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3.5 and 3.9 magnitude quakes strike near Ontario, small aftershocks continue
Two quakes with magnitudes above 3.5 are the largest in a cluster of quakes that hit near Ontario International Airport Saturday morning.
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Courtesy USGS
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Two earthquakes struck near Ontario within 30 minutes on Saturday morning, with a magnitude of 3.5 and 3.9, respectively, according to the U.S. Geological Survey. They were the largest in a series of smaller quakes that continue to rattle the area.
The first quake, a 3.5, struck at around 10:05 a.m. It was followed by the 3.9, about 30 minutes later. Quakes of those magnitude produce weak shaking.
No immediate reports of injury or damage.
A shake alert message was sent.
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Two quakes hit near Ontario nearly back to back Saturday morning.
(
Courtesy USGS
)
Does this mean a bigger quake is coming?
There's a roughly 5% chance that a bigger quake could strike some time in the next few days. Although seismologist have advised us it would likely be only slightly more powerful.
This is the standard forecast for all quakes, since the question comes up frequently.
We have earthquake resources
We don't want to scare you, but the Big One is coming. We don't know when, but we know it'll be at least 44 times stronger than Northridge and 11 times stronger than the Ridgecrest quakes in 2019. To help you get prepared, we've compiled a handy reading list:
- Your guide to surviving the Big One
- For earthquakes, forget the 'go-bag.' Here's how to prepare
- How to not get life-threatening diarrhea after a major earthquake
- 10 earthquake-related questions to ask your landlord immediately
- How to prepare for an earthquake if you have a disability
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