LSW ignore transient events.
Observatories are available for approximately the last three and two solar cycles, respectively.
Like LSW, we do not explicitly take transient events into account. We believe that the Sun's average coronal magnetic flux is not rapidly increasing now. We further believe that near-Earth interplanetary measurements can only poorly, if at all, be generalized to characterize the entire heliosphere, and that the strength of the interplanetary magnetic field is not simply related to the overall solar magnetic field strength.