Point Arena to Point Reyes CA out 10 NM Marine Forecast
| Today...Nw Wind 15 To 25 Kt. Seas 5 To 7 Ft, Building To 7 To 9 Ft This Afternoon. Wave Detail: Nw 8 Ft At 9 Seconds And S 2 Ft At 16 Seconds. |
| Tonight...Nw Wind 20 To 25 Kt, Easing To 15 To 20 Kt After Midnight. Seas 7 To 10 Ft. Wave Detail: Nw 9 Ft At 9 Seconds And S 2 Ft At 16 Seconds. |
| Wed...Nw Wind 10 To 15 Kt. Seas 6 To 8 Ft. Wave Detail: Nw 8 Ft At 9 Seconds And Sw 2 Ft At 15 Seconds. |
| Wed Night...Nw Wind 10 To 15 Kt. Seas 5 To 8 Ft. Wave Detail: Nw 7 Ft At 9 Seconds And Sw 2 Ft At 15 Seconds. |
| Thu...Nw Wind 10 To 15 Kt. Seas 5 To 7 Ft. Wave Detail: Nw 6 Ft At 11 Seconds And Sw 2 Ft At 15 Seconds. |
| Thu Night...Nw Wind 15 To 20 Kt, Easing To 10 To 15 Kt After Midnight. Seas 4 To 6 Ft. Wave Detail: Nw 5 Ft At 8 Seconds And Sw 2 Ft At 14 Seconds. |
| Fri...Nw Wind 10 To 15 Kt, Rising To 15 To 20 Kt In The Afternoon. Seas 6 To 7 Ft, Building To 7 To 9 Ft In The Afternoon. Wave Detail: W 8 Ft At 10 Seconds And S 2 Ft At 13 Seconds. |
| Fri Night...Nw Wind 15 To 20 Kt. Seas 7 To 10 Ft. Wave Detail: Nw 9 Ft At 10 Seconds And S 2 Ft At 12 Seconds. |
| Sat...Nw Wind 10 To 15 Kt, Easing To 5 To 10 Kt In The Afternoon. Seas 6 To 8 Ft, Subsiding To 5 To 6 Ft In The Afternoon. Wave Detail: Nw 7 Ft At 9 Seconds And S 2 Ft At 12 Seconds. |
| Sat Night...Nw Wind 10 To 15 Kt. Seas 4 To 6 Ft. Wave Detail: Nw 6 Ft At 8 Seconds And S 2 Ft At 12 Seconds. |
| Area Forecast Discussion National Weather Service San Francisco CA 1202am PDT Tuesday September 22 2026 ...New SHORT TERM, Long Term .KEY MESSAGES... Updated at 1201am PDT Tuesday September 22 2026 - Warming trend begins today through Thursday - Cooler conditions Friday into the weekend .SHORT TERM... Issued at 1201am PDT Tuesday September 22 2026 (Today and tonight) Extensive stratus has flowed into the North Bay valleys, Monterey Bay region, Salinas Valley, Hollister area, and the East Bay west of the Berkeley Hills. Across the rest of the SF Bay Area, patches of stratus have developed near Livermore and north of San Jose, with further expansion expected through the pre-dawn hours. The cloud deck retreats back to the immediate coast late this morning into the early afternoon, but by the time it develops again tonight, the marine layer will be compressed, leading to uncertainty over just how far inland the clouds will go. The cut-off low that gave us the last couple days of cooler temperatures is moving across the state with the center crawling through the Mojave Desert into the Great Basin. This allows for more zonal flow to come into the state and a warming trend to begin today, with high temperatures in the upper 70s to the middle 80s across the inland valleys, into the upper 80s in the far interior regions of the North Bay and southern Monterey County, the middle 60s to the middle 70s close to the Bays, and the lower to middle 60s along the immediate coast. A breezy onshore wind will develop in the afternoon and evening hours, with the strongest gusts of 20 to 30 miles per hour along the coast, through favored gaps and passes, and within the northern Salinas Valley. As a quick side note, today will mark the autumnal equinox and the start of astronomical fall. At 505pm Pacific time, the sun's apparent path on the Earth crosses the equator, giving us 12 hours each of sunlight and nighttime. Long Term Issued at 1201am PDT Tuesday September 22 2026 (Wednesday through Monday) Slight ridging will develop over California over the next couple of days, and while the ridge axis quickly moves into the Intermountain West, the ridge influence will allow for further warming Wednesday and Thursday. High temperatures warm into the middle 80s to the middle 90s in the inland valleys, the middle 70s to the middle 80s close to the Bays, and the middle 60s to the lower 70s along the Pacific Coast. Pockets of Moderate HeatRisk are scattered across the interior regions, particularly near San Jose, the interior East Bay, and the Santa Lucia range. These pockets are not expansive enough to merit a Heat Advisory. By Friday, a developing trough in the eastern Pacific comes into the West Coast, and a cooling trend will cause temperatures to dip near and below seasonal averages. Weekend highs range from the middle 70s to the middle 80s in the inland valleys and the middle 60s to the middle 70s close to the Bays. Temperatures will recover early next week as the trough flattens and ensemble model cluster analysis hints at a ridge developing somewhere within the western United States, although the exact impacts are not certain at this point. Marine (Tonight through next Sunday) Issued at 826pm PDT Monday September 21 2026 Moderate to fresh northwest breezes persist overnight with locally stronger winds north of Point Reyes. By Tuesday afternoon, widespread strong northwest winds prevail across the coastal waters, allowing for seas to build from moderate to rough. Northwest winds and seas remain elevated through the week with a brief period of improved conditions Wednesday night into Thursday. By Friday, winds increase with building rough seas. Fire Weather Issued at 423am PDT Monday September 21 2026 An upper-level low will support near to slightly below normal temperatures, increased diurnal winds, a deep (2,500') marine layer. Warming and drying trend kicks off Tuesday with temperatures up to 10 degrees above normal and areas of moderate HeatRisk Wednesday and Thursday. The marine layer will compress below 1,000 feet during this warm-up with nocturnal drying expected above it. NOAA San Francisco Bay Area Office: Watches - Warnings - Advisories CA...None. PZ...Small Craft Advisory until 5am PDT Wednesday for Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM. Small Craft Advisory from 3pm this afternoon to 9pm PDT this evening for Pigeon Pt to Pt Pinos 0-10 nm. Small Craft Advisory from 3pm this afternoon to 3am PDT Wednesday for Pt Pinos to Pt Piedras Blancas 0-10 nm. Small Craft Advisory from 3pm this afternoon to 5am PDT Wednesday for Pigeon Pt to Pt Pinos 10-60 NM. x.com/nwsbayarea |
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