With Pacific Coast beach-goers and maritime enthusiasts on high alert, the National Weather Service San Francisco has issued a Beach Hazards Statement, effective from Sunday afternoon through Monday evening, cautioning against powerful northwest swells projected to produce waves ranging from 10 to 14 feet; the agency unequivocally advises to "Never turn your back on the ocean," according to the NWS San Francisco website. Concurrently, inland areas prepare for a shift in weather patterns, marking the onset of heightened fire weather conditions forecasted to span from Sunday to Thursday. This suggests a potential volatility in California’s climate narrative.
The changing conditions will commence with ongoing rain showers, predicted to subside by Saturday morning. This precursor of moisture sets a stage for the roads, which shall present a risk of slickness due to oil on the asphalt creating a hazardous separation with water. The short-term forecast from NWS San Francisco advises allowing extra travel time on Saturday morning. It reminds drivers that when windshield wipers are in use, headlights should be on, as stated in the Area Forecast Discussion. This scenario transitions swiftly into the subsequent threat of intensified fire weather, spurred by the dehydrating influence of strong northerly winds that are anticipated to bear down starting Sunday morning and stretching through the early week.
Aviation interests, particularly in the Russian River Basin, where fog has begun to surface, as seen on the Alert California Siri camera, have also been placed on notice. Visibility may be compromised, for which a mid-morning clearing time was hazarded in TAF reports. Thus, the Santa Rosa area, as mentioned in the Area Forecast Discussion, remains an area of focused watchfulness.
For mariners, the Marine forecast reflects the compounding challenges of strong Northwest winds reaching gale-force gusts and rough wind waves, riding the back of a cold front, culminating in significantly heightened wave heights by the advent of Sunday night into Monday. These robust swells, symphonic with force, are another testament to the ocean's unforgiving might, as iterated by NWS San Francisco’s advisories, cited from the Area Forecast Discussion.