Every recorded earthquake within 30 km
Earthquakes near Alderton, WA
No earthquake was likely felt in Alderton in the 24 hours to 3:00 am PDT (10:00 UTC). The last one was M 4.2, 45 km (28 mi) NW, at 2:05 pm PDT on 29 September 2026, estimated intensity III (weak) in town; 9,329 felt reports to USGS.
M 2.5
Latest: 4:59 pm PDT on 24 October 2025 · 18 km (11 mi) E of Alderton, WA
The most recent earthquake of M2.5 or more near Alderton was M 2.5, 18 km (11 mi) E of Alderton, WA, at 4:59 pm PDT on 24 October 2025, 18 km deep. 3 people reported feeling it to USGS. The estimated shaking in Alderton was intensity II (weak), felt by some people at rest indoors. 28 smaller earthquakes have been recorded near Alderton since; the newest is first in the list below.
No earthquake of M1.5 or more was recorded within 30 km (19 mi) of Alderton in the last 24 hours.
- Last 24 hours
- 0
- Last 7 days
- 2
- Last 30 days
- 3 · an average 30 days here since 2016: 1.8
- Last 12 months
- 30 · largest M 2.5 on 24 October 2025
- Since 2016
- 232 earthquakes of M1.5 or more within 30 km
- Largest since 2016
- M 3.4 on 22 February 2025, 14 km (8 mi) NNE of Alderton, WA
- Reported felt
- 65 of them have felt reports to USGS
- Nearest mapped fault
- Tacoma fault, 8 km from its surface trace
USGS · feed checked · newest earthquake in our database · this page · counts are earthquakes of M1.5 or more within 30 km (19 mi) of the town centre; shaking is estimated for the town centre with the intensity equation USGS Did You Feel It? uses
If you felt one
- Was that an earthquake? — checks what was recorded near you in the last hour
- Report what you felt to USGS — reports go to USGS, not to us, and they are what produces the intensity maps
- Expect aftershocks, and be ready to Drop, Cover, and Hold On if you feel one; if you are in a damaged building, go outside and move away from it (Ready.gov, FEMA; what to do during and after an earthquake)
- Near the coast, go inland or to higher ground as soon as strong shaking stops (Ready.gov); official warnings are on Tsunami.gov
- Earthquakes in Washington — with the state's activity score
QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.
The last 30 days
The latest 50
- 1.6 26 km (16 mi) ESE of Alderton, WA
- 1.7 30 km (18 mi) E of Alderton, WA
- 2.1 17 km (11 mi) S of Alderton, WA
- 1.8 23 km (14 mi) S of Alderton, WA
- 1.6 30 km (18 mi) NNE of Alderton, WA
- 1.9 12 km (8 mi) NNE of Alderton, WA
- 1.7 26 km (16 mi) E of Alderton, WA
- 1.7 22 km (14 mi) S of Alderton, WA
- 1.6 18 km (11 mi) E of Alderton, WA
- 1.6 22 km (14 mi) S of Alderton, WA
- 1.6 12 km (8 mi) NE of Alderton, WA
- 1.7 17 km (11 mi) WNW of Alderton, WA
- 1.5 22 km (14 mi) S of Alderton, WA
- 2.0 14 km (9 mi) SSE of Alderton, WA · felt by 6
- 1.7 22 km (14 mi) S of Alderton, WA
- 1.5 28 km (18 mi) E of Alderton, WA
- 1.5 20 km (12 mi) S of Alderton, WA
- 1.6 22 km (13 mi) S of Alderton, WA
- 1.6 12 km (8 mi) NNW of Alderton, WA
- 1.7 27 km (17 mi) NW of Alderton, WA
- 1.6 21 km (13 mi) S of Alderton, WA
- 1.5 21 km (13 mi) S of Alderton, WA
- 1.8 27 km (17 mi) SE of Alderton, WA
- 1.5 21 km (13 mi) NW of Alderton, WA · felt by 1
- 1.6 25 km (16 mi) E of Alderton, WA
- 1.5 23 km (14 mi) NNW of Alderton, WA
- 1.7 22 km (14 mi) S of Alderton, WA
- 2.2 18 km (11 mi) E of Alderton, WA
- 2.5 18 km (11 mi) E of Alderton, WA · felt by 3
- 1.8 18 km (11 mi) E of Alderton, WA
- 1.5 21 km (13 mi) S of Alderton, WA
- 2.2 22 km (14 mi) E of Alderton, WA
- 1.6 22 km (13 mi) S of Alderton, WA
- 1.5 17 km (10 mi) SE of Alderton, WA
- 1.9 29 km (18 mi) NNE of Alderton, WA
- 1.6 21 km (13 mi) E of Alderton, WA · felt by 1
- 1.5 25 km (15 mi) NNW of Alderton, WA
- 1.8 22 km (14 mi) S of Alderton, WA
- 1.6 17 km (11 mi) ESE of Alderton, WA
- 1.5 22 km (14 mi) S of Alderton, WA
- 2.1 22 km (14 mi) E of Alderton, WA
- 1.6 21 km (13 mi) S of Alderton, WA
- 1.7 23 km (14 mi) S of Alderton, WA
- 1.7 24 km (15 mi) NNW of Alderton, WA
- 1.6 22 km (14 mi) S of Alderton, WA
- 1.8 29 km (18 mi) NNE of Alderton, WA
- 1.8 24 km (15 mi) ESE of Alderton, WA · felt by 1
- 1.8 22 km (14 mi) S of Alderton, WA
- 1.9 22 km (14 mi) S of Alderton, WA
- 1.8 18 km (11 mi) E of Alderton, WA
From the QuakeIndex database, which reads the USGS feed every 30 seconds and holds the USGS catalogue for the US from 2016 (M1.5+). Times are Alderton time. Distances are from the town centre. Quakes USGS named after Alderton are listed even when they are further out.
Show these earthquakes on your own site: a free card with the latest quakes near Alderton, for a local news site, school or neighborhood page.
On the map
The white circle is Alderton; dots are the 50 most recent earthquakes within 30 km. Map © OpenStreetMap contributors.
Estimated shaking in Alderton
The strongest shaking in Alderton from a quake since 2016 is estimated at intensity II (weak), from the M 3.4 on 22 February 2025, 14 km away. Intensity II and III are felt by some people at rest indoors; IV by most people indoors; V and above wakes sleepers and moves objects.
| Magnitude | When | Distance | Shaking in Alderton (est.) |
|---|---|---|---|
| M 3.4 | 14 km | II · Weak · felt by 1,640 | |
| M 3.0 | 14 km | II · Weak · felt by 18 | |
| M 3.2 | 26 km | II · Weak · felt by 309 | |
| M 3.2 | 30 km | II · Weak · felt by 1,291 | |
| M 3.1 | 22 km | II · Weak · felt by 259 |
An estimate for the town centre from magnitude, depth and distance, with the intensity equation USGS Did You Feel It? uses (Atkinson & Wald, 2007), on the Modified Mercalli scale. All 5 reach intensity II or more in town, where people at rest start to notice. Ground conditions change it street by street. It describes the past, not a hazard.
Before 2016
The USGS record since 1900 lists 5 earthquakes of M5 or more within 50 km of Alderton:
- 6.8 The 2001 Nisqually, Washington Earthquake · 38 km W of Alderton
- 6.7 4 km WNW of Roy, Washington · 33 km WSW of Alderton
- 6.7 1 km ENE of Dash Point, Washington · 22 km NW of Alderton
- 6.1 Puget Sound region, Washington · 47 km WNW of Alderton
- 5.0 3 km WSW of Des Moines, Washington · 26 km NNW of Alderton
USGS ComCat, M5+ from 1900 to 2015. This is the record, not a forecast.
Nearest mapped faults
- Tacoma fault, 8 km from its surface trace
- Seattle fault, 37 km from its surface trace
- Rattlesnake Mountain fault, 40 km from its surface trace
USGS Quaternary Fault and Fold Database. Near is not the same as on.
Nearby towns
Bonney Lake 3 km · South Hill 4 km · Puyallup 5 km · Prairie Ridge 7 km · Lakeland South 13 km · Graham 14 km · Auburn 15 km
Be ready
Earthquakes cannot be predicted, here or anywhere, so the useful step is the one taken beforehand. The advice below is from the agencies responsible for it.
- Ready.gov: earthquakes (FEMA) — what to do before, during and after, including Drop, Cover, and Hold On
- Build a kit (FEMA) — water, food and supplies for several days; our summary
- USGS: preparedness — the hazard behind the advice, from the agency that records every quake on this page
- The Great ShakeOut — the yearly earthquake drill, with material for homes, schools and workplaces
- ShakeAlert covers Alderton, WA: alerts reach phones through Wireless Emergency Alerts and the MyShake app, seconds before shaking arrives
- Tsunami.gov (NOAA) — the official tsunami warnings for the coast; a quake page here never stands in for one
QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.