Sunrise 5:47 AM   Sunset 8:27 PM Moonrise 1:42 AM   Moonset 2:20 PM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 900 Pm Pdt Sat Jun 1 2024
.small craft advisory in effect until 9 pm pdt this evening - ..small craft advisory in effect from Sunday afternoon through Sunday evening - .
Tonight - W wind 15 to 20 kt, becoming sw 10 to 15 kt after midnight. Waves around 2 ft or less. Sun - SW wind 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Waves around 2 ft or less. Sun night - W wind 10 to 15 kt. Waves around 2 ft or less. Mon - W wind 10 to 15 kt. Waves around 2 ft or less. Mon night - W wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less. Tue - W wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less. Tue night - W wind 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Waves around 2 ft or less. Wed - SW wind 5 to 10 kt. Waves around 2 ft or less. Wed night - SW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less. Thu - SW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less. Thu night - SW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less.

PZZ500 900 Pm Pdt Sat Jun 1 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
buoys are no longer reporting gale force winds over portions of the northern waters this evening, however strong winds will continue through Sunday. Significant wave heights of up to 11 to 12 feet in the outer waters north of pigeon point continue overnight with 6 to 10 feet elsewhere over the open water. Seas begin to diminish towards the end of the weekend and into next week.

FXUS66 KMTR 020128 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 628 PM PDT Sat Jun 1 2024

New UPDATE, MARINE

SYNOPSIS
Issued at 109 PM PDT Sat Jun 1 2024

Cooler temperatures continue into Monday with coastal stratus developing overnight. Significant warming begins Tuesday with moderate HeatRisk across the interior regions through Thursday.

UPDATE
Issued at 609 PM PDT Sat Jun 1 2024

The story of the day was strong onshore wind. Several locations around the Bay Area had gusts into the 40+ mph range, including San Francisco and SFO. This was caused by the gradient between strong high pressure over the Eastern Pacific, and low pressure over the intermountain west. Zooming in, the gradient between SFO and SAC reached as high as 4.4 mb this afternoon. The synoptic gradient was also enhanced by much higher temperatures over the Sacramento Valley than coastal areas stuck in the marine layer.
San Francisco only reached 62 degrees today, while Sacramento reached 88. This warmer, less dense air contributed to the lower pressure over the Central Valley and helped drive the onshore winds. After decreasing late tonight and Sunday morning, winds will pick back up in the afternoon as the pattern remains relatively unchanged.

SHORT TERM
(This evening through Sunday)
Issued at 109 PM PDT Sat Jun 1 2024

Coastal stratus continues to gradually erode in the western San Mateo Peninsula and the Monterey Bay region, expected to clear through the rest of the afternoon. Widespread marine layer stratus is expected again across the lower elevations in the SF Bay Area and Central Coast tonight into Sunday morning, facilitated by a deep marine layer (2000 ft or greater as measured by the Fort Ord profiler). This is also helping to generally moderate temperatures from yesterday's warm readings. The most dramatic cooldowns have been in the interior valleys of the East Bay, South Bay, and southern Monterey County, where temperatures are as much as 20 degrees cooler than yesterday at the same time. The North Bay has cooled down slightly, but downsloping winds from the coastal ranges are themselves moderating the cooling effect of the marine layer, which is also slightly compressed compared to the situation further south (1200 feet as measured from the Bodega Bay profiler).

All this corresponds to high temperatures extending from the upper 70s to the lower 80s for the interior valleys, with the mid to upper 80s expected in the North Bay and southern Monterey County valleys, mid 60s to lower 70s along the Bayshore and near Santa Cruz, and the upper 50s to lower 60s along the Pacific coast. Lows tonight are generally in the low to mid 50s, except down into the low 40s across the higher elevations.

LONG TERM
(Sunday night through next Friday)
Issued at 109 PM PDT Sat Jun 1 2024

Relatively cool conditions continue into Monday. Impacts from a deep upper-level trough impacting British Columbia will be limited, and limited mainly to the North Bay, where the fringes of a cold front will moderate high temperatures to the mid 70s to lower 80s in the valleys. Any rain will be limited to the extreme northern reaches of Sonoma County with insignificant accumulations.

The pattern changes on Tuesday with a strengthening ridge over the Pacific migrating into the Western United States. In the interior regions, temperatures are expected to rise into the 90s to the low 100s into Thursday with a moderate HeatRisk, meaning that there's a risk of heat-related illnesses for sensitive populations (children, the elderly, pregnant women, and people without access to shade or air conditioning). The coastal regions remain quite uncertain. The main questions concerning the coastal forecast will any remaining sea breezes be strong enough to outweigh the general warming trend, how far will they travel inland, and how deep will be the remaining marine layer be. To give just one example of the potential uncertainty, the current forecast calls for highs in downtown San Francisco to top out at 78, but some of the model guidance extends into the mid 80s.

There is still a chance that the upper level trough stalls over the West Coast, but the model ensemble clusters suggest that the most likely outcome is that the ridge will start to build more towards the north and bring heat impacts into the northwestern United States. In addition, some of the global models show a southerly wind reversal setting up sometime later on Wednesday into Thursday. With the end of the heat still at least several days out, it's a good idea to stay tuned for further updates as forecast confidence increases.

AVIATION
(00Z TAFS)
Issued at 512 PM PDT Sat Jun 1 2024

VFR conditions at most terminals through this evening with the exception of Monterey Bay. That last bit of cigs are finally thinning and will allow for a few hours with no cigs before they return early tonight. The bigger story heading into the evening will be the increasing winds aloft leading to LLWS 1-2k ft off the deck. Pretty low height to hit stronger winds <2k feet. As the LLWS eases late tonight the marine layer makes a push inland.
Definitely lower confidence (40%) on marine layer details.

Vicinity of SFO...AWW remains in effect through 06z with gusts up to 35kt. That being said, TAF still has 35kt, but latest trends show the peak wind may have just occurred. As winds ease overnight a shallow cig will develop lingering 17-18z Sunday.
Gusty onshore again tomorrow, but not as strong as today.

SFO Bridge Approach...Cigs will be more widespread over portions of the approach than SFO Sunday morning, especially SE area of SF Bay.

Monterey Bay Terminals...Cigs are thinning with VFR at MRY, but MVFR cigs lingering at SNS. Even with thinning, expect cigs to return early tonight lasting into Sunday afternoon.

MARINE
(Tonight through next Friday)
Issued at 609 PM PDT Sat Jun 1 2024

Strong northwest winds with gale force gusts expected over portions of the northern waters today continue into the early night. Winds reduce overnight, but still remain hazardous for small craft across most of the waters. Significant wave heights of up to 11 to 12 feet in the outer waters north of Pigeon Point continue into Saturday night with 6 to 10 feet elsewhere over the open water. Seas begin to diminish towards the end of the weekend and into next week.

CLIMATE
Issued at 127 AM PDT Sat Jun 1 2024

Record high temperatures at the long term climate stations for June 4th and 5th:

Station June 4th June 5th

Santa Rosa 98 in 1949 102 in 1926 Kentfield 101 in 1981 102 in 1926 Napa 102 in 1981 105 in 1903 Richmond 90 in 1955 86 in 1983 Livermore 105 in 1960 104 in 1926 San Francisco 92 in 1949 95 in 1883 SFO Airport 92 in 1955, 1949 89 in 1972 Redwood City 100 in 1981 97 in 2002, 1972 Half Moon Bay 71 in 1955 74 in 1958 Oakland downtown 96 in 1981 87 in 2002 San Jose 98 in 1904 100 in 1926 Salinas Airport 92 in 1949 87 in 1949 King City 102 in 1981, 1957 105 in 1926

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 9 PM PDT this evening for Mry Bay-SF Bay N of Bay Bridge.

Small Craft Advisory from 3 PM to 9 PM PDT Sunday for Mry Bay.

Gale Warning until 3 AM PDT Sunday for Pt Arena to Pt Reyes 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.

Small Craft Advisory until 3 PM PDT Sunday for Pigeon Pt to Pt Pinos 0-10 nm.

Small Craft Advisory until 9 PM PDT Sunday for Pigeon Pt to Pt Pinos 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm.

Gale Warning until 9 PM PDT this evening for Pt Arena to Pt Reyes 10-60 NM.

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San Francisco
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Sat -- 02:00 AM PDT     1.35 feet Low Tide
Sat -- 02:42 AM PDT     Moonrise
Sat -- 05:49 AM PDT     Sunrise
Sat -- 07:53 AM PDT     4.13 feet High Tide
Sat -- 01:32 PM PDT     0.73 feet Low Tide
Sat -- 03:20 PM PDT     Moonset
Sat -- 08:26 PM PDT     Sunset
Sat -- 08:30 PM PDT     5.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

San Francisco, California, Tide feet

Golden Gate Bridge .8 mi E .
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Sat -- 12:31 AM PDT     -2.29 knots Max Ebb
Sat -- 02:42 AM PDT     Moonrise
Sat -- 04:09 AM PDT     0.01 knots Slack
Sat -- 05:49 AM PDT     Sunrise
Sat -- 06:54 AM PDT     2.24 knots Max Flood
Sat -- 09:45 AM PDT     -0.00 knots Slack
Sat -- 12:44 PM PDT     -2.07 knots Max Ebb
Sat -- 03:20 PM PDT     Moonset
Sat -- 04:02 PM PDT     0.01 knots Slack
Sat -- 07:05 PM PDT     2.88 knots Max Flood
Sat -- 08:26 PM PDT     Sunset
Sat -- 10:06 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Golden Gate Bridge .8 mi E ., San Francisco Bay, California Current, knots

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