The normally invaluable Twitchers start us up with this:
‘Lunacy!’ Science-denier Pelosi daughter blames earthquake on fracking, cries sexism when schooled
Really? She claims she was noting a general link between earthquakes and fracking, not a specific link between the earthquake which caught her eye and fracking. Could a 140 character Twitter post actually be ambiguous or open to multiple interpretations? I bet that has never happened before.
Here is the epicenter of the TweetQuake:
As to the assertion that she "cries sexism when schooled", let's look at the timeline of call and response on her Twitter timeline (I have no idea how to freeze this in time so link-rot will kill this post quickly, but let's press on).
As best I can tell, Ms. Pelosi relatively quickly Tweeted this:
Interesting but unsurprising that folks who troll a comment about our fragile environment go immediately to personal
However, in the expanded conversation to the previous Tweet I do see this:
I am not sure what the joke is there but I think one is intended. In any case, holding all of your respondents responsible for the most daft thing said is a classic Internet ploy but maybe a bit stale. That said, there are subsequent examples of unambiguously sexist and offensive stuff I deplore but will not repeat here. And on the fourth hand, a few bad apples shouldn't typify the barrel (unless spoilage is contagious...? #CitySlicker).
In November 2011, a M5.0 earthquake occurred less than a day before a M5.7 earthquake near Prague, Oklahoma, which may have promoted failure of the mainshock and thousands of aftershocks along the Wilzetta fault, including a M5.0 aftershock. The M5.0 foreshock occurred in close proximity to active fluid injection wells; fluid injection can cause a buildup of pore fluid pressure, decrease the fault strength, and may induce earthquakes. Keranen et al.  links the M5.0 foreshock with fluid injection, but the relationship between the foreshock and successive events has not been investigated.
Hence, we argue that the M5.0 foreshock, induced by fluid injection, potentially triggered a cascading failure of earthquakes along the complex Wilzetta fault system.
As to what that means for California, ask a geologist, not me. Maybe fracking sometimes wakes up a geologically somnolent area but has little additional impact on an active area which is already experiencing a lot of slipping and sliding. Or maybe even one extra earthquake in California would be one earthquake too many.
I don't know. But suggesting Ms. Pelosi is a left-wing nutjob for worrying about it is absurd. And insisting that she clearly linked fracking to this specific earthquake off the Cali coast is a stretch. Time to move on, and IMHO there are plenty of folks who might want to revisit their tone.