Precipitation watch: Maybe something next week … ? plus an overview of California’s dry spell
According to the National Weather Service, temperatures to cool over the weekend, however: “A more significant change will occur early next week as the broad trough will tap into a subtropical moisture fetch. Widespread precipitation across the region will actually bring some rain to much of the valley and snow potentially only to impact the Sierra Nevada passes.”
In other words, not much. But hey, we’ll take what we can get, right?
The California Weather Blog dives into our current dry conditions in wonderful meteorological detail:
” … An examination of 315-day (1/1/2013-11/11/2013) departures from average for several different atmospheric variables gives substantial insight into the proximate cause of California’s extreme dry spell. Immediately apparent is the prominence of a broad region of anomalous geopotential height ridging over the northeastern Pacific Ocean. This geographically vast area of unusually high geopotential heights has been extraordinarily persistent over the past 12 months and has also been a common feature in recent dry years (including, notably, the 2011-2012 winter season). Under this huge ridge, sea level pressure also been well above average for the same 315-day period. … “
So what’s going on and will things change anytime soon? The California Weather Blog makes sense of it all here: An overview of the extraordinary and ongoing California dry spell