Category: Photos

Posted on
by

2 contrails and a shadow lit up against the morning sky.

I had to get up early today, early enough that I could still see a couple of stars (or more likely planets, but I’ve lost track of where most of them are right now). When I got to work, I was treated to the sight of these contrails lit up against the morning sky. The rising sun was still behind the mountains, below the frame.

Look at the cloud directly above the contrail on the right, near the leaves. You’ll see a dark nearly-vertical line, which I initially took for a contrail’s shadow, possibly even the one below it. A minute or so later, though, it looked like it might have actually been another contrail, one not lit up by the sun and therefore darker than the cloud behind it.

Oddly enough, half an hour later the entire area was blanketed in fog.

Posted on
by

Back in October, shortly before the Santiago Fire, I went sightseeing in the Tustin Foothills and snapped a picture of Peters Canyon, the hills behind it, and Saddleback in the background. A month later, I took a picture of the same view after the fire and posted the two as a before and after comparison.

Well, we’ve had several months of normal (for SoCal) rain, and the hills have turned green. Mostly. It’s clear that the scars from the fire are going to take at least another season to heal. The last couple of days have been very clear, so I went back to the same spot to take a “four months later” photo.

Mt. Saddleback seen from Tustin foothills, March 2008
March 10, 2008. Click for a larger version

Now compare it to the November (post-fire) and October (pre-fire) photos: Continue reading →

Posted on
by

Sun HaloWhenever there’s a light layer of cirrus clouds in the sky, I keep an eye out for halos. I catch the occasional iridescent cloud, or a faint sundog that’s only visible through sunglasses. Today I spotted a 22° halo as I walked back to my car after lunch, around 2:00pm on March 6.

It’s not as sharp as the one I caught 2 years ago, but there was more color. It was clearly reddish toward the inside and bluish toward the outside. Like last time, I didn’t have the good camera, just my cell phone, but at least this time it was a better phone!

This reminds me, our trip to San Francisco a few weeks ago was through patchy clouds, sun, and rain—perfect for rainbows. We spotted several, including one which was not only extremely bright, but actually showed supernumaries inside the band.

Rainbow along US 101

We saw this on Thursday, February 21, somewhere between Paso Robles and San Jose along US Highway 101. Katie remarked that it looked almost double-layered, I looked over, and said, “Grab the camera! It has fringes!”

I’d never seen, or never noticed supernumaries before. I’d never even heard of them until I was reading through Atmospheric Optics a few years ago. If you look on this color-enhanced picture (actually from another photo of the same rainbow), you can see several extra bands inside the violet arc, alternating green and pink.

Zoomed rainbow with supernumary bows.

The really weird thing? Classical optics doesn’t explain them. Refraction and reflection can only explain the red-to-violet band and the secondary bands that sometimes appear outside the main arc. These are actually wave interference patterns that occur if the water droplets are small enough.

On a related note, last Sunday (March 2) I saw what I’m fairly certain was a lenticular cloud, except it didn’t look remotely like a lens. It was just a long, narrow flat cloud floating above the Santa Ana Mountains. I noticed it around 3:00 in the afternoon, and a couple of very thin, also flat clouds above it, and thought it looked like the beginnings of the stack formation. What clinched it was the fact that the cloud was still there, 5 hours later (visible at night by reflected city light), despite the high Santa Ana winds. You know, after spotting two sets last summer, it looks like they form in Orange County a lot more often than I thought.

Posted on
by

Today’s Astronomy Picture of the Day features a view of Mauna Kea’s shadow on the sky, just at the tail end of last week’s lunar eclipse:

Mauna Kea Shadow from APOD (photo by Alex Mukensnable)

I couldn’t help but be reminded of our visit to the summit in April 2005, just at sunset, when I took this similar (but decidedly less cool) photo:

Atmospheric Optics explains why most mountains’ shadows look triangular when viewed from their summits.

Posted on
by

Corona/Iridescent Cloud

Spotted this on Thursday, between rain showers. It’s a slightly distorted corona, formed by diffraction of sunlight around cloud droplets, splitting the spectrum and producing rainbow-like colors. According to the Atmospheric Optics site, the distortion indicates that the droplet size varies across different parts of the cloud.

This was shot through a window, and I’m 99% certain that the straight line running down the middle of the darker foreground cloud is a reflection from inside the room.

Posted on
by

We went to The District on Saturday afternoon to catch Cloverfield and check out the Auld Dubliner. I took the Warner exit to go in the back way, and noticed someone standing out on the shoulder of the ramp, taking photos. I looked out past the wide expanse of empty fields and was astonished to see the entire San Gabriel mountain range covered with snow!

Not just the tops of the mountains on the eastern half of the range, but everything, even the lower parts you can just barely see by the Cajon pass, and this huge expanse north of Los Angeles that I’m not sure I’ve ever seen covered.

San Gabriels (mid-range) covered with snow

I pulled over as soon as I found a spot I considered safe, then walked back up to the top of the ramp. I talked briefly with the man I’d seen taking photos, and he said he’d lived in the area for 50 years and had never seen the mountains like this. He also mentioned he had a friend who had served at the base*, and he was going to send him the pictures.

I ended up taking a 12-photo panorama (zoomed) spanning at least 120° from the blimp hangar on the left, across the San Gabriels, past the hills above Orange and Tustin, the foothills of the Santa Ana Mountains, on to Saddleback, which had a few bits of snow clinging to the mountainside.

San Gabriel Snow Panorama
Click to view panorama (424 KB 6648×500 JPEG)

*This is the location of the former MCAS Tustin. The Marine base was closed in the mid-1990s, and the land is only just starting to be developed—notably The District in one corner, which is what brought us to the area yesterday.

Update December 18, 2008: This post is getting a lot of traffic today, but it’s from last winter. If you want to see photos from this week’s snow, check out Misty Mountains: Another San Gabriel Snow Panorama from the same spot on Tuesday, December 16, and my Snowline photoset on Flickr, for those pictures and several of Saddleback and the Santa Ana Mountains today.

Posted on
by

While driving to work this morning, I looked off to the left and saw this beautiful view of fluffy white clouds hugging the mountains, and bright sunlight on the patchy green hills.* When I got into work, I went straight for the corner conference room that has a view in that direction… but the clouds had rolled in and turned everything gray. I kept checking back every so often, but the closest I got was this:

Green patchy hills

It’s been great to have a more normal amount of rain this year. The coastal hills all turned green after the second rainstorm, early in December. The hills up by the mountains took longer, since most of the area had burned off in the Santiago fire. Faint patches of green started to appear around Christmas, and now, the lower hills at least are more green than brown.

The scenery still looks odd, though. There’s a third peak (Flores?) near Saddleback, about 1,000 feet lower, that normally blends in with the mountain behind it. Well, the entire north face of the hillside burned. Then high winds blew the ashes away. People coated it with a green-gray material that I suspect was intended to prevent mudslides (it looked like the stuff they spray on dirt embankments in construction projects before the landscaping kicks in). It rained, repeatedly. Then we had high winds again, clearing all the gunk out of the air…and now it’s got the light brown color normally seen on the lower, closer hills during the dry season, instead of the darker brown of the mountains. It doesn’t blend at all, even from as far away as Tustin.

Saddleback with a large hill in front of it

This was taken from in front of the Ralphs on Jamboree on January 13. You can see the line of hills in front is still a green/brown mix, and then there’s this light brown lump rising up behind them. On the left side you can see some remnants of the anti-erosion substance.

The following day, on my way to lunch at the Irvine Spectrum (7 miles away, and perhaps a 30-degree difference in angle), I went over a bridge and saw Saddleback next to the Ferris wheel. I knew I had to get that shot.

I parked in the west parking structure, then went running around the top floor looking for a spot where I could frame the wheel and the mountains together, and avoid too many light poles, and get above the few cars, and not have to worry that losing my balance would cause me to fall 3 stories to my death. I finally climbed onto one of the support pillars for the light poles in the middle of the deck, where if I fell I’d only fall a few feet.

Saddleback and Ferris Wheel

Here, you can really see the difference between the areas that burned and those that didn’t. Compare this to the third picture in Saddleback Snow, or the second in Ashen Mountains.

Sadly, the best places to take photos from seem to be the middles of freeway bridges and tops of private buildings — in other words, inaccessible.