October 03, 2009

A weather worthy weekend


Click on the images for a close-up.

It looks like we won't have an Acorn Fever season at all, this autumn in Southern California. Now it is Oct. 2, and we have yet to experience that first cool snap that triggers the Fever. That snap is forecast to begin later today, with the arrival of a cold front coming down the coast from the Gulf of Alaska. If the weather bureau is right, tomorrow will be cloudy, cool and rainy at our house. Given the late date of this cool snap, it has a chance to endure for three or four days before temperatures warm again. This is key. When a snap like this hits in early September, it may be only 24 hours before the temperatures have gone back up into the 90s, trapping Southern Californians in the flannels they pulled on in the gray, cool dawn.

Now, in early October, we may have a few days to adjust. We can enjoy the warmth of our flannels, long enough to be willing to put them away, this time in the front of the closet, when temperatures climb again, into the 80s or 90s, by Thursday or Friday.

Meanwhile, as the weather forecasters focused on the north, a tropical storm named Olaf spun up off the southwestern tip of Baja California, and then headed north, straight for us. I pray for such events, but they are exceedingly rare, when tropical storms - what we call monsoon moisture - reach us from the south and east. As a weather freak, I was ticked off when the weather bureau said Olaf would be steered east, away from us, by the very system that was promising to bring us our first cool, rainy experience of the season on Saturday and Sunday.

It turns out that Olaf had some swagger, and sent streams of clouds into our area before the front from the north could do its steering work. By noon yesterday, there was talk of sprinkles. By 3 p.m., light showers were possible, and by 4, there was a mention of thunderstorms. At our house, east of downtown San Diego, all this talk amounted to about 47 wet dots where raindrops hit our flagstone. The sky, on the other hand, was alive with Olaf. The showers didn't hit the ground, but they were up there. "Virga" is what the weather people call showers that don't reach the ground.

These showers do unique things, however, with sunlight. I have lived at Alta Mira since 1992, and I have seen some amazing scenery in the sky. Yesterday, though, brought something entirely new, that Karen, who snapped these images, called "sun showers." I hope I am lucky enough to see something like this again, someday, in the skies west of our house. And this weekend, we still have a rainy Sunday to look forward to.

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