BART's began service later than expected today, after an earthquake with a magnitude of 4.0 struck the Fremont area at 2:41 this morning.

According to the United States Geological Survey, the quake was in the Hayward Fault, and had a depth of 5 miles. It's epicenter was 2 miles north-northeast of Fremont, 2 miles east-southeast of Union City, and 7 miles southwest of Pleasanton.

At 4:12 a.m. Tuesday, BART sent an alert warning that due to the quake, they were delaying service to perform a track inspection. At 4:57 they determined that all tracks were fine, and service began for the day.

The USGS reports that there have also been two notable aftershocks in the same area this morning: a 2.7 at 2:56 this morning, and a 2.6 at 3:07. There have also been numerous smaller (less that a magnitude of 2) events all morning.

UPDATE: BART is recovering from major delays after track inspections.EARTHQUAKE UPDATE: At least 11 aftershocks have...

Posted by ABC7 News on Tuesday, July 21, 2015

According to the USGS's "Did You Feel It?" map, the seismic event was felt throughout the Bay Area. However, at publication time no injuries or damage had been reported as a result of the quake.

Here in the Outer Sunset, I slept right through it. Did you feel it where you are? Tell the USGS, then tell us!