Sunrise 6:27 AM   Sunset 7:49 PM Moonrise 2:06 PM   Moonset 3:20 AM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 819 Am Pdt Thu Apr 18 2024
Today - SW winds around 5 knots - .increasing to 10 to 15 knots this afternoon. Tonight - SW winds 10 to 15 knots with gusts up to 25 knots. Fri - SW winds 10 to 15 knots. Fri night - SW winds 15 to 20 knots with gusts up to 25 knots. Sat - W winds 10 to 15 knots. Sat night - W winds 10 to 15 knots with gusts up to 25 knots. Sun - W winds 5 to 10 knots. Mon - SW winds 5 to 10 knots.

PZZ500 819 Am Pdt Thu Apr 18 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
expect light to moderate winds into the weekend before breezy to gusty northerly winds arrive Saturday afternoon. Wave heights will start to build heading into the late weekend to early next week. Another moderate period northwest swell arrives over the weekend as well as another light, longer period (18 seconds) southerly swell.

FXUS66 KMTR 182124 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 224 PM PDT Thu Apr 18 2024

New SYNOPSIS, SHORT TERM, LONG TERM

SYNOPSIS
Issued at 142 PM PDT Thu Apr 18 2024

A touch cooler Friday as a weak system moves through. Chance for light drizzle for coastal areas the next couple of days. Temperatures rebound late weekend and early next week. Chance for light rain enters the forecast mid next week.



SHORT TERM
(This evening through Saturday)
Issued at 142 PM PDT Thu Apr 18 2024

Increased cloud cover today along coastal areas south of SF as the marine layer deepens ahead of the approaching weak trough. Still looking like a progressive, open wave, this system will scoot through rather quickly Friday, bringing additional cloud cover and a slight chance for drizzle along coastal locations and higher elevations of the East Bay Friday and Saturday mornings. The other impact from this system will be the breezy NW winds that develop along the coast as the system departs. Generally looking at gusts of 25-30 mph along the immediate coast Saturday afternoon into Sunday afternoon.

LONG TERM
(Saturday night through next Wednesday)
Issued at 142 PM PDT Thu Apr 18 2024

By Sunday, ridging dominates the pattern once again with temps warming back into near 80 for inland areas and 60s to near 70 along the coast. Similar picture into Monday as well. Tuesday brings some changes. Ensemble guidance continues to advertise anomalous troughing over the EPac/West Coast during the mid-to- late next week period, hinting at a pattern that promotes above average precip and below average temperatures. Average precip for the second half of April for our region is roughly a half inch, give or take a few tenths depending on if you're coastal or inland. What we're expecting next week is generally on the order of a trace to a few tenths here and there. Longer terms guidance does show the pattern continuing into next weekend, where there could be additional light rainfall, bringing us into that ballpark of slightly above normal. The main caveat with this forecast is that while there is moderate to high confidence in the overall pattern, the confidence in widespread measurable rainfall is low. In fact, in a grouping of 100 different models, roughly 24 of them advertise any measurable precip for us at all through next weekend. The answer to the question of next week being widespread light rain or just some increased cloudiness and drizzle will need further refinement in future forecasts. For now, plan on the latter half of next week being cool and damp.

AVIATION
(18Z TAFS)
Issued at 1034 AM PDT Thu Apr 18 2024

VFR to continue through the evening with MVFR-IFR returning overnight for most stations. HRRR indicates stratus will return along the coast and move inland around 08-12Z with a slightly earlier return (03-06Z) along the Central Coast. Low to moderate confidence that fog will develop overnight at STS, SNS, and MRY with guidance indicating moderate potential for LIFR conditions at STS and SNS. For most stations, stratus looks to dissipate by mid-morning but at a few stations (STS, APC, SNS, MRY)
dissipation looks to occur by late morning shortly after this TAF period ends. Light to moderate SW to W winds will continue through the day with winds becoming light and variable overnight.

Vicinity of SFO...VFR with MVFR returning overnight. Stratus will return during the early morning with MVFR CIGs and only minor impacts to visibility anticipated. Low confidence that fog will develop at SFO but if lower CIGs do develop 12-16Z looks to be the best time frame. Stratus is expected to clear out by mid-morning between 17-18Z. Moderate W winds persist through the afternoon with light, variable winds returning overnight. Moderate W winds return by mid to late morning tomorrow.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR transitioning to MVFR-IFR overnight.
Guidance indicates MVFR and IFR CIGs will develop overnight with increasing potential for LIFR CIGs to develop, particularly at SNS.
Low to moderate confidence that fog will develop at SNS and MRY. If fog does develop, LIFR CIGs and significantly reduced visibilities are likely. Confidence is higher for fog development at SNS than MRY with guidance indicating high RH values and weak winds between 06- 16Z. Moderate W-NW winds during the day with light, variable winds returning overnight.

MARINE
(Today through Tuesday)
Issued at 1034 AM PDT Thu Apr 18 2024

Expect light to moderate winds into the weekend before breezy to gusty northerly winds arrive Saturday afternoon. Wave heights will start to build heading into the late weekend to early next week.
Another moderate period northwest swell arrives over the weekend as well as another light, longer period (18 seconds) southerly swell.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...None.

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San Francisco
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Thu -- 02:58 AM PDT     2.26 feet Low Tide
Thu -- 04:19 AM PDT     Moonset
Thu -- 06:29 AM PDT     Sunrise
Thu -- 08:33 AM PDT     4.54 feet High Tide
Thu -- 03:06 PM PDT     Moonrise
Thu -- 03:06 PM PDT     0.48 feet Low Tide
Thu -- 07:49 PM PDT     Sunset
Thu -- 10:09 PM PDT     4.95 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 -- 02:31 AM PDT     -1.46 knots Max Ebb
Thu -- 04:19 AM PDT     Moonset
Thu -- 05:06 AM PDT     0.01 knots Slack
Thu -- 06:29 AM PDT     Sunrise
Thu -- 07:58 AM PDT     1.85 knots Max Flood
Thu -- 10:22 AM PDT     -0.01 knots Slack
Thu -- 02:05 PM PDT     -2.26 knots Max Ebb
Thu -- 03:06 PM PDT     Moonrise
Thu -- 05:26 PM PDT     0.00 knots Slack
Thu -- 07:48 PM PDT     Sunset
Thu -- 08:38 PM PDT     2.83 knots Max Flood
Thu -- 11:29 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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