Sunnyvale, CA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Sunnyvale, CA

April 14, 2024 12:48 AM PDT (07:48 UTC) Change Location
Sunrise 6:31 AM   Sunset 7:43 PM
Moonrise 9:58 AM   Moonset 12:50 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.

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Marine Forecasts
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PZZ531 San Francisco Bay South Of The Bay Bridge- 916 Pm Pdt Sat Apr 13 2024

.small craft advisory in effect until 3 am pdt Sunday - .

Tonight - E winds 10 to 20 knots with gusts up to 25 knots. A slight chance of Thunderstorms this evening. Showers likely.

Sun - N winds 15 to 20 knots with gusts up to 25 knots. A slight chance of showers.

Sun night - NW winds 15 to 20 knots with gusts up to 25 knots.

Mon - W winds 5 to 10 knots.

Mon night - W winds 10 to 15 knots.

Tue - W winds 5 to 10 knots.

Tue night - W winds 5 to 10 knots.

Wed - NW winds 5 to 10 knots.

Thu - W winds 5 to 10 knots.
winds and waves higher in and near tstms.

PZZ500 916 Pm Pdt Sat Apr 13 2024

Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
showers and isolated Thunderstorms will impact the waters tonight before diminishing in coverage on Sunday. Moderate period northwesterly swell will continue to build through the waters through tonight beginning its abating trend Sunday.


7 Day Forecast for Marine Location Near Sunnyvale, CA
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Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 140549 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 1049 PM PDT Sat Apr 13 2024

New AVIATION, MARINE

SYNOPSIS
Issued at 102 PM PDT Sat Apr 13 2024

Rain showers and isolated thunderstorms will continue through the overnight hours while shifting southward. Storm chances decrease overnight, but showers linger into Sunday afternoon before dry weather returns. A warming trend is then expected throughout the upcoming week.

UPDATE
Issued at 847 PM PDT Sat Apr 13 2024

Pretty interesting weather day around the Bay Area and Central.
Ample cloud cover, colder airmass/fropa, and precipitation led to a rather chilly day. Temperatures maxed out in the 40s to mid 50s with the highest peaks staying in the 30s. That's about 15 to 35 degrees below seasonal average mid-April. In addition to the chilly temperatures winds remained breezy to gusty at times out of the south. The stronger winds gave an extra bite to the temperatures and made it feel a little more raw. Currently some of the hills around the region are sporting wind chilling values in the mid 20s to low 30s.

As for precip, a solid band of precip rolled through earlier today with the fropa. In its wake precip has turned more showery/convective
More on this a little later
Rainfall amounts over the last 24 hours are pretty decent with pre-frontal precip yesterday evening/last night and the fropa today. Rainfall amounts: 0.75-1.5" coastal mts with Anderson Peak above Big Sur the winner at 2.33". Elsewhere, generally 0.20-0.75". As stated above, the passing system brought in colder air. Snow levels dropped last night and remained lowered for most of the day. As a result, some of the higher peaks saw minor accumulations per webcams.

Convective activity over the coastal waters...While there are still thunderstorms in the official forecast there hasn't been any lightning observed. A few stronger cells came close earlier in the evening, but not enough vertical development/ice in the column for lightning production. CAPE (100-200 J/km) still remains decent offshore, but meso-analysis shows a sliver of CINH along the immediate coast. SST temps around 11C and observed 850mb temps around 0C-1C may not be enough differential to give the stronger cells the boost they need. In fact, latest KMUX radar is showing a more stratiform look with precip interacting with the melting layer. All that being said, won't take thunder out of the forecast just yet, but we'll be watching it closely as stronger showers move onshore through early tonight.

SHORT TERM
(This evening through Sunday)
Issued at 102 PM PDT Sat Apr 13 2024

By this afternoon and evening we will transition to post frontal rain showers and isolated thunderstorms as the atmosphere aloft becomes more unstable. CAPE values are forecast to be between 200- 300 J/kg with little to no CIN. Any heavier showers and/or thunderstorms will be capable of producing brief heavy rainfall, gusty winds, copious amounts of small hail, occasional lightning, and rapid onset of flooding. Thunderstorm potential will shift southward tonight and diminish Sunday morning.

Lingering showers will be possible over the Central Coast through Sunday afternoon with conditions clearing out by the late evening.
Temperatures will struggle to warm into the upper 50s near the coast to low/mid 60s inland on Sunday (40s in the highest peaks).

LONG TERM
(Sunday night through next Friday)
Issued at 102 PM PDT Sat Apr 13 2024

High pressure will begin to build in wake of the exiting weather system and will allow for a warming and drying trend to resume. By Wednesday and Thursday, expecting the interior to warm into the upper 70s to lower 80s with upper 60s to mid 70s near the coast.
Friday and beyond, zonal flow sets up across the region allowing for a few degrees of cooling across the interior and more so at the coast with a likely return of a marine layer.

AVIATION
(06Z TAFS)
Issued at 1049 PM PDT Sat Apr 13 2024

VFR through the period with some MVFR-IFR conditions possible as heavier bands of rain move through the region. Widespread light rain continues to enter the Bay Area. Thunderstorm chances decrease overnight with the highest areas of potential remaining offshore. SE winds will gradually turn SW moving through the TAF period with gustier conditions to continue through the early morning.

Vicinity of SFO...VFR through the TAF period with some potential for MVFR to develop if heavier showers move over the airport. Showers will linger through tomorrow afternoon. Moderate SE winds will gradually transition westerly moving through the TAF period.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR through the TAF period with MVFR possible if heavier showers move directly over the airport. Showers will continue through the early morning hours with drier conditions to follow. Moderate SE winds continue through the early morning with light to moderate westerly winds expected through the rest of the TAF period.

MARINE
(Tonight through next Friday)
Issued at 1049 PM PDT Sat Apr 13 2024

Showers and isolated thunderstorms will impact the waters tonight before diminishing in coverage on Sunday. Moderate period northwesterly swell will continue to build through the waters through tonight beginning its abating trend Sunday.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 3 AM PDT Sunday for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm-SF Bay N of Bay Bridge.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
RTYC1 - 9414523 - Redwood City, CA 14 mi49 min ESE 8.9G13 49°F 61°F29.93
AAMC1 - 9414750 - Alameda, CA 30 mi49 min E 6G8 48°F 58°F29.95
LNDC1 30 mi49 min ESE 4.1G7 51°F 29.94
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 32 mi49 min E 5.1G8
OKXC1 - 9414776 - Oakland (Berth 34), CA 33 mi49 min ESE 4.1G5.1 49°F 29.94
PXOC1 - 9414311 - San Francisco (Pier 1), CA 34 mi49 min ENE 9.9G14 50°F 29.90
PXSC1 34 mi49 min 51°F
FTPC1 - 9414290 - San Francisco, CA 37 mi49 min ENE 8G11 50°F 29.94
PPXC1 - 9414847 - Richmond (Point Potrero), CA 39 mi55 min NNW 8.9G9.9 47°F 29.96
46279 41 mi53 min 47°F 55°F5 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 41 mi125 min E 6 50°F 29.9242°F
RCMC1 - 9414863 - Richmond, CA 42 mi49 min NNE 9.9G12 48°F 56°F29.95
46237 - San Francisco Bar, CA (142) 43 mi49 min 51°F 54°F7 ft
MZXC1 - 9415102 - Martinez-Amorco CA 43 mi49 min ENE 5.1G8 46°F 59°F29.98
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 43 mi49 min ESE 15G19 47°F 29.98
UPBC1 43 mi49 min E 14G17
ELXC1 - Elkhorn Slough Reserve, CA 44 mi64 min SE 7 48°F 29.9245°F
MLSC1 - Moss Landing, South Harbor, CA 44 mi79 min 54°F
PCOC1 - 9415144 - Port Chicago, CA 44 mi49 min E 17G21 47°F 29.96
46092 - MBM1 46 mi97 min E 23 50°F 53°F29.93
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 46 mi49 min ENE 16G19 47°F 29.96
CQUC1 47 mi78 min 57°F


Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KNUQ MOFFETT FEDERAL AFLD,CA 4 sm13 minSE 115 smOvercast Lt Rain Haze 48°F43°F81%29.94
KSJC NORMAN Y MINETA SAN JOSE INTL,CA 5 sm55 minSE 1110 smOvercast50°F39°F66%29.94
KRHV REIDHILLVIEW OF SANTA CLARA COUNTY,CA 11 sm2.9 hrsSE 0710 smPartly Cloudy48°F37°F66%29.95
KSQL SAN CARLOS,CA 16 sm13 minSE 09G1510 smOvercast48°F43°F81%29.94
KHWD HAYWARD EXECUTIVE,CA 18 sm54 minNE 0510 smOvercast Lt Rain 50°F41°F71%29.93
KLVK LIVERMORE MUNI,CA 20 sm55 minE 0810 smMostly Cloudy46°F39°F76%29.93
KOAK METROPOLITAN OAKLAND INTL,CA 24 sm55 minE 0610 smPartly Cloudy46°F43°F87%29.94
Link to 5 minute data for KSJC


Wind History from SJC
(wind in knots)
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Tide / Current for Gold Street Bridge, Alviso Slough, San Francisco Bay, California
   
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Gold Street Bridge
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Sun -- 12:27 AM PDT     3.35 feet Low Tide
Sun -- 01:50 AM PDT     Moonset
Sun -- 04:57 AM PDT     8.98 feet High Tide
Sun -- 06:33 AM PDT     Sunrise
Sun -- 10:57 AM PDT     Moonrise
Sun -- 01:36 PM PDT     -0.30 feet Low Tide
Sun -- 07:42 PM PDT     Sunset
Sun -- 08:14 PM PDT     7.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Gold Street Bridge, Alviso Slough, San Francisco Bay, California, Tide feet
12
am
3.4
1
am
3.5
2
am
4.7
3
am
6.5
4
am
8.3
5
am
9
6
am
8.7
7
am
7.8
8
am
6.5
9
am
4.8
10
am
3
11
am
1.5
12
pm
0.4
1
pm
-0.2
2
pm
-0.2
3
pm
0.5
4
pm
1.9
5
pm
3.6
6
pm
5.2
7
pm
6.5
8
pm
7.1
9
pm
7
10
pm
6.3
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 -- 12:14 AM PDT     0.00 knots Slack
Sun -- 01:50 AM PDT     Moonset
Sun -- 02:37 AM PDT     0.61 knots Max Flood
Sun -- 05:17 AM PDT     -0.00 knots Slack
Sun -- 06:33 AM PDT     Sunrise
Sun -- 10:18 AM PDT     -1.12 knots Max Ebb
Sun -- 10:58 AM PDT     Moonrise
Sun -- 01:29 PM PDT     0.00 knots Slack
Sun -- 04:34 PM PDT     1.10 knots Max Flood
Sun -- 07:43 PM PDT     Sunset
Sun -- 07:59 PM PDT     -0.00 knots Slack
Sun -- 11:26 PM PDT     -0.31 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current, knots
12
am
-0.1
1
am
0.3
2
am
0.5
3
am
0.6
4
am
0.4
5
am
0.1
6
am
-0.2
7
am
-0.5
8
am
-0.8
9
am
-1
10
am
-1.1
11
am
-1
12
pm
-0.7
1
pm
-0.3
2
pm
0.3
3
pm
0.8
4
pm
1.1
5
pm
1.1
6
pm
0.9
7
pm
0.5
8
pm
-0
9
pm
-0.2
10
pm
-0.3
11
pm
-0.3




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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