Point Arena to Pigeon Point between 150 and 250 NM Offshore Forecast
| Today...N Winds 10 To 20 Kt. Seas 5 To 8 Ft. |
| Tonight...N Winds 10 To 20 Kt. Seas 6 To 8 Ft. |
| Mon...N Winds 10 To 20 Kt, Becoming 10 To 15 Kt. Seas 7 To 8 Ft. |
| Mon Night...N Winds 10 To 15 Kt. Seas 7 To 8 Ft. |
| Tue...N To Ne Winds 10 To 20 Kt. Seas 6 To 8 Ft. |
| Tue Night...N To Ne Winds 5 To 15 Kt. Seas 6 To 7 Ft. |
| Wed...N To Nw Winds Less Than 10 Kt. Seas 6 To 7 Ft. |
| Wed Night...N To Nw Winds 5 To 10 Kt. Seas 5 To 7 Ft. |
| Thu...N Winds 5 To 10 Kt, Increasing To 10 To 15 Kt. Seas 5 To 6 Ft. |
| Thu Night...N Winds 10 To 15 Kt. Seas 5 To 7 Ft. |
| Area Forecast Discussion ...UPDATED National Weather Service San Francisco CA 1141am PDT Sunday July 19 2026 .SHORT TERM... Issued at 109am PDT Sunday July 19 2026 (Today and tonight) Onshore winds are ushering stratus inland. Onshore winds continue due to a 2.9 mb SFO-SAC pressure gradient. A few patches of mist/fog may additionally develop through daybreak. High clouds are extending far north-northeast of tropical storm Elida located 1000 miles south- southwest of Point Conception. Elida is forecast to essentially move northward, get drawn into the westerlies and weaken to a post tropical remnant low by 5 am PDT Tuesday, July 21st per latest from the NHC. Strong (warm core) high pressure remains located over the interior west, land locked as typically this time of year due to high sun angle surface heating. The high is surrounded by a mix of cold core (mid-latitude) and warm core (tropical) low pressure systems of varying strength. Upward vertical motion/expansion (lows) has to return downward/compression (highs) somewhere via continuity. Upper level troughing generally remains located over the eastern Pacific. Daytime highs today will be about the same it was on Saturday, varying from the mid to upper 60s along the coast to the 70s bayside to the 80s and 90s well inland. Tonight lows will cool to the 50s except in the 60s in the hills and mountains. Long Term Issued at 109am PDT Sunday July 19 2026 (Monday through Saturday) As mentioned, current tropical storm Elida is forecast to move generally northward, get drawn into the westerlies and weaken to a post tropical/remnant low by early Tuesday. Tropical cyclones depend on a minimum of 80F or warmer sea surface temperatures. With less heat flowing into northward moving tropical cyclones the thermodynamic system diminishes. Not to mention northward moving tropical cyclones eventually encounter the westerlies, wind shear, drier air (destructive to convection), but may temporarily form in to a hybrid system or become an extra-tropical cold core system tapping energy transformation from warm/cold air temperature advection. As of current time, the GFS (Global Forecast System) and ECMWF (European Centre for Medium-Range Weather Forecasts) for example forecast the remnant low to pass ~ 500 miles to our west early-mid week, rain is forecast to fall from the low, but of course it'll be too far to our west to benefit from it. Good news so far, based on the forecast low trajectory and most model forecasts, there is minimal convective potential over our forecast area early-mid week. Of course as always stay tuned to the latest updates. Marine (Today through Friday) Issued at 1141am PDT Sunday July 19 2026 Gentle to moderate northwesterly breezes will persist through the upcoming workweek with slight to moderate seas. As tropical cyclone activity continues across the eastern Pacific, long period southerly swell is forecast. While heigheights for the southerly swell are largely anticipated to remain in the slight category, mixed seas may result in hazardous boating conditions through the week. In addition, there are non-zero chances for high based showers which could result in pockets of gusty outflow winds and subsequent steep seas through mid-week. Fire Weather Issued at 120pm PDT Sat July 18 2026 Cooler than normal temperatures with assistance from onshore flow and relatively normal diurnal intrusion of the marine layer will continue through the weekend into next week. RH recovery will be excellent for coastal areas and valleys, and moderate to good farther inland. However weak offshore flow/thermal belting will result in poor RH for higher elevations, especially above 1500- 2000ft across the East Bay Hills and Santa Lucias. NOAA San Francisco Bay Area Office: Watches - Warnings - Advisories CA...None. PZ...None. x.com/nwsbayarea |
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