Point Arena to Point Reyes CA out 10 NM Marine Forecast
| Tonight...Nw Wind 5 To 10 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 4 Ft At 8 Seconds And S 2 Ft At 10 Seconds. A Slight Chance Of Showers This Evening. |
| Thu...Nw Wind 5 To 10 Kt, Rising To 15 To 25 Kt In The Afternoon. Seas 3 To 5 Ft, Building To 5 To 6 Ft In The Afternoon. Wave Detail: Nw 5 Ft At 7 Seconds And Sw 2 Ft At 12 Seconds. |
| Thu Night...Nw Wind 15 To 25 Kt. Seas 6 To 8 Ft. Wave Detail: Nw 7 Ft At 8 Seconds And S 3 Ft At 10 Seconds. |
| Fri...Nw Wind 10 To 15 Kt, Rising To 15 To 20 Kt In The Afternoon. Seas 5 To 7 Ft. Wave Detail: Nw 7 Ft At 8 Seconds And Sw 2 Ft At 14 Seconds. |
| Fri Night...Nw Wind 20 To 25 Kt, Easing To 15 To 20 Kt After Midnight. Seas 6 To 8 Ft. Wave Detail: Nw 7 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 4 To 6 Ft. Wave Detail: Nw 6 Ft At 7 Seconds And Sw 2 Ft At 14 Seconds. |
| Sat Night...Nw Wind 20 To 25 Kt With Gusts Up To 35 Kt, Easing To 15 To 20 Kt After Midnight. Seas 4 To 6 Ft. Wave Detail: Nw 5 Ft At 7 Seconds. |
| Sun...Nw Wind 10 To 15 Kt, Rising To 15 To 20 Kt In The Afternoon. Seas 4 To 6 Ft. Wave Detail: W 5 Ft At 8 Seconds And Sw 2 Ft At 14 Seconds. |
| Sun Night...Nw Wind 20 To 25 Kt, Easing To 15 To 20 Kt After Midnight. Seas 5 To 7 Ft. Wave Detail: Nw 7 Ft At 8 Seconds And S 2 Ft At 14 Seconds. |
| Mon...Nw Wind 10 To 15 Kt. Seas 5 To 7 Ft. Wave Detail: Nw 6 Ft At 9 Seconds. |
| Mon Night...Nw Wind 15 To 20 Kt. Seas 6 To 8 Ft. Wave Detail: Nw 7 Ft At 8 Seconds. |
| Area Forecast Discussion National Weather Service San Francisco CA 1204am PDT Thu September 10 2026 ...New SHORT TERM, Long Term .KEY MESSAGES... Updated at 1201am PDT Thu September 10 2026 - Widespread moderate HeatRisk continues today - Cooler temperatures, closer to seasonal averages, Friday into the weekend .SHORT TERM... Issued at 1201am PDT Thu September 10 2026 (Today and tonight) Temperatures were very hot yesterday, with four daily records broken and temperatures in the lower to middle 80s persisting well into the evening for much of the Bay Area and Central Coast. Scattered high clouds stemming from the remnants of Tropical Storm Marie continue to impact the the SF Bay Area, inhibiting the radiational cooling impacts. The morning lows have been bumped up as a result, and range from the middle 60s to lower 70s for the immediate Pacific Coast and areas close to the Bays, into the middle to upper 70s for the inland valleys, and the lower 80s for the highest ridgelines. Confidence in the forecast is moderate and the temperatures could drop lower if radiational cooling is more robust than currently expected. The strong high pressure system from the Desert Southwest that drove yesterday's scorching temperatures will stick around for today, but through the day a pulse of energy from northwestern Canada will descend and reinforce a trough over British Columbia and the Pacific Northwest. This will begin the process of flattening the ridge and while the high temperatures will still be dangerously warm, they will likely be cooler than yesterday's with the inland valleys reaching highs in the 90s, into the triple digits for the warmest interior locations, and the middle 70s to the upper 80s for the Bayshore regions. There is some uncertainty over how the temperatures will develop at the Pacific coast, where the flattening ridge should allow for some stronger onshore flow to develop, but the current forecast shows these areas around the upper 60s to middle 70s, possibly higher if the onshore breeze does not develop. By the evening hours, a marine layer should begin to redevelop, allowing low clouds to return to the immediate coast. Widespread moderate HeatRisk continues today, corresponding to a moderate risk of heat-related illnesses for sensitive populations, while favored locations including interior Contra Costa County and the Santa Lucia range remain in major HeatRisk, corresponding to a major risk for heat related illnesses for most people. Please remember these tips to help mitigate impacts from heat exposure: -Suspend unnecessary outdoor activities during the extreme heat, but if you must be outdoors, take frequent breaks in the shade or AC and drink cool water. -Know the signs and symptoms of Heat Exhaustion vs. Heat Stroke! Heat Stroke can be deadly if not treated immediately by a medical professional. Call 911 if you suspect someone is suffering from Heat Stroke. -Wear a life jacket, swim near a lifeguard, and check conditions before entering the water if going to a river or ocean to cool off. Rivers and the ocean are extremely cold, and Cold Water Shock can turn into paralysis and drowning if you are not careful. -Use a cool and damp towel on your body if you do not have AC and are feeling hot. Or, take a cool shower or bath. -Do not leave kids or pets in a parked car. -Ensure pets and livestock have access to shade and water. Long Term Issued at 1201am PDT Thu September 10 2026 (Friday through Wednesday) The cooling trend continues Friday into the weekend as the pulse of energy breaks off into its own cutoff low off the coast of British Columbia and strengthens as it parallels the Pacific Northwest coast, allowing for further development of the onshore flow and marine layer to take place. By the weekend, highs will drop into the middle 70s to middle 80s inland and the upper 60s to upper 70s close to the Bays. The SFO-WMC pressure gradient rises to around 12 to 15 mb on Saturday, suggesting the possibility for strong onshore winds. The trough axis should move into the northern Rockies and the northern Plains for the early part of next week, but the general pattern should remain rather zonal for the remainder of the 7-day outlook, and temperatures should remain more or less stable. Marine (Tonight through next Tuesday) Issued at 941pm PDT Wednesday September 9 2026 A few lingering showers remain over the northern waters thanks to passing tropical moisture. Then, gentle to moderate northwesterly breezes with a smaller sea state will continue through Thursday. By Friday, northerly winds increase thank to a stronger north to south pressure gradient. A strong northwest breeze is expected Saturday and Sunday. A moderate SW swell from distant tropical cyclones will continue through the week. NOAA San Francisco Bay Area Office: Watches - Warnings - Advisories CA...Coastal Flood Advisory until 1am PDT early this morning for CAZ006-506-508-529-530. Heat Advisory until 10pm PDT this evening for CAZ006-502>506- 508>510-512>518-528>530. PZ...Small Craft Advisory from 3pm this afternoon to 10am PDT Friday for Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm. x.com/nwsbayarea |
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