Latest Earthquake: Did You Feel It?

Updated 12:01 p.m.: This morning's quake near Vallejo has been downgraded by the USGS from 3.7 to 3.5 magnitude, according to Bay City News Service in Expert: Quake Clusters Not Unusual.

Earlier:

The U.S. Geological Survey is reporting another 3.7 magnitude earthquake that hit at 9:13 a.m. Thursday.

In magnitude, depth and location, the morning quake mirrors one that struck just over 15 hours earlier, at 6:09 p.m. Wednesday.

The morning quake was located 5.7 miles beneath the earth's surface, two miles south of Vallejo and three miles north-northwest of Crockett, according to the USGS.

The 3.5 magnitude evening quake hit at a depth of 5.8 miles. three miles south of Vallejo and about two miles northwest of Crockett.

A 4.4 magnitude earthquake centered near the Geysers was also felt in some parts of Napa County Sunday night.