Saturday, February 29, 2020

Northwest to get more active, but California rain prospects remain dim

The weather will remain pretty uneventful across the West through the rest of the week, although there will be some storminess returning to the Pacific Northwest by the weekend.
This means that it's likely that San Francisco will indeed end the month with no rain, which has not happened in February since the 1860s. Sacramento looks to have a dry February as well.
Some other places across California, like Fresno and LAX, will likely end the month with just a trace of rain. Downtown Los Angeles is at 0.04 of an inch of rain for the month as of Feb. 26.
A look at some other cities that have been very dry this month:
It is quite remarkable to have places like Santa Rosa and Ukiah, which average over 6 inches of rain for the month, come up dry.
Despite the dry month in California, the heavy rain this past weekend has Phoenix up to 1.34 inches of rain this month, which is about a half inch above average. In addition, that is nearly the amount of rain that has fallen in Portland, Oregon, this month.
For those in California looking to cash in on some more rain before the wet season winds down, the prospects are not looking good.
Just for a broad overview of the chances, let's take a look at how much precipitation the GFS model has through March 7.
Yeah, that's not optimistic at all for rain in even Northern California.
Even when we look at the GFS ensembles, which are a whole bunch of runs of the same model that come up with different solutions, it's not encouraging.
While more rain shows up, it's a minuscule amount, which indicates that probably only a handful of the ensemble members are showing rain.
I do come bearing some good news, though, as both the GFS and European (as well as their ensembles) show the potential for a flip in the weather pattern heading into the second weekend of March.
Obviously, a lot could change between now and then, but it's a reminder that we still have some time left in the wet season. We'll continue to monitor the chances as the timeframe gets closer.
Across the Pacific Northwest, the storm will shift back southward from Canada this weekend, which will likely lead to some rain and mountain snow. Snow levels will drop pretty low, perhaps as low as 1,500 or 2,000 feet.
A few more systems will move through into next week. The biggest impacts will be in the mountains. While there will be several rounds of rain across western Washington and Oregon, no widespread heavy rain is expected.

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