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Sample Forecast for Sausalito, CA

July 21, 2024 2:12 AM PDT (09:12 UTC) Change Location
Sunrise 6:03 AM   Sunset 8:28 PM
Moonrise 8:16 PM   Moonset 5:03 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 754 Pm Pdt Sat Jul 20 2024

.small craft advisory in effect until 9 pm pdt this evening - .

Tonight - SW wind 10 to 15 kt, rising to 15 to 20 kt late. Waves around 2 ft or less.

Sun - SW wind 10 to 15 kt. Waves around 2 ft or less.

Sun night - SW wind 10 to 15 kt. Waves around 2 ft or less.

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

Mon night - SW wind 10 to 15 kt. Waves around 2 ft or less.

Tue - SW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Waves around 2 ft or less.

Tue night - SW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less.

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

Wed night - SW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less.

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

Thu night - SW wind 10 to 15 kt. Waves around 2 ft or less.

PZZ500 754 Pm Pdt Sat Jul 20 2024

Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
fresh to strong northwest winds continue with gale force gusts continue over the majority of the coastal waters. Winds continue to strengthen and spread over the waters through the end of the weekend before gale force winds weaken for all areas, excluding the northern outer waters, by the early work week. Gale force winds continue over the northern outer waters through mid week before weakening to a fresh to strong breeze. Short period seas will build to 10 to 13 feet with conditions expected to deteriorate and become very rough by Sunday. Elevated wave heights over the outer waters will persist through midweek.


7 Day Forecast for Marine Location Near Sausalito, CA
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Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 210612 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 1112 PM PDT Sat Jul 20 2024

New AVIATION, MARINE

SYNOPSIS
Issued at 210 AM PDT Sat Jul 20 2024

A bit cooler this weekend as a weak system moves through. Warm up still slated for early next week with moderate to major HeatRisk.
Potential for a more substantial cool down towards the end of next week.

SHORT TERM
Issued at 230 PM PDT Sat Jul 20 2024 (This evening through Sunday)

Afternoon satellite imagery shows clouds over the coastal waters.
As noted on the morning update, clouds are struggling to clear for the southern half of Monterey Bay - aka No Sky July.

The bigger weather story for the nearterm and for the rest of the weekend will be the relative cooldown. Latest 24 hour trends shows many locations running 5 to 15 degrees. Max temps this afternoon will top out in near 60 to lower 70s coast/bays and 80s to upper 90s inland. Even with the overall cooldown this afternoon a few pockets of 100 plus will be possible far interior N Bay and S Monterey/San Benito. The reason for the cooldown? Two fold: stout onshore flow and a passing upper level shortwave trough over NorCal. The current SFO-SAC gradient is near 4mb and some short term guidance even has it exceeding 5mb later this afternoon. The stronger onshore flow will also result in some gusty winds this afternoon/evening, especially gap/passes (like Pacheco and Altamont). Finally, the passing shortwave will lower 500mb heights and lower 850mb temps briefly. An additional cooling of 5-10 degrees will possible on Sunday with another cloudy start to the day with marine stratus.

LONG TERM
Issued at 300 PM PDT Sat Jul 20 2024 (Sunday night through next Friday)

Weather impacts for the long term will be focused on a multi-day heat event and a non-zero chance for thunderstorms.

The passing shortwave trough will ride northward Sunday/Monday to the PacNW and BC. Behind it, the high pressure currently over S NV and the Desert SW will build westward. The building high will bring rising 500mb heights and much warmer 850mb temperatures.
850mb anomalies of 4-8 or values in the upper 20C range. Upper 20C range would definitely rival the daily max for OAK upper air sounding site. Despite the building ridge the marine layer will remain, at least some form of it, next week. Therefore, coastal areas will once again be spared from the big heat. Monday will be the ramp up day temperature wise with Tuesday/Wednesday being peak heat and moderating Thursday. Temperature spread will be wide from the coast to far inland, typical in these scenarios with no offshore flow component. Temperatures will generally be in the mid 60s to near 80s coast, 80s to lower 90s bays, and 90s to low 100s interior. Highest potential over far inland areas could reach up to 110. Overnight lows will be mild for lower elevations, but warm in the hills with some spots staying in the 70s. Therefore, given the multi-day scenario with hot daytime temps and mild nights have issued a mix of Heat Advisories and Excessive Heat Warnings.
Interior N Bay, S Bay, Santa Cruz Mts, and S Salinas Valley are in a Heat Advisory Monday through Wednesday, which aligns with moderate to pockets of major HeatRisk. Interior E Bay, Interior San Benitio, S Interior Monterey are in an Excessive Heat Warning, which aligns with major to pockets of extreme HeatRisk. May need to extend heat products through Thursday, but confidence is lower at this time. Cooler weather arrives late next week and next weekend.

Now for the non-zero threat of thunderstorms. Not only is there high pressure building westward from the Desert SW there is also an upper low spinning off the CA coast early next week. The upper level steering flow will help to advect some lingering Monsoon moisture over the region Tuesday into Wednesday. Longer range guidance does show marginal upper level instability, which overlaps the 700-500mb moisture. If this scenario pans out some high-based convection will be possible. Not all guidance is sold on this scenario right now, but something we'll be watching closely over the coming days.

AVIATION
(06Z TAFS)
Issued at 1112 PM PDT Sat Jul 20 2024

The marine layer depth varies from 1,000 feet to 1,300 feet per recent profiler data and surface observations. Coastal stratus and fog /LIFR-IFR-MVFR/ will continue to develop and gradually move inland on onshore breezes overnight, far inland it'll remain VFR.
Improving conditions to MVFR-VFR will occur back to the coastline by late Sunday morning.

Vicinity of SFO...MVFR ceiling overnight and Sunday morning, improving to VFR by 19z. West wind prevailing during the period, becoming gusty to near 30 knots Sunday afternoon and evening.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...LIFR-IFR tonight and Sunday morning, improving to MVFR-VFR by late Sunday morning. Winds mainly onshore 5 to 15 knots.

MARINE
(Tonight through next Friday)
Issued at 1029 PM PDT Sat Jul 20 2024

Fresh to strong northwest winds continue with gale force gusts continue over the majority of the coastal waters. Winds continue to strengthen and spread over the waters through the end of the weekend before gale force winds weaken for all areas, excluding the northern outer waters, by the early work week. Gale force winds continue over the northern outer waters through mid week before weakening to a fresh to strong breeze. Short period seas will build to 10 to 13 feet with conditions expected to deteriorate and become very rough by Sunday. Elevated wave heights over the outer waters will persist through midweek.

FIRE WEATHER
Issued at 900 AM PDT Sat Jul 20 2024

...Near critical fire weather conditions continue through Saturday due to hot and dry conditions inland...

Just finished conference calls with fire agencies and partners.
Biggest near term concerns will be near critical fire weather conditions today, especially later this afternoon/early this evening. While a marine layer developed overnight, it is rather shallow and dry conditions persist above it (1,000 feet).

While today will be a few degrees cooler, far interior locations will remain hot and dry. In addition, onshore flow persists and recent guidance suggests rather strong onshore flow for about 3 to 6 hours late this afternoon. This will allow for a period of time with stronger bursts of wind (30-40 mph) with low RH. Any fire starts will likely spread quickly. Areas of greatest concern will be the gaps/passes of the East Bay with very flashy fuels.

Further cooling is expected on Sunday and thankfully weaker winds.

Looking farther down the road, hot and dry conditions rebuild early next week. Will also be keeping a close eye on some upper level moisture, which at the moment has a non-zero for high-based thunderstorms.

MM

MTR WATCHES/WARNINGS/ADVISORIES
CA...Coastal Flood Advisory until 2 AM PDT Tuesday for CAZ006-506-508.

Heat Advisory from 11 AM Monday to 11 PM PDT Wednesday for CAZ503-504-506-512-513-516.

Excessive Heat Warning from 11 AM Monday to 11 PM PDT Wednesday for CAZ510-514-515-517-518.

PZ...Gale Warning until 3 AM PDT Sunday for Pigeon Pt to Pt Pinos 10- 60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory until 9 PM PDT Sunday for Pigeon Pt to Pt Pinos 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.

Gale Warning until 9 AM PDT Monday for Pt Arena to Pt Reyes 10- 60 NM.




Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
FTPC1 - 9414290 - San Francisco, CA 1 mi54 minSW 16G27 54°F 29.95
PXOC1 - 9414311 - San Francisco (Pier 1), CA 4 mi54 minW 2.9G7 55°F 29.93
PXSC1 4 mi54 min 56°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 5 mi118 min0 58°F 29.9253°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 7 mi54 minSW 8G12 56°F 29.97
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 7 mi54 minSW 12G19
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi54 minS 19G24 56°F 29.97
RCMC1 - 9414863 - Richmond, CA 8 mi54 minSE 8G13 58°F 64°F29.93
46237 - San Francisco Bar, CA (142) 9 mi72 min 54°F 56°F6 ft
AAMC1 - 9414750 - Alameda, CA 9 mi54 minSW 4.1G8 57°F 70°F29.98
LNDC1 10 mi54 minSE 1.9G4.1 57°F 29.97
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi54 minSW 11G14 63°F 29.90
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 21 mi62 min 54°F8 ft
CQUC1 21 mi56 min 67°F
MZXC1 - 9415102 - Martinez-Amorco CA 23 mi54 minW 8.9G15 68°F 70°F29.91
UPBC1 23 mi54 minW 8.9G14
RTYC1 - 9414523 - Redwood City, CA 25 mi54 minWNW 1.9G6 62°F 75°F29.98
PCOC1 - 9415144 - Port Chicago, CA 28 mi54 minS 8.9G16 61°F 29.88
PRYC1 - 9415020 - Point Reyes, CA 30 mi54 min 29.96
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 34 mi54 minWNW 12G17 73°F 29.86
SFXC1 - San Francisco Bay Reserve, CA 35 mi87 minWSW 8.9 63°F 29.8654°F
1801583 41 mi102 minNW 21G24 57°F 55°F9 ft30.0155°F


Wind History for San Francisco, CA
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Airport Reports
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Tide / Current for San Francisco, California
   
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San Francisco
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Sun -- 03:19 AM PDT     Full Moon
Sun -- 06:03 AM PDT     Moonset
Sun -- 06:04 AM PDT     Sunrise
Sun -- 06:18 AM PDT     -1.28 feet Low Tide
Sun -- 01:39 PM PDT     4.83 feet High Tide
Sun -- 05:55 PM PDT     3.03 feet Low Tide
Sun -- 08:27 PM PDT     Sunset
Sun -- 09:16 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

San Francisco, California, Tide feet
12
am
6.6
1
am
5.7
2
am
4.2
3
am
2.4
4
am
0.6
5
am
-0.7
6
am
-1.3
7
am
-1.1
8
am
-0.5
9
am
0.6
10
am
1.8
11
am
3
12
pm
4.1
1
pm
4.7
2
pm
4.8
3
pm
4.4
4
pm
3.8
5
pm
3.2
6
pm
3
7
pm
3.3
8
pm
3.9
9
pm
4.8
10
pm
5.7
11
pm
6.4


Tide / Current for Golden Gate Bridge .8 mi E ., San Francisco Bay, California Current
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Golden Gate Bridge .8 mi E .
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Sun -- 01:07 AM PDT     -0.00 knots Slack
Sun -- 03:19 AM PDT     Full Moon
Sun -- 04:54 AM PDT     -3.84 knots Max Ebb
Sun -- 06:03 AM PDT     Moonset
Sun -- 06:04 AM PDT     Sunrise
Sun -- 08:37 AM PDT     0.00 knots Slack
Sun -- 11:42 AM PDT     3.77 knots Max Flood
Sun -- 03:06 PM PDT     -0.01 knots Slack
Sun -- 05:33 PM PDT     -1.65 knots Max Ebb
Sun -- 08:17 PM PDT     0.00 knots Slack
Sun -- 08:27 PM PDT     Sunset
Sun -- 09:16 PM PDT     Moonrise
Sun -- 11:12 PM PDT     2.66 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Golden Gate Bridge .8 mi E ., San Francisco Bay, California Current, knots
12
am
1.5
1
am
0.2
2
am
-1.1
3
am
-2.5
4
am
-3.5
5
am
-3.8
6
am
-3.4
7
am
-2.4
8
am
-1
9
am
0.7
10
am
2.5
11
am
3.6
12
pm
3.7
1
pm
3.1
2
pm
1.9
3
pm
0.2
4
pm
-1
5
pm
-1.6
6
pm
-1.6
7
pm
-1.1
8
pm
-0.3
9
pm
0.9
10
pm
2
11
pm
2.6


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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