For Bay Area, more rain coming as another atmospheric river approaches

The opening day of the work week brought with it conditions that some might consider ideal. Temperatures comfortably warm and above average for the season, though not too hot. Winds barely rippling. Sun mixing with clouds.

Call it a false flag — at least as far as the weeklong weather is concerned.

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On tap Wednesday will be the arrival of another atmospheric river storm, this one moving in from a more southern part of the Pacific Ocean.

“Right now, we have have high pressure over the region down through Southern California and into the desert southwest,” National Weather Service meteorologist Roger Gass said. “But that’s all going to shift eastward.”

Once that happens, rain is expected to fall intensely in much of the region, and winds are expected to gust heavily agai