A deerweed superbloom has emerged in the western Santa Monica Mountains this May, covering hillsides with a multitude of small yellow flowers.
The extensive bloom is occurring near the end of a two-year period that is the wettest in Los Angeles in over a century.
It had rained a few hundredths overnight, and even though it was May, the weather was decidedly March-like.
Raindrops glistened in the grass, and a little mud caked my shoes as I ran across Satwiwa. To the south, rugged Boney Mountain captured the first rays of the rising sun, a remnant cloud hiding its summit. I breathed deeply and thought, “This is going to be an outstanding run…”
Here’s an interactive, 3D-terrain view of the GPS track of the Mugu Peak – Wood Canyon – Hidden Pond Loop.
Some related posts:
– Soggy Shoes, Soppy La Jolla Valley, and Sensational Wildflowers
– Busy Mugu Peak
– Hidden Pond – Old Boney Loop
One of the e-mountain bikers commented, “That’s a lot of water!”
The three of us had arrived at the bank of Malibu Creek at the same time. There was a lot of water. The crossing must have been a real monster during some of this year’s storms, but this morning the creek was slow-moving and maybe 30-40 yards across. The main concern getting across would be slipping on the algae-covered rocks along the bottom and taking an unintended bath. I waded in.
How did I find myself wading across Malibu Creek on this brisk March morning? I was doing a convoluted variation of the Phantom Loop, enjoying the Spring scenery, and going where the trails and terrain took me.
What is the Phantom loop? For me, it’s any loop that starts at the Cistern Trailhead on Mulholland Highway and ends at the Phantom Trailhead on the other side of the highway. Or vice versa. And since it’s a loop, it could start/end at any trailhead on or near the loop.
There are many ways to complete this loop. Here’s an interactive 3D-terrain view of the shortest version I’ve done (7.3 miles), and here is a longer variation (24 miles).
My run started on the Cistern Trail shortly after dawn. I’d run through Reagan Ranch and then up the Lake Vista Trail to the overlook for an early morning view of Malibou Lake. From the overlook, I’d continued east on the Lake Vista and Deer Leg Trails, enjoying the blooms of the Ceanothus, Hummingbird Sage, and bush poppy along the way.
Just before the Deer Leg Trail descends from the crest, I stopped at another overlook to take in Malibu Creek’s stunning terrain. From the viewpoint, I could see the coast redwoods along Century Lake. A few of the tall trees survived the 2011-205 drought and the 2018 Woolsey Fire, including one young naturally germinated tree. Now we’re in a rare wet cycle. The past two years are among the wettest on record for Los Angeles — good news for the remaining trees!
From the overlook of Malibu Creek, I ran down to the Yearling Trail, turned right (east), and in about a hundred yards was at the top of the Cage Creek Trail. I followed this short trail down to Crags Road and Malibu Creek.
I thought there was a chance the seasonal bridge on the way to the M*A*S*H site might have already been reinstalled. It hadn’t, but a pile of limbs and logs spanned the gap across the creek.
From the matchstick bridge, I turned around and ran east on Crags Road, past the Cage Creek Trail and Century Lake, and then down the road to the junction of High Road and Crags Road.
When doing the Phantom Loop, I usually continue east under the oaks on High Road to the Grassland Trail. But this morning, in keeping with today’s theme, I headed across the bridge — in the direction of the Visitor Center — and looked for a sign marking the start of the Chaparral Trail.
Only about a half-mile long, this obscure trail starts about 60-70 yards northeast of the Visitor Center and links to Mott Road/Century Mtwy, near Crags Road. It has unique views of Planet of the Apes Wall, Malibu Creek, and Goat Buttes. When I reached the trail’s end, I turned left on the road and followed it to the flooded crossing on Crags Road.
Wading into a stream is always a bit awkward. I decided to follow a rocky shoal where the water was about calf deep. As expected, the rocks were rounded and slimy. I didn’t have poles and the footing wasn’t the best, but I managed to get across without incident.
In a few steps, I was headed east and back on the route of the “standard” Phantom Loop. In about a tenth of a mile, I forked left off the main road and onto the Grasslands Trail.
I’m always surprised how quickly the squishiness of wet running shoes and socks goes away. (Today, I was running in Hoka Challenger ATR 7s with Injinji socks.) By the time I reached Mulholland Highway, my shoes and socks had air-dried and felt more or less normal. Crossing Mulholland Highway, I walked east a few yards and continued north on the North Grasslands Trail to the Liberty Canyon Trail.
I hadn’t run far in Liberty Canyon when I came to the Talepop Trail. It had been a long time since I had done the Talepop – Grasslands (Las Virgenes Fire Road) Loop. The hills were green, the sun shining, and the temperature perfect for running. What better time than now to get on it again? With the cool conditions, I had plenty of water to do the extra three to four miles and wouldn’t have to make a side trip to De Anza Park.
The loop was as pretty as I remembered it. Initially following an undulating ridge, the Talepop Trail eventually winds down to the grassy valley to the east and intersects Las Virgenes Fire Road. A left (north) turn here goes to De Anza Park; a right turn traverses classic oak grassland and leads back to the southern end of the Liberty Canyon Trail.
After completing the Talepop Grasslands loop, the remainder of the run followed the usual route of the Phantom Loop. It continues about 1.5 miles north on the Liberty Canyon Trail, but before reaching the trailhead, it jogs left (west), goes over Liberty Creek, and around to a short trail that connects to the Phantom Trail at a group of eucalyptus trees. My route in this area can be viewed by using our high-resolution, interactive 3D viewer and zooming in on the area near the Liberty Canyon Trailhead.
The Phantom Trail goes west up a canyon and then turns south, eventually reaching Mulholland Highway near the Cistern Trailhead. Once out of the canyon, the main trail crosses a use trail several times, so care must be taken to stay on route. The use trail more or less follows the ups and downs on the crest of the ridge, while the main trail switches from one side of the ridge to the other, avoiding unnecessary elevation gains.
The last time I ran this segment of trail — October 2023 — it was VERY overgrown (video). This time, thanks to the work of SMMTC volunteers, nearly all of the trail had been cleared. Many colorful wildflowers were in bloom on this stretch, including Ceanothus, Encelia, Wishbone bush, California poppy, owl’s clover, and paintbrush.
Here are a few photos (and notes) from the trail run, including some of the wildflowers seen along the trail.
Some related posts:
– Bulldog Loop Plus the Phantom Loop
– Redwoods, Raptors, and the Phantom Loop
– Malibu Creek State Park Scenic Loop
Following are some notes and photos from runs in Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch) during March 2024. Spring is here! The hills are green, goldfields and other wildflowers are blooming, and Las Virgenes Creek is flowing.
The first goldfields (Lasthenia gracilis) of 2024 began to bloom on Lasky Mesa at the end of February. Now, bright yellow patches of these “belly” flowers are scattered across the mesa, adding a brush of color to the roads and trails of Ahmanson Ranch. The cheery flowers usually disappear with the first spell of hot and dry weather. Looking ahead, more rain and cool weather are forecast Easter weekend, and extended temperature outlooks are mixed. Hopefully, the goldfields will be around for a few more weeks.
Some other wildflowers are also blooming. Blue Dicks usually flourish following a wet Winter, but this March are less widespread than usual. Red maids are also less numerous than normal and their flowers somewhat smaller. The elegant white flowers of Catalina mariposa lily are just starting to bloom.
Thanks to T.S. Hilary’s false Spring and copious Winter rain, the hills of Ahmanson Ranch have been green since early October.
With all the rain, small, shallow mudslides have been common along road cuts and other steep slopes of Ahmanson Ranch. The area has fine-grained silty soil. When saturated, it can generate a slurry of silt and debris. The numerous scars on the hillsides suggest this is a primary mechanism of erosion in the area.
After losing their leaves in December, the Valley Oaks at Ahmanson are now budding and sprouting. Some trees already have new leaves, while others are still bare-limbed. The period valley oaks are without leaves varies from year to year depending on rainfall, temperature, sunshine, and other factors.
Milk thistle thrives during wet years, and it’s been very wet. We’ve had two consecutive wet years, plus a tropical storm thrown in for good measure. The invasive is sprouting in areas where it doesn’t normally grow and growing prolifically in areas where it is established. In a few months, milk thistle may look like it did in May 2005, following the record 2004-2005 rain year.
Profuse rainfall is a two-edged sword. It revitalizes the ecosystem, turns the hills green, recharges the creeks, preserves the trees, produces wildflowers and more. But it can also be problematic — triggering slides, washing out and damaging trails, and promoting plant growth that chokes trails and increases the fire hazard.
At the moment, the roads and trails at Ahmanson are a bit rougher than normal, particularly in East Las Virgenes Canyon. Use and drier weather will gradually smooth out the ruts and rugosities, but we’re going to be picking foxtails from our socks for some time to come.
Upper Las Virgenes Creek is still flowing — including in the canyon’s upper reaches. Sometimes, there will even be a log or two in place to help keep your shoes dry.
I sometimes stretch at the info kiosk at the Victory trailhead before running. Today, as I placed my hands against one of the kiosk posts and started to stretch, I glanced down. Disturbingly close to my feet was a small snake. Adrenaline flowing, I checked the head and tail and then checked them again. I stepped back and began to breathe. It was a gopher snake. But it could have just as easily been a rattlesnake. In fact, later on that run, I encountered a baby rattlesnake. That day and the next (March 20 and 21), I saw a total of four gopher snakes and two Southern Pacific rattlesnakes.
– Ahmanson Ranch and Las Virgenes Creek After Six Days of Rain
– East Las Virgenes Canyon After a Seventh Day of Rain
– A Second Spring at Ahmanson Ranch
– Looking For Local Impacts of Tropical Storm Hilary
Rocky Peak Road is an exceptionally popular hiking and biking trail that starts at Santa Susana Pass, on the north side of the 118 Freeway. Regardless of the time of day or weather I ALWAYS see someone on this trail.
The plan for this afternoon’s run was to do an out and back on Rocky Peak Road to the top of the Chumash Trail (3.8 miles) or to Fossil Point (4.8 miles).
Another runner was finishing their workout as I started up the initial steep climb. Glistening in the warm sun, runoff from yesterday’s storm streaked some of the sandstone rocks, and ephemeral streams gurgled in the ravines and gullies.
Thanks to the sandstone geology, the dirt road wasn’t as muddy as most other local trails would be. Although heavily eroded from numerous Winter storms, it was still near the top of my list of places to run during periods of wet weather.
In the aftermath of yesterday’s storm the weather was spectacular. The temperature was warm enough to run in shorts and short-sleeves but still comfortable chugging up Rocky Peak Road’s steep hills. Puffy cumulus clouds filled the sky, creating postcard views at every turn.
More focused about getting up the hill than any weather concerns, I continued past the top of the Hummingbird Trail and through a gap in the rocks to a section of road with a good view of the San Fernando Valley and San Gabriel Mountains.
I’d been in a situation similar to this several times on Rocky Peak. As a storm moves east from Los Angeles, energy circulating around the low can sometimes result in “back-door” precipitation. In this scenario, clouds build-up over the mountains to the north and then drift over the San Fernando Valley, producing showers — and sometimes — thunderstorms.
But today’s scenario was a bit more complicated. A much larger area, extending east to the San Gabriel Mountains, was rapidly destabilizing. What had been a picturesque sky at the start of the run was now congested and ominous. The question wasn’t so much if it was going to rain, but if a thunderstorm was going to develop.
As I continued up the road, the sky darkened, the temperature cooled, and the wind became more gusty and fitful. A little chilly, I pulled on my arm sleeves. I laughed nervously as I mistook the roar of a passing jet for thunder. That was a jet, right?
When people say they are “doing Rocky Peak,” they are often referring to a high point on Rocky Peak Road that is west of the actual peak and about 2.4 miles from the trailhead. The final climb to this high point is a good one — gaining about 450 feet over three-quarters of a mile.
The road on this stretch is oriented in such a way that the terrain hides the view to the north. I was anxious to get to the top of the hill so I could get a better idea of what the weather was doing. As I worked up the road, I would occasionally feel the cold splash of a raindrop on one leg or the other.
Nearing the top, I thought, “I may get wet, but at least there’s been no thunder.” Within seconds of that proclamation, and as I reached the highest point, there was a long, loud, crackling peal of thunder.
One look at the sky and all thoughts of continuing to the Chumash Trail were gone. I turned around and started running down the hill, hoping to avoid the worst of the storm.
First one pea-sized hailstone hit the ground, then another, and then a sleety barrage of rain and hail poured from the sky. Instantly soaked, I shuddered as thunder echoed overhead and cold rain ran down my back. Muddy water flowed in rivulets down the sodden road and I cautioned myself to run fast, but not too fast.
I didn’t expect to outrun the storm, but hoped I might move to a part of it that was less intense. And that’s what happened. As I descended, the deluge gradually diminished. Most of the activity seemed to be behind me and a little to the east.
By the time I got down to the Hummingbird Trail, it was only sprinkling. The strong cell that had been over Rocky Peak had drifted southeast, and was now over the Porter Ranch – Northridge area.
National Weather Service Doppler Radar tells the story. At the start of the run there were scattered, mostly weak echoes. At 3:06 pm, as I was starting up the last long hill, a cell northwest of Rocky Peak was developing and drifting southeast. Over the next 16 minutes the cell continued to move southeastward and strengthen, and at 3:22 pm was over the Rocky Peak area. I turned around and started down as the cell moved into that area.
The cell over Rocky Peak continued to strengthen, and at 3:39 pm had drifted over the Porter Ranch – Northridge area. At 3:44 pm the NWS issued a Severe Thunderstorm Warning for Western Los Angeles County.
Here are a GOES-18 satellite loop and Doppler Radar loop that show the development and track of the Rocky Peak thunderstorm.
Some related posts:
– Rainy Weather Running on Rocky Peak Road
– Running Between Raindrops: Chumash Trailhead to Rocky Peak
– Thunderstorm
It’s uncommon to have back-to-back Rain Years with 20+ inches of rain in Los Angeles. During Rain Year 2022-2023, Downtown Los Angeles (USC) recorded 28.4 inches of rain — about two times normal. This rain year Los Angeles has already had about 21 inches of rain, so another big year is in progress.
Curious to see how the trail conditions compare to last year, on February 17th and 25th I ran the Trippet Ranch Loop in Topanga State Park.
The big surprise was that the fire roads on the loop — Fire Road #30, Eagle Springs Fire Road, and a short section of Eagle Rock Fire Road — generally fared better than last year. Fire Road #30 had some damage along it’s shoulder, but I did not see the numerous mudslides along these roads like last year.
The news on the trails was divided. One of the more unusual events occurred where the Garapito Trail crosses the east fork of Garapito Creek. A mudslide from a gully on the northwest side of the creek crossed the creek, and left a pile of debris on the trail. The stream may have been dammed by mud and debris for a short time. Farther up the trail, about a half-mile from Eagle Rock Fire Road, a section of the trail collapsed in a slide.
The Musch Trail was very muddy and wet in the usual places. There were a couple of slides along the trail, but all things considered, the trail was in OK shape. The Bent Arrow Trail remains closed as a result of previous storm damage.
Last year, the bloom of bigpod Ceanothus was well underway in early January. This year the bloom began about a month later but is now happening in a big way. Greenbark Ceanothus is also starting to bloom. Some peonies were blooming on an east-facing slope of the Garapito Trail, and a Fuchsia-flowered gooseberry was in bloom near Fire Road #30.
Here are some photos taken on these two runs.
Some related posts:
– Popular Trails in Topanga State Park Damaged by Winter Storms
– Wettest 14 Months in Los Angeles in 134 Years
– Rainy Season Trail Running on the Backbone Trail