Earthquake warnings issued across California and Nevada.

The US Geological Survey issued a ShakeAlert after a 4.9-magnitude quake struck near Susanville, California, and phones across parts of California, western Nevada and southern Oregon received warnings. Officials reported no injuries or damage and the USGS gave probabilities for additional aftershocks; next steps are undetermined at this time.

A 4.9-magnitude earthquake struck near Susanville, California, at 9:49pm PT and prompted widespread ShakeAlert notifications. The alert told recipients to 'Drop, cover, hold on' and reached people across parts of California, western Nevada and southern Oregon. Susanville sits near active faults within the Basin and Range and Walker Lane regions, where moderate quakes are relatively common. Susanville Police Department reported no injuries or damage in initial reports. Key details: - The USGS first measured the event at magnitude 5.3, later revised to 4.9, with an epicenter near Susanville and a shallow depth of about 5.6 miles. - At least six aftershocks were detected after the main event, ranging about 2.1 to 2.5 in magnitude. - The USGS reported a roughly 60% chance of a 3.0-or-larger aftershock in the coming week and a 16% chance of another event near 4.9 magnitude. - More than 1,200 people submitted shaking reports to the USGS, and local authorities said no damage or injuries were reported. Summary: The ShakeAlert system issued warnings after a shallow 4.9-magnitude quake near Susanville and many residents across multiple states reported feeling shaking. Officials have reported no injuries or damage, and the USGS has provided short-term aftershock probabilities. Undetermined at this time.