Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Issaquah, WA
No earthquake was likely felt in Issaquah in the 24 hours to 6:49 pm PST (02:49 UTC). The last one was M 4.2, 54 km (33 mi) WSW, at 2:05 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 9,329 felt reports to USGS. Every earthquake near Issaquah
This page: a magnitude 1.6 earthquake was recorded 4 km (2 mi) south-southeast of Issaquah, WA, at 6:40 am PST on 18 November 2024 (14:40 UTC), 8.3 km deep.
USGS: 3 km SSE of Issaquah, Washington
29 km (18 mi) ESE of Seattle, WA · 11 km (7 mi) S of Sammamish, WA
- When
- 6:40 am PST on 18 November 2024 ()
- Where
- 4 km (2 mi) south-southeast of Issaquah, WA · earthquakes near Issaquah
- Magnitude
- M 1.6 (ml)
- Depth
- 8.3 km below the surface
- Felt
- no reports yet
- Nearest
- King County, 14 km E
- Nearest mapped fault
- Seattle fault, 3 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 721 days ago
Earthquake alerts for Issaquah, WA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 8 km (5 mi) from the epicentre. In Issaquah, 4 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Likely felt in: Issaquah 4 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 8.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
- Around the size people start to feel M 3.0 120× the energy of this one
- This earthquake M 1.6 about 8.1 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
The largest earthquake within 50 km since 2016 was M 4.6 on 2019-07-12 — about 28,000 times the energy of this one.
Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:
- 6.7 1 km ENE of Dash Point, Washington · 36 km WSW of this epicentre
- 5.4 8 km NNE of Lake Marcel-Stillwater, Washington · 31 km NNE of this epicentre
- 5.2 9 km NE of Lake Marcel-Stillwater, Washington · 31 km NNE of this epicentre
- 5.0 3 km WSW of Des Moines, Washington · 29 km WSW of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 47.5010, -122.0142. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| King County, WA | 14 km (8 mi) | E | earthquakes near King County |
| Kitsap County, WA | 50 km (31 mi) | WNW | earthquakes near Kitsap County |
| Pierce County, WA | 51 km (32 mi) | SSW | earthquakes near Pierce County |
| Snohomish County, WA | 64 km (40 mi) | NNE | earthquakes near Snohomish County |
| Thurston County, WA | 88 km (55 mi) | SW | earthquakes near Thurston County |
| Island County, WA | 88 km (55 mi) | NNW | earthquakes near Island County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 1.7 7 km ENE of Manchester, Washington
- 2.1 4 km E of Enumclaw, Washington
- 1.5 2 km ENE of Woods Creek, Washington
- 1.9 7 km S of Woods Creek, Washington
- 1.7 2 km NE of Echo Lake, Washington
- 1.7 3 km NNE of Dash Point, Washington
- 2.8 4 km N of Echo Lake, Washington
- 1.6 1 km NNW of Boulevard Park, Washington
- 2.1 0 km NNW of Esperance, Washington
- 1.8 1 km NNW of Maple Valley, Washington
- 1.6 1 km SW of Burien, Washington
- 1.8 8 km ESE of Carbonado, Washington
- 1.8 8 km NE of Fall City, Washington
- 2.4 10 km NNE of Snoqualmie, Washington
- 1.7 9 km ENE of Snoqualmie, Washington
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.