The "PINEAPPLE EXPRESS"--the flow pattern which delivers a heavy precip-provoking flow of deep atmospheric moisture into the Western U.S. from the tropical Pacific west and south of Hawaii---can be seen in this animated forecast which runs through Christmas Day (Dec 25). The areas shaded yellow, orange and red are the predicted regions with the highest moisture concentration. Note how waves of deep moisture sweep repetitiously into the Western U.S. during this forecast period. This forecast is g