Sunrise 6:19 AM   Sunset 7:53 PM Moonrise 6:59 PM   Moonset 5:06 AM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 837 Pm Pdt Tue Apr 23 2024
Tonight - SW winds 10 to 15 knots. Wed - SW winds 10 to 15 knots. Wed night - W winds 10 to 15 knots. Thu - W winds 10 to 20 knots. Thu night - W winds 10 to 20 knots with gusts up to 25 knots. Fri - W winds 10 to 20 knots with gusts up to 25 knots. Sat - W winds 10 to 15 knots.

PZZ500 837 Pm Pdt Tue Apr 23 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
a weak low pressure system off the coast will continue to bring light to moderate southerly winds over the coastal waters. As this system begin to weaken tonight, northwest flow will return over the waters ushering in calmer conditions. Moderate swells will persist through the week.

FXUS66 KSTO 232112 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 212 PM PDT Tue Apr 23 2024


Synopsis
Cooler thru mid-week along with a chance for afternoon showers and thunderstorms over the mountains. Precipitation chances increase Thursday into Friday as a weather system moves through, best chances in the foothills and mountains.

Discussion
Scattered showers continue to trek along both the Sierra and Coastal Range this afternoon as shown on RADAR. GOES-West shows mostly cloudy skies across interior NorCal this afternoon which have helped keep daytime highs cooler than yesterday. As of 2:00 pm, Valley highs are in the 60s & 70s with foothills/mountain highs in the 50s & 60s.

Onshore flow continues through the Delta and Valley today bringing in cooler marine air, low-level moisture, and gusty winds (20-25 mph). The National Blend of Models indicates a strengthening in the low-level flow resulting in gusty winds through the Delta and Valley continuing Thursday and Friday with gusts 15 to 25 mph.

Mid-level moisture and instability has begun to get drawn northward ahead of the offshore trough as it moves onshore. The National Blend of Models has a 15 to 35% chance of thunderstorms over the northern Sacramento Valley and adjacent mountains this afternoon/evening. Heading into Wednesday and Thursday, probabilities drop slightly to around 20% over similar area and over the mountains south of HWY 50, as the initial trough and closed low pass mainly to the south of us into SoCal.

Behind that system, a couple shortwaves and associated vorticity lobes are forecast to drop into NorCal later in the week reinforcing the cool and unsettled pattern and bringing a better chance for showers on Friday with a broad swath of 15 to 20% chance over the Valley/foothills/Sierra. The National Blend of Models indicates a 10%-25% chance of 0.10" or more of precipitation in the Valley with a 20%-30% of 0.50" or more in the mountains and foothills. Snow levels will be around 7000' meaning most of the precipitation will fall as rain. Impacts are expected to be on the lower end with only minimal travel impacts.

.EXTENDED DISCUSSION (Saturday THROUGH Tuesday)...
By Saturday morning, conditions will have dried as the trough moves further east away from the forecast area. NBM probabilities try to keep some lingering sprinkles over the mountains Saturday morning but any accumulating precipitation is not likely.
Afterwards, weak ridging briefly develops, warming the area this weekend. Valley highs will be in the mid to upper 70s with 60s and 50s across the foothills and mountains respectively by early next week. By early next week, clusters have Northern CA under zonal flow, keeping the forecast quiet with troughing in the Pacific NW aiding in keeping temperatures near normal across the Valley.

AVIATION
VFR conditions over next 24 hrs outside of localized MVFR/IFR conditions from isolated showers/t-storms over the foothills, mountains, and portions of the Northern Sacramento Valley through 03Z Wednesday. Localized MVFR conditions may linger in the Northern Sacramento Valley near RDD through 09Z Wednesday from isolated showers. Areas of southwesterly gusts 15-25 kts over the Delta through 12Z Wednesday and Valley gusts 10-15 kts through 06Z Wednesday before weakening.



STO WATCHES/WARNINGS/ADVISORIES
None.

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Port Chicago
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Tue -- 02:04 AM PDT     4.84 feet High Tide
Tue -- 06:06 AM PDT     Moonset
Tue -- 06:20 AM PDT     Sunrise
Tue -- 09:16 AM PDT     -0.02 feet Low Tide
Tue -- 03:17 PM PDT     3.62 feet High Tide
Tue -- 04:51 PM PDT     Full Moon
Tue -- 07:52 PM PDT     Sunset
Tue -- 07:59 PM PDT     Moonrise
Tue -- 08:27 PM PDT     1.37 feet Low Tide
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Stake Point .9 Mi NNW
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Tue -- 01:05 AM PDT     0.87 knots Max Flood
Tue -- 04:08 AM PDT     -0.00 knots Slack
Tue -- 06:05 AM PDT     Moonset
Tue -- 06:20 AM PDT     Sunrise
Tue -- 07:39 AM PDT     -0.77 knots Max Ebb
Tue -- 11:03 AM PDT     0.00 knots Slack
Tue -- 02:31 PM PDT     0.66 knots Max Flood
Tue -- 04:51 PM PDT     Full Moon
Tue -- 05:16 PM PDT     -0.00 knots Slack
Tue -- 07:33 PM PDT     -0.41 knots Max Ebb
Tue -- 07:51 PM PDT     Sunset
Tue -- 07:58 PM PDT     Moonrise
Tue -- 09:57 PM PDT     0.00 knots Slack
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Stake Point .9 Mi NNW, Suisun Bay, California Current, knots

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