Wednesday, April8, 2020
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Marine Weather and Tides
Pescadero, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:40AMSunset 7:38PM Wednesday April 8, 2020 5:23 AM PDT (12:23 UTC) Moonrise 7:42PMMoonset 6:26AM Illumination 100% Phase: Full Moon; Moon at 15 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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PZZ560 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 237 Am Pdt Wed Apr 8 2020
.small craft advisory in effect until 3 am pdt early this morning...
Today..W winds 10 to 20 kt. Wind waves 1 to 2 ft. Mixed swell nw 4 to 5 ft at 8 seconds and S 2 to 3 ft at 17 seconds.
Tonight..SW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 4 to 6 ft at 9 seconds and S 2 to 3 ft at 17 seconds. A slight chance of showers.
Thu..S winds 5 to 15 kt. Wind waves 1 ft. Mixed swell nw 4 to 5 ft at 9 seconds and S 2 to 3 ft at 17 seconds.
Thu night..SW winds up to 10 kt. Wind waves 1 ft. Mixed swell nw 3 to 5 ft at 13 seconds and S 2 to 3 ft at 16 seconds.
Fri..NW winds 5 to 15 kt. Wind waves 1 ft. Mixed swell nw 3 to 4 ft at 12 seconds and S 2 to 3 ft at 16 seconds.
Fri night..NW winds 10 to 20 kt. Wind waves 1 ft. Mixed swell nw 3 to 4 ft at 12 seconds and S 2 to 3 ft at 15 seconds.
Sat..NW winds up to 10 kt. Wind waves 1 ft. Mixed swell nw 2 to 4 ft and S 2 to 3 ft.
Sun..NW winds 5 to 15 kt. Wind waves 2 to 3 ft. NW swell 4 to 6 ft and S around 2 ft.
PZZ500 237 Am Pdt Wed Apr 8 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... The low pressure system continues to slowly move over southern california and farther inland. Northwest winds will remain breezy through the morning and then decrease. Lightly scattered showers over the southern waters are possible. Northwest swell through the week, with a long period southerly swell that gradually decreases.


7 Day Forecast for Marine Location Near Pescadero, CA
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location: 37.18, -122.39     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 081148 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 448 AM PDT Wed Apr 8 2020

SYNOPSIS. Isolated to scattered rain showers will be possible over the Central Coast through midweek while mainly dry conditions prevail to the north. Temperatures will begin a gradual warming trend late in the week and into the upcoming weekend as conditions dry out region-wide.

DISCUSSION. as of 2:55 AM PDT Wednesday . The pesky low pressure system that brought a variety of weather to the Bay Area and Central Coast the last few days remains off the coast. Overnight satellite imagery shows a broad circulation, with embedded smaller circulations, spinning near the Channel Islands. The cyclonic flow continues to advect moisture around the slow moving low pressure. The advecting moisture has resulted in bands of scattered showers moving over the San Joaquin Valley and southern Monterey/San Benito. Over the last six hours a few gauges have tipped in southern Monterey/San Benito with a few hundredths up to a few tenths. It should be noted shower activity is struggling to have any additional northern movement. Latest hi-res models, like the HRRR and local WRF, keep showers chances through day, but mainly south of San Jose. In fact, most likely locations for showers will still be confined to Monterey/San Benito, but a stray shower could drift north. The cold low pressure will make for an interesting split with temperatures around the Bay Area/Central Coast. Southern areas will remain seasonably cool with filtered sunshine/showers (Monterey Bay region southward) and northern areas will be mild an in a few spots above normal (San Jose northward).

For tonight, the low finally moves eastward and begins its slow exit of California. Before it finally exits a few additional bands of showers may drift across the forecast area Wednesday night and Thursday. Once again, best chance for precip will be south of San Jose. Additional rainfall will generally be light. Given the recent rain and lingering low level moisture patchy fog will be possible Wednesday night and early Thursday.

Showers will end by Thursday night with a warming and drying trend developing. Warmer and drier conditions are expect over the weekend and into early next week.

AVIATION. as of 4:46 AM PDT Wednesday . for 12Z TAFs. A thick layer of stratus sits just off the coastline over the ocean, while higher clouds spill over head associated to the weather system over Southern California, tracking southeast. MVFR to VFR at this hour. Locally varying winds will transition back to onshore and strengthen in the afternoon as cloud cover lingers providing MVFR conditions possible through the TAF period.

Vicinity of KSFO . MVFR at KSFO and KOAK due to stratus clouds spilling into the Bay, with VFR elsewhere. Cigs are forecast to lift to around 3,000 feet in the afternoon. Lower clouds for MVFR conditions return in the evening for the remainder of the TAF period. Winds are breezy and will re-strengthen and be onshore in the afternoon.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Closer to the coast, winds are breezy with cigs around 1,500 feet and MVFR conditions. Farther inland and winds are calmer with VFR. Winds will become onshore and strengthen in the afternoon with cigs only lifting to around 2,500 feet. Isolated showers are possible in the evening.

MARINE. as of 02:37 AM PDT Wednesday . The low pressure system continues to slowly move over southern California and farther inland. Northwest winds will remain breezy through the morning and then decrease. Lightly scattered showers over the southern waters are possible. Northwest swell through the week, with a long period southerly swell that gradually decreases.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 PM SCA . Pt Arena to Pt Reyes 0-10 nm until 9 AM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm until 9 AM



PUBLIC FORECAST: MM AVIATION: DK MARINE: DK

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 24 mi54 min WSW 4.1 G 4.1 51°F 59°F1015.1 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 27 mi34 min NW 7.8 G 12 52°F 55°F7 ft1015.6 hPa48°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 29 mi34 min NW 7.8 G 14 51°F 53°F7 ft1016 hPa48°F
46092 - MBM1 35 mi166 min NNW 9.7 54°F 55°F1014.9 hPa
MLSC1 - Moss Landing, South Harbor, CA 41 mi36 min ESE 6 G 15 50°F 1014.9 hPa (-1.0)47°F
AAMC1 - 9414750 - Alameda, CA 41 mi54 min S 8 G 11 53°F 58°F1014.8 hPa
PXSC1 43 mi54 min 53°F 51°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 43 mi54 min SE 7 G 11 52°F 1013.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 43 mi54 min SSW 9.9 G 13
OBXC1 43 mi54 min 53°F 51°F
LNDC1 43 mi54 min S 7 G 8.9 53°F 1014.7 hPa
FTPC1 - 9414290 - San Francisco, CA 43 mi54 min 58°F
ELXC1 - Elkhorn Slough Reserve, CA 43 mi99 min SE 5.1 51°F 49°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi54 min SSW 8 G 13 52°F 1014.8 hPa
46237 - San Francisco Bar, CA (142) 44 mi54 min 55°F5 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 46 mi34 min WNW 12 G 14 51°F 52°F7 ft1015.2 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 46 mi54 min 57°F3 ft
MEYC1 48 mi48 min W 2.9 G 5.1 52°F 59°F1015.1 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 49 mi44 min S 8.9 50°F 1014 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Half Moon Bay Airport, CA24 mi29 minWNW 47.00 miOvercast50°F46°F88%1015.2 hPa

Link to 5 minute data for KPAO

Wind History from PAO (wind in knots)
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Last 24hr------------------Calm4Calm--NE4N4N7N7N8N10NW16NW14--NW13W10
1 day ago------------------Calm----CalmCalm45Calm44W4NW5NW5SW3W4
2 days ago--------------------44S8SW9
G13
SW7--NW6W6W4CalmCalmS5Calm4

Tide / Current Tables for Ano Nuevo Island, California
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Ano Nuevo Island
Click for Map
Wed -- 05:13 AM PDT     -0.37 feet Low Tide
Wed -- 06:43 AM PDT     Sunrise
Wed -- 07:25 AM PDT     Moonset
Wed -- 11:26 AM PDT     4.93 feet High Tide
Wed -- 05:22 PM PDT     0.47 feet Low Tide
Wed -- 07:38 PM PDT     Sunset
Wed -- 08:42 PM PDT     Moonrise
Wed -- 11:33 PM PDT     5.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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54.12.71.20.1-0.3-0.10.71.93.14.24.94.84.23.2210.50.61.32.43.74.85.5

Tide / Current Tables for Half Moon Bay, California
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Half Moon Bay
Click for Map
Wed -- 05:28 AM PDT     -0.27 feet Low Tide
Wed -- 06:44 AM PDT     Sunrise
Wed -- 07:25 AM PDT     Moonset
Wed -- 11:44 AM PDT     5.33 feet High Tide
Wed -- 05:36 PM PDT     0.57 feet Low Tide
Wed -- 07:39 PM PDT     Sunset
Wed -- 08:43 PM PDT     Moonrise
Wed -- 11:51 PM PDT     6.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.64.73.31.80.5-0.2-0.20.61.73.14.35.15.34.83.82.51.40.70.61.22.33.64.85.7

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (8,2,3,4)
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Ground Weather Radar Station San Francisco Bay Area, CA
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