Point Pinos to Point Piedras Blancas out 10 NM Marine Forecast
| Tonight...Nw Wind 5 To 10 Kt, Easing To Around 5 Kt Late. Seas 4 To 6 Ft. Wave Detail: Nw 4 Ft At 8 Seconds And S 4 Ft At 13 Seconds. |
| Tue...Nw Wind Around 5 Kt, Rising To 5 To 10 Kt In The Afternoon. Seas 4 To 5 Ft. Wave Detail: Nw 3 Ft At 8 Seconds And S 4 Ft At 11 Seconds. |
| Tue Night...Nw Wind 5 To 10 Kt. Seas 4 To 5 Ft. Wave Detail: Nw 3 Ft At 8 Seconds And S 3 Ft At 11 Seconds. |
| Wed...Nw Wind 5 To 10 Kt. Seas 4 To 5 Ft. Wave Detail: Nw 3 Ft At 7 Seconds And S 3 Ft At 10 Seconds. |
| Wed Night...Nw Wind 5 To 10 Kt. Seas 4 To 5 Ft. Wave Detail: Nw 4 Ft At 6 Seconds And S 3 Ft At 10 Seconds. |
| Thu...Nw Wind 5 To 10 Kt, Rising To 10 To 15 Kt In The Afternoon. Seas 4 To 5 Ft. Wave Detail: Nw 4 Ft At 7 Seconds And Sw 3 Ft At 12 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 4 Ft At 7 Seconds And Sw 3 Ft At 10 Seconds. |
| Fri...Nw Wind 10 To 15 Kt, Rising To 15 To 20 Kt In The Afternoon. Seas 4 To 5 Ft. Wave Detail: Nw 4 Ft At 7 Seconds And Sw 3 Ft At 15 Seconds. |
| Fri Night...Nw Wind 15 To 20 Kt. Seas 5 To 6 Ft. Wave Detail: Nw 5 Ft At 7 Seconds And Sw 2 Ft At 15 Seconds. |
| Sat...Nw Wind 15 To 20 Kt, Rising To 20 To 25 Kt In The Afternoon. Seas 5 To 6 Ft. Wave Detail: Nw 5 Ft At 8 Seconds And Sw 2 Ft At 14 Seconds. |
| Sat Night...Nw Wind 20 To 25 Kt. Seas 5 To 8 Ft. Wave Detail: Nw 7 Ft At 8 Seconds And S 2 Ft At 14 Seconds. |
| Area Forecast Discussion National Weather Service San Francisco CA 1151pm PDT Monday September 7 2026 ...New SHORT TERM, LONG TERM, KEY MESSAGES... .KEY MESSAGES... Updated at 1130pm PDT Monday September 7 2026 - Warming and drying trend will bring widespread moderate to major HeatRisk through Thursday .SHORT TERM... Issued at 1151pm PDT Monday September 7 2026 (Tonight through Wednesday) 24 hour trends are warmer and drier. Already a warming trend is underway with increasing thermal and height ridging aloft. Any marine layer influence is confined to within a few hundred feet of sea level with only a few patches of fog along the Big Sur coast at the moment. The large scale pattern shift to warmer/hotter temperatures involves both the retrogression (westward motion) of the subtropical ridge over the central U.S. and the eventual merging of tropical energy and moisture from steadily decaying TS Marie and a cut-off low far to our west (also forecast to retrogress). Strengthening 500 mb heights, large scale compression and the September sun angle will raise temperatures up further Tuesday, peaking well above normal both Wednesday and Thursday. A little bit of a wildcard to this week's pattern is the northward intrusion of tropical moisture including some warm air advection (far from decaying TS Marie) which will be west of the 500 mb ridge axis. Higher to much higher precipitable water will arrive here, model forecasts are still showing near 1.40" in the Bay Area mid-week, near the max moving average for Oakland upper air early-mid September climatology. Mid and high clouds will increase, but we don't really know quite yet with high confidence how well the models may or may not be handling mid-level convective potential (mucape) with disagreement among various output from e.g. from the HRRR (High-Resolution Rapid Refresh) and GFS. Good to see the GFS (Global Forecast System) shows very minimal to no mucape anyhow. Also, with hotter surface temperatures (greater internal energy) air parcels will stay capped as long as the atmosphere is stable. Hot temperatures for this week are not quite in reach of long term record highs at this point, except Half Moon Bay may get close if there's no shallow sea breeze mid-week as an offset to the temperature. Will continue to monitor. A Heat Advisory is in effect for the entire forecast area from 10 AM Wednesday to 10pm Thursday. We've had a nice 10 to 11 day run of below normal temperatures (due to a large scale trough), especially inland, so the sudden reversal in temperatures will be noticeable if not already. With widespread moderate to major HeatRisk, this affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Please stay out of direct sunlight, and stay properly hydrated. Hot conditions can cause heat illnesses. Also, minor coastal flooding is likely within a small window of time of about 1 hour nearest high tide Tuesday (possibly Wednesday as well) for bayshore locations of Marin County. Impacts will include minor flooding of the lowest lying areas directly along the shoreline. At the San Francisco tidal gauge, high tide is expected to be 1 ft above normal at 9:59pm 9/8. At this time we are messaging it here and will include messaging in social media vs issuing a coastal flood advisory for Monday. The Beach Hazards Statement was allowed to expire. Long Term Issued at 1151pm PDT Monday September 7 2026 (Wednesday night through next Monday) Well above normal hot weather continues Thursday. Thereafter northwest winds and a gradual weakening of the 500 mb ridge will bring a cooling trend for late in the week and weekend. Daytime highs will cool back to near normal Friday, then possibly a few degrees below normal for the upcoming weekend. Late week weather will be dry with the mid-latitude pattern settling back in. Marine (Tonight through next Sunday) Issued at 924pm PDT Monday September 7 2026 Northwest winds gradually diminish to gentle to moderate tonight which then prevails through the remainder of the week. Northwest winds look to increase late this week into the weekend. NOAA San Francisco Bay Area Office: Watches - Warnings - Advisories CA...Beach Hazards Statement until 11pm PDT this evening for CAZ006- 505-509-529-530. Heat Advisory from 10am Wednesday to 10pm PDT Thursday for CAZ006-502>506-508>510-512>518-528>530. PZ...None. x.com/nwsbayarea |
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