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Marine Weather and Tides American Canyon, CA Version 3.4

NOTICE 8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it. 8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue. 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.

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Sunrise 7:21AM

Sunset 5:18PM

Monday January 18, 2021 6:22 PM PST (02:22 UTC)

Moonrise 10:53AM

Moonset 11:06PM

Illumination 31%

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.

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7 Day Forecast for Marine Location Near American Canyon, CA

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Area Discussion for - Sacramento, CA

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FXUS66 KSTO 182252 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 252 PM PST Mon Jan 18 2021

SYNOPSIS. Strong, gusty north to east winds will continue through Tuesday night. Less windy conditions expected by mid-week, then rain and snow return for the end of the week.

DISCUSSION. Some areas seeing a lull/decrease in the wind gusts from last nite/earlier this morning over Norcal as the initial low pressure system drops to the south (near 30N/120W) and away from our region. The 2nd system located near the ID/NV border is forecast to retrograde across NV and the Srn half of CA through Tue. This feature is deeper/colder (5H heights 546-550 dam compared to the initial system 567-568 dam), albeit it will be taking a different track across our region. This track favors a much stronger minus U [horizontal (to the W)] component of the wind in this particular case and a larger area in Norcal, mostly in our CWA, under a significant standardized wind anomaly (-5). Thus, we are expecting another late night/early morning round of significantly strong N to E winds over our CWA. Given the virtually unidirectional NE flow aloft, wind speeds could exceed that of last nite over the Sierra and with the reverse Gap flow through the Carquinez Strait. Pressure gradients are likely to peak similar to last nite/early this morning, with MFR-SAC around 15 mbs and RNO-SAC around 9-10 mbs. Local gusts 80+ mph are expected over the Sierra, 70+ near Jarbo Gap, and up to 50 mph on the W side of the Valley and Solano Co areas. The NAEFS anomaly table still pointing toward a potentially stronger wind event for areas to the southwest of Sacramento early Tuesday with a return interval near 30 years. Power outages and tree damage are certainly not out of the question.

Satellite shows some cumuliform cloudiness with the 2nd system which the NE flow could bank up along the E side of the Sierra Crest with possible spill-over snow showers on our side of zone 69. These system will bring CAA winds (due to the deeper/colder low) so min temps will be colder as well, but not as cold as Wed morning when winds subside allowing for strong radiational cooling in the Valley. The CAA will also result in cooler max temps for Tue.

By Tuesday evening, winds will start to decrease, especially across the Valley. Gusty winds are expected to linger over the Sierra Tuesday night, weakening significantly by Wednesday morning. Min temps will cool into the 30s by Wed and for the rest of the week. The dry air mass will preclude much widespread frost until the latter half of the week, although cloud cover, or the lack of it, will make it rather problematic for now.

Over the course of the week, temperatures will gradually cool through the 60s in the Valley, with temps returning to near normal by Fri with highs in the 50s in the Valley, 30s to 40s in the foothills and mtns.

Although there are model timing differences on Fri, we are reasonably certain in the chances of rain/mountain snow on Fri. There is enough model agreement that a seasonably cold upper trof will move into Norcal on Fri giving the CWA a chance of precip. The heaviest amounts are forecast over the Sierra (liquid amounts up to a half inch or so, and 5-7 inches or so of snow) but only a few hundredths in the Valley.

EXTENDED DISCUSSION (Friday THROUGH Monday).

Ensemble guidance is in good agreement a low pressure system will bring some unsettled weather to northern California Friday into Saturday as it digs south along the West Coast. Precip amounts for valley locations are not expected to be all that much. The foothills and mountains will see better chances for measurable precip. After a possible break in the stormy weather Saturday, we could see another impulse bring potentially more wet weather to the area by the end of the weekend and into next week. Models are indicating this second system could be more impactful then the Friday into Saturday system.

AVIATION.

VFR conditions next 24 hours. North wind gusts up to 30-40 kts in the Central Valley and Delta, locally higher. Areas of northeast to east wind gusts stronger than 50 kts over the Sierra.

STO WATCHES/WARNINGS/ADVISORIES. High Wind Warning until 7 PM PST Tuesday for Northeast Foothills/Sacramento Valley-Shasta Lake Area / Northern Shasta County-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

Wind Advisory until 7 PM PST Tuesday for Carquinez Strait and Delta-Central Sacramento Valley-Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley.

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
CQUC1	11 mi	33 min			53°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	11 mi	52 min	N 14 G 17	70°F			1012.4 hPa
UPBC1	15 mi	52 min	N 16 G 20
SFXC1 - San Francisco Bay Reserve, CA	15 mi	97 min	NNE 8.9	71°F			1013 hPa	18°F
MZXC1 - 9415102 - Martinez-Amorco CA	15 mi	52 min	N 9.9 G 17	71°F	53°F		1013 hPa
PCOC1 - 9415144 - Port Chicago, CA	17 mi	52 min	NW 6 G 8	71°F	53°F		1012.7 hPa
RCMC1 - 9414863 - Richmond, CA	21 mi	52 min	N 19 G 22	74°F	53°F		1012.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA	21 mi	52 min	NNE 23 G 29	74°F			1012.8 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA	23 mi	41 min	NW 8.9	65°F			1013 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	25 mi	52 min	N 19 G 23	68°F			1012.3 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	28 mi	52 min	N 17 G 21
OKXC1 - 9414776 - Oakland (Berth 34), CA	28 mi	52 min	N 17 G 20	65°F			1012.6 hPa
OBXC1	28 mi	52 min		69°F				27°F
LNDC1	29 mi	52 min	N 11 G 19	73°F			1012.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA	29 mi	52 min	N 13 G 17	67°F			1011.7 hPa
PXSC1	29 mi	52 min		68°F				41°F
FTPC1 - 9414290 - San Francisco, CA	29 mi	52 min	N 15 G 18	71°F	54°F		1012.8 hPa
AAMC1 - 9414750 - Alameda, CA	30 mi	52 min	N 8.9 G 14	72°F	54°F		1012.7 hPa
46237 - San Francisco Bar, CA (142)	34 mi	52 min			53°F	10 ft
BDXC1	42 mi	76 min			55°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA	43 mi	32 min	NW 16 G 19		53°F	9 ft	1013 hPa
RTYC1 - 9414523 - Redwood City, CA	49 mi	52 min	NNW 1.9 G 5.1	62°F	57°F		1013.2 hPa

Wind History for Union Pacific Rail Road Bridge (UPRR), CA

(wind in knots)    EDIT      (on/off)   Help

7 PM

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11 PM

12 AM

1 AM

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3 AM

4 AM

5 AM

6 AM

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Last 24hr

W3

SE1

NW3

W6

W6

NW5

SE6

E9

E5

E3 G7

SE6

SW4 G7

W5

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W6

NE9 G13

N11 G14

N10 G13

NE3 G6

NE5 G9

N11 G14

N11 G16

N15

N10 G13

1 day ago

NW4

NW9

W10

W7

NW5

W7

W4

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SE5

E7

SE6

SE7 G10

SE8

SE7

SE7

E5 G8

E4

E4

E7

E4

E4

N1

NE2

NE1

2 days ago

SE3

SE3

SE6

SE5

S3

W5

W3

W3

NW4

N2

W4

W5

W4

NW7

W5

NW3

W3

W3

NW4

NW2

NW4

NW8

NW5

NW6

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Napa, Napa County Airport, CA	1 mi	28 min	N 12	10.00 mi	Fair	69°F	18°F	14%	1011.7 hPa
Novato / Gnoss Field, CA	14 mi	27 min	NNW 7	10.00 mi	Fair	61°F	18°F	19%	1012.9 hPa
Fairfield / Travis Air Force Base, CA	20 mi	24 min	NNW 14 G 18	10.00 mi	Fair	67°F	13°F	12%	1012.8 hPa
Concord, Buchanan Field, CA	21 mi	29 min	N 4	10.00 mi	Fair	63°F	26°F	25%	1011.4 hPa
Vacaville Nut Tree Airport, CA	22 mi	29 min	N 24 G 32	10.00 mi	Fair and Windy	68°F	12°F	11%	1013.2 hPa

Link to 5 minute data for KAPC

Wind History from APC (wind in knots)

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Last 24hr

NE4

E3

Calm

Calm

Calm

SE4

Calm

SE6

S6

Calm

S8

W7

N18

N26 G33

N23 G36

N17 G24

N26 G37

N24 G34

N14 G22

N13 G22

N11

N17

NW9

N12

1 day ago

Calm

Calm

SE4

NE3

Calm

Calm

Calm

E4

Calm

NE3

NE3

Calm

Calm

Calm

Calm

Calm

W3

Calm

Calm

SW6

SW6

SW6

SW3

E6

2 days ago

Calm

E3

Calm

N7

N4

Calm

Calm

Calm

Calm

Calm

Calm

Calm

Calm

Calm

Calm

Calm

Calm

SW4

W3

3

S4

SW4

S5

S3

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Tide / Current Tables for Brazos Drawbridge, Napa River, Carquinez Strait, California

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Tide / Current Tables for Mare Island Strait, So Vallejo, San Pablo Bay, California Current

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Weather Map

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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

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Ground Weather Radar Station

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