Thursday, January 19, 2012

Quick update - rain delay

It's finally raining in San Francisco after much delay.  The system that impacted the Pac NW with heavy rain, ice, and snow yesterday finally slid south and brought light rain to the Bay Area, which will continue on and off overnight.  Rainfall totals will remain below a quarter inch in SF though, which is less than previously expected.  A considerably stronger system will move in Friday afternoon and night, with up to an inch of rain possible along with gusty winds, so evening plans tomorrow should include an umbrella.  Much of Saturday and Sunday will likely be dry with only passing showers, so weather impacts for the 49ers game should be minor.  A third system will move in Sunday night, with moderate rains possible.

After that, unfortunately, it appears the persistent ridge of high pressure that was over the West Coast for most of the past few months will rebuild.  This will send heavy rains northward, leaving us with dry and warmer conditions likely through the end of January.  So, it does appear that this transition to a wetter pattern across California will be quick.

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