Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Grants Pass, OR
USGS: 1 km NNE of Wimer, Oregon
34 km (21 mi) NW of Medford, OR
- When
- 4:21 am PDT on 7 August 2019 ()
- Where
- 20 km (12 mi) NE of Grants Pass, OR · earthquakes near Grants Pass
- Magnitude
- M 1.6 (ml)
- Depth
- 47 km below the surface
- Felt
- 1 report · strongest reported intensity III
- Nearest
- Josephine County, 40 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2612 days ago
A magnitude 1.6 earthquake was recorded 20 km (12 mi) NE of Grants Pass, OR, at 4:21 am PDT on 7 August 2019 (11:21 UTC). 1 person has reported feeling it to USGS. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Rogue River, Gold Hill, Fruitdale, Merlin, Redwood, Central Point.
How big was it?
This earthquake released about 7.3 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 2,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.3 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 since 1900 lists no earthquake of M5 or more within 50 km.
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 42.5505, -123.1428. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Josephine County, OR | 40 km (25 mi) | WSW | earthquakes near Josephine County |
| Jackson County, OR | 41 km (26 mi) | ESE | earthquakes near Jackson County |
| Douglas County, OR | 82 km (51 mi) | N | earthquakes near Douglas County |
| Curry County, OR | 88 km (55 mi) | W | earthquakes near Curry County |
| Coos County, OR | 105 km (65 mi) | NW | earthquakes near Coos County |
| Del Norte County, CA | 113 km (70 mi) | SW | earthquakes near Del Norte County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 1.8 7 km WNW of Butte Falls, Oregon
- 2.0 6 km SSE of White City, Oregon
- 1.8 7 km SSE of White City, Oregon
- 2.0 7 km S of Shady Cove, Oregon
- 1.9 5 km SE of Eagle Point, Oregon
- 1.5 6 km W of Central Point, Oregon
- 1.8 6 km NNW of Eagle Point, Oregon
- 1.8 6 km SE of White City, Oregon
- 1.6 7 km NNW of Eagle Point, Oregon
- 1.7 7 km SSE of White City, Oregon
- 1.5 5 km ENE of Medford, Oregon
- 1.9 6 km NE of Medford, Oregon
- 1.8 4 km SSE of Eagle Point, Oregon
- 1.7 3 km NE of Medford, Oregon
- 1.6 14 km WSW of Riddle, Oregon
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.