Castro Valley, CA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Castro Valley, CA

June 21, 2024 9:05 PM PDT (04:05 UTC) Change Location
Sunrise 5:45 AM   Sunset 8:35 PM
Moonrise 7:57 PM   Moonset 4:01 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 831 Pm Pdt Fri Jun 21 2024

Tonight - W wind 5 to 10 kt, becoming nw late. Waves around 2 ft or less. Patchy dense fog late this evening and overnight.

Sat - NW wind around 5 kt, rising to 5 to 10 kt in the afternoon. Waves around 2 ft or less. Patchy fog in the morning.

Sat night - W wind 5 to 10 kt. Waves around 2 ft or less.

Sun - SW wind 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Waves around 2 ft or less.

Sun night - SW wind 5 to 10 kt. Waves around 2 ft or less.

Mon - W wind 5 to 10 kt. Waves around 2 ft or less.

Mon night - SW wind 5 to 10 kt. Waves around 2 ft or less.

Tue - W wind around 5 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less.

Tue night - W wind 5 to 10 kt. Waves around 2 ft or less.

Wed - W wind around 5 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less.

Wed night - W wind 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Waves around 2 ft or less.

PZZ500 831 Pm Pdt Fri Jun 21 2024

Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - . Fresh to moderate northwest winds continue this weekend and into next week with stronger gusts persisting over the northern outer waters. These stronger gusts may pose hazardous for small craft. Significant wave heights of 10-12 feet are expected over the outer waters through the weekend, when northwest winds increase once again over much of the waters. Light southerly swell continues to move through the waters, accompanied by moderate nw swell through the beginning of next week.


7 Day Forecast for Marine Location Near Castro Valley, CA
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Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 220328 AAA AFDMTR

Area Forecast Discussion...UPDATED National Weather Service San Francisco CA 828 PM PDT Fri Jun 21 2024

New UPDATE

SYNOPSIS
Issued at 1253 PM PDT Fri Jun 21 2024

A Heat Advisory comes into effect on Saturday for the interior regions with a moderate risk of heat-related illnesses.
Temperatures moderate through the early part of next week, but remain warm across the interior.

UPDATE
Issued at 807 PM PDT Fri Jun 21 2024

No real changes needed for this evening and the ongoing forecast is in fine shape. Satellite imagery reveals coastal stratus starting to invade inlets and bays this evening as modest onshore flow continues. With boundary layer flow being a bit less perturbed than last night, the areal coverage of fog may be slightly greater tonight compared to last night. That being said, there aren't any real signals from model guidance that widespread dense fog will materialize, except maybe along the coastline. Interior sections will see cooler conditions as mostly clear skies and light winds promote ideal radiational cooling. Some of the microclimates are already on display at this hour and portions of the North Bay, the SF Peninsula, and interior Monterey County may dip down into the upper 40s for overnight lows tonight into Saturday AM.

Otherwise, Saturday will be hot for locales away from the coast with temperatures climbing into the upper 90s to near 105, particularly across interior parts of the North Bay, East Bay, and San Benito/Monterey counties. A Heat Advisory is in effect late Saturday morning into Saturday evening. For more details, see the short term discussion below.

SHORT TERM
(This evening through Saturday)
Issued at 1253 PM PDT Fri Jun 21 2024

Tonight, temperatures will generally cool into the mid 50's for most locations away from the immediate coast with some upper 40's in those locations. However, warm temperatures will persist across the higher elevations where temperatures will only dip into the upper 60's to upper 70's. Stratus will also return to the region this evening, yet will penetrate less inland overnight as high pressure compresses the marine layer.

Temperatures on Saturday will be the warmest of the week with maximum temperatures reaching 105 degrees across the warmest inland areas to mid 90's in the interior valleys. This is where we have a Heat Advisory in effect where HeatRisk reach moderate levels, across the interior and higher elevations in the Santa Lucia Range. Near the coast and areas just inland, mid 70's to mid 80's for the Bayshore, and the 60's and low 70's along the Pacific coast as a shallow marine layer remains in place.

Much of the interior is expected to see Moderate HeatRisk tomorrow, most notably the interior East Bay, South Bay, and southern Salinas Valley. This means that there is a risk of heat-related illnesses for most people sensitive to heat, including children, the elderly, pregnant women, those working or living outside, and those with certain medical conditions. Here are heat safety tips:

* Stay hydrated and drink plenty of fluids.
* Wear lightweight, light-colored clothing.
* Reduce time spent outdoors or stay in the shade.
* Never leave people, the elderly, or pets unattended in vehicles.
* Use sunscreen if going to the coast or the pool.

LONG TERM
(Saturday night through Thursday)
Issued at 1231 AM PDT Fri Jun 21 2024

Sunday should be noticeably cooler with an upper level trough to our west beginning to promote stronger onshore flow. High temperatures will drop into the mid 80s to the low 90s in the interior valleys (perhaps close to 100 in the warmest spots), the 70s into the lower 80s along the Bayshore, and the upper 50s to the 60s along the coast. Expect these temperatures to continue into the next work week. Beyond that, CPC outlooks continue to suggest chances for temperatures above seasonal averages (around 33-50% probability) and precipitation near or below seasonal averages into the first few days of July.

AVIATION
(00Z TAFS)
Issued at 622 PM PDT Fri Jun 21 2024

VFR conditions last through the night for inland terminals, though coastal terminals are likely to see a brief period of low coastal clouds in the mid morning (IFR CIGs ), though confidence is only moderate on this. Monterey Bay on the other hand is high confidence for developing IFR CIGs , and dipping into LIFR territory overnight.
Clearing is expected in the mid to late morning of Saturday for all terminals to VFR. Onshore and breezy winds return Saturday afternoon.

Vicinity of SFO...Currently VFR. VFR conditions last through the majority of the night, though towards the mid morning of Saturday, low clouds will begin to drift into the terminal vicinity. Current thinking is that clouds may briefly and intermittently form IFR CIGs , but confidence on this is only moderate. Winds overnight expected to decrease and become light.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...IFR CIGs last through the majority of the night, though are expected to decrease to become LIFR in the mid morning as higher pressure begins to build over the region. Clouds clear and begin to erode beyond sunrise, leading to widespread VFR conditions. Breezy westerly winds return in the afternoon Saturday.

MARINE
(Tonight through next Thursday)
Issued at 622 PM PDT Fri Jun 21 2024

Fresh northwesterly winds continue into the weekend with strong gusts over the northern outer waters. These stronger gusts may pose hazardous for small craft. Significant wave heights of 10-12 feet are expected over the outer waters through the weekend, when northwest winds increase once again over much of the waters.
Light southerly swell continues to move through the waters today, accompanied by moderate NW swell.

MTR WATCHES/WARNINGS/ADVISORIES
CA...Heat Advisory from 11 AM to 10 PM PDT Saturday for CAZ504-510- 513>518.

PZ...Small Craft Advisory until 9 AM PDT Sunday for Pt Arena to Pt Reyes 10-60 NM.

Small Craft Advisory until 9 PM PDT Saturday for Pigeon Pt to Pt Pinos 10-60 NM.




Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
AAMC1 - 9414750 - Alameda, CA 13 mi48 minWSW 9.9G13 54°F 66°F29.82
LNDC1 13 mi48 minWSW 7G8.9 55°F 29.80
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 15 mi48 minWSW 14G18
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi48 minW 8G12 55°F 29.80
RTYC1 - 9414523 - Redwood City, CA 16 mi48 minNW 9.9G11 60°F 70°F29.79
PXOC1 - 9414311 - San Francisco (Pier 1), CA 18 mi48 minW 4.1G8.9 53°F 29.78
PXSC1 18 mi48 min 53°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 21 mi48 minS 19G23 53°F 29.80
FTPC1 - 9414290 - San Francisco, CA 22 mi48 minWSW 4.1G11 51°F 29.80
MZXC1 - 9415102 - Martinez-Amorco CA 23 mi48 minW 11G13 71°F 67°F29.75
RCMC1 - 9414863 - Richmond, CA 23 mi48 minSSE 9.9G14 29.78
UPBC1 23 mi48 minW 11G13
PCOC1 - 9415144 - Port Chicago, CA 24 mi48 minW 13G16 71°F 29.73
TIBC1 - Tiburon Pier, San Francisco Bay, CA 24 mi112 minSSE 6 56°F 29.7751°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 25 mi48 minNW 15G18 73°F 29.71
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 26 mi48 minSW 12G14 60°F 29.75
46237 - San Francisco Bar, CA (142) 30 mi36 min 50°F 52°F4 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi56 min 50°F6 ft


Wind History for Alameda, CA
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Airport Reports
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Link to 1 hour of 5 minute data for KHWD
   
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Wind History graph: HWD
(wind in knots)
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Tide / Current for Roberts Landing, 1.3 miles west of, San Francisco Bay, California
   
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Roberts Landing
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Fri -- 05:01 AM PDT     Moonset
Fri -- 05:47 AM PDT     Sunrise
Fri -- 07:25 AM PDT     -1.04 feet Low Tide
Fri -- 02:23 PM PDT     5.77 feet High Tide
Fri -- 06:10 PM PDT     Full Moon
Fri -- 06:50 PM PDT     3.36 feet Low Tide
Fri -- 08:33 PM PDT     Sunset
Fri -- 08:56 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Roberts Landing, 1.3 miles west of, San Francisco Bay, California, Tide feet
12
am
7.6
1
am
7.1
2
am
6
3
am
4.4
4
am
2.5
5
am
0.8
6
am
-0.4
7
am
-1
8
am
-0.9
9
am
-0.1
10
am
1.1
11
am
2.6
12
pm
4
1
pm
5.1
2
pm
5.7
3
pm
5.7
4
pm
5
5
pm
4.2
6
pm
3.6
7
pm
3.4
8
pm
3.8
9
pm
4.7
10
pm
5.9
11
pm
7


Tide / Current for Oakland Airport SW, South San Francisco Bay, California Current
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Oakland Airport SW
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Fri -- 03:07 AM PDT     -1.01 knots Max Ebb
Fri -- 05:02 AM PDT     Moonset
Fri -- 05:47 AM PDT     Sunrise
Fri -- 06:57 AM PDT     0.01 knots Slack
Fri -- 10:19 AM PDT     0.76 knots Max Flood
Fri -- 01:51 PM PDT     -0.01 knots Slack
Fri -- 03:45 PM PDT     -0.38 knots Max Ebb
Fri -- 06:10 PM PDT     Full Moon
Fri -- 06:29 PM PDT     0.00 knots Slack
Fri -- 08:33 PM PDT     Sunset
Fri -- 08:57 PM PDT     Moonrise
Fri -- 09:41 PM PDT     0.49 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Oakland Airport SW, South San Francisco Bay, California Current, knots
12
am
-0.1
1
am
-0.5
2
am
-0.8
3
am
-1
4
am
-0.9
5
am
-0.7
6
am
-0.4
7
am
0
8
am
0.4
9
am
0.6
10
am
0.7
11
am
0.7
12
pm
0.6
1
pm
0.3
2
pm
-0.1
3
pm
-0.3
4
pm
-0.4
5
pm
-0.3
6
pm
-0.1
7
pm
0.1
8
pm
0.3
9
pm
0.5
10
pm
0.5
11
pm
0.4


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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