What is 1906 San Francisco earthquake?
{{Infobox earthquake |title = 1906 San Francisco earthquake |timestamp = 1906-04-18 13:12:27 |isc-event = 16957905 |anss-url = official19060418131226300_12 |local-date = {{Start date|1906|4|18}} |local-time = 05:12 a.m. local time |map = |map2 = {{Location map+ |USA California |relief=1 |places = {{Location map~|California|lat=40.80|long=-124.16|label_size=100|label=Eureka|position=top|mark=Green pog.svg}} {{Location map~|California|lat=41.22|long=-122.27|label_size=100|label=Dunsmuir|mark=Green pog.svg}} {{Location map~|California|lat=39.74|long=-121.84|label_size=100|label=Chico|position=left|mark=Green pog.svg}} {{Location map~|California|lat=39.34|long=-120.20|label_size=100|label=Truckee|mark=Green pog.svg}} {{Location map~|California|lat=38.45|long=-122.7|label_size=100|label=Santa Rosa|mark=Green pog.svg}} {{Location map~|California|lat=36.68|long=-121.66|label_size=100|label=Salinas|position=left|mark=Green pog.svg}} {{Location map~|California|lat=35.37|long=-119.02|label_size=100|label=Bakersfield|mark=Green pog.svg}} {{Location map~|California|lat=36.75|long=-119.77|label_size=100|label=Fresno|mark=Green pog.svg}} {{Location map~|California|lat=35.47|long=-120.65|label_size=100|label=Paso Robles|position=left|mark=Green pog.svg}} {{Location map~|California|lat=34.03|long=-118.49|label_size=100|label=Santa Monica|position=left|mark=Green pog.svg}} {{Location map~|California|lat=33.72|long=-116.22|label_size=100|label=Indio|position=left|mark=Green pog.svg}} {{Location map~|California|lat=37.75|long=-122.55|mark=Bullseye1.png|marksize=40}} |label = |position = top |width = 260 |float = right |caption = }} |magnitude = 7.9 [[Moment magnitude scale|M<sub>w</sub>]] |depth = {{convert|5|mi|abbr=on}}<ref name=lomax>[http://alomax.free.fr/posters/1906-focus/ Location of the Focal Region and Hypocenter of the California Earthquake of April 18, 1906]</ref> |intensity = [[Mercalli intensity scale|XI (''Extreme'')]] |countries affected = [[North Coast (California)|North Coast]] <br> [[San Franci