Point Sal to Santa Cruz Island CA including San Miguel and Santa Rosa Islands Marine Forecast
| This Afternoon...Nw Winds 25 To 35 Kt. Combined Seas 11 To 13 Ft Dominant Period 8 Seconds. |
| Tonight...Nw Winds 25 To 30 Kt With Gusts To 40 Kt. Combined Seas 12 To 15 Ft Dominant Period 10 Seconds. |
| Tue...Nw Winds 20 To 30 Kt With Gusts To 40 Kt. Combined Seas 13 To 16 Ft Dominant Period 10 Seconds. |
| Tue Night...Nw Winds 20 To 30 Kt With Gusts To 40 Kt. Combined Seas 12 To 15 Ft Dominant Period 10 Seconds. |
| Wed...Nw Winds 20 To 30 Kt With Gusts To 35 Kt. Combined Seas 11 To 14 Ft Dominant Period 11 Seconds. |
| Wed Night...Nw Winds 15 To 25 Kt With Gusts To 30 Kt. Combined Seas 11 To 13 Ft Dominant Period 11 Seconds. |
| Thu...Nw Winds 15 To 25 Kt. Combined Seas 9 To 12 Ft. |
| Fri...Nw Winds 15 To 25 Kt. Combined Seas 7 To 9 Ft. Patchy Fog. |
| Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 228pm PDT Monday April 29 2024 Synopsis 29/225 PM. Mostly clear skies and warmer temperatures will prevail across the region through this week, although some night through morning coastal low clouds and fog can be expected at times through Wednesday. Gusty northwest to north winds will prevail over the mountains and deserts through Wednesday, then turn NE and gusty over portions of Ventura and Los Angeles Counties Wednesday night into Thursday. There is a slight chance of rain with cooler temperatures later in the upcoming weekend. Short Term - Today through Thursday 29/219 PM. There were some low clouds right along the L.A. County beaches early this afternoon which may persist thu late afternoon. Otherwise sunny skies covered the forecast area with little change expected thru sunset. Northerly pressure gradients helped to keep gusty NW to N winds over portions of the SW SBA County mtns and coast, VTU County mtns, L.A. County mtns along the I-5 Corridor, and the western Antelope Vly foothills into the Antelope Vly. Advisory level wind gusts to 40 to 50 mph at times can be expected in these areas this afternoon and Wind Advisories will continue. Breezy to gusty W-NW winds will also affect much of the coast and adjacent vlys thru this afternoon, strongest on the Central Coast where winds could approach Advisory levels at times. A flat upper level pattern with H5 heigheights around 576 dam will persist over the area, helping to keep temps near normal to a few degrees above normal. Highs this afternoon for the inland coast, vlys and lower mtns should reach the 70s to low 80s, with the warmest temps in the western San Fernando Vly. Flat upper level ridging with H5 heigheights around 576 dam will persist over the area tonight thru Tue, then very weak upper level trough.iness should move in by Wednesday with H5 heigheights falling slightly to around 572-573 dam. The weak upper level trough.iness should linger Wednesday night and Thu as well. Low clouds should affect the L.A. County coast tonight into Tuesday morning, and for the L.A./VTU County coast Tuesday night into Wednesday morning. There should also be more low clouds late tonight into Tuesday morning for the Salinas River Vly. Otherwise and elsewhere across SW CA, mostly clear skies will prevail thru Thu. Strong and gusty NW to N winds are expected to continue tonight thru early Wednesday afternoon for the VTU County mtns, L.A. County mtns around the I-5 corridor and along the Hwy 14 corridor, and the western Antelope Vly foothills into the Antelope Vly. Gusty northerly winds are also expected for the SBA County mtns including Santa Ynez Range, and the SBA County S coast especially below the favored passes and canyons. Gusts to 40 to 55 mph will be possible at times. Wind Advisories are be in effect or will be issued for these areas thru Wednesday afternoon. Please see the latest Non-Precipitation Weather Message (LAXNPWLOX) for further details on the Wind Advisories. For the coast and vlys, breezy to gusty sub-Advisory level W to NW winds can be expected each afternoon, strongest along the Central Coast. As pressure gradients turn sharply offshore to the E Wednesday night, winds are expected to turn more to the NE Wednesday night into Thu, with gusty winds possibly to Advisory levels expected by Thu morning for the favored portions of VTU/L.A. Counties. Temps are forecast to be near normal to a several degrees above normal Tuesday thru Thu, altho Thu should be the warmest day overall thanks to the offshore flow. Highs for the inland coast, vlys and lower mtns should reach generally into the 70s to lower 80s each day. Long Term - Friday through Monday 29/222 PM. The GFS (Global Forecast System) and EC deterministic and mean ensembles are in generally good agreement Fri, but then diverge Sat and Sunday as the GFS continued to dig a significant (for early May) upper level trough into CA late Sat thru Sunday along with a surface cold front, bringing the potential for measurable rain across the region. The EC is weaker with the upper trough and just brushes a dissipating cold front across the region Sunday with a small chance of measurable rain. As far as the GFS mean ensembles, there were 18 members out of 30 showing precipitation across the forecast area this weekend, while yesterday's run had only 4 members with any rain. The NBM, meanwhile, is keeping POPs very low and less than 10 percent. Given that the EC now has some rainfall possibilities, have opted to go against the NBM and introduce mostly slight POPs to the fcst Sat night into Sun. Due to lingering uncertainties it is too early to tell how much rain we may receive from this system, but up to 0.10 inch may fall for many areas. However, the potential exists for as much as one quarter to one half inch of rainfall from Sat night thru Sun. We will know more as additional model runs come in over the next few days. Dry weather is expected Fri into Sat, with a slight chance of rain for northern SLO County late in the day. The front is expected to move across the forecast area Sat night and Sunday with a band of mainly light rainfall, then dry weather should return on Mon. Temps will be near normal to slightly above normal Fri, then should cool to a few degrees below normal by Sunday before rebounding some on Mon. Marine 29/154 PM. For the outer waters, the extended period of gale force winds is expected to continue thru at least Tuesday night. Swell will continue to be steep and choppy, a significant hazard to small vessels in particular. SCA (Small Craft Advisory) conds are expected for the outer waters, Wednesday thru Fri, with a 30% chance of gales persisting into Wednesday night. In the inner waters N of Pt. Sal, SCA (Small Craft Advisory) level winds are likely thru Tuesday night, with a 25% chance of gale force winds this afternoon/evening. Then, there is a 50% chance of SCA (Small Craft Advisory) conds late Wednesday thru Fri. Seas are expected to be at/near SCA (Small Craft Advisory) level through Wed. In the SBA Channel, SCA (Small Craft Advisory) level W-NW winds are expected, particular across western portions, during the afternoon thru late night hours thru Wed. Winds will likely remain below SCA (Small Craft Advisory) levels for eastern portions of the channel, most of the time through the period. In the southern inner waters, there is a 20% chance of SCA (Small Craft Advisory) level W to NW winds across northwestern portions, mainly from Anacapa Island to Malibu during the late afternoon thru late evening hours today thru Tue. Beaches 29/947 AM. Persistent strong winds and outer water swell heigheights of 10-15 feet with a 10 second period will lead to high surf (8-12 feet) along the Central Coast this afternoon through Tuesday night. Surf will be highest across northwest-facing beaches. There is a 40% chance of high surf advisory criteria lingering through Wednesday evening. NO coastal flooding is expected. NOAA Los Angeles/Oxnard CA Office: Watches - Warnings - Advisories CA...High Surf Advisory in effect until 2am PDT Wednesday for zones 340-346. (See LAXCFWLOX). Wind Advisory now in effect until 3pm PDT Wednesday for zones 349-351. Wind Advisory in effect until 3pm PDT Wednesday for zones 352-353-376-377. Wind Advisory in effect until 3pm PDT Wednesday for zones 378-381-383. Wind Advisory in effect until 3pm PDT Wednesday for zone 379. PZ...Small Craft Advisory in effect until 3am PDT Wednesday for zone 645. Small Craft Advisory in effect until 3am PDT Tuesday for zone 650. Gale Warning in effect until 3am PDT Wednesday for zones 670-673-676. https://www.weather.gov/erh/ghwo?wfo=lox |
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