The only story in the West of big importance weather-wise is the impending chance of rain next week over much of California. An early season closed low will bring the chance of some rain for much of central and Southern California for at least several days next week along with temperatures well-below normal.
The ideas remain the same from my two previous posts. I am not going to rehash what I have been saying. I do want to give you a visual look at each day Monday through Thursday next week to show you the stability of the REX block. Because we cannot redistribute the European model data in graphical form, and the fact that there really is no important large-scale differences between it and the GFS, I give you the 500 mb graphics from the 12Z run of the GFS for each day.
As with any closed low where precipitation occurs, it is very hard to forecast even a day or two out. It is obvious that there is a good chance for scattered showers, and even a thundershower, somewhere around this closed low each day. It is also likely in this pattern that temperatures will stay well below normal for some time to come.
Populated areas are going to have problems. Expect local wind damage in addition to travel problems for high-profile vehicles.
As far as April storms go this will be a decent one
Wednesday, Governor Jerry Brown announced the first ever statewide mandatory water restrictions.
March is now looking like it too will set records in some cities.
Central and Southern California are in store for yet another heat wave.
Unless there is a late-season miracle, it is putting the state back in a similar place to last year.