Warm and dry temperatures are expected today and Wednesday, with unsettled weather moving into the state by the end of the week.
After a storm system passes through, windy winds and colder temperatures are expected to prevail, with a potential for rain and snow showers starting Thursday and continuing through the holiday weekend and into the beginning of next week.
The forecast is for another day of good weather under high pressure, with mid-to upper-level cloudiness streaming in from a storm system over the Pacific Ocean on Sunday.
Surface pressure gradients will remain modest in the presence of light winds and temperatures that are slightly above average. The weather forecast for the Christmas holiday weekend will be our primary emphasis since it will change throughout the weekend.
However, there will be no update until the customary afternoon forecast release.
Pleasant weather is anticipated through Wednesday as an upper-level ridge over the southwestern United States continues to deliver temperatures that are above average for this time of year for the region.
Cloud cover tonight will also aid in preventing too low temperatures in the early morning hours in the morning. It is possible to anticipate light breezes.
As a result of a longwave trough to our west steadily moving eastward, upper-level pressure gradients will become more compact, and the ridge axis will shift to a new location by Thursday afternoon.
A considerable amount of moisture will be advected into the area as a result of the longwave trough that is positioned just off the coast of California over the Pacific.
Temperatures will drop as a result of the shift in weather patterns to more seasonal averages, as will precipitation. Several shortwave troughs are expected to pass over northern Arizona, with the first trough expected to arrive on Thursday.
Surface winds will increase intensity out of the south-southwest later on Thursday afternoon and evening. Strong gusty conditions, particularly throughout the high hills, persist until Saturday morning.
Showers and thunderstorms are expected to arrive in the forecast on Thursday, with the most vital possibilities for precipitation occurring in the early morning hours of Friday morning along the ridgelines and over high terrain.
Currently, the bulk of the precipitation is expected to fall as rain, with snow mainly expected to accumulate at the highest elevations during the first few days.