Marine Weather and Tide Forecast for Port Costa, CA

KEY MESSAGES

* Today-Wednesday:

- Warming temperatures with areas of Moderate HeatRisk in the Valley and foothills by Wednesday as ridging develops, hottest over the northern Sacramento Valley.

-Probability of Valley High Temperatures on Wednesday > 100F: --Northern Sacramento Valley/Foothills & Eastern Portions of the Greater Sacramento Area: 40-80%

--Southern/Central Sacramento Valley & N. San Joaquin Valley: 20-45%

-Combination of hot weather with dry conditions may bring a brief period of locally elevated fire weather conditions, mainly across the northern Sacramento Valley.

*Thursday-This Weekend:

-Gradual cooling trend expected with stronger onshore flow Thursday-Friday. Strongest winds expected through the Delta and over the Sierra. South to west forecasted shifting to north to west winds over the weekend

-Elevated fire weather conditions expected across the northern Sacramento Valley late this week due a combination of low humidity and locally breezy winds with Friday into Sunday late morning being the worst forecasted period of conditions.

-Probability of wind gusts > 30 mph: *60-95% Friday across the Northern/Central Sacramento Valley *50-85% Saturday across the Sacramento Valley and Delta.

Changes from previous forecast
-Saturday's winds have trended stronger with continued elevated fire weather conditions expected.

AVIATION

VFR conditions with mostly clear skies will continue at TAF sites over the next 24 hours. Surface winds generally below 12 kts, except in the vicinity of the Delta and N San Joaquin areas, where there will be periodic gusts around 15-20 kts until 06z Wed with lingering gusts through the Delta through 12z Wed.

STO WATCHES/WARNINGS/ADVISORIES
None.