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- 855 Am Pdt Fri May 3 2024
Today - W winds 10 to 15 knots. Tonight - SW winds 10 to 20 knots with gusts up to 30 knots. Rain.Sat - SW winds 10 to 20 knots with gusts up to 30 knots. Rain.Sat night - W winds 10 to 20 knots with gusts up to 30 knots. Sun - W winds 10 to 15 knots. Sun night - W winds 10 to 15 knots. Mon - W winds 10 to 15 knots. Tue - W winds 10 to 15 knots.

PZZ500 855 Am 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 - .
fresh and gusty northwesterly winds persist through the day today with gale force gusts will be possible, especially 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 032016 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 116 PM PDT Fri May 3 2024

New SYNOPSIS, SHORT TERM, LONG TERM

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.

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 prevails through the daytime today, though stratus makes a return in the early to mid evening for most terminals, bringing largely IFR/LIFR conditions as ridging continues to squash cloud decks. Winds generally W/NW and strong today, with gusts around 20- 25 knots, higher at SFO. As stratus approaches in the evening, winds ease, but remain close to 10 knots through much of the night, 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 MVFR around the same time to slightly after when rain approaches as greater lifting from associated low pressure is enabled. Rain continues through the end of the TAF period for most terminals, with winds turning to become N/NW and breezy.

Vicinity of SFO...VFR conditions last through the afternoon today, with strong and gusty onshore winds. Max gusts up to 35 knots are expected. Stratus makes an early return in the evening, bringing IFR conditions. Models suggest a reduction to LIFR conditions in the overnight hours, but at this time, confidence in that development is low. Have kept CIGS IFR and then improving to MVFR in the later morning for now. Rain and gusty SW winds begin just prior to sunrise Saturday for KSFO. 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...Conditions improve to VFR in the early afternoon today, though only for a few hours before stratus and IFR/LIFR CIGs make a quick push inland in the early evening. Winds NW and breezy this afternoon, but easing into the evening to below 10 knots. IFR/LIFR CIGs last through the majority of the overnight hours. Towards the late morning of Saturday, rain begins and CIGs lift to become IFR. Some model solutions hint at CIGs lifting enough to become MVFR by the end of the TAF period. However, confidence in this outcome is low at this time. For now, have left CIGs as lifting, but remaining in IFR through the end of the TAF period.

MARINE
(Today through Wednesday)
Issued at 457 AM PDT Fri May 3 2024

Strong and gusty northwesterly winds will persist for yet another day as the region remains in between high pressure over the Eastern Pacific Ocean and low pressure over the Southwest. Gale force gusts will be possible, especially over the coastal waters and southernmost zones. Tonight, a cold front will drop down from the Pacific Northwest bringing rain and moderate to fresh breezes across the waters. As the low pressure system exits to the east and the pressure gradient is allowed to relax, winds will diminish going into next week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 9 PM PDT this evening 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 Reyes to Pigeon Pt 0-10 nm.

Gale Warning until 3 AM PDT Saturday for Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory until 3 PM PDT this afternoon for Pt Arena to Pt Reyes 10-60 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
Tide / Current data from XTide NOT FOR NAVIGATION

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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