That happens to be exactly 9.6 inches more than what we got this winter, only just the second time ever that we didn't get any snow during a winter season. So, why the warm winters lately? It could be global warming, or it could just be a quick warm phase that will even out later. Don't forget, the Earth is 4.5 billion years old, so little ups and downs in climate over 10-50 years is nothing on a global time scale, and there is still a lot to be known about long-term climate.
SEATTLE - Those who love snow will probably be scratching their heads at this answer, but Seattle, believe it or not, averages 11.7 inches of snow a year since 1948. If you factor since 1960 (which takes out the blizzards of the mid 50s), the average drops to 9.6 inches.