ShakeAlert Earthquake Early Warning makes having a ball ⚽️ in earthquake country even safer! All fans🏟️ score when they are ShakeAlert Ready! ShakeAlert is available in California, Oregon, and Washington. Be a fan 📲: usgs.gov/FAQ/BeShakeAlertSaf… @ListosCA @Cal_OES @UOHazardsLab @OregonOEM @SantaClaraCity @SCCOEM @ReadyLACounty @ReadyLA @CityofSeattle @SantaClaraCity @FEMARegion9 @FEMARegion10 @PNSN1 @ReadyInglewood @LosAngelesFWC26 📷 If you are in a large venue, like a stadium, and feel shaking or get an alert, quickly DROP to the floor in front of your seat if you can, or lean over as much as possible. COVER your head and neck with your arms. HOLD ON until shaking stops. Follow guidance from local officials.

Happy #FieldworkFriday! At station OLQN near Lake Quinault, the sun is shining and the forest is thriving. Field staff visited recently to make repairs and upgrade the power system at this station, which contributes to the @USGS_ShakeAlert Earthquake Early Warning system.

#FieldPhotoFriday Many of our stations, like this one near Westmorland, are spaced throughout the state's deserts and serve a vital role collecting data in our more swarm prone regions! This station contributed heavily to the recent Brawley swarm which produced hundreds of events including multiple M4 quakes! #ShakeAlert #CalOES

Update: the magnitude for this earthquake has been updated to magnitude 5.1.

"About a year after Natalia Ruppert arrived in Fairbanks she was playing volleyball when the gymnasium around her began to shake. Everyone else knew what was going on—Alaska is the most seismologically active state in the country, after all—but it was new to the young PhD candidate. She’d left the dismantling Soviet Union to study earth science, so 'it was actually kind of exciting,' she remembers. 'My first earthquake'." Meet Dr. Natalia Ruppert, coordinator for the USGS-led ShakeAlert Earthquake Early Warning System. She and her team help keep over 50 million people in Washington, Oregon, and California safer from earthquakes. Link to the full article by Allison Williams: seattlemet.com/news-and-city… @CaltechSeismo @BerkeleySeismo @UOHazardsLab @Cal_OES @CAGeoSurvey @OregonOEM @UW @PNSN1 @uafairbanks @FEMARegion9 @FEMARegion10 @waDNR @USGS @USGS_Quakes @OEMSeattle @SeismoSocietyAm @waShakeOut 📸 Dr. Natalia Ruppert on the Atmospheric Sciences and Geophysics Building at UW. Image courtesy of Grant Hindsley, SeattleMet

#FieldPhotoFriday Station maintenance is rarely just one task. During a recent visit to this site, our crew cleared weeds, replaced a sensor, and identified an additional problem to address on a future trip. Keeping the network healthy and crucially @USGS_ShakeAlert ready takes constant work to ensure it's reliable for future quakes!

Emergency managers rely on fast, reliable information during earthquakes. The USGS is helping them train with the tools used during real events. At the 2026 California Emergency Services Association (CESA) Conference in San Diego, the USGS ShakeAlert Team previewed the new Earthquake Information Tools for Public Safety training module for emergency managers and preparedness professionals. The training focuses on earthquake information tools that support decision-making before, during, and after earthquakes, including: 📲 ShakeAlert® Earthquake Early Warning — Detects earthquakes rapidly and sends alerts to people and automated systems, often before strong shaking begins. 🗺️ ShakeMap® — Provides maps showing ground motion and shaking intensity to help assess impacts after significant earthquakes. 📈 Aftershock Forecast — Estimates the likelihood and expected number of aftershocks following a significant earthquake. Planned for release in early 2027, the module will include training resources and an immersive scenario designed to strengthen understanding and operational use of these tools. Download a copy of the Earthquake Information Tools fact sheet here: ow.ly/i4O950Z2UXX @USGS_Quakes @Cal_OES @CAGeoSurvey @FEMARegion9 @FEMARegion10 @waDNR @UOHazardsLab @OregonOEM @CaltechSeismo @BerkeleySeismo @EMCESA @NationalCERT1 @PNSN1 📸1: ShakeAlert team members engage CESA attendees about the Earthquake Information Tools Project and the ShakeAlert Ready Community Emergency Response Team Project. 📸 2: Project leader shares the timeline of when different earthquake information tools are available.

#FieldPhotoFriday from Hungry Valley, CA! After some serious digging at this site, our team swapped out worn batteries and updated the equipment to keep this station running smoothly. As part of the #ShakeAlert EEW System, it helps keep 50 million people on the West Coast safe!

Learn more about the temporary increase in earthquake activity near Brawley, CA - known as a seismic swarm. The USGS assesses that the earthquake caused no-to-light damage from shaking. Approximately 180 thousand people experienced Light (MMI IV) to Strong (MMI VI) shaking. The ShakeAlert Earthquake Early Warning System was activated several times resulting in alert deliveries to cell phones. 👉If you feel shaking or get an alert: Drop, Cover, and Hold On. Stay safe everyone. Learn more about the Brawley swarm here: earthquake.usgs.gov/earthqua… @USGS_Quakes @Cal_OES @CaltechSeismo @CAGeoSurvey @FEMARegion9 @CAStateParks @ImperialCntyCA @UOHazardsLab @USGS @SanDiegoCounty 📸Screenshot of the Brawley seismic swarm with currently 344 events in the sequence (as of 8:45 am Pacific Time on 5/10). The southern end of the Salton Sea is shown upper left.