NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION. Privacy and Cookie policy

PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 833 Am Pst Sat Dec 2 2023
Today..W winds 5 to 10 knots. Wind waves 1 ft. W swell 5 to 7 ft at 13 seconds. A chance of rain.
Tonight..SW winds 5 to 10 knots. W swell 6 to 8 ft at 14 seconds. A slight chance of rain.
Sun..SW winds 5 to 10 knots. W swell 6 to 8 ft at 15 seconds. A slight chance of rain.
Sun night..NW winds around 5 knots. Wind waves 2 to 3 ft. W swell 6 to 8 ft at 14 seconds.
Mon..N winds 5 to 10 knots. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 16 seconds and S 2 to 3 ft at 7 seconds.
Mon night..N winds around 5 knots. Wind waves 2 to 3 ft. W swell 7 to 9 ft at 16 seconds.
Tue..NW winds 5 to 10 knots. Wind waves 2 to 3 ft. W swell 8 to 10 ft.
Wed..W winds 10 to 15 knots. Wind waves 1 ft. W swell 10 to 12 ft. A chance of rain.
...san francisco bar/fourfathom bank forecast.....
in the deep water channel...mixed seas of 5 to 6 ft at 13 seconds.
across the bar...mixed seas of 6 to 7 ft at 13 seconds. Maximum ebb current of 1.0 kt at 08:35 am Saturday and 2.3 kt at 07:30 pm Saturday.

PZZ500 833 Am Pst Sat Dec 2 2023
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
gentle to moderate westerly breezes will continue today and through the weekend with chances for rain across the northern waters. Northwest swell will build today into Sunday, resulting in elevated seas of 8 to 10 feet that will be hazardous to small craft across the northern waters. A series of larger northwest swells with a 16-20 second period will result in a continuation of elevated and hazardous seas through much of the upcoming week.

FXUS66 KMTR 021643 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 843 AM PST Sat Dec 2 2023

New UPDATE

SYNOPSIS
Issued at 233 AM PST Sat Dec 2 2023

Cool, unsettled weather for the next few days followed by a warming trend into early next week. An approaching trough of low pressure towards the middle of the upcoming week will bring the return of unsettled weather.

UPDATE
Issued at 842 AM PST Sat Dec 2 2023

Dreary start to your Saturday with a mix of sun/clouds, cool/damp conditions and scattered showers. KMUX radar, located in the Santa Cruz Mts, continues to show widely scattered showers moving through the Bay Area and Central Coast. Rainfall amounts over the last six hours range greatly - trace to no precip South Bay southward to a few hundredths Santa Cruz Mts/San Francisco Bay northward. Current forecast calls for lingering showers through out the day and see no reason to update the forecast. While today will not be a wash out, hit or miss showers will be possible.
Additional rainfall today will be on par with the last six hours - a few hundredths to maybe a tenth with a stronger showers.



SHORT TERM
(Today and tonight)
Issued at 233 AM PST Sat Dec 2 2023

Isolated showers are moving across the region this morning mainly across the North Bay, San Francisco Bay Area and down into the Santa Cruz Mountains. They may reach the Central Coast late this morning, but amounts are anticipated to be light. By this afternoon, the focus for additional precipitation will shift north across the North Bay.

Another cool afternoon is in store with temperatures struggle to warm much beyond the mid 60s across the interior, upper 50s elsewhere and upper 40s to lower 50s in the highest peaks.
Tonight, look for temperatures to cool into the lower 50s in the hills and around the San Francisco Bay Shoreline to the mid 40s elsewhere.

LONG TERM
(Sunday through Friday)
Issued at 233 AM PST Sat Dec 2 2023

A subtle warming trend will get underway on Sunday and then become more robust Monday into Tuesday. By Monday the interior is expected to reach the lower 70s and mid 70s by Tuesday. This warm up will be short-lived as the next mid/upper level trough approaches the West Coast.

Cooling will take place on Wednesday across the North Bay while mild conditions prevail over the Central Coast. This is when/where precipitation chances increase late Tuesday night into Wednesday.
Cool, unsettled weather will continue into Friday.

Once the precipitation tapers off on Friday the focus then turns to overnight lows. Longer range guidance suggests another round of chilly to cold night with frost/freeze conditions possible.

AVIATION
(12Z TAFS)
Issued at 345 AM PST Sat Dec 2 2023

Light scattered showers continue to move SE across the Bay Area, now moving into the Central Coast region. Mixed bag of ceiling conditions being observed currently with the North Bay terminals under IFR cigs, while the SF Bay Area remains under MVFR cigs and the Monterey Bay region VFR. Unsettled weather across the Pacific NW will result in sufficient lift/moisture across the Bay Area where VCSH will linger through the afternoon today. Across the North Bay, cigs are expected to lift to MVFR levels by the afternoon, but IFR cigs will return by the evening. For Bay Area and Central Coast terminals, MVFR cigs will persist through the late morning/early afternoon. Conditions improve to VFR during the late afternoon before MVFR cigs return in the evening. Generally light to breezy W/SW winds expected today.

Vicinity of SFO...Radar indicates light shower activity across the Bay Area, which will continue to be intermittent through the afternoon today. Moderate confidence that intermittent MVFR cigs will persist through at least 19z at SFO and longer through 21z at OAK. Conditions expected to improve to VFR briefly through the afternoon as cigs lift. MVFR cigs return by 05z-06z. Winds are currently southeasterly and will shift SW by early afternoon remaining under 10 knots.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Currently VFR but tempo included for later in the morning (15z-19z) for MVFR cig potential as scattered showers move through. SE winds will shift NW by late morning. Higher confidence that MVFR cigs return by the early evening.

MARINE
(Today through Thursday)
Issued at 233 AM PST Sat Dec 2 2023

Gentle to moderate westerly breezes continue through the weekend with chance for rain across the northern waters. Northwest swell will build today into Sunday, resulting in elevated seas of 8 to 10 feet that will be hazardous to small craft across the northern waters. A series of larger northwest swells with a 16-20 second period will result in a continuation of elevated and hazardous seas through much of the upcoming week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 9 PM PST Sunday for Pt Arena to Pt Reyes 10-60 NM.

toggle option: (graph/table)

Half Moon Bay
Click for Map
Sat -- 03:11 AM PST     4.37 feet High Tide
Sat -- 07:06 AM PST     Sunrise
Sat -- 07:55 AM PST     3.51 feet Low Tide
Sat -- 11:45 AM PST     Moonset
Sat -- 12:54 PM PST     4.84 feet High Tide
Sat -- 04:51 PM PST     Sunset
Sat -- 08:21 PM PST     0.06 feet Low Tide
Sat -- 09:52 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Half Moon Bay, California, Tide feet

South Channel
Click for Map
Sat -- 12:40 AM PST     1.24 knots Max Flood
Sat -- 04:34 AM PST     -0.01 knots Slack
Sat -- 06:27 AM PST     -0.58 knots Max Ebb
Sat -- 07:07 AM PST     Sunrise
Sat -- 09:33 AM PST     0.00 knots Slack
Sat -- 11:46 AM PST     Moonset
Sat -- 12:06 PM PST     0.59 knots Max Flood
Sat -- 03:02 PM PST     -0.00 knots Slack
Sat -- 04:51 PM PST     Sunset
Sat -- 06:26 PM PST     -1.49 knots Max Ebb
Sat -- 09:51 PM PST     Moonrise
Sat -- 10:16 PM PST     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

South Channel, San Francisco Bay Approach, California Current, knots

Full Color Weather Map

Link to Loop


Other links: GEOS-West     Contential US     Full GOES-East

San Francisco Bay Area, CA,