Hikers, riders, and runners reveled in the unseasonably cool afternoon temperatures at Ahmanson Ranch (Upper Las Virgenes Canyon Open Space Preserve) yesterday.
According to the NWS, the high temperature of 75 degrees at Woodland Hills (Pierce College) was the lowest for the date on record. The temperature at the Cheeseboro RAWS didn’t reach the 70s until around 1:30 p.m., and finally hit 75 around 4:30 p.m. Earlier in the day, the station recorded 0.03 inch of light rain.
I took advantage of the cooler weather to do an out and back trail run from the Victory Trailhead to Cheeseboro Canyon. The nine mile run has an elevation gain/loss of around 1000′. Except for a couple of hills, it’s a relatively fast-paced route, particularly on the way out to Las Virgenes Canyon. There are two creek crossings in Las Virgenes Canyon. These dried up earlier this year, but in some years the crossings have enough water to get your shoes wet.
It’s not a good run to do when it’s hot, and in the Summer Ahmanson is almost always hot. In-the-sun temperatures are typically above 100 degrees, and sometimes reach 110 degrees or more. More than once I’ve encountered people on Ahmanson area trails that misjudged the conditions and were out of water. And sadly, dogs are especially susceptible to heat.
Here’s an interactive, 3D terrain view of the run. The map can be zoomed, tilted, rotated, and panned. To change the view, use the control on the upper right side of the screen. Track and placename locations are approximate and subject to errors. Poor weather, and other conditions may make this route unsuitable for this activity.
Those that recreate at Ahmanson will recognize the title photo as East Las Virgenes Canyon, about 1.1 mile from the Victory Trailhead. This is where a trail/road to Lasky Mesa forks off the main road.
When I started up the trail from Vincent Gap (6585′), the thermometer on my pack read 36°F. For the first few switchbacks, the trail was immersed in cloud. Beneath the tall conifers, the sandy soil was dotted with droplets of moisture extracted from the fog.
Google Earth image of GPS track down the South Ridge of Mt. Baden-Powell to Ross Mountain
I was on my way to Ross Mountain (7402′), one of the most isolated peaks in the San Gabriel Mountains. At the end of a rugged, 3-mile ridge extending south from the summit of Mt. Baden-Powell, the peak overlooks the vast canyons of the Sheep Mountain Wilderness.
This morning, the canyons were filled with a 7000′ deep layer of stratus clouds. With a weak upper low over the Southern Sierra, the question of the day was whether the cloud deck would work up the ridge from Ross Mountain and completely envelop Baden-Powell.
Summit of Mt. Baden-Powell. May 16, 2021.
Well acquainted with the trail up Baden-Powell, a combination of fast-hiking and slow-jogging put me on top in a relatively comfortable 90 minutes. I’d tried not to overdo the pace, knowing from previous experience that the return from Ross Mountain would be the tough part of the day.
From the summit of Baden-Powell, I gazed across the sea of clouds to Mt. Baldy. There was almost no snow on its steep north face. San Gorgonio Mountain was visible in the haze to the left of Pine Mountain and San Jacinto Peak in the gap between Dawson Peak and Mt. Baldy.
South Ridge of Mt. Baden-Powell with Ross Mountain partially visible in the clouds
Walking a little down the south side of Baden-Powell, I got my first good look at the South Ridge. Ross Mountain was nearly covered in clouds. Guessing that the deck of clouds might deepen, and a few minutes might make the difference of being in the clouds or out, I started to jog-lope-shuffle down the initial steep slope.
The title photo was taken a bit past Peak 8375, about 1.7 miles from Baden-Powell and 1.2 miles from Ross Mountain. At that time the clouds were spilling over the ridge near Peak 7407 and Peak 7360+, and around Ross Mountain.
Into the clouds near Peak 7407
The clouds added an aesthetic element to the adventure, as well as a little uncertainty. They accentuated and embellished the terrain, while threatening to make the conditions wet, cold and disorienting. Being familiar with the route helped me to enjoy the experience more than the concerns.
After navigating the false summits along the final stretch of ridge, I finally reached Ross. And, of course, it was in the clouds. That was the tradeoff for the spectacular views of the clouds along the ridge.
I didn’t spend much time on the summit. The more time I could spend out of the clouds, the more enjoyable would be the 2200’+ climb back to Baden-Powell.
It took a little over two hours for the clouds to chase me back up the ridge, but only an hour to run the four miles down from Baden-Powell to the foggy trailhead.
Twin Peaks and Mt. Waterman from the Hawkins Ridge Trail
Don’t let there be a headwall… Don’t let there be a headwall… That’s what I kept muttering to myself as I climbed up the decomposing granodiorite rib. The topo map showed the rib connecting directly to the crest, but from my vantage point I couldn’t tell if that was actually going to happen.
So far the the difficulties had been manageable. The route had been steep and loose, but for the most part it was at an angle that probably wouldn’t result in a long fall or slide. Probably. But if it got any steeper it could be a problem, and I really didn’t want to downclimb 1200′ of crumbly rock and loose debris.
Working up the rib I had gone from “secure spot to secure spot,” trying to minimize my exposure in between. In a few places a climbing move had been required to avoid disturbing fractured or delicately balanced rocks. On one section it had been necessary to crawl through a mountain mahogany, its stiff limbs poking fun at my route-finding. Higher up, the solid handholds of a massive gray boulder had helped to ascend a particularly loose section.
Crystal Lake Recreation Area from the crest near Peak 8426
As I climbed, I considered alternative routes, surveying the terrain to my left, right, and along the crest. I couldn’t help but wonder if there was a better line. But I needed to be patient. The rib was working and I just needed to stay on it.
I tried to recall if I’d ever been on anything like this. I’d certainly done a few class 2 descents on Sierra peaks that were loose. The closest comparison might be some of the “knapsack passes” in the Sierra. These are usually class 2 or class 3 routes that go over notches and connect one high basin to another. They are often steep, loose and wet, and can hold snow or ice throughout the Summer.
And then suddenly I was on top. There was no more rib to climb. While I enjoyed the problem solving, it’s not a climbing route I would recommend, and I probably won’t repeat it.
South Mt. Hawkins and Sadie Hawkins from the Hawkins Ridge Trail
Climbing the rib was my overly-creative way of doing a loop that included the Hawkins Ridge Trail. I’d done Middle Hawkins (Peak 8505′) as a side trip on a run from Islip Saddle to Baden-Powell, but had not gone down the ridge as far as Sadie Hawkins (Peak 8047′).
It was the perfect day to be running the Ridge Trail. The weather was far better than during my last run in the area. Temps were about 20 degrees warmer, and while it was still breezy, the wind was nowhere near the strength of a couple weeks ago. A sea of marine layer stratus filled the valleys and extended into San Gabriel Canyon, providing an “above the clouds” backdrop befitting of a mountain trail.
Pines on Hawkins Ridge that survived the 2002 Curve Fire
Winding down the use trail from Sadie Hawkins, I rejoined the main Hawkins Ridge Trail and followed it down to the saddle between Sadie Hawkins and South Mt. Hawkins. Two weeks ago, I’d followed the road up to South Hawkins and then descended the north ridge directly. This time I ascended the Hawkins Ridge Trail, carefully following the trail. I was surprised to find it didn’t ascend the north ridge directly, but wrapped around the west side of the peak.
Later, as I ran down South Mt. Hawkins Trail/Road, I thought about the amount of rocky debris along and on the road. It emphasized the friable nature of the rock above, and how often there are larger rockslides. When I reached the point on the road where I could see the route I’d climbed, I just shook my head. Who the heck would want to go up there?
There was hardly any wind on the drive out to Azusa, and I wondered if the offshore wind event forecast to peak this morning was going to happen. But after winding up Highway 39 to the Windy Gap Trailhead, all doubts vanished. The wind was blowing in powerful gusts that shook the car and my enthusiasm.
Morning light on Islip Ridge
Not only was it windy, it was cold. I briefly debated going down to warmer climes — temps were forecast to be in the 80s and 90s in the valleys — but decided to at least run up to Windy Gap and see what it was like there.
As is often the case, once I got moving, it wasn’t too bad on the Windy Gap Trail. It was very windy in some spots and nearly calm in others – just what you would expect on the lee size of a mountain ridge. One thing was consistent — there was almost no sunlight on the trail.
Ribbon of sunlight on trees along the Windy Gap Trail.
I’d been curious to see how the run/hike to Windy Gap (7588′) from the Windy Gap Trailhead (5836′) in the Crystal Lake Recreation Area compared to starting at the Islip Saddle Trailhead (6650′) on Hwy 2. It turns out the distance using either approach is the same — a little over 2.5 miles. But, the Windy Gap Trailhead is lower, so starting there adds a little over 800′ of gain. Today, that extra gain was helping to keep me warm.
As I worked up the last long switchback I could see and hear the trees on the crest being buffeted by the wind. Reaching Windy Gap I’d was relieved to see that it looked the same as it always has. As shown on fire maps, Windy Gap was not burned in the Bobcat Fire.
Mt. Islip (left) from the Windy Gap Trail
That relief was short-lived as I was just about knocked down by a gust of wind. I’ve passed by Windy Gap many times, and the wind this morning was the strongest I’ve experienced there.
Later I found that several gusts over 50 mph were recorded at Chilao that morning. Because of terrain effects, I would not be surprised if the gusts at Windy Gap were 60 mph or more. The gusts were “stop you in your tracks, blow you over” strong. And it was cold. The temperature sensor on my pack read 34°F.
Twin Peaks and Mt. Wilson from the South Mt. Hawkins Trail
Out of curiosity, I ran a short distance along the PCT to see if conditions improved. That was a bad idea. I turned around and got the heck off the crest.
Running back down the Windy Gap Trail, I wasn’t ready to call it a day. It occurred to me that I could run down to the South Mt. Hawkins Trail — the old South Hawkins Lookout service road — and then run up to South Mt. Hawkins. Maybe the old road would be more wind-protected than the Windy Gap Trail.
Jeffrey pine cones along the South Mt. Hawkins Trail
And maybe not! Looking at the topography, I could not figure out why the wind on some sections of the South Mt. Hawkins road was so strong. Some gusts were as strong as at Windy Gap. The noise from the wind in the trees was deafening, and amplified my concern about falling trees and flying debris. I did not want to have a “Weather Channel” moment.
Although the wind was strong, the sun was now higher, and some sections of the road were warmed by the sun. This made a big difference. As I wound into and out of the side canyons, the temperature varied from the high 30s to the low 50s. In two places there were small, dirty patches of icy snow.
Ironically, the wind and temperature were relatively moderate on the summit of South Mt. Hawkins! After taking a few photos, I descended the “Ridge Trail” to the South Mt. Hawkins trail/road, and made my way back to the Windy Gap Trail and the trailhead.
Was that thunder? I warily eyed the dark clouds over the mountains and pondered the situation.
I was about halfway to the top of the Chumash Trail and was planning to run along the crest to Rocky Peak. The run had started in short sleeves and sunshine, but it was pretty obvious that wasn’t going to last.
Chumash Trail about a mile from the trailhead
A cold upper-level low had brought badly needed rain to the area for the past two days. The low was moving off to the east, but there was still a chance of afternoon showers and maybe even a thunderstorm.
It was the “thunderstorm” part that I needed to pay attention to. I had enough gear to deal with a downpour and cooling temps, but electrical storms are no fun at all.
I decided to continue to the top of the Chumash Trail and reassess. As I worked up the trail, I pictured the counterclockwise circulation around the low, and how convective cells develop over the mountains and then dissipate as they drift south. The concern was that the cells don’t always dissipate.
Rocky Peak Road near Rocky Peak
It looked like things weren’t getting any better at the top of the Chumash Trail, but it wasn’t worse either. I hadn’t heard any thunder for a while, and most of the activity seemed to be a few miles to the west and east. Having been starved of stormy weather for much of the rain season, I turned right on Rocky Peak Road and headed south toward Rocky Peak.
The run from the Chumash Trailhead to Rocky Peak is a challenging mix of technical single-track trail and hilly fire road. There are wide-ranging views of Simi Valley & Simi Hills, the San Fernando Valley, Santa Monica Mountains, Ventura County mountains, and San Gabriel Mountains. On a clear day, the view can extend to the Channel Islands, Saddleback, and San Jacinto Peak.
NOAA radar mosaic at the time I was on Rocky Peak
The actual turnaround point for a run to “Rocky Peak” varies. Some like to turnaround at the high point of Rocky Peak Road that is near Rocky Peak. Most of the time, I turnaround at a viewpoint that is at the end of a spur trail that branches off from the high point of Rocky Peak Road. From time to time, it’s fun to hike over to Rocky Peak and scramble to the top. That’s a bit more involved and requires some route-finding.
I felt the first raindrops as I reached the high point on Rocky Peak Road and turned onto the spur trail that leads to the overlook. There was some increased development to the east, but it looked like there would be enough time to get over to Rocky Peak, take a couple of pics, and then head back.
Oat Mountain, shrouded by rain
I felt a little exposed on top of Rocky Peak. I hadn’t heard any thunder for the past hour, but a cell to the east was spouting heavy rain over the San Fernando Valley, which meant there was probably enough development to produce lightning. I took the title photo and a couple of others and hurriedly descended from the peak.
Back on Rock Peak Road, the sprinkles increased, and the showers became more steady as I ran north toward the Chumash Trail. Under the dark clouds, a raven perched on a large pinnacle cawed incessantly, either enjoying the rain or complaining about it. In the distance, a siren wailed down in the valley. It was cold, and I was very glad to have an extra shirt, sleeves, gloves and a light rain shell.
Mix of sun and rain on the Chumash Trail.
As I began the descent of the Chumash Trail, the sun briefly broke through the clouds, reflecting brightly on the wet sandstone rocks. I breathed deeply, relishing the smell of the cleansed air and wet chaparral, and continued down the trail.
It looks like Downtown Los Angeles (USC) is going to end February — one of the wettest months of the rain year — with only a trace of rain. The current rain year total for Los Angeles is 4.39 inches, which is about 39% of the normal total for this date.
It’s been one of those years where missed rain opportunities have often turned into strong offshore wind events. This chart from MesoWest shows the wind speed and direction for the past 30 days for the Malibu Hills RAWS. Since mid February there has been five wind events with sustained wind speeds over 30 mph and gusts over 50 mph.
Current forecasts suggest Los Angeles will see at least some rain in March, with the first chance around midweek. We’ll see!
