Earthquake · reviewed by a seismologist
M 2.5ml
Earthquake near Woodway, WA
No earthquake was likely felt in Woodway in the 24 hours to 7:13 pm PST (03:13 UTC). The last one was M 4.2, 51 km (32 mi) SSW, at 2:05 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 9,329 felt reports to USGS. Every earthquake near Woodway
This page: a magnitude 2.5 earthquake was recorded in Woodway, WA, at 6:02 am PDT on 8 April 2019 (13:02 UTC), 27 km deep. 5 people have reported feeling it to USGS.
USGS: 0 km N of Woodway, Washington
20 km (13 mi) N of Seattle, WA · 6 km (4 mi) NNW of Shoreline, WA
- When
- 6:02 am PDT on 8 April 2019 ()
- Where
- in Woodway, WA · earthquakes near Woodway
- Magnitude
- M 2.5 (ml)
- Depth
- 27 km below the surface
- Felt
- 5 reports · strongest reported intensity III
- Nearest
- Kitsap County, 27 km SW
- Nearest mapped fault
- Southern Whidbey Island fault, under 1 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 2705 days ago
Earthquake alerts for Woodway, WA
Get a notification in this browser when USGS records an earthquake near Woodway, WA. No account or email needed.
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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. 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.
Earthquakes near other towns within 30 km: Edmonds, Esperance, Lynnwood, Mountlake Terrace, Shoreline, Meadowdale.
How big was it?
This earthquake released about 200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 75,000× the energy of this one
- Magna, Utah 2020 M 5.7 53,000× the energy of this one
- Around the size people start to feel M 3.0 4.7× the energy of this one
- This earthquake M 2.5 about 200 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:
- 5.4 8 km NNE of Lake Marcel-Stillwater, Washington · 38 km E of this epicentre
- 5.3 Eastern Olympic Peninsula, Washington · 46 km W of this epicentre
- 5.2 9 km NE of Lake Marcel-Stillwater, Washington · 42 km E of this epicentre
- 5.0 4 km ENE of Machias, Washington · 36 km NE of this epicentre
- 5.0 3 km WSW of Des Moines, Washington · 46 km S 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 47.8017, -122.3822. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kitsap County, WA | 27 km (17 mi) | SW | earthquakes near Kitsap County |
| Island County, WA | 45 km (28 mi) | NNW | earthquakes near Island County |
| King County, WA | 54 km (33 mi) | SE | earthquakes near King County |
| Snohomish County, WA | 54 km (34 mi) | ENE | earthquakes near Snohomish County |
| Mason County, WA | 78 km (48 mi) | SW | earthquakes near Mason County |
| Pierce County, WA | 85 km (53 mi) | SSE | earthquakes near Pierce County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 1.5 5 km SSW of Gorst, Washington
- 1.7 1 km NE of Granite Falls, Washington
- 2.2 2 km ESE of Duvall, Washington
- 1.6 8 km NNW of Bangor Trident Base, Washington
- 1.8 3 km NE of Mirrormont, Washington
- 2.0 3 km E of Granite Falls, Washington
- 1.8 4 km N of Duvall, Washington
- 1.8 5 km NNE of Duvall, Washington
- 1.7 3 km ENE of Enetai, Washington
- 2.4 6 km S of Quilcene, Washington
- 1.6 3 km E of Cathcart, Washington
- 1.5 3 km ENE of Enetai, Washington
- 1.6 1 km SW of Keyport, Washington
- 2.1 3 km ENE of Granite Falls, Washington
- 1.5 2 km N of Boulevard Park, 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.