated 2026-10-28 12:06 UTC · automatic solution

Magnitude: 1.8micro
duration magnitude (md)
Depth: 17 km
Status: Automatic
Origin time: 2026-10-28 12:02:43 UTC; Local: 28 Oct 2026, 02:02:43 (Pacific/Honolulu)
Epicentre: 18.938° N, 155.170° W

Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map

Nearby places

Distance and estimated shaking at nearby places
Place	Distance	Est. shaking
Hawaiian Paradise ParkHawaii, United States · pop. 11,404	75 km	INot felt
HiloHawaii, United States · pop. 43,263	88 km	INot felt
HonoluluHawaii, United States · pop. 350,964	385 km	INot felt

Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more.

Every agency's solution

Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS · HV.

Agency	Magnitude	Depth	Epicentre	Time offset	Status
USGS · HVheadlineHawaiian Volcano Observatory via U.S. Geological Survey	1.8 md	17 km	18.94° N, 155.17° W	–	Automatic

How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 8 kg of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 17 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

Compare M1.8 with M1.0

M1.8 releases about 16× the energy of M1.0, and its waves are about 6.3× taller on a seismogram. Energy: 8 kg of TNT vs 477 g of TNT.

Each square is the energy of one M1.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

18 later earthquakes within 30 km; the largest was M2.6 13 h ago. 14 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.8

18 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).

Aftershocks
Time after mainshock (hours)	Magnitude	Depth (km)
3.10	1.8	28
29.13	1.8	30
52.55	2.4	44
55.90	1.9	28
70.79	1.9	32
71.83	2.1	30
86.96	1.8	46
86.97	2.0	52
90.49	1.9	32
191.31	1.7	31
212.17	1.7	33
233.68	2.3	38
240.99	1.9	17
265.20	1.9	37
268.82	1.8	31
281.25	2.0	40
310.88	2.1	31
360.79	2.6	28

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

Event id hv75064881. First recorded here 28 Oct 2026, 12:07:55 UTC. Solutions: USGS · HV (usgs:hv75064881). Cite as: SeismoAtlas, “M1.8 earthquake 75 km SSW of Hawaiian Paradise Park, United States”, https://seismoatlas.com/earthquake/hv75064881-m1-8-earthquake-75-km-ssw-of-hawaiian-paradise-park-united-states, data from USGS.

JSON: /api/v1/events/hv75064881. SeismoAtlas is not an official warning service.