The National Weather Service (NWS) in San Francisco is forecasting a shift in weather patterns that will bring wet and windy conditions next week, particularly from December 22 to 26. While the specifics on timing and rainfall totals are still somewhat unclear, there is growing confidence that umbrella-worthy weather is on its way, and you may want to prepare for a wet holiday season, as noted in the National Weather Service update.
In the meantime, a Dense Fog Advisory is in effect until 11 AM today for a large sweep of the region, including the North Bay Interior Valleys, East Bay Interior Valleys, and down to the Monterey Bay; the low visibility from this dense fog is causing less-than-ideal driving conditions, the National Weather Service warns that if you're commuting, be sure to allow extra drive time to reach your destinations safely, make sure you use your low-beam headlights, and maintain a safe following distance, now isn't the time to rush.
According to the 7-day forecast, today should see the skies gradually clearing up, although patchy fog is expected again after 1 a.m. This pattern of foggy mornings and intermittent rain is predicted to continue throughout the week. Tomorrow, there is a 60% chance of rain, mainly after 4 PM, and on Wednesday, rain is likely before 10 AM, a trend that aligns with the larger picture of shifting patterns outlined by the NWS.
As for boaters and mariners, the marine forecast suggests southerly flow will prevail north of Pigeon Point with a Dense Fog Advisory also cast over the bays, conditions that may result in slower clearing from the San Francisco Bay to the West Delta, and with light to moderate seas building into rough conditions by midweek, it seems like staying ashore might save you a headache. The NWS San Francisco advises caution and perhaps a temporary respite from any maritime plans you may have.
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