Significant Rain Showers Forecasted For The West Coast

Bryan Dijkhuizen

The presence of high pressure over the area will result in temperatures that are somewhat above average through the middle of the week but with a significant amount of cloud cover on most days.

In addition to giving the possibility of rain on Thursday, a slow-moving Pacific weather system off the West Coast will continue to bring moisture and clouds into the area over the holiday weekend.

An unsettled weather pattern is expected to persist into the following weekend, with temperatures expected to decrease somewhat and the possibility of further precipitation increasing in the process. A blocking pattern is expected to impact the northern Pacific and most of North America for the next week and maybe longer, keeping upper-level troughing entrenched over the eastern Pacific and into the western United States.

This system will deliver significant precipitation to most West Coast and, most likely, into the Interior West. Still, it will not bring significant precipitation to the Desert Southwest.

An upper-level low that has stalled west of Oregon and California has started to stream into our area at the southern edge of the low. Still, an upper-level ridge is expected to stay in place over our region for at least a couple of more days due to the stalling low.

The weather prediction for Tuesday and Wednesday is the mostly overcast sky and temperatures that are somewhat above typical for this time of year.

The most recent NBM PoPs have continued to push back the time of rain possibilities later this week, emphasizing the nights of Thursday and Friday this week.

As of Thursday, deep sub-tropical moisture is expected to be over our area at various periods, but major rainfall quantities are still improbable because of a general lack of coordinated upper-level dynamics/forced ascent.

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