Monthly Archives: October 2009

nature, nature|weather, photography, running, trails, trails|smmc open space, weather, weather|southern california

Rocky Peak Rainstorm

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Rocky Peak Rainstorm

Clouds swirled around me as I worked up the steep trail toward an overlook near Rocky Peak. I stopped and listened to the patter of the rain against the rocks, its intensity rising and falling with the gusts of wind.

The wind-driven rain trickled down my face, tasting cool and clean. It didn’t matter that my running clothes were soaked and that with each gust I could feel a chill. It was raining!

In the same manner that a color will sometimes appear especially pure and vibrant, there was an unusual liveliness to this rain.

nature, nature|clouds, nature|weather, photography, photography|landscape, weather, weather|el nino, weather|southern california

Southern California Rain and the 2009-2010 El Niño

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Who would think a western Pacific typhoon could so directly affect California’s weather? But that’s what is happening. The moisture from typhoon Melor, which was over Japan just a few days ago, was captured by an extending and strengthening jet stream. This has resulted in an atmospheric river of moisture, stretching across the Pacific and into California.



This morning, Intellicast composite radar shows Northern and Central California already being hammered by the system. Southern California has seen a few showers, and several stations have already recorded significant rainfall. As of 9:00 a.m. the CNRFC Precipitation Map shows isolated 24 hr. rainfall amounts in the foothills and mountains of Santa Barbara, Ventura, and Los Angeles County ranging from about 0.16 inch at Sandberg to 0.61 inch at West Big Pine.

The last day there was measurable rainfall at Downtown Los Angeles (USC) was on June 5, 2009, when 0.13 inch was recorded. Computer weather models forecast the best dynamics and highest rainfall totals will be in the northern two-thirds of the state, but in recent days have been trending wetter in the Los Angeles area, particularly in the mountains.

With so much moisture in the atmosphere, it takes very little lift to produce rain. Onshore winds, full of moisture, are lifted by foothills and mountains across the flow, and the result is rain — sometimes lots of it. In this case it appears the south to west facing mountains and foothills of Santa Barbara, Ventura and Los Angeles counties may record much higher rainfall totals than the lowland areas.

In a decade characterized by unusual El Ninos, the ongoing El Niño of 2009-2010 is another strange one. El Niño signals continue mixed. The Aug-Sep Multivariate ENSO Index (MEI), decreased from 0.978 to 0.754, however other El Niño signals appear to be rebounding. In the last two weeks low level equatorial westerly anomalies have increased significantly. The reduction in the strength of the trade winds, and a downwelling Kelvin wave resulting from a very strong westerly wind burst already appear to be increasing upper ocean heat content in the central equatorial Pacific. The 30 day moving Southern Oscillation Index (SOI) has been dropping, and should return to negative territory in a day or so.

Recurring equatorial westerly wind bursts and enhanced west-central Pacific convection has been slowly migrating eastward. The most recent round of enhanced convection was centered at about 160E. This is consistent with a developing El Niño, and may have contributed to the creation of the atmospheric river now affecting California, by helping to extend the Pacific jet stream following an East Asian mountain torque event.

However, total and relative AAM remain negative, and are lower than is generally the case during a developing El Niño. Of the weak to moderate El Ninos that have occurred Since 1959, only the 1977-78 and 1994-95 El Niños have had negative average July-September relative AAM values comparable to the current El Niño. Since 1959, only 4 of 15 El Niños have had negative average relative AAM values during the Southern California rain season of November to March. (Revised 12/14/09)

Moderate El Niños come in many flavors and have varying impacts. Under the guise of such El Niños Los Angeles experienced its second wettest water year on record in 2004-2005, when 37.25 inches of rain was recorded; then in 2006-2007 had its driest water year on record, when only 3.21″ was recorded. What flavor will the 2009-2010 El Niño be?

The photo of the tree and clouds is from yesterday’s run at Ahmanson Ranch.

Related post: How Does the El Nino of 2009-10 Compare to Other Warm ENSO Episodes Since 1950?

nature, nature|insects, photography, photography|quirky

Scrub Oak Apple Gall

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Scrub oak apple gall.

Almost incandescent in the soft light of an overcast sky, the remarkable color of this scrub oak apple gall contrasts sharply with the muted greens, grays and browns of the surrounding chaparral.

The gall forms in response to the larvae of the California gall wasp. The gall protects the developing larvae, as well as providing it a source of food.

On the right side of the gall there appears to be a “sun print” of an oak leaf in the red color, where a nearby leaf may have shielded the surface from sunlight.

From today’s run on the Backbone Trail in the Santa Monica Mountains, near Saddle Peak.

photography, running, running|gear

Vibram FiveFingers KSO

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Vibram FiveFingers KSO

Updated August 11, 2013.

At one time or another, most of us have run barefoot — on a beach or in a park, or certainly somewhere as a child.

As a result of the insight and enthusiasm of Barefoot Ted McDonald, and the publication of Christopher McDougall’s book Born to Run, runners have been swept into a new era of minimalist running using Vibram FiveFingers (VFFs). Now a runner can, with VFFs and a little care, run trails virtually barefoot.

Recently, while in Kernville, California, I stopped by Sierra South Paddlesports and picked up a pair of Vibram FiveFingers KSOs. After kayaking in the VFFs a couple of days, the next step was to try them on a short weekday run. One of my usual weekday running sites, Ahmanson Ranch, seemed like a good place to start.

The course I’d picked for the run was mainly on dirt road, but also included some single track. Trail surfaces were a mix of sun-baked dirt and sand, with a couple of short rocky sections. There was one moderate climb with an elevation gain of about 250 ft. The plan was to take a regular pair of running shoes in a pack, and switch shoes at the first sign of a problem.

From talking to other runners and reading about their experiences, I had some idea of what to expect, but was still a little apprehensive. One very common comment was to “not overdo it.” As enamored as I was about running in VFFs, running shoes have worked well for me for 35+ years. It would be really stupid to suffer my first debilitating injury (other than a few rolled ankles) running in the VFFs!

I had given a lot of thought to how I was going to run in the VFFs. My conclusion was not to dramatically change my running technique, but to refine it. Having rock climbed for many years, my goal was to use my legs and feet as appendages, rather than pogo sticks, gently meeting the ground on each stride with precision and “feel.”

It worked! Although I was prepared to switch to regular shoes, much to my surprise, it wasn’t necessary. Running in the VFFs was different, but not the bizarro experience I had imagined. There were even moments when I was just running, and did not have to concentrate on technique and footfalls. At the end of the run I felt good  — no blisters, no bone bruises, no other problems.

After dinner I noticed a different pattern of fatigue in my legs, and my feet felt a little warm and tingly, but there was no soreness or pain. The following day I ran a tough 8 mile course on the Backbone Trail (in regular shoes) and didn’t feel any unusual tweaks or twinges.

Echoing the comments of other runners, I think the key is to not overdo it. Running barefoot used to require a buildup of toughness, strength and skill. Some say the VFFs shortcut that process, and injuries are more likely. Keeping that in mind, I’ll probably run in the VFFs every week or two, and slowly build skill and strength.

Or not… It was hard to curb my enthusiasm, and I used the VFFs on four consecutive weekday runs. Two of the runs were at Ahamnson Ranch, a great area for the VFF newbie, but the other two were on more technical and less forgiving trails. By the fourth day my calves were wasted. This made it difficult to run with good VFF technique — particularly on rocky downhills. The result was a slight bone bruise on my left heel.

Update 08/11/13. Research suggests caution when transitioning to minimalist shoes. See Barefoot Running Can Cause Injuries, Too (The New York Times) and comments.

Update 08/21/12. “Barefoot sports shoes or toed running shoes” will not be permitted to be worn in the 2012 Bulldog 50K and 25K.

Update 02/10/10. I’ve been running in VFFs about once a week for several months now, and really enjoy running in them. Not only is it fun, I think running in the VFFs is refining my running technique so that it is lower impact. Now there’s research that suggests this may be the case. For a comprehensible look at the science of running barefoot, and in VFFs, see Biomechanics of Foot Strikes & Applications to Running Barefoot or in Minimal Footwear.

nature, photography, photography|landscape, running, running|adventures, trails, trails|smmc open space

Tri-Peaks, Sandstone Peak and the Backbone Trail

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Sandstone Peak, the highest point in the Santa Monica Mountains.

We had been scrambling up the rocky north ridge of Boney Mountain for almost an hour. During that time the clouds along the crest seemed unable to make up their mind — thickening, then thinning, gathering then dissipating. Now, as we climbed the final steep step to the crest, they were gathering and thickening once again. I wondered how difficult the route-finding was going to be in a pea soup fog.

The plan was to work up and over Tri-Peaks to Sandstone Peak, then backtrack on the Backbone Trail to the Chamberlain Trail, following it down into the Sycamore Canyon drainage. From there we would see.


Big Dome from Tri-Peaks, in the Boney Mountain Wilderness
Cresting the top of the ridge, I paused to get oriented. Across the canyon, Tri-Peaks lay cloaked in clouds, with only its broad base visible from my vantage point. As we traversed along the cliff toward the peak’s northern flank, nebulous patches of cloud whisked by, carried on a brisk breeze. Reaching a saddle, we wove our way through giant boulders and chaparral to the crags that form Tri-Peaks’ summit.

As if passing through a hidden portal, the clouds dissolved as we worked over to the south side of the peak — opening to a brilliant blue sky. Across the canyon, Big Dome had wrestled free of its tentacles of fog, and to the east, Sandstone Peak stood Everest-like, its summit wreathed in a veil of cloud.

It was a day energized with the zeal of Autumn — a day to climb a peak, and then run down a mountain, across a valley, and over a distant horizon.

Some related posts: Sandstone Peak from Wendy Drive, Boney Mountain North Side Loop