Half Moon Bay, CA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Half Moon Bay, CA

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May 28, 2023 7:56 PM PDT (02:56 UTC)
Sunrise 5:49AM   Sunset 8:23PM   Moonrise  12:57PM   Moonset 1:28AM 

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

Marine Forecasts
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PZZ531 San Francisco Bay South Of The Bay Bridge- 240 Pm Pdt Sun May 28 2023
This afternoon..W winds 10 to 20 knots with gusts up to 25 knots.
Tonight..SW winds 15 to 20 knots with gusts up to 25 knots.
Memorial day..SW winds 15 to 20 knots with gusts up to 25 knots.
Mon night..W winds 15 to 20 knots with gusts up to 25 knots.
Tue..SW winds 10 to 15 knots.
Tue night..W winds 10 to 20 knots with gusts up to 25 knots.
Wed..SW winds 15 to 20 knots with gusts up to 25 knots.
Thu..SW winds 10 to 15 knots.
PZZ500 240 Pm Pdt Sun May 28 2023
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
moderate northwest winds continue into memorial day with the strongest winds over the northern outer waters. Winds becoming southerly Monday, and back to northwesterly by Tuesday afternoon. Breezy to gusty westerly winds are also expected across the san francisco bay, san pablo bay, suisun bay, and the delta each afternoon. Longer period background southerly swell continues through late next week.


7 Day Forecast for Marine Location Near Half Moon Bay, CA
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location: 37.47, -122.48


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 290049 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 549 PM PDT Sun May 28 2023

New AVIATION, MARINE

SYNOPSIS
Issued at 1256 PM PDT Sun May 28 2023

A cutoff low continues to drift off the coast of California, helping to bring cooler than normal temps to the region that will persist through the upcoming week. Low clouds/stratus will continue to be present in coastal areas, with clearing expected in the late afternoons, before a return into the evening.

SHORT TERM
(This evening through Monday)
Issued at 1256 PM PDT Sun May 28 2023

Radar imagery currently shows rainshowers off of the Marin county coastline as the center of the cutoff low spins just off the San Mateo coast. Light rain, about 0.01" thus far, has been reported in a few northern coastal and Bay Area locations as a result.
That being said, not expecting much more than a few hundredths in these localized spots, and for any chances of light rainfall to diminish by the evening.

For the far northern portions of Sonoma and Napa counties, there does exist a slight (15%) chance of thunderstorms in the late afternoon to early evening, so if thunder roars, go indoors.
Localized heavier rainfall, lightning, and small hail are risks associated with these thunderstorms. The slight chances for thunderstorms in this area look to dissipate into the night as surface heating diminishes with sunset.

Aside from the light rainfall seen today, persistence continues to be the name of the game. Continued troughing will keep temperatures on the cool side the next few days, with highs in the mid 60s for Bays, and closer to mid 70s for more interior locations. Widespread low clouds and stratus will continue to intrude over the bays and coastal zones potentially bringing drizzle, then clearing in the late afternoons.

LONG TERM
(Monday night through next Saturday)
Issued at 1256 PM PDT Sun May 28 2023

Over the next few days, the cutoff low will continue to meander down and just off of the coast, without any steering mechanism, before slowly exiting to the southwest towards mid to late week.
Ridging looks to build in beyond this, bringing slightly warmer temperatures than what has been seen lately. However, longer term model guidance suggests continued troughing and cooler than normal temperatures to persist through the early portions of June.
Stay tuned for updates.

AVIATION
(00Z TAFS)
Issued at 549 PM PDT Sun May 28 2023

The center of the closed upper level low pressure system is located approx 70 miles west of San Francisco. Clouds are a mix of stratiform and convective and it's mainly IFR-MVFR along the coast, VFR elsewhere.
Forecast areal cloud coverage and thicknesses varying alot tonight to predawn Monday morning subsequently varying, in many locations slowing outgoing radiative cooling to space and further saturation and low cloud development. On Memorial Day, clouds /IFR-MVFR/ lifting to VFR inland, last to clear along the coast where MVFR continues to late morning or early afternoon. Low clouds /IFR-MVFR/ moving inland Monday night and Tuesday morning.

Vicinity of SFO...SCT vs BKN ceiling /MVFR/ and west wind near 15 knots early evening, MVFR prevailing from 02z, IFR from 09z tonight. IFR ceiling Memorial Day lifting to VFR late morning, west wind increasing to near 15 knots in the afternoon.

SFO Bridge Approach...Similar to SFO.

Monterey Bay...MVFR ceilings lowering to IFR this evening, IFR tonight and Memorial Day morning. Patchy light drizzle developing tonight. IFR lifting to MVFR on Memorial Day by late morning or early afternoon.

MARINE
(Tonight through next Friday)
Issued at 449 PM PDT Sun May 28 2023

Moderate northwest winds continue into Memorial Day with the strongest winds over the northern outer waters. Winds becoming southerly Monday, and back to northwesterly by Tuesday afternoon.
Breezy to gusty westerly winds are also expected across the San Francisco Bay, San Pablo Bay, Suisun Bay, and the Delta each afternoon. Longer period background southerly swell continues through late next week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 9 PM PDT this evening for PZZ570.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
RTYC1 - 9414523 - Redwood City, CA 14 mi57 min WNW 9.9G12 57°F 68°F29.90
46237 - San Francisco Bar, CA (142) 23 mi57 min 54°F 58°F4 ft
AAMC1 - 9414750 - Alameda, CA 23 mi57 min W 8G11 55°F 29.93
FTPC1 - 9414290 - San Francisco, CA 23 mi57 min SSW 5.1G9.9 54°F 60°F29.90
PXOC1 - 9414311 - San Francisco (Pier 1), CA 23 mi57 min SW 7G15 54°F 29.89
OBXC1 24 mi57 min 55°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 24 mi57 min W 8.9G14
LNDC1 25 mi57 min WSW 7G13 55°F 29.92
OKXC1 - 9414776 - Oakland (Berth 34), CA 25 mi57 min W 8G12 54°F 29.92
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 27 mi47 min W 7.8G9.7 56°F29.94
TIBC1 - Tiburon Pier, San Francisco Bay, CA 29 mi101 min SSW 15 54°F 29.8949°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 31 mi57 min SW 14G18 56°F 29.92
RCMC1 - 9414863 - Richmond, CA 32 mi57 min SW 8.9G16 55°F 29.90
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 42 mi57 min SW 16G18 56°F 29.88
MZXC1 - 9415102 - Martinez-Amorco CA 43 mi57 min SSW 13G15 58°F 65°F29.88
46269 44 mi57 min 55°F3 ft
UPBC1 44 mi57 min WSW 12G18
PRYC1 - 9415020 - Point Reyes, CA 45 mi57 min 29.91
PCOC1 - 9415144 - Port Chicago, CA 47 mi57 min SW 12G17 60°F 65°F29.87
46042 - MONTEREY - 27NM West of Monterey Bay, CA 48 mi47 min NW 9.7G12 54°F 55°F29.9552°F

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Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KHAF HALF MOON BAY,CA 3 sm21 mincalm1/2 smOvercast Mist 54°F50°F88%29.94
KSFO SAN FRANCISCO INTL,CA 12 sm60 minW 12G1710 smOvercast57°F48°F72%29.91
KSQL SAN CARLOS,CA 12 sm2.2 hrsSW 1510 smPartly Cloudy61°F50°F68%29.90
KPAO PALO ALTO,CA 19 sm69 minNNW 1310 smMostly Cloudy59°F50°F72%29.90
KOAK METROPOLITAN OAKLAND INTL,CA 22 sm63 minWNW 1110 smOvercast55°F48°F77%29.92
KHWD HAYWARD EXECUTIVE,CA 23 sm62 minWNW 1310 smOvercast57°F50°F77%29.91
KNUQ MOFFETT FEDERAL AFLD,CA 23 sm21 minNNW 1310 smClear57°F50°F77%29.91

Link to 5 minute data for KHAF

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Wind History from HAF (wind in knots)

Tide / Current Tables for Half Moon Bay, California
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Half Moon Bay
Click for Map
Sun -- 12:41 AM PDT     2.46 feet Low Tide
Sun -- 02:27 AM PDT     Moonset
Sun -- 05:23 AM PDT     3.57 feet High Tide
Sun -- 05:52 AM PDT     Sunrise
Sun -- 12:09 PM PDT     0.80 feet Low Tide
Sun -- 01:56 PM PDT     Moonrise
Sun -- 07:09 PM PDT     4.62 feet High Tide
Sun -- 08:22 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Half Moon Bay, California, Tide feet
12
am
2.5
1
am
2.5
2
am
2.7
3
am
3
4
am
3.3
5
am
3.6
6
am
3.5
7
am
3.2
8
am
2.7
9
am
2.1
10
am
1.5
11
am
1
12
pm
0.8
1
pm
0.9
2
pm
1.4
3
pm
2.1
4
pm
3
5
pm
3.8
6
pm
4.4
7
pm
4.6
8
pm
4.5
9
pm
4.1
10
pm
3.5
11
pm
2.8


Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Sun -- 12:05 AM PDT     -0.74 knots Max Ebb
Sun -- 02:26 AM PDT     Moonset
Sun -- 03:36 AM PDT     0.00 knots Slack
Sun -- 05:51 AM PDT     Sunrise
Sun -- 05:52 AM PDT     0.66 knots Max Flood
Sun -- 08:47 AM PDT     -0.00 knots Slack
Sun -- 12:03 PM PDT     -1.03 knots Max Ebb
Sun -- 01:55 PM PDT     Moonrise
Sun -- 03:30 PM PDT     0.00 knots Slack
Sun -- 06:29 PM PDT     1.24 knots Max Flood
Sun -- 08:21 PM PDT     Sunset
Sun -- 09:56 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

San Mateo Bridge, South San Francisco Bay, California Current, knots
12
am
-0.7
1
am
-0.7
2
am
-0.5
3
am
-0.2
4
am
0.2
5
am
0.6
6
am
0.7
7
am
0.6
8
am
0.3
9
am
-0.1
10
am
-0.5
11
am
-0.9
12
pm
-1
1
pm
-0.9
2
pm
-0.6
3
pm
-0.3
4
pm
0.3
5
pm
0.9
6
pm
1.2
7
pm
1.2
8
pm
1
9
pm
0.6
10
pm
-0
11
pm
-0.5



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GEOS Local Image of Central West Coast    EDIT
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