San Mateo Point CA to the Mexican Border and out 30 NM Marine Forecast
| Tonight...Wind Nw 10 Kt. Seas 3 To 4 Ft. Wave Detail: Nw 2 Ft At 4 Seconds, W 3 Ft At 12 Seconds And S 1 Foot At 14 Seconds. |
| Thu...Wind W 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 2 Ft At 4 Seconds, W 3 Ft At 7 Seconds And S 1 Foot At 16 Seconds. |
| Thu Night...Wind W 10 Kt In The Evening...Becoming Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 7 Seconds And S 1 Foot At 17 Seconds. |
| Fri...Wind Variable Less Than 10 Kt...Becoming W 10 Kt In The Afternoon. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 12 Seconds And S 1 Foot At 15 Seconds. |
| Fri Night...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 12 Seconds And S 2 Ft At 16 Seconds. |
| Sat...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 3 Ft At 13 Seconds And S 2 Ft At 15 Seconds. |
| Sat Night...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 12 Seconds And S 2 Ft At 15 Seconds. |
| Sun...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 3 Ft At 12 Seconds And S 2 Ft At 14 Seconds. |
| Sun Night...Wind Variable Less Than 10 Kt. Seas 3 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 12 Seconds And S 2 Ft At 14 Seconds. |
| Mon...Wind Variable Less Than 10 Kt. Seas 3 Ft. Wave Detail: W 1 Foot At 4 Seconds, S 2 Ft At 14 Seconds And W 2 Ft At 15 Seconds. |
| Mon Night...Wind Variable Less Than 10 Kt. Seas 3 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 2 Ft At 14 Seconds And S 2 Ft At 14 Seconds. |
| Area Forecast Discussion National Weather Service San Diego CA 852pm PST Sunday Dec 28 2025 Synopsis Warmer and drier through Tuesday with periods of moderate gusty Santa Ana winds. A low pressure system from the southwest, and another from the Gulf of Alaska, will likely bring a return of precipitation for Wednesday through next weekend, though exact timing and precipitation amounts are still uncertain. For Extreme Southwestern California Including Orange... San Diego...Western Riverside and Southwestern San Bernardino Counties Evening A few thin high clouds were moving over the region this evening. Offshore surface pressure gradients continue to strengthen, currently at -12 mb SAN-TPH and -6 mb SAN-DAG. The strongest winds are occurring near the Cajon Pass where gusts range anywhere from 40-60 mph, with isolated gusts as high as 68 mph. Winds will peak late tonight into Monday, with a second peak for areas prone to easterly winds (San Gorgonio Pass and San Diego County) late Monday into Tuesday morning. No changes to the forecast this evening, though we continue to monitor the incoming storm for New Year's Eve and New Year's Day. Previous discussion... A pattern of high pressure to the north and a closed upper low to the southwest will bring warm and dry conditions with periods of gusty Santa Ana winds through Tuesday. The offshore flow gets some upper level support on Monday and Tuesday with northeast winds aloft. The offshore flow will likely be strongest on Tuesday, producing gusty Santa Ana winds in the mtns and lower elevations west of the mtns. Northeast to east winds gusting 35-45 mph - with local gusts of 55-60 mph - will be possible in the favored locations. Tuesday will also be the warmest day, with high temps in the 70s west of the mtns and most areas seeing temps near or above seasonal averages. Coastal and valley areas could be as much as 9 degrees above average while the mtns and deserts will be near or just a few degrees above. Relative humidities could fall into the teens for some inland areas Monday and Tuesday afternoons but the recent rains will mitigate fire weather concerns. Chances for rain and mountain snow will return for Wednesday through next weekend as a low pressure system moves in from the Gulf of Alaska, causing the closed low to our southwest to become an open wave as it is drawn into the mean westerly flow over the Southwest US. Forecast details are still uncertain but numerical model solutions are coming into better agreement with respect to the synoptic pattern. Current solutions indicate that SoCal will receive precipitation in two phases. The closed low ejecting to the northeast from its position about 1100 miles to our southwest will likely bring periods of rain/showers in a warm environment late Wednesday through Thu. A dynamic ridge between the exiting low/trough and the low approaching from the Gulf of AK could provide a break from the precipitation on Friday. The low from the Gulf of AK will resume the rain/showers in a colder environment for Sat through Sun. Precipitation could move in as early as late Wednesday morning with periods of rain and showers continuing (with breaks) through next Sunday. Precip amounts will be greatest in the northern areas (Orange and San Bernardino Counties) and less in southern San Diego County. Current rainfall estimates are for totals of 1"-1.9" in the coastal areas, 1.2"-2" in the inland valleys, 0.10"-0.7" in the low deserts, 0.40"-0.9" in the high desert, 1.3"-3.5" in the San Diego and Riverside County mtns and 1.8"-4.5" in the San Bernardino Mountains. The snow level will remain above 8,000 ft through Friday before lowering to around 6,500 ft on Saturday. Most of the precipitation will likely fall before next weekend so snowfall amounts at resort levels and below will be limited. Marine No hazardous marine weather conditions expected through Saturday. Skywarn Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions. NOAA San Diego CA Office: Watches - Warnings - Advisories CA...Wind Advisory until 1pm PST Tuesday for San Bernardino County Mountains-San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Mountains-San Diego County Valleys-San Gorgonio Pass near Banning-Santa Ana Mountains and Foothills. PZ...None. |
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