Earthquake · reviewed by a seismologist
M 1.9ml
Earthquake near Porterville, CA
No earthquake was likely felt in Porterville in the 24 hours to 12:43 pm PST (20:43 UTC). The last one was M 1.6, 9 km (6 mi) SE, at 3:02 pm PDT on 22 September 2026, estimated intensity II (weak) in town. Every earthquake near Porterville
This page: a magnitude 1.9 earthquake was recorded 34 km (21 mi) east-northeast of Porterville, CA, at 10:32 am PDT on 17 June 2024 (17:32 UTC), 4.3 km deep.
USGS: 34 km ENE of Porterville, CA
36 km (22 mi) ENE of Porterville, CA · 123 km (76 mi) SE of Fresno, CA
- When
- 10:32 am PDT on 17 June 2024 ()
- Where
- 34 km (21 mi) east-northeast of Porterville, CA · earthquakes near Porterville
- Magnitude
- M 1.9 (ml)
- Depth
- 4.3 km below the surface
- Felt
- no reports yet
- Nearest
- Tulare County, 13 km NW
- Nearest mapped fault
- Kern Canyon fault, 20 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 878 days ago
Earthquake alerts for Porterville, CA
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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 15 km (9 mi) from the epicentre. In Porterville, 34 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.
How big was it?
This earthquake released about 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
- Magna, Utah 2020 M 5.7 440,000× the energy of this one
- Around the size people start to feel M 3.0 39× the energy of this one
- This earthquake M 1.9 about 25 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 one earthquake of M5 or more within 50 km:
- 5.0 5 km S of Springville, California · 18 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 36.1622, -118.6573. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Tulare County, CA | 13 km (8 mi) | NW | earthquakes near Tulare County |
| Kern County, CA | 91 km (56 mi) | S | earthquakes near Kern County |
| Kings County, CA | 105 km (65 mi) | W | earthquakes near Kings County |
| Fresno County, CA | 111 km (69 mi) | NW | earthquakes near Fresno County |
| Inyo County, CA | 121 km (75 mi) | ENE | earthquakes near Inyo County |
| Madera County, CA | 152 km (94 mi) | NW | earthquakes near Madera County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
55 earthquakes have been recorded within 50 km since this one.
- 1.9 10 km E of Porterville, CA
- 2.4 42 km WSW of Olancha, CA
- 2.1 28 km WSW of Olancha, CA
- 2.0 23 km SSE of Porterville, CA
- 1.5 23 km SSE of Porterville, CA
- 2.2 24 km SSE of Porterville, CA
- 1.7 10 km E of Porterville, CA
- 1.8 28 km WSW of Olancha, CA
- 1.7 28 km WSW of Olancha, CA
- 1.6 28 km WSW of Olancha, CA
- 1.8 28 km WSW of Olancha, CA
- 1.9 28 km WSW of Olancha, CA
- 2.1 40 km WSW of Olancha, CA
- 2.1 24 km WSW of Olancha, CA
- 3.0 24 km WSW of Olancha, CA
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.