M1.5 earthquake 7 km SSW of Mad River, California
A magnitude 1.5 earthquake struck 7 km SSW of Mad River, California on Fri, May 22, 1981, 2:15 AM PDT (09:15 UTC), 27 km (17 mi) below the surface.
A larger quake followed: M4.6 23 km WSW of Weott, California. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (Md, duration), micro
- Magnitude from
- Northern California Seismic System
- Local time
- UTC
- 1981-05-22 09:15:41 UTC
- Depth
- 26.9 km (16.7 mi), shallow
- Epicenter
- 40.392° N, 123.538° W
- Region
- California
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 3.1 km horizontally, 1.4 km in depth
- Depth from
- From location
- Station coverage gap
- 273°, poorly surrounded by stations
- Stations used
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 161 in the 60 days after this one and 69 in the 30 days before it.
After
- 2.117 km SW of Mad River, California · 16570 days ago · 21 km deep · 12 km away
- 1.617 km ENE of Hydesville, California · 16570 days ago · 21 km deep · 41 km away
- 2.417 km SW of Mad River, California · 16569 days ago · 21 km deep · 12 km away
- 3.338 km SW of Ferndale, California · 16569 days ago · 27 km deep · 90 km away
- 2.83 km SSW of Scotia, California · 16568 days ago · 9 km deep · 50 km away
- 2.911 km S of Scotia, California · 16568 days ago · 12 km deep · 49 km away
- 1.914 km NE of Hydesville, California · 16567 days ago · 24 km deep · 44 km away
- 1.9Northern California · 16566 days ago · 22 km deep · 31 km away
- 3.523 km SSW of Ferndale, California · 16566 days ago · 27 km deep · 74 km away
- 2.224 km SW of Ferndale, California · 16566 days ago · 27 km deep · 78 km away
- 2.1near the coast of Northern California · 16565 days ago · 31 km deep · 76 km away
- 2.341 km SW of Ferndale, California · 16565 days ago · 21 km deep · 92 km away
- 2.015 km SSW of Ferndale, California · 16565 days ago · 28 km deep · 65 km away
- 2.633 km SW of Ferndale, California · 16565 days ago · 27 km deep · 83 km away
- 3.013 km W of Ruth, California · 16564 days ago · 22 km deep · 15 km away
- 2.239 km SW of Ferndale, California · 16563 days ago · 24 km deep · 90 km away
- 2.843 km SW of Ferndale, California · 16563 days ago · 21 km deep · 96 km away
- 2.936 km SW of Ferndale, California · 16563 days ago · 29 km deep · 86 km away
- 2.27 km E of Hyampom, California · 16562 days ago · 4 km deep · 30 km away
- 1.645 km SW of Ferndale, California · 16562 days ago · 18 km deep · 97 km away
- 3.711 km SW of Willow Creek, California · 16561 days ago · 28 km deep · 57 km away
- 2.322 km WSW of Weott, California · 16561 days ago · 1 km deep · 55 km away
- 1.616 km WNW of Samoa, California · 16560 days ago · 22 km deep · 89 km away
- 1.631 km SW of Ferndale, California · 16559 days ago · 34 km deep · 80 km away
- 2.225 km SW of Ferndale, California · 16559 days ago · 19 km deep · 78 km away
- 1.737 km SW of Ferndale, California · 16559 days ago · 35 km deep · 85 km away
- 2.225 km SSW of Ferndale, California · 16558 days ago · 27 km deep · 75 km away
- 2.342 km SW of Ferndale, California · 16558 days ago · 23 km deep · 94 km away
- 2.610 km WNW of Fields Landing, California · 16558 days ago · 25 km deep · 79 km away
- 2.236 km SW of Ferndale, California · 16557 days ago · 28 km deep · 84 km away
- 1.57 km WNW of McKinleyville, California · 16557 days ago · 20 km deep · 84 km away
- 2.637 km SW of Ferndale, California · 16556 days ago · 28 km deep · 88 km away
- 2.421 km WNW of Ferndale, California · 16555 days ago · 24 km deep · 87 km away
- 2.96 km NE of Miranda, California · 16554 days ago · 28 km deep · 23 km away
- 2.0Northern California · 16553 days ago · 20 km deep · 54 km away
- 1.718 km WSW of Scotia, California · 16553 days ago · 28 km deep · 63 km away
- 2.414 km WNW of Fields Landing, California · 16553 days ago · 24 km deep · 81 km away
- 2.314 km SSW of Ferndale, California · 16553 days ago · 23 km deep · 66 km away
- 1.633 km SSW of Ferndale, California · 16552 days ago · 24 km deep · 80 km away
- 1.513 km NE of Fieldbrook, California · 16552 days ago · 5 km deep · 78 km away
- 1.812 km WSW of Ferndale, California · 16551 days ago · 16 km deep · 74 km away
- 1.612 km N of Brooktrails, California · 16550 days ago · 8 km deep · 94 km away
- 2.22 km SSE of Benbow, California · 16550 days ago · 17 km deep · 43 km away
- 2.139 km SW of Ferndale, California · 16550 days ago · 28 km deep · 90 km away
- 2.48 km SSW of Scotia, California · 16549 days ago · 22 km deep · 50 km away
- 1.6near the coast of Northern California · 16549 days ago · 23 km deep · 82 km away
- 2.122 km SW of Ferndale, California · 16549 days ago · 22 km deep · 75 km away
- 2.513 km NW of Manila, California · 16549 days ago · 10 km deep · 87 km away
- 1.522 km WSW of Ferndale, California · 16549 days ago · 27 km deep · 84 km away
- 2.6near the coast of Northern California · 16549 days ago · 11 km deep · 86 km away
- 2.413 km NW of Manila, California · 16549 days ago · 11 km deep · 87 km away
- 2.014 km NW of Manila, California · 16549 days ago · 10 km deep · 87 km away
- 2.613 km NW of Manila, California · 16549 days ago · 12 km deep · 87 km away
- 3.112 km NW of Manila, California · 16549 days ago · 11 km deep · 86 km away
- 1.616 km NW of Manila, California · 16549 days ago · 9 km deep · 90 km away
- 2.414 km NW of Manila, California · 16549 days ago · 9 km deep · 88 km away
- 1.915 km NW of Manila, California · 16548 days ago · 11 km deep · 88 km away
- 1.65 km NW of Manila, California · 16548 days ago · 1 km deep · 79 km away
- 2.217 km SSW of Ferndale, California · 16547 days ago · 18 km deep · 65 km away
- 1.516 km SSW of Ferndale, California · 16547 days ago · 19 km deep · 66 km away
The first 60 of 161.
Before
- 2.216 km SW of Mad River, California · 16570 days ago · 22 km deep · 11 km away
- 1.816 km NE of Miranda, California · 16571 days ago · 20 km deep · 14 km away
- 2.917 km SW of Mad River, California · 16571 days ago · 22 km deep · 12 km away
- 2.916 km SW of Mad River, California · 16571 days ago · 21 km deep · 11 km away
- 1.59 km SSE of Laytonville, California · 16572 days ago · 7 km deep · 88 km away
- 3.4Northern California · 16573 days ago · 41 km deep · 58 km away
- 2.23 km NNW of Redway, California · 16574 days ago · 17 km deep · 37 km away
- 2.47 km NNW of Manila, California · 16574 days ago · 6 km deep · 80 km away
- 2.12 km NW of Willow Creek, California · 16574 days ago · 5 km deep · 63 km away
- 3.339 km SW of Ferndale, California · 16574 days ago · 24 km deep · 90 km away
- 1.88 km WNW of Indianola, California · 16575 days ago · 4 km deep · 75 km away
- 2.911 km W of Indianola, California · 16576 days ago · 11 km deep · 78 km away
- 1.811 km W of Indianola, California · 16576 days ago · 12 km deep · 78 km away
- 2.214 km WSW of Trinidad, California · 16576 days ago · 5 km deep · 94 km away
- 1.634 km SW of Ferndale, California · 16576 days ago · 23 km deep · 82 km away
- 1.73 km W of Scotia, California · 16577 days ago · 20 km deep · 52 km away
- 1.71 km NE of Humboldt Hill, California · 16577 days ago · 1 km deep · 66 km away
- 2.825 km SW of Ferndale, California · 16577 days ago · 27 km deep · 81 km away
- 1.625 km SW of Scotia, California · 16577 days ago · 29 km deep · 69 km away
- 2.425 km SSW of Ferndale, California · 16577 days ago · 32 km deep · 72 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event nc1063897. Read Sat, Oct 3, 2026, 9:20 AM UTC.