Monday, October25, 2021
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Marine Weather and Tides
Sereno del Mar, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:29AMSunset 6:20PM Monday October 25, 2021 12:24 PM PDT (19:24 UTC) Moonrise 8:39PMMoonset 11:21AM Illumination 77% Phase: Waning Gibbous; Moon at 20 days in cycle
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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 816 Am Pdt Mon Oct 25 2021
.small craft advisory in effect through late tonight...
Today..W winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 18 to 20 ft at 17 seconds. Showers likely and a slight chance of Thunderstorms this morning, then a chance of rain this afternoon.
Tonight..S winds 5 to 10 kt. Wind waves 1 ft. W swell 15 to 17 ft at 16 seconds.
Tue..S winds 10 to 15 kt with gusts up to 30 kt. Wind waves 1 to 2 ft. W swell 12 to 14 ft at 15 seconds. Rain.
Tue night..SE winds 5 to 10 kt. Wind waves 1 to 2 ft. W swell 10 to 12 ft at 14 seconds and S around 2 ft at 17 seconds. A chance of rain.
Wed..W winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft at 13 seconds and S around 2 ft at 16 seconds.
Wed night..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft at 19 seconds and S around 2 ft at 15 seconds.
Thu..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 8 to 10 ft and S around 2 ft.
Fri..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft. Winds and wind waves higher in and near Thunderstorms.
PZZ500 816 Am Pdt Mon Oct 25 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light west to southwest winds will prevail across the waters today. Another weaker frontal system will approach the waters into Tuesday allowing southerly winds to return tomorrow before shifting back out of the northwest midweek. The main concern over the waters in the near term remains a large and dangerous west to northwest swell with heights of 16 to 24 feet at 16 to 18 seconds. SWell heights are expected to peak this afternoon and bring dangerous conditions to the surf zone and near harbor entrances with breaking waves of 20 to 30 feet. This will also result in hazardous conditions over the waters.


7 Day Forecast for Marine Location Near Sereno del Mar, CA
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location: 38.4, -123.09     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 251732 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1032 AM PDT Mon Oct 25 2021

SYNOPSIS. Rain this morning will gradually taper to midday showers as the atmospheric river shifts south of the region. Dry weather returns all areas tonight into Tuesday morning. A weak system will bring some light rain chances to the North Bay Tuesday while the rest of the region stays dry. High pressure builds Wednesday through Friday with a return to seasonably mild and dry weather.

DISCUSSION. as of 4:12 AM PDT Monday . Its been a memorable past 24 hours for the Bay Area as the long talked about atmospheric river rolled through the region. We literally have gone from fire/drought conditions to flooding in one storm cycle. Some of the rainfall totals are staggering with our ever reliable observer in Kentfield reporting over 11 inches of rain on Sunday at the base of Mt Tamalpais. It'll take a bit to reliably check all of our data but 24 daily record of 4.02 inches for downtown SF smashed the previous October daily rainfall record of 2.48 inches back on Oct 13th 2009. It looks like yesterday was the 4th wettest day ever for downtown SF where records go back to the Gold Rush years. The 4.02 inches of precip looks to be the 4th wettest day ever according to our records. In an odd coincidence SFO reported 4.02 inches yesterday as well with the old daily record 0.74 back in 1998. The list goes on and on but even usually dry spots like Livermore reported 3.57 inches on Sunday. The Mt Tamalpais gage has a 2 day total of 16.29 inches and 26.92 inches this month alone! San Jose 2 day total 1.79 inches, Oakland 4.27 inches and Ben Lomond 8.93 inches.

The AR is now centered over Monterey county and the gauges in the Santa Lucia range are tipping rapidly with totals of 3-4.5 inches over the last 6 hours. We currently have a flash flood warning in place for the Dolan Fire burn scar with concerns about rock and debris rolling onto Highway 1. Will see what daylight brings.

We are seeing some rain redevelop across the North Bay at this hour as some of the cooler/unstable air starts to filter in behind the AR. Expect rain to continue through 7-8 am before decreasing rapidly in the North Bay. Several of the creeks and streams remain in flood stage with local flood products still in place across Sonoma county. Even at this hour Mt Tam is still reporting 0.41 hourly rain rates with several locations in the East Bay hills and Santa Cruz mountains still reporting rates around 0.20 inch per hour. In general though as we approach daybreak the heaviest rains will be confined to the coastal hills of Monterey county. As the AR drifts south most of the steady rain should move out of Monterey county before noon. A few showers possible this afternoon but nothing of consequence expected as things stabilize pretty quickly.

Dry conditions tonight but then a fast moving system approaches overnight with increasing clouds. This will lead to a chance of some light rain for the North Bay on Tuesday but amounts look very light on the order of a tenth or two. The rest of the Bay Area looks to remain dry south of the Golden Gate on Tuesday.

High pressure builds Wednesday through Friday with a noted warming and drying trend as highs warm back into the 70s most locations. No more AR events on the horizon and things look dry into the weekend as a more seasonable pattern returns.

AVIATION. as of 10:31 AM PDT Monday . For the 18z TAFs. The bulk of the precipitation from the Atmospheric River is now south of the region. Lingering post frontal showers remain mainly south of the SF Bay Area around the Monterey sites. Slight chance of scattered showers into this afternoon before dry conditions return the rest of the day. Post frontal cumulus can be seen on satellite with observations showing cigs at about 1,500 to 5,000 ft AGL. Expect SCT to BKN cigs VFR/MVFR cigs to persist through much of the taf period. A weak boundary will approach northern California tonight into Tuesday morning, this will bring some light showers to the SF Bay Area and northward starting in the morning. There may also be lowering cigs and patchy MVFR conditions. Latest HRRR shows showers reaching the North Bay around 15z-17z Tuesday morning and then reaching the SF Bay Area around 20z-22z. Again, showers should be mainly light. Light winds this morning aside from locally breezy W winds around the SF Bay Area this afternoon at 15-20 kt.

Vicinity of KSFO . VFR with occasional MVFR cigs possible as post frontal cumulus pops up in the area. Slight chance of showers in the vicinity into this afternoon. Cigs should become more scattered in the afternoon. Breezy W winds persist at about 15-20 kt with gusts to 25 kt this afternoon into the early evening. Showers look to approach Tuesday afternoon.

KSFO Bridge Approach . Similar to KSFO.

Monterey Bay . KMUX radar shows some lingering showers around KMRY and KSNS with MVFR cigs at about 1,500 to 3,000 ft AGL. MVFR conditions the next hour or so before lifting. Post frontal cumulus is forecast into the afternoon with cig heights 3,000 to 6,000 ft expected. Improving conditions into this evening, though may see some patchy low clouds into early Tuesday morning. Breezy westerly winds this afternoon 15-20 kt.

BEACHES. as of 3:00 AM PDT Monday . A strong, early season storm system will continue to increase wave energy into early Tuesday. This wave energy will transition through the coastal peak today. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the swell train as it peaks this afternoon and results in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect through 11AM Tuesday, with the highest risks once again at west to northwest facing beaches.

MARINE. as of 08:16 AM PDT Monday . Generally light west to southwest winds will prevail across the waters today. Another weaker frontal system will approach the waters into Tuesday allowing southerly winds to return tomorrow before shifting back out of the northwest midweek. The main concern over the waters in the near term remains a large and dangerous west to northwest swell with heights of 16 to 24 feet at 16 to 18 seconds. Swell heights are expected to peak this afternoon and bring dangerous conditions to the surf zone and near harbor entrances with breaking waves of 20 to 30 feet. This will also result in hazardous conditions over the waters.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. High Surf Warning . CAZ006-505-509-529-530 SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Mry Bay



PUBLIC FORECAST: RWW AVIATION: AS MARINE: AS BEACHES: Diaz

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDXC1 6 mi198 min 56°F
PRYC1 - 9415020 - Point Reyes, CA 29 mi54 min 57°F1009.8 hPa
46214 - Point Reyes, CA (029) 38 mi58 min 58°F21 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 47 mi44 min W 12G16 57°F1010.5 hPa
ANVC1 - 9416841 - Arena Cove, CA 48 mi54 min SSW 1.9G2.9 56°F 1009.2 hPa
46237 - San Francisco Bar, CA (142) 49 mi54 min 58°F 57°F17 ft
RCMC1 - 9414863 - Richmond, CA 49 mi54 min WNW 8.9G11 60°F 60°F1009.7 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 49 mi103 min NNW 5.1 60°F 1009 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA17 mi31 minNNW 410.00 miLight Rain60°F53°F78%1008.9 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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Last 24hrSW8S5S5S4S4SE4SE6S7S7S7S8S7S6SW8S40W40000SW5W8N4
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2 days agoS6W9W9SW8SW9SW6S3S5S3SW300SE300W30E500000S4

Tide / Current Tables for Bodega Harbor entrance, California
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Bodega Harbor entrance
Click for Map
Mon -- 03:44 AM PDT     4.03 feet High Tide
Mon -- 07:31 AM PDT     Sunrise
Mon -- 08:19 AM PDT     3.44 feet Low Tide
Mon -- 12:20 PM PDT     Moonset
Mon -- 01:48 PM PDT     5.07 feet High Tide
Mon -- 06:20 PM PDT     Sunset
Mon -- 09:14 PM PDT     0.37 feet Low Tide
Mon -- 09:38 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Mon -- 12:56 AM PDT     0.84 knots Max Flood
Mon -- 04:33 AM PDT     -0.00 knots Slack
Mon -- 06:36 AM PDT     -0.50 knots Max Ebb
Mon -- 07:33 AM PDT     Sunrise
Mon -- 09:41 AM PDT     0.00 knots Slack
Mon -- 12:22 PM PDT     Moonset
Mon -- 12:33 PM PDT     0.47 knots Max Flood
Mon -- 03:03 PM PDT     -0.00 knots Slack
Mon -- 06:21 PM PDT     Sunset
Mon -- 06:44 PM PDT     -1.12 knots Max Ebb
Mon -- 09:39 PM PDT     Moonrise
Mon -- 10:45 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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