Our last cloud chapter was rudely interrupted by drought, with the last “rain”, an embarrassing one, of just 0.01 inches here in Sutherland Heights a week ago. Areas around us, of course, got more.
Well, its no fun telling folks what they already know, but will say it looks tentatively, relying on the U of AZ 11 PM AST run of last night, like a day similar to yesterday, except a cloudier morning, which I just saw was the case by looking outside right now at 5:49 AM. Cu develop, tops should get cold enough to produce ice-hence-rain and shafting. Hope its measurable today. Also, as you know, moisture levels increase over the next couple of days with substantial rains likely.
In a model curiosity, three consecutive runs of the US WRF-GFS model, beginning with the 5 AM AST, 11 AM AST, and 5 PM AST runs, all from yesterday, had the remains of tropical storm Norbert passing directly over San Diego with substantial rains there. What made it even more likely to happen was that the Canadian model run from yesterday’s 5 PM AST global data, ALSO had the remaining little center of Norbert passing over San Diego, Tuesday, September 9th! Amazing since Norbert is such a tiny feature in our models, at least by the time it gets near San Diego.
As reported here, a month or so ago, the newly discovered oscillation in ocean temperatures, called the “California Niño”, is helping to keep Norbert going longer as it trudges to the NNW just off the Baja coast. Water temperatures off Cal are warmer than usual this summer due to weak onshore flow for the past few months. When the flow is normal, it not only sculpts plants and trees along the Cal coast, but also causes upwelling of COLD water, horrible for beach goers.
Below, examples of wind sculpting1:
1When a realtor shows you property with scenes like these around it, you don’t want to buy there, even if its not windy that day. If you’re a realtor, you’d want to have bushes and trees like this trimmed up real good. hahaha.