1 Answer

Because the Pacific tectonic plate is moving westward at a relative faster rate than normal, causing earth quakes in the far east. 

The result is an increase is the temperature of the Pacific Ocean as a result of increased volcanic activity under the Ocean, near Hawaii. 

The warmer air has been holding the normal cold air, coming down from Canada, farther north than is normally the case.

That is why the US weather has been above normal for the past year.   The current weather today is smiler to what we experienced in the thirties and the fifties.

If you note the temperature records set last winter and this summer were comparable to the those highs and lows set back in thirties and somewhat in the fifties.

By the way what you had was Tornado, not a Cyclone.

Typhoons and Cyclones occur in the Souther Hemisphere

The northern hemisphere has Hurricanes and Tornadoes, the difference is the wind rotation is opposite in the two Hemispheres