Today, I will mix it up a bit and go away from the closed low and the rain it will bring to Southern California by Thursday. Today, I will look on the other end of the spectrum, the exceptionally dry conditions in the Northwest.
It is not unusual to be dry for two and a half months in California for the summer into early fall. In fact, it is pretty normal. But the Pacific Northwest? This is an area of the nation that many people think is a pretty rainy place. Some of this is true; some of it is an overstatement. But in reality it does rain in this area fairly often, especially from the Cascades on west.
But since the beginning of August, even a few raindrops have been hard to come by. Below is a table showing some of the major cities along with how much rain has fallen since Aug. 1, what is normal during that time period and what percentage of normal rain has fallen.
These rainfall amounts are more like what one would expect in a desert region. All cities have had an extremely small percent of what is normal during this time, and a couple of places have had no rain at all. These are incredible numbers for this part of the country.
The weather is going to stay bone dry for another two days before changes finally take place. Rain will return to areas west of the Cascades on Friday as a cold front arrives. A second front will move in on Saturday. East of the Cascades, the first front will be mainly dry, but a couple of showers seems likely with the second front. And it looks wetter right on into next week with potentially for some pretty good rain amounts in parts of western Washington early next week.
A prolonged rain-free pattern is setting in.
By this time in 1998 there was twice as much rain that had occurred to date compared to 2015-2016.
Could an unusual El Nino precipitation pattern be as simple as looking at the state of water temperatures?
One thing that I find interesting is that the pattern since fall has not been your typical El Nino storm pattern.
There are signs of a possible stormier pattern beginning the week of Jan. 18.
The cumulative effect of the series of storms will mean flooding, mudslides and debris flows are going to be a problems for much of the week