Magnitude 4.9 quake in Mexico shakes Arizona's Yuma area
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The gist
A magnitude 4.9 earthquake centered in Ejido Jalapa, Baja California, Mexico, sent alerts to Yuma residents' phones.
The quake was felt as far as Yuma's foothills.
Background
The U.S. Geological Survey (USGS) is the agency that records earthquake magnitudes, epicenters and depths, and runs the Did You Feel It? platform where people report shaking. The Yuma alert came through ShakeAlert, a system that pushes earthquake warnings to mobile devices. The quake is part of a stretch of seismic activity: Northern California also saw several small quakes of magnitude 2.5 or higher around the same period.
How it unfolded
- Nov 2, 2026A preliminary magnitude 2.5 earthquake struck near Concord at 1:23 a.m., about nine miles underground, one of several quakes of magnitude 2.5 or higher in Northern California that morning, on Halloween and the prior week.
- Nov 3, 2026 11:27 a.m. MSTMany Yuma residents received an emergency alert on their mobile devices for a 4.9-magnitude earthquake.
- Nov 3, 2026According to USGS.gov, the 4.9 quake originated in Ejido Jalapa, Baja California, Mexico, at a depth of 15.0 km, and reports said it could be felt as far as the Foothills of Yuma.
Key terms
- magnitude
- A measure of the overall strength or size of an earthquake, determined from seismic wave recordings.
- ShakeAlert
- A US earthquake early warning system that sends alerts to mobile devices on the West Coast.
Source: Wikipedia
Who’s saying what
- Official
- USGS asks everyone who felt the quakes to share their experiences through its Did You Feel It? platform.
- Caution
- The Yuma alert prompted people to drop, cover and hold on, and the report called it a good reminder to remember earthquake safety for future quakes.
Still unverified
The magnitude 2.5 Concord earthquake was described as preliminary, according to the U.S. Geological Survey.