Earthquake · reviewed by a seismologist
M 4.6ml
Earthquake near Monroe, WA
No earthquake was likely felt in Monroe in the 24 hours to 12:06 am PST (08:06 UTC). The last one was M 4.2, 76 km (47 mi) SW, at 2:05 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 9,329 felt reports to USGS. Every earthquake near Monroe
This page: a magnitude 4.6 earthquake was recorded 4 km (2 mi) west-northwest of Monroe, WA, at 2:51 am PDT on 12 July 2019 (09:51 UTC), 29 km deep. 11,682 people have reported feeling it to USGS.
USGS: 2 km S of Roosevelt, Washington
38 km (23 mi) NE of Seattle, WA · 17 km (10 mi) SE of Everett, WA
- When
- 2:51 am PDT on 12 July 2019 ()
- Where
- 4 km (2 mi) west-northwest of Monroe, WA · earthquakes near Monroe
- Magnitude
- M 4.6 (ml)
- Depth
- 29 km below the surface
- Felt
- 11,682 reports · strongest reported intensity V
- Measured shaking
- intensity V (ShakeMap)
- USGS impact alert
- green
- Tsunami
- USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
- Nearest
- Snohomish County, 28 km NE
- Nearest mapped fault
- Southern Whidbey Island fault, 2 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 263 days ago
Earthquake alerts for Monroe, WA
Get a notification in this browser when USGS records an earthquake near Monroe, 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 light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.
At this magnitude and depth, people at rest would likely notice it out to about 144 km (89 mi) from the epicentre. In Monroe, 4 km away, the estimate is intensity III (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: Monroe 4 km, intensity III · North Creek 13 km, intensity III · Lake Stevens 16 km, intensity III · Everett 18 km, intensity III · Bothell 19 km, intensity III · Lynnwood 23 km, intensity III · Marysville 23 km, intensity III · Redmond 23 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 110 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.6 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 1,500× the energy of this one
- Mineral, Virginia 2011 M 5.8 68× the energy of this one
- Magna, Utah 2020 M 5.7 48× the energy of this one
- This earthquake M 4.6 about 110 tons of TNT
- Around the size people start to feel M 3.0 this one released 230× more
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 (31 mi) since our catalogue begins in 2016. No other earthquake of M4 or more has been recorded this close in that time.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 5.4 8 km NNE of Lake Marcel-Stillwater, Washington · 16 km SE of this epicentre
- 5.2 9 km NE of Lake Marcel-Stillwater, Washington · 19 km SE of this epicentre
- 5.0 4 km ENE of Machias, Washington · 14 km N 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 47.8728, -122.0163. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Snohomish County, WA | 28 km (17 mi) | NE | earthquakes near Snohomish County |
| King County, WA | 45 km (28 mi) | SSE | earthquakes near King County |
| Kitsap County, WA | 54 km (34 mi) | WSW | earthquakes near Kitsap County |
| Island County, WA | 58 km (36 mi) | WNW | earthquakes near Island County |
| Skagit County, WA | 71 km (44 mi) | NNE | earthquakes near Skagit County |
| Pierce County, WA | 92 km (57 mi) | S | earthquakes near Pierce County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 1.7 6 km NE of Fall City, Washington
- 3.0 8 km ENE of Fall City, Washington
- 1.7 6 km NE of Fall City, Washington
- 3.4 9 km NNE of Snoqualmie, Washington
- 1.6 2 km E of Snohomish, Washington
- 1.9 3 km ENE of Granite Falls, Washington
- 1.8 5 km WSW of Darrington, Washington
- 2.7 0 km WSW of Klahanie, Washington
- 1.6 8 km S of Baring, Washington
- 1.8 1 km E of Snoqualmie, Washington
- 1.7 2 km ESE of Lake Marcel-Stillwater, Washington
- 1.8 6 km WSW of Clinton, Washington
- 2.6 6 km WSW of Clinton, Washington
- 2.2 8 km SW of Warm Beach, Washington
- 2.6 1 km NE of Lake Marcel-Stillwater, 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.