By Mike Godsey

NPH’s wind turn from NW to NNW and Bay Area winds weaken. Then southerly storm winds.NPHretreatsStrom

by Mike Godsey,

At the beginning of the video  notice the date of Oct 11 and how the North Pacific High dominates the lower 2/3 of the screen creating NW wind on the California coast. Then abruptly as the date changes to Oct. 12 a storm system drops from the Gulf of Alaska and the North Pacific High retreats southward. Notice as this happens how the Northern California coast winds switch from the typical summer NW wind to unfavorable NNW winds that are much less likely to  make it into the Bay Area. And by Tuesday Oct. 13 those weak southerly storm winds will begin to come over the Bay Area.