Sunrise 5:51 AM   Sunset 8:21 PM Moonrise 8:04 PM   Moonset 4:37 AM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 838 Am Pdt Thu May 23 2024
Today - W wind 5 to 10 kt, rising to 10 to 15 kt late. Waves around 2 ft or less. Tonight - SW wind 10 to 15 kt. Waves around 2 ft or less. Fri - W wind 10 to 15 kt. Waves around 2 ft or less. Fri night - W wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Waves around 2 ft or less. Sat - W wind 10 to 15 kt, becoming sw 5 to 10 kt in the afternoon. Waves around 2 ft or less. Sat night - SW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less. Sun - SW wind 5 to 10 kt. Waves around 2 ft or less. Sun night - SW wind 5 to 10 kt. Waves around 2 ft or less. Memorial day - SW wind 5 to 10 kt. Waves around 2 ft or less. Mon night - SW wind 5 to 10 kt. Waves around 2 ft or less.

PZZ500 838 Am Pdt Thu May 23 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
building surface high pressure over the eastern pacific ocean will allow for strong northwesterly winds to prevail for one more day today, with gale force gusts across the outer coastal waters. Expect hazardous conditions and steeper wind waves as a result. Northwesterly winds diminish and significant wave heights abate heading into the weekend as surface high pressure over the eastern pacific ocean weakens and retrogrades to the west and a troughing pattern evolves.

FXUS66 KMTR 231514 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 814 AM PDT Thu May 23 2024

New UPDATE

SYNOPSIS
Issued at 1225 PM PDT Wed May 22 2024

Summer-like pattern to persist through Thursday. Temperatures are forecast to dip below seasonal averages this weekend as an upper level trough impacts the region. Temperatures begin to warm Sunday through the next week.

UPDATE
Issued at 809 AM PDT Thu May 23 2024

Satellite shows mostly clear skies over our region with some patchy clouds near Monterey Bay and Salinas. A weak eddy has formed over Monterey Bay that will be circulating some of the clouds throughout the morning, but that area will remain somewhat clear skies. Since today is not a typical "May Grey" morning, definitely take a moment to enjoy some of that sunshine, especially if you're near the coast! No changes were made to the forecast.

SHORT TERM
(Today and tonight)
Issued at 250 AM PDT Thu May 23 2024

Patchy stratus is currently located along the Santa Cruz coastline and extending into portions of Monterey, San Benito, and Santa Clara counties. Stratus coverage may extend a bit farther into Monterey Bay and up the San Mateo coastline but is not expected to expand too far inland. The Fort Ord Profiler shows the top of the marine layer around 1600-1800 feet which is fairly comparable to the depth of the marine layer yesterday. Given persistence, this helps increase confidence that any stratus that develops will stay along the coastline and portions of the Monterey Bay. Overcast conditions are expected to clear out by late morning/early afternoon with some potential for scattered clouds to persist throughout the remainder of the day. Widespread stratus coverage will return fairly early in the evening throughout much of the Bay Area and Central Coast as onshore flow increases and a weak surface low pressure system approaches the coast.

As broad upper level troughing continues and offshore flow weakens, temperatures will continue to cool Thursday with high temperatures on average 1 to 3 degrees cooler than those observed on Wednesday. Across the interior, temperatures will be seasonal with highs generally in the 70s to low 80s but, along the coast, below average temperatures in the mid 50s to low 60s persist. Minor heat risk continues for portions of the Bay Area and Salinas Valley.
Individuals who are extremely sensitive to heat should remember to stay hydrated while outdoors and to take breaks as needed. Slightly drier RH values persist inland during the day on Thursday before higher RH values and increased moisture return inland with this next weak system.

LONG TERM
(Friday through Wednesday)
Issued at 250 AM PDT Thu May 23 2024

A weak low pressure system will move inland Friday into Saturday and bring widespread below average temperatures, increased stratus coverage, and some potential for light drizzle in coastal areas.
Most inland locations will see temperatures 5 to 10 degrees below average but some may see more significant drops with high temperatures 10 to 15 degrees below average. High temperatures throughout the interior will be in the 60s with a few areas of elevated terrain potentially reaching the low 70s. Meanwhile on the coast, temperatures will struggle to make it out of the upper 50s and into the lower 60s Friday and Saturday. Ensemble and hi-res guidance continue to suggest light drizzle, particularly in the Monterey Bay region, is likely along the coast with non-impactful accumulations typically less than 0.1". By Monday, shortwave ridging will build over the West Coast with inland temperatures warming into the upper 70s to low 80s and coastal temperatures into the upper 50s to mid 60s.

If you are not a fan of the cooler weather we have been having, you are in luck! Updated CPC graphics show above average temperatures will become increasingly likely by early June. During this same time frame, long term guidance is showing upper level ridging building and, for the most part, lingering over the West Coast. Given that this scenario is still a ways out, we will have to wait and see how guidance continues to trend and how the forecast evolves.

AVIATION
(12Z TAFS)
Issued at 410 AM PDT Thu May 23 2024

VFR through today except around Monterey Bay, where MVFR stratus will persist into the morning to afternoon hours. Stratus returns tonight with greater coverage around portions of the greater Bay Area. Light surface winds along with strong northerly winds aloft will lead to LLWS concerns at KAPC this morning.

Vicinity of SFO...Generally clear but with at least SCT low stratus in the vicinity by late tonight. Most likely outcome is VFR through the TAF period, but at least a low potential for MVFR ceilings to reach the terminal towards the mid morning hours on Friday. This will be fine tuned with future updates. The other issue is gusty onshore winds which will develop for this afternoon into this evening. High confidence in gusts reaching 30 kt around/after 22Z and likely to remain there through 06/07Z. Low confidence in exceeding Airport Weather Warning criteria of 35 kt but this will be monitored.

SFO Bridge Approach...Similar to SFO

Monterey Bay Terminals...Low stratus is patchy early this morning and may come and go at the terminals through late morning with MVFR to periodically VFR conditions. Stratus will clear towards the coast this afternoon, with low confidence in whether KMRY will scatter out or remain in MVFR. For now the TAF calls for a period of partial afternoon clearing, but adjustments based on trends may be necessary. MVFR ceilings will expand overnight into Friday with cool and breezy onshore winds persisting.

MARINE
(Today through Tuesday)
Issued at 410 AM PDT Thu May 23 2024

Building high pressure over the Eastern Pacific will allow strong northwesterly winds to prevail today, with gale force gusts across the outer waters. Expect hazardous conditions and steeper wind waves as a result. Winds diminish somewhat heading into the weekend as high pressure weakens and a troughing pattern evolves.
However breezy to gusty conditions should persist in the outer waters heading into early next week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this evening for Mry Bay.

Gale Warning until 9 AM PDT this morning for Pt Arena to Pt Reyes 0-10 nm.

Gale Warning from 3 PM this afternoon to 9 PM PDT this evening for Pt Arena to Pt Reyes 0-10 nm.

Small Craft Advisory until 3 PM PDT this afternoon for Pt Arena to Pt Reyes 0-10 nm.

Small Craft Advisory until 3 PM PDT Friday for Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.

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

Small Craft Advisory from 9 AM to 3 PM PDT Friday for Pigeon Pt to Pt Pinos 0-10 nm.

Gale Warning until 3 AM PDT Friday for Pt Arena to Pt Reyes 10- 60 NM.

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

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San Francisco
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Thu -- 05:38 AM PDT     Moonset
Thu -- 05:53 AM PDT     Sunrise
Thu -- 06:14 AM PDT     -0.92 feet Low Tide
Thu -- 06:55 AM PDT     Full Moon
Thu -- 01:36 PM PDT     4.21 feet High Tide
Thu -- 05:43 PM PDT     2.89 feet Low Tide
Thu -- 08:20 PM PDT     Sunset
Thu -- 09:04 PM PDT     Moonrise
Thu -- 11:53 PM PDT     5.96 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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Thu -- 01:06 AM PDT     -0.00 knots Slack
Thu -- 04:48 AM PDT     -3.38 knots Max Ebb
Thu -- 05:37 AM PDT     Moonset
Thu -- 05:53 AM PDT     Sunrise
Thu -- 06:55 AM PDT     Full Moon
Thu -- 08:29 AM PDT     0.01 knots Slack
Thu -- 11:31 AM PDT     3.27 knots Max Flood
Thu -- 02:57 PM PDT     -0.01 knots Slack
Thu -- 05:22 PM PDT     -1.48 knots Max Ebb
Thu -- 08:06 PM PDT     0.00 knots Slack
Thu -- 08:20 PM PDT     Sunset
Thu -- 09:04 PM PDT     Moonrise
Thu -- 11:00 PM PDT     2.17 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION

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

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