Marine Weather and Tide Forecast for Valley Springs, CA

DISCUSSION

...Today-Tonight (9/24)... Sunny skies are being observed across Northern California this afternoon, with just some thin cirrus clouds ahead an approaching trough with a weakening cold front.
Temperatures for the week peak today, this afternoon currently reaching the upper 80s to low 90s across the Valley, warmest in the northern San Joaquin Valley, where there are areas of Moderate HeatRisk. Winds are light now, but onshore flow will increase in the Delta and over the mountains this evening tonight as a trough passes to the north, through the Pacific Northwest.

While the trough passage will be dry for the vast majority of the area, there is a low, nonzero chance (around 10%) of isolated showers along the northwestern edges of Shasta County this evening into early Friday. Most of the rain is expected to remain farther north and west.

...Friday-Sunday (9/25-9/27)...
The trough will bring additional periods of breezy to gusty winds Friday into Saturday, with winds mainly out of the west- southwest on Friday, then shifting out of the north northeast on Saturday for the northern and central Sacramento Valley and adjacent mountains and foothills, with gusts in those areas 20 to 30 mph. On Saturday the combination of gusty winds and low afternoon humidity percents in the upper teens to low 20s bring a several hours of elevated fire weather conditions.

Additional periods of breezy to gusty southerly flow area expected on Sunday as the trough deepens and pushes through Northern California, mainly over the Sierra. Models continue to favor a continued dry pattern, though the pattern suggests the we can't rule out the possibility of stray mountain showers.

...Monday-Wednesday (9/28-9/30)...
Periods of breezy northerly flow are forecast to develop on Monday through the Sacramento Valley as the aforementioned trough tracks over the Desert Southwest, with downsloping northeasterly to easterly winds over the Sierra. Breezy north winds through the Valley and downsloping winds in the Sierra are favored on Tuesday as well. These will bring the potential for more significant elevated fire weather conditions. Temperatures remain on track to trend warmer through the week as weak ridging builds over interior NorCal.

AVIATION

VFR conditions continue through the rest of today and into tonight, with mostly clear skies. Sustained winds will be generally less than 12 kts. Breezier Delta winds are expected tonight into Friday through 18Z.

STO WATCHES/WARNINGS/ADVISORIES
None.