San Francisco Bay north of the Bay Bridge, including San Pablo Bay, Suisun Bay, and West Delta, CA Marine Forecast
| Tonight...Sw Wind 10 To 15 Kt, Easing To 5 To 10 Kt Late. |
| Tue...Sw Wind 5 To 10 Kt, Rising To 10 To 15 Kt In The Afternoon. |
| Tue Night...Sw Wind 10 To 15 Kt. |
| Wed...Sw Wind 5 To 10 Kt. |
| Wed Night...Sw Wind 10 To 15 Kt. |
| Juneteenth...Sw Wind 10 To 15 Kt. |
| Thu Night...W Wind 15 To 20 Kt, Becoming Sw 10 To 15 Kt After Midnight. |
| Fri...W Wind 10 To 15 Kt, Rising To 15 To 20 Kt In The Afternoon. |
| Fri Night...W Wind 15 To 20 Kt. |
| Sat...W Wind 10 To 15 Kt, Rising To 15 To 20 Kt In The Afternoon. |
| Sat Night...W Wind 10 To 15 Kt. |
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Area Forecast Discussion National Weather Service San Francisco CA 1028pm PDT Monday Jun 16 2025 Issued at 819pm PDT Monday Jun 16 2025 The evening weather balloon surprised us with dry air all the way to the surface. The PW was measured at 0.39", which is in the lowest 5% of historical observations for the month of June. With this dry air, the skies are totally clear. There is still some marine influence due to onshore winds, but the marine layer has compressed to around 1,200 feet from 1,700 this morning. Even within this layer, the humidity is much lower than normal, and it's likely that most areas will stay cloud free through the night. Clear skies and dry air will likely lead to a chilly morning, but near normal 850 mb temperature should keep the low temperature records safe tonight. .SHORT TERM... (This evening through Tuesday) Issued at 214pm PDT Monday Jun 16 2025 A weak upper level trough continues to track across the PacNW and northern CA today, with upper level ridging beginning to build in for Tuesday. This will be the start of a brief warming trend putting us closer to our seasonal highs for Tuesday. The forecast challenge for this period will be trying to figure out the depth of the marine layer and the expansion of the stratus. Guidance has it varying between 1000-1700ft for the period, with the best chances for stratus redeveloping along the San Mateo and Central Coast. Long Term (Tuesday night through next Sunday) Issued at 214pm PDT Monday Jun 16 2025 Upper level ridging holds through Wednesday with the next hint of height falls occuring late Wednesday into Thursday. An upper level low is slated to slide down the western Canadian cost and enter the PacNW for the weekend. This will lead to a period of troughiness and temperatures falling to near normal or just below normal. Expect the summer time stratus to return, with the fine tuning of its arrival occuring as we get closer to the later portion of the work week and Marine (Tonight through next Sunday) Issued at 1028pm PDT Monday Jun 16 2025 Gusty northwest winds continue across most of the waters along with moderate to rough seas. These conditions look to last through the week and into the weekend with slightly increased swell heights. Gale force gusts will occur near the coastal jet regions of Point Reyes and Point Sur in the afternoons and look to linger into the evenings for much of the forecast. NOAA San Francisco Bay Area Office: Watches - Warnings - Advisories CA...None. PZ...Small Craft Advisory until 3am PDT Tuesday for Mry Bay-SF Bay N of Bay Bridge. Small Craft Advisory from 3pm to 9pm PDT Tuesday for Mry Bay. Gale Warning until 3am PDT Tuesday for Pt Arena to Pt Reyes 0- 10 nm. Small Craft Advisory until 3am PDT Wednesday for Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm. Gale Warning until 3am PDT Wednesday for Pt Pinos to Pt Piedras Blancas 0-10 nm. x.com/nwsbayarea |
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