Sunday, July5, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Seacliff, 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 5:53AMSunset 8:32PM Sunday July 5, 2020 1:27 PM PDT (20:27 UTC) Moonrise 8:23PMMoonset 5:14AM 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
    EDIT      (on/off)   Help
PZZ535 Monterey Bay- 851 Am Pdt Sun Jul 5 2020
.small craft advisory in effect through this evening...
.small craft advisory in effect from Monday morning through Monday evening...
Rest of today..W winds 5 to 15 kt, increasing to 15 to 25 kt with gusts up to 35 kt this afternoon. Wind waves 3 to 4 ft. W swell 3 to 5 ft at 8 seconds and S 2 to 3 ft at 16 seconds.
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. Mixed swell W 3 to 5 ft at 9 seconds and S 2 to 3 ft at 16 seconds.
Mon..W winds 20 to 30 kt with gusts up to 35 kt. Wind waves 4 to 5 ft. Mixed swell W 3 to 5 ft at 9 seconds and S 2 to 3 ft at 15 seconds.
Mon night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. W swell 4 to 6 ft at 8 seconds and sw around 2 ft at 15 seconds.
Tue..W winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. W swell 3 to 5 ft at 9 seconds and S around 2 ft at 14 seconds.
Tue night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 3 to 5 ft at 10 seconds and S around 2 ft at 14 seconds.
Wed..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 2 to 4 ft and S around 2 ft.
Thu..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 2 to 4 ft and S around 2 ft. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 851 Am Pdt Sun Jul 5 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A 1030 mb high centered 1000 miles west of cape mendocino will move closer to the coast through Monday. As a result, gusty northwest winds will continue over the coastal waters into midweek. Gale force gusts are possible along the big sur coast Monday afternoon and evening. Strong northwest winds will generate steep fresh swell resulting in hazardous seas conditions. A long- period southerly swell will continue through Monday before swell periods begin to subside.


7 Day Forecast for Marine Location Near Seacliff, CA
   Hourly   EDIT   Help
location: 36.97, -121.91     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 051800 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1100 AM PDT Sun Jul 5 2020

SYNOPSIS. Warm and dry conditions continue through Sunday as a result of high pressure lingering over the region. Winds will remain onshore and breezy. A slight cooling of temperatures are forecast on Monday as onshore flow increases and the marine layer likely returns. Temperatures will be more seasonable for most of next week, with warming likely late in the week and into next weekend.

DISCUSSION. as of 08:52 AM PDT Sunday . Skies remain clear as the last patch of clouds over the Eastern Monterey Bay slowly dissipates. The Park Fire, east of Morgan Hill, has been reported via Cal Fire twitter to be approximately 100 acres and who's smoke plume is still visible on satellite. Temperatures this morning are a couple degrees warmer than 24 hours previously, so the forecast of another hot and dry day is still expected today.

As the next upper level trough moves southward down the Washington coast, expected the marine layer to deepen overnight and continued onshore directional flow through the week. This onshore flow will help cool temperatures slightly on monday, with 60s and 70s near the coast and 80s inland (isolated low-90s). No changes to the long term forecast as mentioned in the previous discussion.

PREV DISCUSSION. as of 3:00 AM PDT Sunday . High pressure remains over the region tonight and is resulting in warm and dry conditions above the nocturnal inversion. Satellite imagery depicts rare clear Fourth of July night skies under a bright Buck Moon. That said, latest imagery indicates an isolated patch of marine stratus is redeveloping at a rapid clip offshore of Moss Landing (on the coast halfway between Monterey and Santa Cruz). Overnight satellite imagery has also been active due to a wide number of grass fires that developed most likely due to fireworks being shot off. The largest of these fires is the #ParkFire burning just east of Morgan Hill on the southeastern flank of Anderson Lake, as of 1am it was 40 acres in size and prompted evacuations. Dry conditions will persist through the weekend so please be mindful of any activities that may lead to wildfires throughout the remainder of the holiday. Local and national air monitoring picked up on the increase in air particulates in the near surface atmosphere through this evening in response to the number of fireworks being set off with many urban areas rising into the unhealthy range early into the night. The stagnant air mass in place will likely keep this smoke near surface to a few hundred feet until the cap breaks in the mid morning.

High pressure is forecast to remain in place again today with only minor temperature and humidity differences versus yesterday. Coastally influenced regions will run a degree or two cooler as onshore flow increases, particularly near the coast and through coastal gaps, while the interior areas will be a degree or two warmer than yesterday. Breezy to locally gusty onshore winds this afternoon and evening will leak into segments of the drier interior valleys which warrants closer watch given the active wildfires that developed overnight. The marine layer is not anticipated to make a significant comeback until Monday night, however, given that a patch of stratus popped up near Moss Landing tonight it is conceivable that additional patches of the marine layer will redevelop Sunday night along the immediate coast especially where sea surface temperatures are coolest.

By Monday, the same low pressure trough that was over the region this last Thursday will become revitalized by a series of vorticity pulses passing through it. As a result, it will dig southward and shunt the high pressure currently overhead southward and out of the local region promoting cooler and moister weather for the Bay Area and Central coast. Onshore flow will increase further on Monday which will help cool the region further while lower pressure aloft will relieve the pressure valve on the marine layer and allow it to rebuild easier along the coast. The base of the low pressure trough then swings inland Tuesday through midweek which is anticipated to weaken the onshore wind gradient but allow the marine layer to deepen. Due to the weaker onshore winds, onshore advection of cool, moist marine air will be weaker thus forcing slightly warmer temps for the interior through mid week.

The end of the work week almost looks like a carbon copy of last week, with the Bay Area sandwiched between low pressure to the north and backbuilding high pressure to the southeast. These features expanding or contracting a few hundred miles one direction or the other will sway the forecast warmer/cooler and we see this playing out with some model uncertainty in the mid to long range forecast models late next week. The EURO supports a rebuilding of the ridge from the southeast (similar to what actually happened late last week) while the GFS supports the trough overpowering the ridge (which is not what happened late last week). Given a similar setup and higher confidence in the EURO output, forecast has been trended towards EURO deterministic data. Expect a warming/drying trend into next weekend as a result.

AVIATION. as of 11:00 AM PDT Sunday . for 18Z TAFS. VFR conditions prevail over the region this morning with onshore flow beginning to increase. Expecting generally west to northwest winds of around 12 kt or greater at most terminals this afternoon with locally stronger gusts in excess of 20 kt in the typically windy locations. Wind speeds diminish after sunset with VFR conditions likely to prevail for most sites in and around the San Francisco Bay Area, yet can't rule out few/sct low clouds around sunrise Monday. Meanwhile, higher confidence in the return of MVFR/IFR ceilings around the Monterey Bay terminals early Monday morning as the marine layer returns.

Vicinity of KSFO . VFR. West winds increasing to 20-25 kt with gusts to 30-34 kt after 21Z. Winds trend weaker late in the night and into Monday morning, yet will remain moderate onshore.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR. West winds 10-15 kt with gusts to 20 kt in the Salinas Valley after 20Z. Onshore winds diminish late in the evening and overnight with MVFR/IFR ceilings developing around or after 09z Monday.

MARINE. as of 08:52 AM PDT Sunday . A 1030 mb high centered 1000 miles west of Cape Mendocino will move closer to the coast through Monday. As a result, gusty northwest winds will continue over the coastal waters into midweek. Gale force gusts are possible along the Big Sur coast Monday afternoon and evening. Strong northwest winds will generate steep fresh swell resulting in hazardous seas conditions. A long- period southerly swell will continue through Monday before swell periods begin to subside.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. 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 Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . SF Bay from 11 AM SCA . Mry Bay from 11 AM



PUBLIC FORECAST: DRP/DK AVIATION: RGass MARINE: RGass

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
MLSC1 - Moss Landing, South Harbor, CA 13 mi113 min W 4.1 G 12 58°F 1016.8 hPa57°F
ELXC1 - Elkhorn Slough Reserve, CA 14 mi102 min WNW 5.1 65°F 58°F
46092 - MBM1 16 mi118 min NW 16 57°F 58°F1016.5 hPa (+0.0)
46240 - Cabrillo Point, Monterey Bay, CA (158) 24 mi61 min 60°F3 ft
MEYC1 25 mi51 min NW 14 G 16 60°F 62°F1016.9 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 29 mi37 min NW 19 G 25 56°F 8 ft1017.2 hPa53°F
46114 - West Monterey Bay, CA 30 mi31 min 56°F9 ft
RTYC1 - 9414523 - Redwood City, CA 40 mi57 min NNW 8.9 G 11 71°F 75°F1016.6 hPa
46239 - Point Sur, CA (157) 44 mi31 min 56°F8 ft

Wind History for Monterey, CA
(wind in knots)    EDIT      (on/off)   Help
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
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
Last
24hr
N14
NW13
G16
NW14
NW9
G12
NW4
G9
NW6
G11
W5
G11
W4
G8
SW3
G8
SW3
G6
W4
G9
W4
G7
W5
G9
SW4
SW4
G8
SW2
W3
G7
W6
W3
W7
G10
NW9
G13
NW9
G15
NW12
W10
G14
1 day
ago
W8
G11
W7
G12
W10
G16
W12
G15
W9
G14
W7
G10
W4
G8
W1
SW2
SW2
G5
W6
G9
SE3
S2
NW3
N2
N2
SE1
NE4
NE2
NE4
N4
G7
N4
N8
N12
2 days
ago
SW13
G20
SW18
G26
SW19
G27
SW21
G29
SW17
G28
SW17
G25
SW12
G20
SW10
G15
SW10
G14
S6
S4
E2
G6
SE6
SE3
SE2
G5
E2
SE3
W1
E4
E2
N2
N6
NW8
NW9
G13

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA7 mi34 minS 710.00 miFair76°F55°F50%1016 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
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
Last 24hrSW8S6S7S7S6S6S6CalmCalmCalmCalmCalmCalmCalmCalmCalmNW4CalmCalmCalm4SW6SW5S7
1 day agoW8SW7SW7SW8SW7S8SW5S5SE5CalmCalmCalmCalmCalmN3CalmCalmCalmCalmCalm33S6SW7
2 days agoW10
G16
SW8W5
G16
W11
G17
W8W7W6W5W3S4CalmCalmCalmCalmN3Calm3CalmCalmCalm36W7SW7

Tide / Current Tables for Santa Cruz, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Santa Cruz
Click for Map
Sun -- 05:23 AM PDT     -1.34 feet Low Tide
Sun -- 05:54 AM PDT     Sunrise
Sun -- 06:14 AM PDT     Moonset
Sun -- 12:56 PM PDT     4.45 feet High Tide
Sun -- 05:07 PM PDT     2.95 feet Low Tide
Sun -- 08:30 PM PDT     Sunset
Sun -- 09:23 PM PDT     Moonrise
Sun -- 11:00 PM PDT     5.96 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
5.23.82.10.5-0.7-1.3-1.2-0.70.21.32.53.54.24.44.23.73.233.13.64.35.15.76

Tide / Current Tables for Point Pinos, California Current
   EDIT      (on/off)   Help   One Week of Data
Point Pinos
Click for Map
Sun -- 12:21 AM PDT     -0.00 knots Slack
Sun -- 03:44 AM PDT     -1.11 knots Max Ebb
Sun -- 05:55 AM PDT     Sunrise
Sun -- 06:14 AM PDT     Moonset
Sun -- 07:43 AM PDT     0.00 knots Slack
Sun -- 10:52 AM PDT     0.88 knots Max Flood
Sun -- 02:11 PM PDT     -0.00 knots Slack
Sun -- 04:25 PM PDT     -0.47 knots Max Ebb
Sun -- 07:31 PM PDT     0.00 knots Slack
Sun -- 08:29 PM PDT     Sunset
Sun -- 09:21 PM PDT     Moonrise
Sun -- 10:20 PM PDT     0.59 knots Max Flood
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
0.1-0.3-0.7-1-1.1-1-0.7-0.30.10.60.80.90.80.50.1-0.3-0.5-0.5-0.3-0.10.10.40.60.6

Weather Map
       (on/off)   Help Weather Map
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 (16,3,4,5)
      (on/off)   Help

Ground Weather Radar Station San Francisco Bay Area, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.