Every recorded earthquake within 30 km
Earthquakes near West Lake Sammamish, WA
No earthquake was likely felt in West Lake Sammamish in the 24 hours to 1:03 am PDT (08:03 UTC). The last one was M 4.2, 51 km (31 mi) WSW, at 2:05 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 9,329 felt reports to USGS.
M 2.5
Latest: 1:06 am PDT on 26 June 2026 · 26 km (16 mi) ENE of West Lake Sammamish, WA
The most recent earthquake of M2.5 or more near West Lake Sammamish was M 2.5, 26 km (16 mi) ENE of West Lake Sammamish, WA, at 1:06 am PDT on 26 June 2026, 17 km deep. 12 people reported feeling it to USGS. The estimated shaking in West Lake Sammamish was intensity II (weak), felt by some people at rest indoors. 12 smaller earthquakes have been recorded near West Lake Sammamish since; the newest is first in the list below.
No earthquake of M1.5 or more was recorded within 30 km (19 mi) of West Lake Sammamish in the last 24 hours.
- Last 24 hours
- 0
- Last 7 days
- 1
- Last 30 days
- 6 · an average 30 days here since 2016: 3.2
- Last 12 months
- 49 · largest M 3.0 on 24 February 2026
- Since 2016
- 422 earthquakes of M1.5 or more within 30 km
- Largest since 2016
- M 3.9 on 8 August 2023, 25 km (15 mi) E of West Lake Sammamish, WA
- Reported felt
- 145 of them have felt reports to USGS
- Nearest mapped fault
- Seattle fault, under 1 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
- 1.8 26 km (16 mi) SE of West Lake Sammamish, WA
- 1.6 29 km (18 mi) ESE of West Lake Sammamish, WA
- 2.1 25 km (16 mi) E of West Lake Sammamish, WA · felt by 1
- 2.4 27 km (17 mi) SE of West Lake Sammamish, WA · felt by 10
- 2.0 11 km (7 mi) SSE of West Lake Sammamish, WA
- 2.1 28 km (18 mi) SE of West Lake Sammamish, WA · felt by 2
- 2.1 23 km (14 mi) E of West Lake Sammamish, WA · felt by 3
- 1.6 20 km (12 mi) SSE of West Lake Sammamish, WA
- 1.5 27 km (17 mi) NNE of West Lake Sammamish, WA
- 1.5 10 km (6 mi) NE of West Lake Sammamish, WA
- 1.5 14 km (9 mi) WSW of West Lake Sammamish, WA
- 1.6 23 km (14 mi) NW of West Lake Sammamish, WA
- 2.5 26 km (16 mi) ENE of West Lake Sammamish, WA · felt by 12
- 1.8 28 km (18 mi) E of West Lake Sammamish, WA
- 1.9 25 km (15 mi) WSW of West Lake Sammamish, WA
- 1.5 29 km (18 mi) N of West Lake Sammamish, WA
- 2.1 22 km (14 mi) E of West Lake Sammamish, WA
- 1.8 23 km (14 mi) E of West Lake Sammamish, WA
- 1.7 10 km (6 mi) NW of West Lake Sammamish, WA
- 1.6 10 km (6 mi) NW of West Lake Sammamish, WA
- 1.9 19 km (12 mi) SE of West Lake Sammamish, WA
- 1.7 21 km (13 mi) E of West Lake Sammamish, WA
- 1.6 27 km (17 mi) NE of West Lake Sammamish, WA
- 1.6 29 km (18 mi) NNE of West Lake Sammamish, WA
- 1.6 22 km (14 mi) NE of West Lake Sammamish, WA
- 2.0 16 km (10 mi) SSW of West Lake Sammamish, WA · felt by 1
- 1.7 17 km (11 mi) SE of West Lake Sammamish, WA
- 1.7 19 km (12 mi) SE of West Lake Sammamish, WA
- 2.2 18 km (11 mi) SE of West Lake Sammamish, WA
- 1.8 25 km (16 mi) NW of West Lake Sammamish, WA
- 1.6 26 km (16 mi) E of West Lake Sammamish, WA
- 2.4 27 km (17 mi) E of West Lake Sammamish, WA · felt by 19
- 2.0 23 km (15 mi) E of West Lake Sammamish, WA · felt by 2
- 2.0 29 km (18 mi) NNE of West Lake Sammamish, WA
- 1.7 25 km (16 mi) E of West Lake Sammamish, WA
- 3.0 29 km (18 mi) N of West Lake Sammamish, WA · felt by 476
- 1.6 20 km (13 mi) ENE of West Lake Sammamish, WA
- 1.6 9 km (6 mi) NW of West Lake Sammamish, WA · felt by 1
- 1.7 27 km (17 mi) E of West Lake Sammamish, WA · felt by 1
- 3.0 12 km (8 mi) NE of West Lake Sammamish, WA · felt by 289
- 1.7 10 km (6 mi) NW of West Lake Sammamish, WA
- 1.9 14 km (9 mi) SSE of West Lake Sammamish, WA
- 1.7 25 km (16 mi) NW of West Lake Sammamish, WA
- 2.4 30 km (18 mi) SE of West Lake Sammamish, WA · felt by 7
- 1.7 29 km (18 mi) ESE of West Lake Sammamish, WA
- 1.5 14 km (8 mi) WSW of West Lake Sammamish, WA
- 1.7 13 km (8 mi) WSW of West Lake Sammamish, WA
- 1.5 6 km (4 mi) NW of West Lake Sammamish, WA
- 1.7 8 km (5 mi) W of West Lake Sammamish, WA
- 1.7 28 km (17 mi) NNE of West Lake Sammamish, 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 West Lake Sammamish time. Distances are from the town centre. Quakes USGS named after West Lake Sammamish are listed even when they are further out.
Show these earthquakes on your own site: a free card with the latest quakes near West Lake Sammamish, for a local news site, school or neighborhood page.
On the map
The white circle is West Lake Sammamish; dots are the 50 most recent earthquakes within 30 km. Map © OpenStreetMap contributors.
Estimated shaking in West Lake Sammamish
The strongest shaking in West Lake Sammamish from a quake since 2016 is estimated at intensity III (weak), from the M 3.9 on 8 August 2023, 25 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 West Lake Sammamish (est.) |
|---|---|---|---|
| M 3.9 | 25 km | III · Weak · felt by 1,585 | |
| M 3.1 | 17 km | II · Weak · felt by 257 | |
| M 3.5 | 26 km | II · Weak · felt by 1,316 | |
| M 3.4 | 25 km | II · Weak · felt by 1,044 | |
| M 3.2 | 22 km | II · Weak · felt by 565 |
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 West Lake Sammamish:
- 6.7 1 km ENE of Dash Point, Washington · 36 km SW of West Lake Sammamish
- 5.4 8 km NNE of Lake Marcel-Stillwater, Washington · 26 km NE of West Lake Sammamish
- 5.2 9 km NE of Lake Marcel-Stillwater, Washington · 28 km NE of West Lake Sammamish
- 5.0 4 km ENE of Machias, Washington · 48 km N of West Lake Sammamish
- 5.0 3 km WSW of Des Moines, Washington · 29 km SW of West Lake Sammamish
USGS ComCat, M5+ from 1900 to 2015. This is the record, not a forecast.
Nearest mapped faults
- Seattle fault, under 1 km from its surface trace
- Rattlesnake Mountain fault, 11 km from its surface trace
- Southern Whidbey Island fault, 13 km from its surface trace
USGS Quaternary Fault and Fold Database. Near is not the same as on.
Nearby towns
City of Sammamish 6 km · Newcastle 6 km · Klahanie 7 km · Sammamish 7 km · Issaquah 7 km · Bellevue 8 km · Mercer Island 9 km · East Renton Highlands 10 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 West Lake Sammamish, 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.