Sunrise 6:09 AM   Sunset 8:03 PM Moonrise 2:46 AM   Moonset 2:09 PM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 845 Pm Pdt Fri May 3 2024
Tonight - W winds 10 to 20 knots with gusts up to 25 knots - . Becoming sw with gusts up to 30 knots after midnight. Rain after midnight. Sat - W winds 15 to 25 knots. Rain.Sat night - W winds 10 to 20 knots with gusts up to 25 knots. Sun - W winds 10 to 15 knots. Sun night - W winds 10 to 15 knots with gusts up to 25 knots. Mon - W winds 10 to 15 knots. Mon night - W winds 10 to 15 knots. Tue - NW winds 10 to 15 knots. Wed - NW winds 10 to 15 knots.

PZZ500 845 Pm Pdt Fri May 3 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
expect breezy to gusty northwest winds to continue with gale force gusts possible over the southernmost zones. This evening, a low pressure system and associated cold front will arrive from the north, bringing rain and moderate to fresh breezes across the waters. Winds will turn briefly southwesterly ahead of the system early Saturday morning, but turn to become northwesterly once more in the late part of Saturday morning. Rain ceases late in the day Saturday, and winds ease to become moderate into the new workweek.

FXUS66 KMTR 040408 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 908 PM PDT Fri May 3 2024

New UPDATE, MARINE

SYNOPSIS
Issued at 1237 PM PDT Fri May 3 2024

Cold front on track to bring widespread rain, cooler temperatures, and gusty winds this weekend. Dry weather returns Sunday with a gradual warming trend through next week.

UPDATE
Issued at 907 PM PDT Fri May 3 2024

The forecast for the incoming low pressure system remains largely on track with minimal changes. HRRR guidance shows the low slowing down slightly with rain arrival times pushes back by an hour or two. Rain will arrive during the early to late morning hours moving north to south. Based on HRRR guidance, the most likely arrival times are 3AM- 5AM for the North Bay, 7AM-10AM for the East Bay and South Bay, and 8AM-11AM for the Central Coast. Rainfall totals look largely the same with between 0.5-1.0 inches expected in the Bay Area and 0.2- 0.5 inches expected in portions of the Central Coast. Locally higher precipitation totals are expected in the coastal North Bay mountains and the Santa Cruz mountains. Gusty winds will extend inland from the coast as the system passes with gusts between 25-30 mph possible. Trend for below average daytime and overnight temperatures tomorrow through the early work week remains on track.

SHORT TERM
(This evening through Saturday)
Issued at 1237 PM PDT Fri May 3 2024

Mostly clear skies over the region today ahead of the next cold front. Ample cloud cover associated with the front now moving into the northern portions of the state will continue to move southward through tonight. Areas of light rainfall are expected to begin early Saturday morning along favored west-facing upslope areas in the coastal ranges as moist low-level westerly flow increases ahead of the front. Much of the surface front should be through the Bay Area by mid-morning, and late morning for areas further south along the Central Coast. Aided by a robust 150 kt NW-SE oriented jet on the back side of the low, this will be a rather quick-moving front with little-to-no chance of stalling. However, this jet and continued support of an enhanced northwesterly Eastern Pacific jet along the West Coast will support gusty northwest winds to 25-35 mph along coastal areas and NW-SE oriented valleys through the weekend. Rainfall amounts Saturday will be in the ball park of 0.4-0.75" for most locations, with a few seeing upwards of 1-1.25" in the coastal ranges of the North Bay and the Santa Cruz Mtns.

Behind the cold front Saturday afternoon and evening, there is a slight chance for isolated thunderstorms across the area.
Scattered showers will persist into Saturday evening, but conditions appear favorable for a few locally strong updrafts that would support a rumble of thunder or two, as well as small hail.
Deep convection would not be supported, given limited cooling aloft, promoting a more stable environment aloft. Thus, any storms that do develop would be relatively short-lived. Really nothing out of the ordinary for us during these typical cold core systems, just more resemblant of a system we'd see in January rather than May.

LONG TERM
(Sunday through next Thursday)
Issued at 1237 PM PDT Fri May 3 2024

Sunday looks to be on the drier side with the low departing.
Temperatures the next few days will be on the cool side with afternoon high temps dropping by as much as 18 degrees for inland locations. Low temps Sunday morning will be in the 40s for most, with a few pockets of upper 30s for inland and high elevation areas. Otherwise, a warm up is on tap for the rest of next week as the pattern becomes more ridge-dominant. By Wednesday, expect afternoon highs in the 70s to near 80, and the mid-to-upper 60s along the coast.

AVIATION
(18Z TAFS)
Issued at 1126 AM PDT Fri May 3 2024

VFR lasts until the early to mid evening for most terminals before IFR/LIFR level clouds move inland. Winds stay W/NW and remain gusty through the evening. As stratus approaches in the evening, winds become light to moderate, and slowly turn to become more S/SW ahead of the approaching low pressure system. By the mid morning hours of Saturday, most terminals will see winds increase once more to become breezy and gusty out of the SW, and rain begins, lowering visibilities at terminals. Cloud decks are expected to improve to become IFR/MVFR as the rain approaches.
Rain continues into Saturday afternoon before dissipating, with winds turning to become N/NW and breezy.

Vicinity of SFO...VFR conditions last through the evening, with strong wings gusting to around 35 knots expected. Stratus makes moves inland in the late evening, bringing IFR conditions as winds reduce. Winds reduce further into the night and turn southwesterly. These winds become gusty as the rain arrives early Saturday morning with MVFR CIGs and slight reductions in visibilty.Winds turn to become W/NW in the later morning, but rain lasts through the afternoon.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...IFR/LIFR CIGs push inland in the early evening. IFR/LIFR CIGs last through the majority of the overnight hours with lighter winds. As the rain band arrives, expect CIGs lift to become IFR/MVFR late Saturday morning. Gusty westerly winds build along the rain band.

MARINE
(Tonight through next Thursday)
Issued at 907 PM PDT Fri May 3 2024

Expect breezy to gusty northwest winds to continue with gale force gusts possible over the southernmost zones. This evening, a low pressure system and associated cold front will arrive from the north, bringing rain and moderate to fresh breezes across the waters. Winds will turn briefly southwesterly ahead of the system early Saturday morning, but turn to become northwesterly once more in the late part of Saturday morning. Rain ceases late in the day Saturday, and winds ease to become moderate into the new workweek.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory from 9 AM to 9 PM PDT Saturday for Pigeon Pt to Pt Pinos 0-10 nm.

Gale Warning until 9 AM PDT Saturday for Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory from 3 AM to 9 AM PDT Saturday for Pt Arena to Pt Reyes 10-60 NM.

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San Francisco
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Fri -- 02:13 AM PDT     2.08 feet Low Tide
Fri -- 03:46 AM PDT     Moonrise
Fri -- 06:11 AM PDT     Sunrise
Fri -- 07:58 AM PDT     4.76 feet High Tide
Fri -- 02:15 PM PDT     -0.00 feet Low Tide
Fri -- 03:09 PM PDT     Moonset
Fri -- 08:02 PM PDT     Sunset
Fri -- 09:20 PM PDT     5.35 feet High Tide
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San Francisco, California, Tide feet

Golden Gate Bridge .8 mi E .
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Fri -- 01:04 AM PDT     -1.84 knots Max Ebb
Fri -- 03:46 AM PDT     Moonrise
Fri -- 04:27 AM PDT     0.01 knots Slack
Fri -- 06:10 AM PDT     Sunrise
Fri -- 07:08 AM PDT     2.12 knots Max Flood
Fri -- 09:52 AM PDT     -0.00 knots Slack
Fri -- 01:12 PM PDT     -2.64 knots Max Ebb
Fri -- 03:09 PM PDT     Moonset
Fri -- 04:41 PM PDT     0.00 knots Slack
Fri -- 07:46 PM PDT     3.23 knots Max Flood
Fri -- 08:02 PM PDT     Sunset
Fri -- 10:53 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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