Sunrise 6:25 AM   Sunset 7:51 PM Moonrise 4:03 PM   Moonset 4:04 AM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 814 Pm Pdt Fri Apr 19 2024
Today - SW winds 10 to 15 knots. Tonight - SW winds 10 to 15 knots with gusts up to 25 knots. Patchy drizzle. Sat - SW winds 10 to 15 knots with gusts up to 25 knots. Sat night - W winds 10 to 15 knots. Sun - W winds 5 to 10 knots. Sun night - SW winds 10 to 15 knots. Mon - SW winds 10 to 15 knots. Tue - SW winds 10 to 15 knots.

PZZ500 814 Pm Pdt Fri Apr 19 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
light to moderate breezes continue through Friday night before northwesterly winds increase to become strong and gusty Saturday evening. SWell builds into Sunday out of the northwest as gusty conditions continue but looks to diminish towards the middle part of the next week. Light southerly swell continues to move through the waters this weekend and through the next work week.

FXUS66 KMTR 200555 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 1055 PM PDT Fri Apr 19 2024

New AVIATION, MARINE

SYNOPSIS
Issued at 1206 PM PDT Fri Apr 19 2024

A bit cooler across the board today with cloud cover in addition to a deeper marine influence. Continued cloudiness to start the weekend and a dry stretch going into next week. Potential drizzle/light rain chances mid-to-late next week.

UPDATE
Issued at 824 PM PDT Fri Apr 19 2024

It's a relatively quiet evening across the area with low stratus already onshore across portions of the North Bay and along the Big Sur coast. Given the relatively deep/moist marine layer expect stratus to expand to encompass much of the region late tonight into Saturday morning before clouds retreat to the coast by afternoon. Some orographically enhanced drizzle is possible tonight along the coast as well. This is all represented in the going forecast which is in good shape. Therefore no update is needed for this evening.

SHORT TERM
(This evening through Saturday)
Issued at 1206 PM PDT Fri Apr 19 2024

Well defined marine layer up to about 2,000 feet remains in place this afternoon per Fort Ord profiler. Expecting this to remain in place through into Saturday as the responsible upper low moves through and the onshore flow increases through tomorrow. Though the deep marine layer remains locked in through Saturday, the associated cloud cover will mix out during the afternoon, much like today, and give way to a rather pleasant afternoon. Locations right along the coast may see more persistent cloud cover lasting later in the day, however. Otherwise, expect northwest winds to increase Saturday afternoon, becoming breezy up to 25-35 mph along the coast and nearby coastal hills.

LONG TERM
(Saturday night through next Thursday)
Issued at 1206 PM PDT Fri Apr 19 2024

To end the weekend and start next week, ridging takes over the pattern once again with afternoon highs increasing by a couple of degrees for Sunday and Monday. Tuesday brings the next big change in the weather as the well-advertised upper low moves into the region. The most notable changes that will be noticed Tuesday are cooler temps and increased cloud cover. Really not much change to the forecast beyond that through the rest of the week. Certainty regarding rainfall remains about the same with still only about 25 out of 100 members advertise anything measurable. Again, the most likely scenario as of now will be drizzle in the hills and coastal areas with perhaps some pockets of sprinkles here and there.

AVIATION
(06Z TAFS)
Issued at 1055 PM PDT Fri Apr 19 2024

Current VFR conditions tonight are expected to give way to scattered MVFR/IFR conditions. Terminals nearest to the coast are the most favored to see conditions deteriorate to MVFR/IFR as stratus slowly makes its way to the coast overnight. However, confidence in CIG development is only moderate, as the 00Z KOAK sounding indicates a decent dry layer in the mid to lower atmosphere.
Mixing of winds aloft may help to dry out the lower atmosphere as well. Model soundings also seem to reflect this. This may inhibit stratus development and prevent it from becoming as widespread in coverage as in previous nights. That being said, any CIGs that do develop tonight should be lower than those seen last night now that the shortwave trough has exited, which would have provided more lift. Lacking that tonight, the marine layer sits around 1300-1500' approximately. Thoughts are that terminals impacted by stratus tonight will see CIGs in the IFR range predominantly, and just a few on the cusp of MVFR. Clearing of stratus expected on the earlier side in the morning of Saturday, generally around 16Z.
Into the afternoon, breezy to moderate onshore winds increase and last through the evening, with wind shear developing in the North Bay and select SF bay terminals.

Vicinity of SFO...Currently VFR, expected to become MVFR in the early to mid morning of Saturday as low clouds develop. Current satellite imagery shows stratus just beginning to push into the SF bay. Clearing of stratus towards 16/17Z, with moderate to high confidence. Onshore winds moderate and gusting to around 25 knots in the afternoon.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Stratus currently sits away from the coast, but is expected to impact the terminals shortly, bringing IFR CIGs .
The Ft. Ord profiler shows a much more compressed marine layer compared to last night, bringing higher confidence in the development of IFR CIGs . Clearing is expected towards 17Z, and winds increase into the afternoon to become onshore and breezy once more.
Stratus does not appear to make a return until after the current TAF period.

MARINE
(Tonight through next Thursday)
Issued at 1055 PM PDT Fri Apr 19 2024

Light to moderate breezes continue through Friday night before northwesterly winds increase to become strong and gusty Saturday evening. Swell builds into Sunday out of the northwest as gusty conditions continue but looks to diminish towards the middle part of the next week. Light southerly swell continues to move through the waters this weekend and through the next work week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory from 3 PM Saturday to 3 AM PDT Sunday for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm.

Small Craft Advisory from 9 AM to 9 PM PDT Saturday for Pt Pinos to Pt Piedras Blancas 0-10 nm.

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San Francisco
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Sat -- 04:23 AM PDT     1.30 feet Low Tide
Sat -- 05:04 AM PDT     Moonset
Sat -- 06:26 AM PDT     Sunrise
Sat -- 10:25 AM PDT     4.54 feet High Tide
Sat -- 04:17 PM PDT     0.92 feet Low Tide
Sat -- 05:02 PM PDT     Moonrise
Sat -- 07:50 PM PDT     Sunset
Sat -- 10:57 PM PDT     5.24 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 -- 12:00 AM PDT     -0.00 knots Slack
Sat -- 03:18 AM PDT     -2.11 knots Max Ebb
Sat -- 05:04 AM PDT     Moonset
Sat -- 06:26 AM PDT     Sunrise
Sat -- 06:27 AM PDT     0.00 knots Slack
Sat -- 09:23 AM PDT     2.56 knots Max Flood
Sat -- 12:07 PM PDT     -0.00 knots Slack
Sat -- 03:20 PM PDT     -2.28 knots Max Ebb
Sat -- 05:02 PM PDT     Moonrise
Sat -- 06:39 PM PDT     0.00 knots Slack
Sat -- 07:50 PM PDT     Sunset
Sat -- 09:37 PM PDT     2.81 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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