Using the North America Forecast Ensembles.
There are plenty of likely signals. I am only capable of using the sea level pressure charts. Try these others for yourselves:
This chart is labelled 2012111100_72
meaning it was prepared from data available at 00:00 on the 11th Novemeber 2012 and run out to 72 hours on the various computer models that make up the forecasts used in the ensemble.
Here is another one:
This thing is actually called:
I have no intention of guessing what that means.
Both show a line of cyclones running across the top of the chart.
These indicate a large earthquake somewhere on the planet in about 72 hours from midnight last night. (the 11th.)