3.7 magnitude Earthquake in San Francisco

[ehrnst]

Source: SF Quakebot and San Francisco friend's FB pages

A 3.7 magnitude earthquake occurred 1.86mi N of Piedmont, CA.

Read more:

Link to tweet

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Just enough to wake people up.

[PunkinPi]

1. There was one last night on the east coast...

At 6:30 p.m. Tuesday, a 4.7-magnitude earthquake struck about 136 miles offshore east-southeast of Ocean City, Md.

The U.S. Geological Survey reported the tremor, which occurred about six miles deep.

The agency logged over a dozen reports of shaking. Most of them originated from along or close to the Atlantic coast between southeast New York and the North Carolina Outer Banks. However, a handful of witnesses sensed shaking in the Washington region. The intensity of shaking varied between “weak” and “light.”

How could an earthquake so far offshore be felt over land? Jana Pursley, a geophysicist for USGS, told the Delmarva Times that the Earth’s crust in this region is rigid compared to the West Coast, which allows earthquakes to be felt over larger distances from the epicenter. But she added the shaking was unlikely to cause any damage.

Source (short article, little bit more here) --> https://www.washingtonpost.com/weather/2019/01/16/magnitude-earthquake-registered-offshore-ocean-city-shaking-felt-eastern-shore/?utm_term=.c87e44d11f72

[Auggie]

2. Hayward Fault is overdue for "The Big One"

[kimbutgar]

3. I felt it thinking it was the wind from the storm at first

It’s been raining and I thought it was not possible to have earthquakes when the ground has been saturated. Past earthquakes occurred when the ground has been dry.

[akraven]

4. Gads. We don't even feel them unless it's 4.5 or up.............

but that's Fairbanks, where we have several per day.

https://earthquake.alaska.edu/earthquakes

[CreekDog]

5. Piedmont isn't San Francisco, it's between Oakland and Berkeley

and it was a 3.4.