Sunrise 5:55 AM   Sunset 8:17 PM Moonrise 1:54 PM   Moonset 2:08 AM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 839 Pm Pdt Thu May 16 2024
Tonight - SW wind 10 to 15 kt, easing to 5 to 10 kt late. Waves around 2 ft or less. Fri - SW wind 5 to 10 kt. Waves around 2 ft or less. Fri night - SW wind 5 to 10 kt. Waves around 2 ft or less. Sat - SW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less. Sat night - SW wind 10 to 15 kt. 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. Mon - SW wind 5 to 10 kt. Waves around 2 ft or less. Mon night - SW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less. Tue - SW wind 5 to 10 kt. Waves around 2 ft or less. Tue night - SW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less.

PZZ500 839 Pm Pdt Thu May 16 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
a surface high over the eastern pacific continues to move eastward towards california. Northwesterly winds are strengthening as a result, particularly over the northernmost zones and outer waters. Seas will build to very rough over the outer waters through the early part of next week.

FXUS66 KMTR 170645 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 1145 PM PDT Thu May 16 2024

New AVIATION

SYNOPSIS
Issued at 1227 PM PDT Thu May 16 2024

Quiet weather continues with a persistent marine layer through the weekend. Calm and cloudy mornings will transition to breezy and clear afternoons. A weak cold front will move through next week, bringing stronger westerly winds and cooler inland temperatures.

UPDATE
Issued at 855 PM PDT Thu May 16 2024

Stratus quo this evening across the Bay Area and Central Coast.
Profilers put the marine layer around 2000 feet and the Oakland sounding agrees with the depth around 2100 feet. A quick check of pressure gradients around the region shows the onshore gradient has weakened since yesterday, but regardless it's still over 3mb.
Latest satellite fog product shows the persistent onshore flow is allow the marine layer to make it's nightly march inland. Current forecast remains on track for tonight. As noted below, in addition to clouds patchy drizzle will once again be possible. Hi-res model guidance generates a few hundredths along the coast, which is usually a sign of coastal drizzle.

SHORT TERM
(This evening through Friday)
Issued at 1227 PM PDT Thu May 16 2024

Stratus is continuing to clear. SW flow is delaying the clearing in Santa Cruz, Marin, and Sonoma counties, but there should be a few hours of sunshine before the next round of clouds develop this evening. The marine layer is quite deep, with the Ft. Ord profiler showing marine air from the surface to roughly 2,200 ft. This is quite a bit deeper than models suggest, which has led to some issues with the forecast. Not only are the deeper clouds penetrating further inland than expected, some of the thicker cloud decks have been producing measurable drizzle and light rain in Monterey, Santa Cruz and Napa counties early this morning. The forecast was adjusted to show a 15% chance of rain and 0.01" QPF for these areas tomorrow, as there is no synoptic reason for the marine layer to compress very much.

LONG TERM
(Friday night through next Wednesday)
Issued at 1227 PM PDT Thu May 16 2024

The same pattern will continue through the weekend with cloudy mornings and clear afternoons. The jet stream will take a dip south next week, causing a transition to a troughing pattern early next week. This pattern looks to persist through the week and will bring a few weak cold fronts, cooler temperatures, and breezy NW winds. Coastal drizzle may become a bit more prominent at times as well. High temperatures will reamin in the 60s along the coast, but will cool to the 70s inland.

AVIATION
(06Z TAFS)
Issued at 1144 PM PDT Thu May 16 2024

IFR and MVFR CIGs build inland through the night becoming widespread. Winds ease slightly staying light to moderate. Cloud cover thins in the mid morning to early afternoon Friday, leading to widespread for the TAF sites, but status lingers on the immediate coast. expect moderate winds Friday afternoon and last into the night. Coastal cloud cover moves slightly inland Friday evening, affecting SNS and MRY.

Vicinity of SFO...IFR CIGs last through the mid morning before clearing. Expect moderate westerly winds to reduce into Friday morning, becoming light in the mid morning. Moderate west winds build into Friday afternoon, but reduce into late Friday evening.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...IFR through the the early afternoon Friday with some moments of drizzle. CIGS recede back to the immediate coast into the afternoon, leading to VFR at the TAF sites. Winds stay light to moderate through the TAF Period. IFR CIGs return early Friday evening.

MARINE
(Tonight through next Wednesday)
Issued at 855 PM PDT Thu May 16 2024

A surface high over the Eastern Pacific continues to move eastward towards California. Northwesterly winds are strengthening as a result, particularly over the northernmost zones and outer waters. Seas will build to very rough over the outer waters through the early part of next week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 3 AM PDT Saturday for Pt Arena to Pt Reyes 10-60 NM.

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Petaluma River entrance
Click for Map
Fri -- 03:08 AM PDT     Moonset
Fri -- 04:40 AM PDT     1.70 feet Low Tide
Fri -- 05:57 AM PDT     Sunrise
Fri -- 09:18 AM PDT     4.07 feet High Tide
Fri -- 02:53 PM PDT     Moonrise
Fri -- 04:15 PM PDT     0.84 feet Low Tide
Fri -- 08:16 PM PDT     Sunset
Fri -- 10:27 PM PDT     5.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Petaluma River entrance, San Pablo Bay, California, Tide feet

Petaluma River Approach
Click for Map
Fri -- 01:13 AM PDT     -0.63 knots Max Ebb
Fri -- 03:08 AM PDT     Moonset
Fri -- 04:15 AM PDT     0.00 knots Slack
Fri -- 05:56 AM PDT     Sunrise
Fri -- 06:43 AM PDT     0.43 knots Max Flood
Fri -- 09:35 AM PDT     -0.00 knots Slack
Fri -- 12:51 PM PDT     -0.64 knots Max Ebb
Fri -- 02:53 PM PDT     Moonrise
Fri -- 04:07 PM PDT     0.00 knots Slack
Fri -- 07:21 PM PDT     0.67 knots Max Flood
Fri -- 08:15 PM PDT     Sunset
Fri -- 10:47 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Petaluma River Approach, San Pablo Bay, California Current, knots

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