Marine Weather and Tide Forecast for Pittsburg, CA

DISCUSSION

Today

Dry and mild conditions once again continue across interior NorCal, with any lingering patches of fog dissipating over the next couple of hours. Patchy fog is likely to continue the next several days, with a 50-70% chance of visibilities less than a half-mile in the central and southern Sacramento Valley, and northern San Joaquin Valley, on Thursday morning. Valley highs continue around the low to mid 60s for the next week, with slightly warmer temperatures in the foothills (into the upper 60s). Highest temperatures in the northern Sacramento Valley and in the foothills.

The Week Ahead

A stationary ridge continues to amplify across the West Coast into this week bringing potential for persistent low stratus and fog to the Valley. Areas above the stratus (upper foothills and mountains) will see above normal temperatures and dry conditions with cooler temperatures below the clouds and fog, as long as the stratus holds in place in the Valley. Low daytime humidity and limited overnight recovery will be likely in higher elevation areas as well. Similar chances today for breezy upper foothills and mountain winds on Thursday with 50-80% chance of gusts 30 MPH or greater. Gustier winds will be fairly limited by elevation, with only light winds expected below ~2000 feet. If these winds extend into the lower Valley elevations, it may be a limiting factor for fog and stratus development but is not forecasted at this time. Today and Thursday look to be the warmest days of the week.

AVIATION
Improving MVFR/VFR conditions continue through around 06z Thursday at TAF sites as dry weather and light winds prevail.
MVFR/IFR/LIFR conditions in BR/FG then expected to return after 06z at SCK, MOD, and Sacramento sites, with some potential for lingering MVFR/IFR cigs as BR/FG dissipates Thursday morning.
Breezy to gusty downslope winds anticipated over the Sierra after 00z Thursday with gusts up to 20 to 25 kts.

STO WATCHES/WARNINGS/ADVISORIES
None.