Monday, July26, 2021
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Marine Weather and Tides
Geyserville, 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 6:07AMSunset 8:28PM Monday July 26, 2021 5:10 PM PDT (00:10 UTC) Moonrise 9:39PMMoonset 7:51AM Illumination 93% Phase: Waning Gibbous; Moon at 17 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- 237 Pm Pdt Mon Jul 26 2021
Tonight..SE winds 5 to 10 kt. Wind waves 4 to 5 ft. SWell S around 2 ft at 15 seconds. A slight chance of showers and Thunderstorms.
Tue..S winds 5 to 10 kt. Wind waves 3 to 4 ft. SWell S around 2 ft at 15 seconds. A slight chance of showers and Thunderstorms.
Tue night..NW winds 5 to 10 kt. Wind waves 3 to 4 ft. SWell S around 2 ft at 14 seconds.
Wed..W winds around 5 kt. Wind waves 3 to 4 ft. SWell S around 2 ft at 13 seconds.
Wed night..NW winds 5 to 10 kt. Wind waves 3 to 4 ft. SWell S around 2 ft at 13 seconds.
Thu..W winds 5 to 10 kt. Wind waves 3 to 4 ft. SWell S around 2 ft at 13 seconds.
Thu night..NW winds 10 to 15 kt. Wind waves 5 to 6 ft. SWell S around 2 ft at 13 seconds.
Fri..W winds 5 to 10 kt. Wind waves 5 to 6 ft. SWell S around 2 ft.
Sat..W winds 5 to 10 kt. Wind waves 5 to 6 ft. SWell S around 2 ft. Winds and wind waves higher in and near Thunderstorms.
PZZ500 237 Pm Pdt Mon Jul 26 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Winds remain out of the northwest and are light, yet continue to drive the sea state at around 7 to 9 seconds despite a weak southerly swell present. Wind gusts will increase Monday afternoon and into the evening through the golden gate gap and into the san francisco bay. Slight chance of showers and high based Thunderstorms remains over the waters through Tuesday morning. Any developing Thunderstorms may be accompanied with lightning and erratic winds. Chances for Thunderstorms diminish Tuesday afternoon.


7 Day Forecast for Marine Location Near Geyserville CDP, CA
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location: 38.71, -123     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 262204 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 304 PM PDT Mon Jul 26 2021

SYNOPSIS. Widespread sprinkles, or light showers, possible through Tuesday. Mainly late day thunderstorm chances expected over the Sierra Nevada through the week. Cooler temperatures early this week before warming to above average again by mid-week.

DISCUSSION. Monsoon moisture continues to build north into NorCal around a strong upper level ridge set up over the central part of the country. PWATs have pushed into the 0.60 to 1.10" range across the area and we will continue to see them increase overnight with them maxing out over an inch tomorrow morning into the afternoon. The building moisture has brought quite a bit of cloud cover today and even a few sprinkles across the region. Overall instability is limited over our area this afternoon but there is some along the and east of the Sierra Crest and that is where some more intense showers have developed along with some isolated thunderstorms. This trend will continue mainly along the Sierra crest from around I-80 south into the early evening.

The main feature we are keeping an eye on is a short wave trough currently in SoCal that is spinning around the ridge. This short wave trough will continue to track north into the overnight and tomorrow and will be accompanied by the higher moisture values. This will bring light shower chance to the entire area later tonight and will continue into tomorrow. The best chances will be over the higher elevations. Upper level instability will be limited and should keep activity mainly as showers. Some weak instability will begin to build in during the afternoon but even that looks to be limited given the cloud cover we will see with this. Overall the showers are not going to produce much rain given the amount of dry air under the mid-level moisture but a brief downpour can't be ruled out mainly over the higher elevations. The cloud cover will hold daytime highs down tomorrow with them running near average in southern areas to as much as 15 degrees below average in northern areas. The forcing will push north by tomorrow night with dry conditions setting back in and clearing skies.

The upper level ridge will slowly push east Wednesday into the end of the week which will bring a warming trend to the region and we will see highs push back into the triple digits across the Valley. A trough off the coast of CA will cut off the Delta flow also which will limit cooling in the Delta and Sacramento area. Widespread moderate heat risk is expected by Thursday. Monsoon moisture will remain in place but we will see a lack of forcing. This will keep thunderstorm chances to the Sierra during the afternoon and early evening mainly from about I-80 south. Gusty erratic winds and brief downpours will be possible with any thunderstorms we see this week.

-CJM

EXTENDED DISCUSSION (Friday THROUGH Monday). Interior NorCal remains situated between ridging over the Rockies and troughing over the Eastern Pacific through the extended. This should bring above normal temperatures that gradually cool towards the end of the period. Monsoonal moisture surge could cause a few thunderstorms to develop along the Sierra crest, mainly south of I-80.

AVIATION. VFR conditions at TAF sites next 24 hours. Local MVFR to IFR conditions in wildfire smoke, mainly over Plumas County. Isolated to scattered thunderstorms possible over the mountains. Scattered -SHRA developing over the foothills this evening then ISOLD to Scattered -SHRA over the Vly after 07Z. Local southerly wind gusts up to 20 kts from KSAC northward. Local southwesterly surface wind gusts 25-35 kts vicinity west Delta.

STO WATCHES/WARNINGS/ADVISORIES. None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDXC1 27 mi64 min 57°F
ANVC1 - 9416841 - Arena Cove, CA 40 mi52 min NNE 5.1 G 14 53°F 1013.5 hPa
PRYC1 - 9415020 - Point Reyes, CA 49 mi52 min 58°F1014.1 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA17 mi17 minSSW 910.00 miMostly Cloudy68°F53°F59%1012.4 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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Last 24hrS11S12S9S11S7S9SE5S5S3CalmS3S5SW4S4CalmCalmS3CalmS5S6S10S8S9SW9
1 day agoS13S12S9S9S5S6S6S5S6S3S4S4SW3W3CalmCalm3S3SE8S7S11S15S13S13
2 days agoSE12S10S9SE9SE6SE5SE4S3CalmS3CalmCalmCalmCalmCalm3CalmSE45SW6S9S11S10S13

Tide / Current Tables for Fort Ross, California
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Fort Ross
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Mon -- 12:20 AM PDT     6.20 feet High Tide
Mon -- 06:10 AM PDT     Sunrise
Mon -- 07:23 AM PDT     -0.82 feet Low Tide
Mon -- 08:52 AM PDT     Moonset
Mon -- 02:13 PM PDT     5.08 feet High Tide
Mon -- 07:32 PM PDT     2.40 feet Low Tide
Mon -- 08:28 PM PDT     Sunset
Mon -- 10:39 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.26.15.44.12.50.9-0.2-0.8-0.7-01.12.43.64.65.14.94.43.62.92.52.52.93.74.6

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Mon -- 01:45 AM PDT     -0.00 knots Slack
Mon -- 05:01 AM PDT     -1.57 knots Max Ebb
Mon -- 06:10 AM PDT     Sunrise
Mon -- 08:52 AM PDT     Moonset
Mon -- 08:54 AM PDT     0.00 knots Slack
Mon -- 11:57 AM PDT     1.24 knots Max Flood
Mon -- 03:14 PM PDT     -0.00 knots Slack
Mon -- 05:37 PM PDT     -0.85 knots Max Ebb
Mon -- 08:29 PM PDT     Sunset
Mon -- 08:56 PM PDT     0.00 knots Slack
Mon -- 10:39 PM PDT     Moonrise
Mon -- 11:44 PM PDT     0.88 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.4-0.2-0.8-1.4-1.6-1.4-1.1-0.60.10.71.11.21.10.70.2-0.4-0.8-0.8-0.7-0.400.50.8

Weather Map
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GEOS Local Image of CentralWestCoast    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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