November 26-? West (CA) Warm/Dry Period

After a prolonged period of storms dropping down into California and an unusually wet November, it looks like the pattern is about to change with a 591DM ridge set to build into SW California. Some offshore flow will also send temps into the 80s in some areas west of the mountains.

November 4-? West (CA) Unsettled Pattern

As we enter November, the recent dry streak in California comes to an end with at least two cold low pressure systems set to dive down into the state. Showers are currently affecting Central CA set to move down into the southern part of the state through the overnight and early morning hours. Cold air aloft behind the front (-28C to -30C 500mb temps) will also allow for a chance of thunderstorm.

Over the weekend, there is another chance of some precipitation with a similar system diving down into the region. Later on, yet another, much stronger and wetter storm might possibly move into the area

Oct. 11-13th West Coast (California) Heatwave

As we head into next week, models are showing the possibility of the first significant pacific storm of the season to impact the West Coast with rain as far south as California. A few runs of the GFS have even brought rain as far south as SoCal, courtesy of a ~540DM low in the Pacific NW. In addition, some remnant moisture from former Hurricane Hilary could flow up into SoCal later this week and this weekend causing the possibility for a few showers and thunderstorms.

Sept. 14-? West Coast (CA) Troughs vs. Ridges

As we enter late July and early August, the west coast will be smudged in between a battle of troughs moving through the west coast and the large ridge in the middle of the country. The marine layer will make appearances as the troughs deepen and warmup will ensue when the ridge dominates. Temperatures will range from below to near normal. At the present moment, the marine layer is firmly entrenched at the coast.

Another feature to watch will be the remnants of Hurricane Dora as it moves NW.

June 24 - ? West (CA) Troughs/June Gloom

As we enter late may, the dry season is starting to settle in along with the typical night through morning low clouds regime. A trough will skirt through the west tomorrow, followed by a warm up towards Friday as a ridge off the coast of western mexico pushes north. The long range points to possible continued troughs or a cutoff low moving through the west coast, resulting in continuing onshore flow and a deeper marine layer. No major heatwaves in sight for the moment.