Tuesday, June15, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Diablo, 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 5:43AMSunset 8:32PM Monday June 14, 2021 9:42 PM PDT (04:42 UTC) Moonrise 8:24AMMoonset 11:10PM Illumination 26% Phase: Waxing Crescent; Moon at 5 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
    EDIT      (on/off)   Help
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 901 Pm Pdt Mon Jun 14 2021
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..W winds 10 to 20 kt, diminishing to 5 to 15 kt after midnight.
Tue..W winds 10 to 20 kt with gusts up to 25 kt.
Tue night..W winds 10 to 20 kt with gusts up to 25 kt.
Wed..SW winds 5 to 15 kt.
Wed night..SW winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt with gusts up to 25 kt.
Thu night..SW winds 5 to 10 kt.
Fri..SW winds 5 to 15 kt.
Sat..SW winds 5 to 15 kt.
PZZ500 901 Pm Pdt Mon Jun 14 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Breezy northwest winds will continue through the overnight hours as high pressure builds inland. The strongest winds are expected along the big sur coast south of point sur. Winds will continue to increase Tuesday across the waters, with gale force gusts developing along the big sur coast. Strengthening winds will generate steep northwest waves resulting in hazardous seas conditions, particularly for smaller vessels. Light southerly swell will continue along with mainly wind driven northwest waves.


7 Day Forecast for Marine Location Near Diablo, CA
   Hourly   EDIT   Help
location: 37.87, -121.91     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 150415 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 915 PM PDT Mon Jun 14 2021

SYNOPSIS. Pleasant conditions for the remainder of Monday. High pressure over the desert southwest expands and moves over Southern California starting a warming trend on Tuesday. Robust heating is forecast Wednesday through Friday with peak heating on Thursday, prompting a Heat Advisory and Excessive Heat Warnings to be issued. Onshore flow will help limit impacts along the coastline and within the San Francisco Bay. The areas at most risk for heat impacts will likely be farther interior locations. Cooling expected over the weekend.


DISCUSSION. as of 08:55 PM PDT Monday . Satellite currently shows a stratus deck over the water and along parts of the central and North Bay coast line. Temperatures were seasonal this evening, with some areas along the coast seeing a few degrees below normal. That is still on track to change this week. The heat advisory and heat warnings are consistent with the newest data. The only change made is that the heat warning and advisory for Friday is extended into the evening hours, now lasting until 9 pm PDT. This will account for Friday's warmer temperatures as well. Winds will remain light overall, making fire weather less of a concern this week.

Models have been showing the delta breeze kicking in Thursday evening, which will bring cooler over night temperatures to the coast and inland locations for Friday morning. Temperatures will still get hot Friday, but we begin a cooling trend. Albeit slow, the cooling trend will bring temperatures back to normal by early next week. Normal is still fairly warm for the interior as we are moving back into summer patters.

PREV DISCUSSION. as of 02:05 PM PDT Monday . Thinly veiled stratus drapes over the ocean and down the California coastline, with clearer, sunny skies over the land other light cumulus around the highest peaks. Temperatures are in the low 70s, expecting to peak this afternoon in locations farther inland in the upper 70s/low 80s. Moderate northwest winds are breezy, but are expected to increase with localized gustier conditions along the coast and through coastal gaps.

From a big picture standpoint, there is a broad long wave trough over the Pacific Northwest with a high pressure ridge over the desert southwest centered just east of the Four Corners. Between these two features has been consistent southwest flow aloft, keeping conditions pleasant. Starting Tuesday, the trough will lift northward toward Canada, with the ridge expanding and strengthening back toward California.

ECMWF, GFS and ensemble models have the ridge growing to just under 600 dam at 500 millibars by Wednesday morning. These models depict at 850 millibars, temperatures slowly climbing to between 26 and 29 degrees Celsius by Thursday over much inland locations around the Bay Area and down the Central Coast. With winds being mostly limited to the coastline, all of this translates to a hot and dry airmass approaching the Bay Area increasing Tuesday, with hottest temperatures on Thursday and not beginning to cool down until the weekend. Therefore, a Heat Advisory has been issued for the North Bay Mountains and Valleys, East Bay Hills and Valleys, the Santa Clara Valley, the Santa Cruz Mountains, the Mountains of San Benito, the Santa Lucia Mountains and Southern Monterey County. For Thursday, the hottest day of the week, the North Bay Mountains, East Bay Hills and Valleys, the Mountains of San Benito, the Santa Lucia Mountains and Southern Monterey County get upgraded to an Excessive Heat Warning as temperatures in inland areas will likely climb toward and exceeding 100 degrees.

The good news for coastlines is that models are insinuating consistent onshore flow through the week, helping to tamper down temperatures there. What complicates the forecast is that winds on Wednesday look to be at their strongest, which if they materialize and move farther inland can inhibit the strength of the heat on the first day which is why it was a widespread advisory for the first day and not a warning at this time.

Temperatures Friday will still be hot but begin to go down. Any robust cooling is likely not expected until the weekend. However, that becomes a relative term now that June in the Bay Area is in full swing. Conditions leading into next week will be warm and dry.

AVIATION. as of 5:30 PM PDT Monday . For the 00z TAFs. VFR across terminals. Stratus over the coastal waters is observed on satellite banking up against most of the coastline, with the exception of Monterey Bay. Otherwise, clear skies over the terminals, as a drier airmass builds in from the desert southwest. Drier air and a stronger northerly gradient will result in less stratus over terminals this evening into Tuesday morning. Some low clouds may fill in along the bay coastlines but low confidence in Cigs at this point. Calm/light winds will also result in some LLWS at some of the North Bay terminals as a mid- level low departs the region from 7Z to 12Z. Widespread VFR will reign supreme across the region by tomorrow morning through the end of the TAF period as the surface high becomes the dominant synoptic feature. Breezy conditions return in the afternoon along the coast and especially near coastal gaps.

Vicinity of KSFO . Mostly clear skies with some gusty WNW winds (near 30 kt). Winds remain gusty through mid-evening and subside overnight. A compressed marine layer, drier air filtering into the area and hi-res model solutions suggest Cigs are less likely to form around the terminal overnight. Sct low clouds are included in the TAf with tempo Cig in the early morning but may be removed if drying trend continues. Gusty onshore winds (30-35 kt) return Tuesday afternoon near the terminal, with VFR through the end of the TAF period.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Satellite picture reveals clear skies over area terminals and the bay, though low clouds linger over the peninsula. Breezy onshore winds will weaken overnight. While some FEW/SCT low clouds are possible for the region tonight, marine stratus return will be limited to the immediate coast. TEMPO MVFR Cig included at KMRY but may be removed if drying trend continues. Expect widespread VFR tomorrow morning and through the end of the TAF period with some breezy afternoon winds.

MARINE. as of 02:52 PM PDT Monday . Northwest winds are expected to continue to increase across the waters today and tonight as high pressure builds farther inland. The strongest winds are expected along the Big Sur coast south of Point Sur, increasing more so on Tuesday when gale force gusts may develop. Increasing winds will generate steep northwest waves resulting in hazardous seas conditions, particularly for smaller vessels. Light southerly swell will continue along with mainly wind driven northwest waves.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . SF Bay until 9 PM SCA . Mry Bay until 9 PM



PUBLIC FORECAST: Dhuyvetter AVIATION: Lorber MARINE: DK

Visit us at www.weather.gov/sanfrancisco

Follow us on Facebook, Twitter, and YouTube at: www.facebook.com/nwsbayarea www.twitter.com/nwsbayarea www.youtube.com/nwsbayarea


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 12 mi55 min WNW 14 G 18 67°F 1016.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 15 mi55 min WSW 13 G 19 65°F 69°F1016.5 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 16 mi55 min W 13 G 19 65°F 67°F1016.9 hPa
UPBC1 16 mi55 min W 15 G 21
LNDC1 20 mi55 min WNW 4.1 G 8.9 62°F 1017.7 hPa
AAMC1 - 9414750 - Alameda, CA 22 mi55 min W 8.9 G 13 61°F 69°F1018.1 hPa
CQUC1 22 mi84 min 67°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 23 mi55 min W 13 G 15 65°F 1016.9 hPa
OBXC1 23 mi55 min 59°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi55 min W 13 G 17 60°F 1017.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 23 mi55 min W 11 G 18
PPXC1 - 9414847 - Richmond (Point Potrero), CA 24 mi55 min WNW 17 G 22 65°F 1017.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 24 mi58 min W 15 64°F 1016 hPa50°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 26 mi55 min W 8 G 13 59°F 1016.6 hPa
PXSC1 26 mi55 min 60°F 60°F
RCMC1 - 9414863 - Richmond, CA 27 mi61 min NW 8.9 G 14 64°F 64°F1017.5 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 29 mi92 min SSW 1.9 63°F 1017 hPa
FTPC1 - 9414290 - San Francisco, CA 30 mi61 min WSW 11 G 16 57°F 60°F1017.8 hPa
RTYC1 - 9414523 - Redwood City, CA 30 mi55 min W 11 G 14 62°F 1019 hPa
46237 - San Francisco Bar, CA (142) 39 mi43 min 57°F4 ft

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
Last
24hr
SW8
G12
SW6
SW3
SW3
G7
SW5
G9
SW6
SW7
G10
SW7
SW8
SW8
G11
SW10
G13
W10
G14
W8
G12
W13
W13
W16
W17
G21
W22
W18
G22
W21
W19
W20
W19
G23
SW15
1 day
ago
W15
W11
G17
SW12
SW9
G12
SW10
G13
SW9
G13
SW10
G15
SW9
G12
SW7
G10
SW10
G15
SW10
G17
W11
G17
W14
W15
W16
W16
W17
W15
W12
G16
SW14
G19
W17
W18
G22
SW13
G17
SW10
G13
2 days
ago
SW8
G11
W10
SW10
G13
SW9
G12
W7
W10
W8
W4
W8
W13
W12
G16
W19
W17
G22
W13
G20
W11
G14
W17
G21
W14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA11 mi50 minWSW 9 G 1810.00 miFair67°F47°F49%1015.5 hPa
Livermore, Livermore Municipal Airport, CA13 mi50 minSSW 710.00 miFair63°F50°F63%1017.1 hPa
Hayward, Hayward Air Terminal, CA18 mi49 minW 810.00 miA Few Clouds61°F56°F84%1018.7 hPa
Oakland, Metro Oakland International Airport, CA20 mi50 minWNW 1110.00 miA Few Clouds62°F53°F73%1017.7 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
Last 24hrW7SW5S5SW10SW6S7S8SW5W6W7W8SW9SW7S8NW8W8--SW10W14
G23
W15W14W17
G22
W15
G22
SW9
G18
1 day agoW8SW8S5S4S6SW5S7SW6SW8S8S10W11W9W11
G15
W10SW9W12W12
G18
SW14
G17
SW13
G21
SW14
G19
W14
G20
SW14SW8
2 days agoW8SW5SW6S3S6S5S5SW5SW6SW5SW7W6N4--CalmNW7NW14W13
G19
W12
G19
W10NW14
G20
W11W11W12

Tide / Current Tables for Pittsburg, New York Slough, Suisun Bay, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Pittsburg
Click for Map
Tue -- 12:10 AM PDT     Moonset
Tue -- 12:59 AM PDT     1.86 feet Low Tide
Tue -- 05:44 AM PDT     Sunrise
Tue -- 06:01 AM PDT     3.91 feet High Tide
Tue -- 10:27 AM PDT     Moonrise
Tue -- 01:50 PM PDT     -0.38 feet Low Tide
Tue -- 08:32 PM PDT     Sunset
Tue -- 08:54 PM PDT     3.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
21.922.53.13.73.93.73.22.51.60.80.1-0.3-0.4-0.20.41.222.733.232.6

Tide / Current Tables for Antioch Pt .3 mi E, San Joaquin River, California Current
   EDIT      (on/off)   Help   One Week of Data
Antioch Pt .3 mi E
Click for Map
Tue -- 12:09 AM PDT     Moonset
Tue -- 01:01 AM PDT     -0.53 knots Max Ebb
Tue -- 03:40 AM PDT     0.00 knots Slack
Tue -- 05:44 AM PDT     Sunrise
Tue -- 06:30 AM PDT     1.22 knots Max Flood
Tue -- 08:44 AM PDT     -0.00 knots Slack
Tue -- 10:27 AM PDT     Moonrise
Tue -- 12:18 PM PDT     -1.93 knots Max Ebb
Tue -- 04:47 PM PDT     0.00 knots Slack
Tue -- 08:03 PM PDT     1.47 knots Max Flood
Tue -- 08:31 PM PDT     Sunset
Tue -- 11:34 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-0.4-0.5-0.5-0.20.20.81.21.10.6-0.2-0.9-1.6-1.9-1.9-1.6-1.1-0.50.20.91.31.51.410.4

Weather Map
       (on/off)   Help Weather Map
wmap_P
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.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.