Note: The map shows the area with a shaking intensity of 3 or greater, which the USGS defines as “weak,” although the earthquake may be felt outside the areas shown. All times on the map are Central Time. The New York Times A minor earthquake of magnitude 3.6 struck Texas on Tuesday, according to the U.S. Geological Survey. The tremor occurred at 9:26 a.m. Central Time, about 7 miles southwest of Falls City, Texas, agency data shows. As seismologists review available data, they may revise the reported magnitude of the earthquake. Additional information gathered about the earthquake may also prompt USGS scientists to update the tremor severity map. Aftershocks detected Subsequent earthquakes have been reported in the same area. These tremors are usually aftershocks caused by minor adjustments along the part of a fault that slipped at the time of the initial earthquake. Earthquakes and aftershocks within a 100-mile radius Aftershocks can occur days, weeks, or even years after the first earthquake. These events can be of equal or greater magnitude than the initial earthquake and can continue to affect already damaged places. When the earthquakes and aftershocks occurred All times are Central Time. The New York Times Sources: United States Geological Survey (epicenter, aftershocks, shaking intensity); LandScan via Oak Ridge National Laboratory (population density) | Notes: Vibration categories are based on the modified Mercalli intensity scale. When aftershock data are available, the corresponding maps and graphs include earthquakes within a 100-mile radius and seven days after the initial earthquake. All times above are Central Time. Shake data is for Tuesday, September 1 at 10:38 am Eastern Time. Aftershock data is as of Tuesday, September 1 at 2:09 pm Eastern Time.