Spokane has many advantages, being upriver from the point where the greatest floods from runoff will occur, and at a distance from the Hanford nuclear problems. Tidal waves will likewise not reach this far inland. The greatest dangers come from high winds, which will blow inland from the Pacific as it shortens, and the danger in low lying areas of heat from the subducting plates. This puts those who would ride out the shift in a bind, between the winds above and the melting rock below, but a careful analysis of the surroundings will show that many spots are protected from the wind, but well up off the valley floors. As to earthquakes, Spokane, Washington, is an example of a city that will find itself not merely shaken to and fro by the quakes that will be experienced world wide, but heaved upward, and then dashed down, as mountain building occurs in the state of Washington during the forthcoming pole shift.
Examine the coastal mountain ranges from an airplane to get an idea of what happens during rapid subduction of one plate under another. Mountain building occurs due to crinkling of the upper plate occur, and this crinkling represents pressure and release. In addition to the heat from friction that heats low-lands in the upper plate to the point where rock melts like wax, the pressure and release that causes crinkling will result in violent jerking and upheavals, sometimes snapping to create new cliffs or jutting rock. Those riding on the upper plate during these moments will be heaved skyward and dashed, with scarcely a safe place to cling to. Where the land at the point where a fault line forces one plate above another experiences a violent quake, the plates soon break free of each other and slide. Further inland, where the pressure build is delayed, pressure and release occur over a few moments, rather than a single violent jerking motion. Thus, those mountain building points far from the fault line experience more damage than the fault line itself.
Afterwards, this part of the country will experience a milder climate, but the nearby volcanoes such as Mount St. Helen will create a cloud cover that will make outdoor gardening nearly impossible! Plan for a diet of grubs and mushrooms, else learn to garden under cover, with lights generated by hydroelectric power.