Shorts Not In A Knot Yet?

Piers Corbyn is predicting a major earthquake in the April 6th to 9th period.

Piers Corbyn (5 APRIL) said:

"The 6-9th April is our first major (Trial) Earthquake risk period of April and comes with related extreme weather events forecasts. In these trial periods we expect an increase in the serious M6.0 and above quakes in quake vulnerable locations (and related increases in lower level activity) around the world such as the Pacific 'ring of fire'. This includes the WEST USA which in this time period is probably more vulnerable than for decades.

Who knows if this is a good prediction? If you follow the link you will see that he claims one success already. No. Not Japan.

Update: 7 April 2011 1546z

Japan just had an earthquake.

A strong earthquake of magnitude 7.4 shook the northeast of Japan late on Thursday, and a tsunami warning was issued for the coast already devastated by last month's massive quake and the tsunami that crippled a nuclear power plant.

No damage from Thursday's quake was detected at the plant and NHK said workers had been evacuated without reports of any injuries.

Of course one correct prediction does not a method make when the prediction is so broad. It will take a few more correct predictions before we can be sure the method is better than chance.