First off, notice he puts it in degrees to make it LOOK like a smaller area; people don't understand that a degree is huge: Berkland's area is something along the lines of 200 miles wide by 268 miles tall, extending WELL beyond the San Francisco Bay Area.
Consulting an earthquake database for quakes 3.5-6.5 in this area from 2000 to 2010; you find 224; this means that in any given week, there's a 40% chance that Berkland is right by dumb luck.
(2) 3.5-6.5M within 2-degrees of Los Angeles (34.0N; 118.0W)
Same search procedure results in 322 such earthquakes in the last 10 years; this means he's going to get a hit 62% of the time by sheer dumb luck.
So, a 40% chance of being right by dumb luck for prediction 1; 61% chance of being right by dumb luck for prediction 2; His 3rd prediction covers a gigantic magnitude range over TWO states, and his 4th prediction 30% chance of being right by dumb luck.
In sum, this virtually GUARANTEES he'll be right one ONE of the predictions every week, usually two, and every once in a while 3 of the 4(no doubt resulting in showers of praise from his sychophantic, yet utterly clueless fans).
Basically, Berkland is exploiting public ignorance of just how many small-medium earthquakes there are.
The Emperor has no clothes.
Much appreciate your clear elaboration.
Thx Thx.