Buy the 2015 Old Farmer's Almanac!
PDO may not be entirelyPDO may not be entirely causative. Recent Arctic warming has led to changes in the position and strength of the polar jet stream or what has been termed the "Arctic Amplification" (AA). Due to AA, we see a slowing down of and large meanders in the polar jet. Indeed the effects of the AA may be more explanatory of the weather in the US this year.

Shop Wind Bells in the Almanac General Store