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Marine Weather and Tide Forecast for Los Altos Hills, CA

April 20, 2025 6:39 PM PDT (01:39 UTC) Change Location
Sunrise 6:24 AM   Sunset 7:49 PM
Moonrise 1:24 AM   Moonset 10:50 AM 
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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.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025
PZZ560 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 204 Pm Pdt Sun Apr 20 2025

This afternoon - NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: nw 5 ft at 11 seconds.

Tonight - NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: nw 6 ft at 10 seconds. Patchy dense fog after midnight.

Mon - N wind around 5 kt, backing to nw in the afternoon. Seas 5 to 7 ft. Wave detail: nw 6 ft at 11 seconds. Patchy dense fog in the morning.

Mon night - NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave detail: nw 6 ft at 10 seconds.

Tue - NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: nw 6 ft at 10 seconds and sw 2 ft at 17 seconds.

Tue night - NW wind 10 to 15 kt. Seas 6 to 8 ft. Wave detail: nw 2 ft at 4 seconds, nw 7 ft at 10 seconds and sw 2 ft at 18 seconds.

Wed - NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave detail: nw 2 ft at 4 seconds, nw 7 ft at 10 seconds and sw 2 ft at 18 seconds.

Wed night - NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave detail: nw 2 ft at 5 seconds and nw 6 ft at 10 seconds.

Thu - NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave detail: nw 6 ft at 9 seconds.

Thu night - NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave detail: nw 5 ft at 9 seconds.
PZZ500 204 Pm Pdt Sun Apr 20 2025

Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
breezy to gusty north/northwest winds are building in the northern waters along with building north swell. Winds look to increase and spread across the outer waters into the work week. The gusty occasionally gale force northerly winds in the afternoon look to become more widespread into the mid week.

7 Day Forecast for Marine Location Near Los Altos Hills, CA
   
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Tide / Current for Palo Alto Yacht Harbor, California
  
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Palo Alto Yacht Harbor
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Sun -- 02:07 AM PDT     3.82 feet Low Tide
Sun -- 02:23 AM PDT     Moonrise
Sun -- 06:26 AM PDT     Sunrise
Sun -- 06:40 AM PDT     7.41 feet High Tide
Sun -- 11:49 AM PDT     Moonset
Sun -- 02:21 PM PDT     0.27 feet Low Tide
Sun -- 06:37 PM PDT     Last Quarter
Sun -- 07:48 PM PDT     Sunset
Sun -- 08:15 PM PDT     6.25 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Palo Alto Yacht Harbor, California does not exist in database. Press Edit above and select a valid nearby location.

Palo Alto Yacht Harbor, California, Tide feet
12
am
4.6
1
am
4.1
2
am
3.8
3
am
4.1
4
am
5
5
am
6.2
6
am
7.2
7
am
7.4
8
am
6.6
9
am
5.3
10
am
3.9
11
am
2.6
12
pm
1.6
1
pm
0.8
2
pm
0.3
3
pm
0.4
4
pm
1.3
5
pm
2.9
6
pm
4.5
7
pm
5.7
8
pm
6.2
9
pm
6.1
10
pm
5.7
11
pm
5.3

Tide / Current for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
  
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Dumbarton Point 2.3 mi NE
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Sun -- 01:07 AM PDT     0.00 knots Slack
Sun -- 02:23 AM PDT     Moonrise
Sun -- 03:41 AM PDT     0.43 knots Max Flood
Sun -- 06:02 AM PDT     -0.00 knots Slack
Sun -- 06:26 AM PDT     Sunrise
Sun -- 11:25 AM PDT     -1.00 knots Max Ebb
Sun -- 11:49 AM PDT     Moonset
Sun -- 02:26 PM PDT     0.00 knots Slack
Sun -- 05:21 PM PDT     0.98 knots Max Flood
Sun -- 06:37 PM PDT     Last Quarter
Sun -- 07:48 PM PDT     Sunset
Sun -- 08:58 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current does not exist in database. Press Edit above and select a valid nearby location.

Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current, knots
12
am
-0.2
1
am
-0
2
am
0.2
3
am
0.4
4
am
0.4
5
am
0.3
6
am
0
7
am
-0.2
8
am
-0.4
9
am
-0.6
10
am
-0.9
11
am
-1
12
pm
-0.9
1
pm
-0.6
2
pm
-0.2
3
pm
0.3
4
pm
0.8
5
pm
1
6
pm
1
7
pm
0.8
8
pm
0.4
9
pm
-0
10
pm
-0.2
11
pm
-0.3

Area Discussion for San Francisco/Monterey Bay Area, CA
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NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 202130 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area Issued by National Weather Service Eureka CA 230 PM PDT Sun Apr 20 2025

New AVIATION

SYNOPSIS
Issued at 1251 AM PDT Sun Apr 20 2025

A slight warming trend will continue through Monday before cool and cloudy weather returns mid to late week.

UPDATE
Issued at 927 AM PDT Sun Apr 20 2025

Clear conditions expected to persist this afternoon. Highs are forecast to reach the low to mid 70s across the interior and upper 50s to mid 60s along the coast. No changes to the forecast at this time.

SHORT TERM
(Today and tonight and Monday )
Issued at 228 PM PDT Sun Apr 20 2025

The stratus blanketing the Bay Area and Central Coast has receded much faster today than it has over the past few days. For example, stratus did recede from Santa Rosa until after 3PM yesterday but cleared completely by 1PM today. The 24 hour temperature change shows temperatures are running on average 5 to 10 degrees warmer today than they were at this time yesterday as a result of the much more rapid clearing of stratus today. A few sites across areas of elevated terrain are even running up to 15 degrees warmer today than they were yesterday! That being said, we did nudge high temperatures across the North Bay Valleys down by a few degrees (changing the forecast high from the low 70s to the upper 60s) in order to account for stratus lingering longer across the NB Valleys than it did across the rest of the region. In general, temperatures will be fairly seasonal today with highs in the upper 60s to mid 70s across the interior. Cooler coastal temperatures prevail with highs in the upper 50s to low 60s.
Temperatures are expected to rise further on Monday as zonal flow develops with high temperatures in the mid 70s to low 80s across the interior and low to mid 60s along the coast. Building high pressure and zonal upper level flow will help to compress the marine layer to around 500 to 1000 ft overnight tonight. This should serve to limit inland stratus intrusion overnight and keep stratus confined more closely to the shoreline/coastal areas.

LONG TERM
(Monday night through Saturday)
Issued at 228 PM PDT Sun Apr 20 2025

Zonal flow persists through Tuesday with temperatures remaining seasonal to slightly above normal in the mid to upper 70s for interior locations and low to mid 60s along the coast. Heading into Wednesday, a weak shortwave trough will move in and kick start a cooling trend across the region. This will allow temperatures to cool into the upper 60s to low 70s across the interior and mid 50s to low 60s along the coast. This system is not expected to produce any precipitation with it but may result in some locally breezy winds. Current NBM and local high resolution WRF guidance keep the highest gusts out over the marine environment but gusts between 20 to 30 mph are possible across the higher terrain. The cooling trend continues Thursday into the weekend with high temperatures dropping into the low to mid 60s across the interior and mid 50s to low 60s along the coast.
Heading into Friday, a deeper upper level trough will move into the West Coast and bring a low chance for light rain to northernmost portions of the Sonoma and Napa Counties. At most, this system looks to bring a few hundredths to a tenth of an inch to northern Sonoma and Napa Counties with some coastal drizzle possible further south. Confidence remains low overall that the North Bay will experience any rainfall from this system due to guidance continuing to trending rain chances lower and lower across our CWA and shifting the rain further north. This system does look as though it will produce breezier conditions across the region with guidance showing widespread gusts to around 25 to 30 mph and locally stronger gusts across the elevated terrain.

AVIATION
(18Z TAFS)
Issued at 1158 AM PDT Sun Apr 20 2025

Stratus continues to clear this morning, with coastal communities and the North Bay Valleys taking the longest to dissipate. Expect VFR conditions at most sites within a few hours and then persisting into the early evening. Guidance shows another intrusion of the marine layer tonight, which will likely impact the coastal KSFO, KOAK, KHAF, KMRY, and KSNS with MVFR to IFR cigs possible. North Bay sites show a mix of stratus and mixed visibilities, though confidence is a touch lower on how low the vis could fall. Trended towards IFR cig and vis for these sites. Expect another round of clearing by mid to late tomorrow morning with any development.

Vicinity of SFO... Stratus has more or less cleared this morning, with only a few clouds hanging around. Expect VFR conditions to prevail through the evening, with uptick breezy west to west- northwesterly winds of 10-15kt possible. Winds should fall below 10kt before 06Z, with MVFR cigs returning during the early overnight hours. Leaned towards the persistence forecast, which should have MVFR cigs eroding just before or around 18Z.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Clear skies around much of the Monterey Bay region this morning, with VFR conditions likely prevailing through the early evening. Then MVFR to IFR cigs are expected overnight with skies clearing by mid to late morning tomorrow.

MARINE
(Today through Friday)
Issued at 927 AM PDT Sun Apr 20 2025

Breezy to gusty north/northwest winds are building in the northern waters along with building north swell. Winds look to increase and spread across the outer waters into the work week. The occionally near gale gusty northerly winds look to become more widespread into the mid week.

MTR WATCHES/WARNINGS/ADVISORIES

Tngt
SCA...Pt Arena to Pt Reyes 0-10 nm until 3 AM SCA...Pt Arena to Pigeon Pt 10-60 nm SCA...Pigeon Pt to Pt Piedras Blancas 10-60 nm


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
RTYC1 - 9414523 - Redwood City, CA 11 mi51 minNNW 12G14 66°F30.01
AAMC1 - 9414750 - Alameda, CA 30 mi51 minW 9.9G12 64°F30.04
LNDC1 31 mi51 minW 5.1G8 30.04
46284 32 mi69 min 54°F 56°F2 ft
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 32 mi51 minW 9.9G12
OBXC1 33 mi69 min 56°F 51°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 33 mi51 minWNW 8G12 30.04
PXOC1 - 9414311 - San Francisco (Pier 1), CA 33 mi51 minSW 6G11 30.01
PXSC1 33 mi69 min 56°F 51°F
FTPC1 - 9414290 - San Francisco, CA 35 mi51 minSW 11G20 30.04
46237 - San Francisco Bar, CA (142) 39 mi69 min 52°F 58°F4 ft
46276 40 mi69 min 55°F 55°F3 ft
46279 40 mi43 min 54°F 56°F2 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi51 minSSW 9.9G15 30.04
TIBC1 - Tiburon Pier, San Francisco Bay, CA 40 mi115 minS 4.1 57°F 30.0248°F
RCMC1 - 9414863 - Richmond, CA 41 mi51 minS 7G11 60°F30.02
46092 - MBM1 42 mi101 min0 53°F 57°F30.06
46236 - Monterey Canyon Outer, CA (156) 43 mi43 min 56°F5 ft
MLSC1 - Moss Landing, South Harbor, CA 43 mi32 minW 8.9 54°F 30.0649°F
ELXC1 - Elkhorn Slough Reserve, CA 44 mi114 minW 7 30.04
MZXC1 - 9415102 - Martinez-Amorco CA 47 mi51 minW 9.9G12 62°F30.00
UPBC1 48 mi51 minWNW 13G15
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 49 mi51 minWSW 8G9.9 30.00
PCOC1 - 9415144 - Port Chicago, CA 49 mi51 minW 12G14 29.99


Wind History for Redwood City, CA
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Airport Reports
   
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Weather Map
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GEOS Local Image of Central West Coast  
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San Francisco Bay Area, CA,





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