November 1, 2021 – Another weather system will bring light to moderate amounts of precipitation on Monday. More rain is expected after mid-week.
Discussion
Mid and high clouds have steadily increased across the region overnight, and some light precipitation has begun to show up on radar over Shasta County where a few gages have picked up a few hundredths of an inch of rain already. Otherwise, current temperatures are mostly a little milder compared to 24 hours ago and range from mainly the 40s in the mountains, to the mid 50s to lower 60s across the Central Valley.
A relatively low-impact weather system will move across the region today. Precipitation will be mostly light with high snow levels (generally above 8k ft), except across the far north end of the Sacramento Valley and the mountains to the north of Redding where southerly flow (gusts of 20-30 mph) will result in orographic enhancement of rain over Shasta County. QPF amounts of an inch or two will be possible over the mountains to the north of Redding while the northern Sacramento Valley may see 1/2 inch up to an inch of rain. Much of the remainder of the area will see considerably lighter QPF.
A bit of a break is expected Tuesday and Wednesday, with milder temperatures, before another weather system moves in Wednesday night and Thursday with generally light precipitation over the mountains.
Extended Discussion (Friday through Monday)
High pressure ridge builds over the area Friday through Saturday, bringing dry conditions to the region. Then, ensembles and clusters indicate that a trough pattern may develop Sunday into early next week with possible widespread precipitation. However, significant differences in timing and strength exists at this time. Have followed NBM guidance with precipitation potentially spreading into the area late Sunday. This pattern will also bring cooler temperatures.