ISLETON, Calif. — Many people in Northern California got a ShakeAlert notification from the U.S. Geological Survey on their phones Wednesday.
"Earthquake Detected! Drop, Cover, Hold On. Protect Yourself. - USGS ShakeAlert," is the notification several people received Wednesday.
But several were left wondering if it was a real alert or a test.
According to the U.S. Geological Survey, a preliminary magnitude 4.2 earthquake struck Sacramento County. The quake struck around 9:30 a.m. about three miles southwest of Isleton. It's near Rio Vista and Bethel Island, California.
The quake was initially estimated at magnitude 5.7 but was downgraded.
A few people reported feeling it as far north as Lincoln and as far south as San Jose. Many people got a ShakeAlert on their phones. There are no immediate reports of damage.
A map of where the earthquake was likely felt can be found HERE.
ShakeOut day is Oct. 19 at 10:19 a.m. There is a one-minute-long drill that is held annually on the third Thursday in October. It will be in Los Angeles.
ALL ABOUT EARTHQUAKE PREP:
- What you need to know about ShakeAlert, the earthquake warning system | Earthquake Ready or Not
- What can happen to our power grids after an earthquake? | Earthquake Ready or Not
- Why a disaster kit will help you survive the next big one | Earthquake Ready or Not
- What you need to know about the San Andreas fault | Earthquake Ready or Not
- The science of forecasting earthquakes | Earthquake Ready or Not
- How vulnerable is California to tsunamis? | Earthquake Ready or Not
WATCH MORE: Earthquakes come without warning and if you aren’t prepared by the time the big one hits, you will be too late. The 2019 earthquake near Ridgecrest, California shined a spotlight on the need to be prepared with a disaster kit and a plan. A little work now could help you survive the next quake.
