Sunrise 6:08 AM   Sunset 8:10 PM Moonrise 3:17 AM   Moonset 3:25 PM

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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 236 Am Pdt Sat May 4 2024
.small craft advisory in effect from this afternoon through this evening - .
Today - NW winds 10 to 20 knots with gusts up to 30 knots. Wind waves 1 to 2 ft - .building to 3 to 4 ft this afternoon. W swell 4 to 5 ft at 8 seconds and sw up to 2 ft at 15 seconds. Rain this morning, then a chance of rain and a slight chance of Thunderstorms this afternoon. Tonight - NW winds 10 to 20 knots with gusts up to 30 knots. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 9 seconds and sw around 2 ft at 15 seconds. Sun - NW winds 10 to 15 knots with gusts up to 25 knots. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 9 seconds and sw around 2 ft at 15 seconds. Sun night - NW winds 10 to 15 knots. Wind waves 3 to 4 ft. NW swell 6 to 8 ft at 10 seconds and sw up to 2 ft at 15 seconds. Mon - W winds 10 to 15 knots. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 12 seconds and sw up to 2 ft at 18 seconds. Mon night - NW winds 10 to 20 knots with gusts up to 30 knots. Wind waves 3 to 4 ft. NW swell 5 to 7 ft at 10 seconds and sw around 2 ft at 19 seconds. Tue - NW winds 20 to 30 knots with gusts up to 40 knots. Wind waves 4 to 5 ft. NW swell 6 to 8 ft and sw around 2 ft. Wed - NW winds 15 to 25 knots with gusts up to 30 knots. Wind waves 3 to 4 ft. NW swell 5 to 7 ft and sw around 2 ft.
winds and seas higher in and near tstms.

PZZ500 236 Am Pdt Sat May 4 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
a low pressure system and its associated cold front will bring widespread rain and fresh southwesterly breezes to the waters with gale force gusts possible over the southernmost zones. Fresh northwesterly breezes will prevail behind the cold front with scattered rain showers possible through Saturday. Come Sunday, as the low pressure system exits to the east, dry conditions return and the pressure gradient will be allowed to relax, finally allowing winds to diminish below small craft advisory criteria.

FXUS66 KSTO 040930 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 230 AM PDT Sat May 4 2024

SYNOPSIS
A weather system moves through the area today bringing showers, mountain snow, isolated thunderstorms, gusty winds and cooler temperatures. Warmer and drier conditions return next week with gusty north to east winds mid-week.

Current radar shows the weather system starting to move into far northwestern California this morning. Precipitation will spread inland through the day today, in the form of Valley and foothill showers, and mountain snow. Latest guidance from WPC shows storm total QPF of around 0.50"-1.25" in the Valley, with 1"-3" in the foothills and mountains. Isolated thunderstorms are also in the forecast for today (15-30% probability). Brief heavy rain, small hail, lightning, gusty winds and brief funnel clouds will be possible with any thunderstorms that develop. Best chances are north of Interstate 80.

For the mountains, snow is expected today, heavy at times. Storm total snow amounts have increased slightly. The National Blend of Models (NBM) advertises a 75-95% probability of 8 inches of snow or more, and 50-90% probability of 12 inches or more. Snow levels have also trended slightly lower, and the Winter Storm Warning area has been expanded to include elevations above 4000 feet. Snow levels will initially be around 4000-5000 feet this afternoon and lower to around 2500-3500 feet by early Sunday morning. Snow rates of 1-2 inches per hour, combined with gusty winds will lead to travel delays, reduced visibilities, snow covered roads and chain controls. People should check the forecast and road conditions before traveling in the mountains this weekend.

Gusty south to southwest winds are also developing ahead of the storm. A Wind Advisory has been issued for portions of the Northern and Central Sacramento Valley, mainly east of Interstate 5, and the Northeast Foothills through 11 AM this morning. The NBM shows a 65-95% probability of 40 mph gusts or greater in this area, and a 55-95% probability of 50 mph gusts in the mountains where the Winter Storm Warning is in place. Much cooler temperatures will also influence the area, with highs around 15 to 20 degrees below the climatological normal for this time of year today, which is also highlighted with a strong signature on the Extreme Forecast Index (EFI). Precipitation tapers off on Sunday, as just a few showers and mountain snow showers linger in the mountains. Temperatures will gradually warm next week, with periods of breezy winds.

.EXTENDED DISCUSSION (Wednesday THROUGH Saturday)...
Ensemble guidance and cluster analysis indicate a dry, warm and windy pattern setting up for mid to late next week. There is still some uncertainty with the exact details such as timing and magnitude of the winds. The Extreme Forecast Index (EFI) is highlighting strong north to east winds in the typical wind prone areas for this direction which would include the western portion of the Valley and in the mountains. The National Blend of Models (NBM) shows a 55 to 85 percent probability of wind gusts greater than 40 mph in those areas on Wednesday. Temperatures gradually warm over the extended forecast period, returning to the 80s in the Valley.

AVIATION
Pacific weather system moves through today with widespread MVFR conditions spreading south in the Central Valley through the morning, then generally VFR after 21Z except MVFR vicinity scattered showers and isolated thunderstorms. In the Sierra, widespread IFR/LIFR conditions develop after 15Z with rain, snow and thunderstorms. Snow levels lowering to 5000-6000 feet this afternoon, and to around 3500 feet tonight. Widespread southerly surface wind gusts 25-35 kts with 35-45 kts over higher terrain.
Wind decreasing in the Central Valley after 00Z Sunday.

STO WATCHES/WARNINGS/ADVISORIES
Wind Advisory until 11 AM PDT this morning for Central Sacramento Valley-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley.

Winter Storm Warning from 11 AM this morning to 8 AM PDT Sunday for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

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Arena Cove
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Sat -- 02:52 AM PDT     1.27 feet Low Tide
Sat -- 04:19 AM PDT     Moonrise
Sat -- 06:12 AM PDT     Sunrise
Sat -- 08:33 AM PDT     4.76 feet High Tide
Sat -- 02:47 PM PDT     0.34 feet Low Tide
Sat -- 04:27 PM PDT     Moonset
Sat -- 08:11 PM PDT     Sunset
Sat -- 09:14 PM PDT     5.77 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Arena Cove, California (2), Tide feet

Salt Point
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Sat -- 12:25 AM PDT     -1.05 knots Max Ebb
Sat -- 04:02 AM PDT     0.00 knots Slack
Sat -- 04:17 AM PDT     Moonrise
Sat -- 06:11 AM PDT     Sunrise
Sat -- 06:53 AM PDT     0.93 knots Max Flood
Sat -- 09:47 AM PDT     -0.00 knots Slack
Sat -- 12:39 PM PDT     -1.13 knots Max Ebb
Sat -- 04:12 PM PDT     0.00 knots Slack
Sat -- 04:25 PM PDT     Moonset
Sat -- 07:12 PM PDT     1.12 knots Max Flood
Sat -- 08:08 PM PDT     Sunset
Sat -- 10:14 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Salt Point, California Current, knots

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