Category Archives: weather|southern california

Three Points Loop Following the Reopening of Angeles Crest Highway

Bracken fern turning color at Waterman Meadow is a sure sign of Autumn.
Waterman Meadow

I was beginning to wonder if I would get a chance to do the Three Points Loop around Mt. Waterman this year. Angeles Crest Highway had been closed from Red Box to Vincent Gap for many months, and CalTrans projected it might not open until Thanksgiving.

That’s why Friday (November 3) I was excited to hear Angeles Crest Highway had reopened between Upper Big Tujunga Rd. and Islip Saddle.

Alpenglow on the San Gabriels' Front Range peaks.
Alpenglow on the San Gabriels’ Front Range peaks.

At dawn, a couple days later, I pulled into the Three Points parking lot, put on some sunscreen, grabbed my pack, and set out to see what was happening on the Three Points loop around Mt. Waterman.

I’d done the loop many times and in many situations — clockwise, counterclockwise, after the Station Fire closure, after the Bobcat Fire closure, with snow at the higher elevations, in hot weather and in cold. When the trails are in good shape and the weather isn’t too hot, the 20-mile loop is an outstanding trail run. Today, it was a challenge just to complete the loop.

Gilia along the Burkhart Trail. November 2023.
Gilia along the Burkhart Trail.

In many areas of Southern California, a wet 2022-2023 rainy season and Tropical Storm Hilary’s rain produced two seasons of Spring-like growth. One of the effects of the rain was the growth of wildflowers usually seen in the Spring, including seep monkeyflower, golden yarrow, gilia, grape soda lupine, and little paintbrush. It was strange to see a bumblebee buzzing from flower to flower of a Grinnell’s penstemon at 7250′ on Mt. Waterman in November.

At lower elevation, sections of Three Points – Mt. Waterman Trail (10W04) were overgrown with mountain whitethorn — requiring several “grin and bear it” passages. Higher, long stretches of the little-used path were covered with a second season of grass. This made route-finding difficult, particularly where the trail descends to the Twin Peaks Trail junction.

Twin Peaks from the Buckhorn - Mt. Waterman Trail.
Twin Peaks from the Buckhorn – Mt. Waterman Trail.

It was an intriguing puzzle to solve, and eventually I made it to the junction of the summit trail and the trail down to Angeles Crest Highway, near Buckhorn (10W05). The trail down to Buckhorn sees much more use than the trail from Three Points and is much better defined. Besides a couple of downed trees, the run down was one of the more enjoyable parts of the loop. The trail is usually very busy, but I didn’t encounter anyone coming up the trail.

As expected, Buckhorn Campground was closed and no water was available. It was a warm day — around 75 degrees — but with the November sun low in the sky, not as warm as 75 degrees in July. If I needed more water, there were several places I could refill.

Cooper Canyon Falls, November 2023.
Cooper Canyon Falls (video)

The Burkhart Trail (below Buckhorn) was the only place I encountered a few hikers. They were returning from Cooper Canyon Falls. When I got down to the PCT and saw how much water was in the creek, I did the short side trip to the falls and took this video snapshot. It’s unusual for the falls to be flowing this time of year.

After checking out the falls, I resumed my westward journey on the PCT. Within feet of the creek crossing, an ugly tangle of fallen trees completely blocked the trail. This was just the first of several problems on the PCT between the Burkhart Trail junction and Cooper Canyon Camp. There were the usual downed trees, but there were also several sections of badly overgrown trail. These green thickets were generally adjacent to the creek, where the trail had been (or still was) wet.

Willows along the creek near Cooper Canyon Trail Camp.
Willows along the creek near Cooper Canyon Trail Camp.

Needing water, and to empty the debris from my shoes, I stopped for a few minutes at Cooper Canyon Trail Camp. Several campsites are nestled in a pleasant area along the creek. With Angeles Crest Highway open, I thought I might see someone here, but like Buckhorn Campground, it was empty.

After reaching Cloudburst Summit, the remainder of the run was more or less usual for the loop. There was some Poodle-dog bush and a small rockslide along the PCT on the way to Camp Glenwood, but neither were an issue. The run was more challenging than usual — and a bit slower — but it had been (mostly) fun and fascinating to work through it.

Here are a few photos taken along the way.

Some related posts:
After the Bobcat and Station Fires: Three Points Loop Around Mt. Waterman (Slideshow, 3D Terrain Maps)
Cool Weather, Old Trees, Grape Soda Lupine and a Restored Trail
Lemon Lilies, Tree Rings and More Heat Training on the Three Points Loop
Three Points Loop Adventure – July 2020

Seventh Wettest Water Year Results in Spring-Like Scenery Along L.A. Area Trails

California fuchsia along Fire Road #30 in Topanga State Park
California fuchsia along Fire Road #30, near the Hub.

Downtown Los Angeles (USC) finished the 2022-2023 Water Year with 31.07 inches of rain, making it the seventh wettest on record in Los Angeles. The rainfall total includes about three inches of rain from former Hurricane Hilary as it moved through Southern California as a rare tropical storm and post-tropical cyclone.

Canyon sunflower blooming out of season along Fire Road #30 in Topanga State Park.
Canyon sunflower blooming out of season along Fire Road #30.

The effects of all that rain can be seen on just about any trail in Southern California. It has resulted in a false Spring in many areas, with greening hills, out-of-season wildflowers, flowing creeks, and profuse growth throughout the area.

This morning, I returned to the Top of Reseda and Topanga State Park to do a variation of the Trippet Ranch Loop and continue exploring and enjoying the unusual conditions.

After running up to the Hub, this variation does an out and back to Temescal Peak and Temescal Lookout. After returning to the Hub, the route continues on Eagle Springs Fire Road down to Trippet Ranch. From Trippet Ranch, it works back to the Top of Reseda using the Musch and Garapito Trails and connecting sections of fire road. This interactive, 3D terrain map shows a GPS track of the trail run.

Dodder growing on laurel sumac in October 2023 on the Musch Trail in Topanga State Park.
Dodder growing on laurel sumac on the Musch Trail.

Visiting Temescal Peak and Temescal Lookout increases the run’s mileage from 12.5 miles to 16. On a clear day, the runner is rewarded with far-reaching views of the coast, West L.A., Downtown, and the surrounding mountains.

While most of the roads and trails on this route are frequently used and in decent condition, the Garapito Trail has been overgrown all Summer. As of October 8, it was still overgrown. Some people I’ve encountered on the trail were OK with this, but others haven’t been so happy. If desired, the trail can be bypassed by continuing to the Hub on Eagle Rock Fire Road and retracing your route back to the Top of Reseda.

Here are a few photos (and notes) taken on the run.

Some related posts:
A Second Spring at Ahmanson Ranch
Lake Vista Ridge, the Forest Trail, and September Wildflowers
Looking For Local Impacts of Tropical Storm Hilary

A Second Spring at Ahmanson Ranch

Lupine at Ahmanson Ranch blooming in October as a result of the rainfall from T.S. Hilary
Lupine blooming in October!

It’s been about a month and a half since Tropical Storm Hilary soaked Southern California with record-setting rainfall.

The unusual amount of Summer rain has resulted in a second Spring at Ahmanson Ranch, with some plants behaving as if it were March or April.

Not only are plants growing as if it were Spring, some are flowering. The lupine pictured above usually blooms at Ahmanson Ranch in March, April, and May. Now, as a result of T.S. Hilary’s rain, it’s flowering in October!

Those plants that usually flower in the Fall, such as telegraph weed, vinegar weed, and common sunflower, are much more widespread than usual.

Here are a few photos of the unusual conditions at Ahmanson Ranch (Upper Las Virgenes Canyon Open Space Preserve).

Spring-like conditions are present in many areas of Southern California. On Sunday, I ran the Phantom Trail in Malibu Creek State Park. Some sections were so overgrown that it was challenging just to navigate the trail, much less run it. Ticks were also a problem.

Some related posts:
Lake Vista Ridge, the Forest Trail, and September Wildflowers
Looking For Local Impacts of Tropical Storm Hilary

Looking For Local Impacts of Tropical Storm Hilary

New grass in Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch), 10 days after the passage of Tropical Storm Hilary
Rare Summer grass at Ahmanson Ranch as a result of Hilary’s rain.

Update September 14, 2023. Mustard is sprouting along Ahmanson’s fire roads, and more surprising — a few mushrooms.

Update September 8, 2023. The new grass from T.S. Hilary’s rain is coming in nicely at Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch).

Tropical storms are a different kind of weather beast than usually seen in Southern California. The warmer air associated with such storms can carry much more water and produce unusually high amounts of precipitation.

The first hints of Hilary approaching Los Angeles
The first hints of Hilary approaching Los Angeles.

The rain resulting from Tropical Storm Hilary shattered many daily and monthly records. Over decades of record keeping, most stations in the greater Los Angeles area had previously measured only a trace of rain on August 20 or 21, or at best, a few hundredths of an inch. Some stations had never recorded any rain on these days.

This Google Earth image with precipitation data from the California-Nevada River Forecast Center (CNRFC) shows the remarkable rainfall totals across Southern California for the 24-hour period ending at 5:00 a.m. on Monday, August 21, 2023.

A little mud in Las Virgenes Canyon after Tropical Storm Hilary. August 22, 2023.
A little mud in Las Virgenes Canyon.

The highest rainfall amounts occurred where the precipitation was enhanced by mountainous terrain. The northeast-facing slopes of the eastern San Gabriel Mountains, near Wrightwood, were ideally positioned in Hilary’s circulation to enhance rainfall. The Big Pine RAWS recorded over 6 inches of rain for the storm, Lewis Ranch slightly over 7 inches, and Lytle Creek nearly 10 inches.

Detailed observation and impact reports for Hilary are available from NWS Los Angeles/Oxnard, NWS San Diego and the Center for Western Weather and Water Extremes.

Crossing of Las Virgenes Creek, south of the pipeline station, on August 22, 2023, following Tropical Storm Hilary.
This crossing of Las Virgenes Creek was about the same as before Hilary.

Curious to see some of the local impacts of the storm, I ran at Ahmanson Ranch on August 22 and then a few days later at Malibu Creek State Park.

My West Hills weather station, about three miles from Ahmanson Ranch’s Victory Trailhead, recorded 3.86 inches of rain for the storm. After an initial technical hiccup, the Cheeseboro RAWS, overlooking Las Virgenes Canyon, recorded 3.52 inches of rain. This and other data suggest rainfall amounts in the Ahmanson area of at least 3.5 – 4.5 inches.

My Ahmanson run started at the Victory trailhead, went out East Las Virgenes Canyon, through part of Las Virgenes Canyon, and then up to Lasky Mesa. With that much rain, I was sure I would be wallowing in the mud and wading the creek crossings. But my shoes didn’t even get muddy!

Dry streambed of Las Virgenes Creek, north of the Las Virgenes Trailhead, on August 22, 2023, after Tropical Storm Hilary
Dry streambed of Las Virgenes Creek, north of the Las Virgenes Trailhead

There was certainly some mud, puddles, and a little erosion, but the impact of Hilary on Ahmanson was surprisingly minor. The ground must have been desiccated because Las Virgenes Creek had almost no increase in flow. The creek crossings near the pipeline station and south of the station were essentially the same as before Hilary. Even more surprising, there was no water at the crossing a little north of the Las Virgenes Trailhead.

As Hilary moved northward in California, the counterclockwise circulation of the storm increased the rainfall in the Santa Monica Mountains. Automated RAWS stations in Topanga, the Malibu Hills, and in Malibu Canyon recorded 4.0 to 4.5 inches of rain during the storm. CNRFC gridded precipitation data indicated higher amounts in some parts of the range.

Las Virgenes Creek, about 5 miles downstream of Ahmanson Ranch, in Malibu Creek State Park, a few days after the passage of Tropical Storm Hilary.
Las Virgenes Creek in Malibu Creek State Park, about 5 miles downstream of Ahmanson Ranch.

On August 27, I ran the Bulldog Loop in Malibu Creek State Park. The run started at a small parking area at the junction of Malibu Canyon & Piuma Roads. As I was running up the Tapia Spur Trail, I wondered if State Parks had — as a precaution — removed the seasonal bridge across Malibu Creek on the Crags Road Trail. On August 19, the day before Hilary drenched the area, the bridge had been in place for the Bulldog Ultra. If it wasn’t removed, did Malibu Creek get high enough to damage it?

Once again, I need not have worried. The bridge was just fine, and the reeds in the water near the bridge suggested only a modest increase in streamflow.

Slopes along Bulldog fire road following Tropical Storm Hilary.
It’s unusual for the slopes along Bulldog fire road to be this green in Summer!

It looked like Malibu Creek State Park received more rain than Ahmanson Ranch. There was slightly more erosion on the dirt roads and some small sluffs/slides, including one tree that slid onto Mesa Peak Mtwy fire road. A tree had also fallen near the beginning of the Forest Trail.

Back at Ahmanson on August 31, things were drying out, but it was beginning to look like Spring. Grass was sprouting all over Ahmanson Ranch. It will be interesting to see if the grass survives the inevitable heat and grows enough to turn the hills green. The little bit of rain and cooler weather over Labor Day weekend will help. Some out-of-season wildflowers could also result from a false Spring.

Yesterday, I did a run in Topanga State Park, and the story was much the same. There was some minor erosion on the fire roads, but none of the larger sluffs and slides seen during the rainy season. There was no new damage to the Musch or Garapito Trails. It did look like the flow had increased on Garapito Creek with Hilary’s rain, and there was a still little water in the mainstem of the creek.

Dealing with the Heat on Strawberry Peak and San Gabriel Peak

Early morning view of Strawberry Peak from the Strawberry Trail, near Lawlor Saddle.
Strawberry Peak from the Strawberry Trail, near Lawlor Saddle.

Last weekend I’d considered doing a run from Red Box, but finally decided to go to higher elevation and do a combination run and climb.

Blazing star near the bottom of the Bill Riley/Mt. Disappointment Trail
Blazing star.

The puzzle to solve this weekend was to find a run that was closer to home, higher than the Santa Monica Mountains, and had a “decent amount” of elevation gain. The solution put me right back at Red Box, doing two of the most popular peaks in the Front Range — Strawberry Peak (6164′) and San Gabriel Peak (6161′).

I’d done these peaks as a duo several years ago. The basic details remain the same and are described in this post.

The main difference is that the 2018 run/hike was on a cool day in March, rather than a hot day in August. In 2018, I did San Gabriel Peak first, then Strawberry. The order didn’t matter. The temperature on both peaks that day was mostly in the 40s.

Mt. Disappointment (left) and Strawberry Peak from the San Gabriel Peak Trail.
Mt. Disappointment (left) and Strawberry Peak from the San Gabriel Peak Trail.

Today, it was essential to do Strawberry first, and get started early. The use trail between Lawlor Saddle and Strawberry’s summit faces south and east, and has very little shade. It’s steep and strenuous an no fun at all in the hot sun.

I left the Red Box parking lot at about 6:00 a.m. On the way up, the temperature ranged from the mid-50s to the mid-70s. On the way down, in some places it was already in the 90s. While it was hot in the sun on the upper part of the mountain on the descent, the traverse around Mt. Lawlor on the Strawberry Trail was still mostly in the shade and a relatively cool 75 to 80 degrees.

San Gabriel Peak isn’t the solar oven that Strawberry is. Much of the Bill Riley/Mt. Disappointment Trail faces north and a scrub oak forest provides some shade. Continuing up San Gabriel Peak after doing Strawberry, the temps were generally in the low to mid-80s.

Some related posts: Front Range Duo: San Gabriel Peak and Strawberry Peak, Blazing Star

Ahmanson Ranch Hot Seat

Ahmanson Ranch Hot Seat. Photography by Gary Valle'.

It was a little past 3:00 in the afternoon when I passed this straight-backed wooden chair along an Ahmanson Ranch trail. The Tempe thermometer clipped to my pack read over 100 degrees.

It gets REALLY hot at Ahmanson Ranch (Upper Las Virgenes Canyon Open Space Preserve). In the direct sun the temperature can be 10°F-15°F hotter than in the shade, and there is very little shade at Ahmanson. In-the-sun temperatures of 100°F or more are common in the Summer but can occur just about any time of the year.

There are two weather stations I use to get an idea of the weather conditions at Ahmanson Ranch — the Cheeseboro RAWS and Valley Circle Estates Weather Underground station. Weather station thermometers are usually shielded from the direct sun by a white, ventilated enclosure. The Cheeseboro RAWS includes a measurement of the “Fuel Temperature.” This is generally a better indication of the temperature experienced by a runner, hiker, or rider in the direct sun.

Update on July 29, 2023. Rounding the temperature to whole degrees, my West Hills weather station recorded a high of 100°F, or higher, for 15 consecutive days this July (7/13/23 to 7/27/23). The station is about three miles from the Victory Trailhead at Ahmanson Ranch.

Some related posts: Some Summers Are Hotter than Others, Run to the Cheeseboro Remote Automated Weather Station