Friday, August14, 2020
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Marine Weather and Tides
Monterey, 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 6:23AMSunset 8:00PM Friday August 14, 2020 4:36 AM PDT (11:36 UTC) Moonrise 12:49AMMoonset 3:48PM Illumination 20% Phase: Waning Crescent; Moon at 25 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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PZZ535 Monterey Bay- 241 Am Pdt Fri Aug 14 2020
Today..NW winds around 5 kt, becoming W 5 to 15 kt this afternoon. Wind waves 1 to 2 ft. W swell 3 to 4 ft at 9 seconds. A slight chance of showers and Thunderstorms this afternoon.
Tonight..S winds 5 to 10 kt. Wind waves 1 ft. W swell 3 to 4 ft at 8 seconds.
Sat..W winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell around 3 ft at 8 seconds and sw around 2 ft at 19 seconds.
Sat night..W winds around 5 kt. Wind waves 1 ft. W swell 3 to 4 ft at 6 seconds and sw around 2 ft at 19 seconds.
Sun..SW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 3 to 4 ft at 6 seconds and sw around 2 ft at 18 seconds.
Sun night..W winds up to 10 kt. Wind waves 1 ft. W swell 3 to 5 ft at 6 seconds and sw around 2 ft at 18 seconds.
Mon..NW winds 10 to 20 kt. Wind waves 1 to 2 ft. W swell 3 to 4 ft and sw around 2 ft.
Tue..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 3 to 4 ft and sw around 2 ft. Winds and wind waves higher in and near Thunderstorms. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 241 Am Pdt Fri Aug 14 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Scattered showers are over the southern waters and moving northward. Lightning activity has decreased on radar, but there remains a slight chance for an isolated Thunderstorm through Friday afternoon, with the potential for locally gusty winds and rough seas near these storm cells. Moderate northwest winds are expected over the northern waters through the weekend. Prevailing seas remain mixed with a short period northwest swell and a longer period southerly swell.


7 Day Forecast for Marine Location Near Monterey, CA
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location: 36.59, -121.89     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 141055 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 355 AM PDT Fri Aug 14 2020

SYNOPSIS. Hot temperatures today with Excessive Heat Warnings inland and Heat Advisories around the Bay as record or near record heat develops. Little change through the weekend with continued hot temperatures inland. Little relief along the coast as the marine layer will be very shallow with only light onshore breezes. The ridge responsible for the hot weather will stay in place through early next week.

DISCUSSION. as of 3:55 AM PDT Friday . We are off to a warm start this morning with readings still in the 70s across inland areas and the hills with 60s elsewhere. Some of the higher ridges around 2000 feet remain in the 80s setting the stage for an upcoming hot day. Oddly enough the KMUX-88D radar continues to pick up returns offshore, associated with the remnants of Elida as some of its moisture gets pulled into a weak circulation off the coast. All the precip activity is forecast to remain well offshore today.

In terms of temperatures, record highs will likely be in jeopardy. A strong ridge over the Desert Southwest has nudged westward and bringing very hot temps to the region. 925 mb winds look to be light offshore or northerly. This is just enough to help with some adiabatic compression while the surface SFO to Sac is light at 0.9 mb. The marine layer has essentially been wiped out though Half Moon Bay is reporting cloud decks between 200-500 feet. For all intents and purposes it will be hot everywhere with little relief until you reach the immediate coast. All interior areas and much of the rest of the state will be under an Excessive Heat Warning starting at 11 am this morning and lasting at least through Weds evening. We currently have Heat Advisories up for the Bayside locations from 11 am this morning thru 9 pm tonight. The idea is we will be able to make day to day modifications for these areas should an upgrade or downgrade of heat headlines be necessary this weekend. Either way its going to be a hot weekend for the Bay Area. A glance at record highs for the next 3 days shows that many of the records were set just one year ago. Expect to see many records tied or broken this weekend with some impressive heat in excess of 105 for the far interior locations.

In terms of todays temps, need to mention that the band of high clouds currently over the region does introduce some complications. Those clouds kept portions of the Central Coast much cooler than expected on Thursday when Paso Robles reported a high of only 74 degrees (about a 25 degree bust from MOS). That being said model cross sections do show more clearing and sunshine occurring by this afternoon so we should realize the heat potential.

One item we will need to watch closely is any monsoon intrusions around the upper ridge this weekend. The latest nam and gfs solutions indicate this could occur Saturday night into Sunday morning. The monsoon push that impacted the Central Coast yesterday was handled pretty well and there is some consistency now developing for the Saturday night event. Just too many mesoscale details and convective feedback that could change things between now and then so wont paint any t-storms in the forecast at this time. On the heels of this type of hot weather any lightning is a concern for new ignitions and the latest fires across the state are showing extreme fire growth even in the absence of any significant wind.

Looking at the ECMWF not seeing much change of note through early next week with ridge over the West staying in place. Will have to see when we can drive the marine layer or a southerly surge back into place before we can get a cooling trend of note. We often dont see more than 3 consecutive days of hot temps but this could be an event that lasts well beyond that rule of thumb.

Heat impacts will be considerable this weekend. Take precautions seriously for sensitive populations.

AVIATION. as of 10:34 PM PDT Thursday . for 06z TAFs. It's VFR except for a few patches of LIFR in patchy coastal stratus vicinity KHAF. Mid and high clouds continue to move northward to the Bay Area, most of the showers have remained offshore or south of the terminals.

Vicinity of KSFO . VFR. Mid to high clouds overnight into Friday.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR. Mid to high clouds overnight and Friday.

MARINE. as of 02:52 AM PDT Friday . Scattered showers are over the southern waters and moving northward. Lightning activity has decreased on radar, but there remains a slight chance for an isolated thunderstorm through Friday afternoon, with the potential for locally gusty winds and rough seas near these storm cells. Moderate northwest winds are expected over the northern waters through the weekend. Prevailing seas remain mixed with a short period northwest swell and a longer period southerly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. Heat Advisory . CAZ506-508-512-528-529 Excessive Heat Warning . CAZ507-510-511-513-516>518 SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 AM



PUBLIC FORECAST: RWW AVIATION: DK MARINE: DK

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MEYC1 1 mi60 min 62°F 65°F1012 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 3 mi70 min 62°F2 ft
46092 - MBM1 13 mi77 min E 1.9 60°F 59°F1011.8 hPa (-1.1)
MLSC1 - Moss Landing, South Harbor, CA 16 mi41 min ESE 4.1 G 9.9 61°F 1012 hPa58°F
ELXC1 - Elkhorn Slough Reserve, CA 18 mi111 min SSE 4.1 61°F 60°F
46239 - Point Sur, CA (157) 20 mi40 min 57°F5 ft
46114 - West Monterey Bay, CA 25 mi40 min 60°F5 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 30 mi36 min NNE 7.8 G 9.7 60°F 1011.7 hPa58°F

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Monterey Regional Airport, CA3 mi42 minN 09.00 miFair69°F57°F68%1013 hPa
Salinas, Salinas Municipal Airport, CA16 mi43 minS 39.00 miFair65°F57°F76%1012.9 hPa

Link to 5 minute data for KMRY

Wind History from MRY (wind in knots)
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Last 24hrE3CalmE3CalmW6N43NE3NW6Calm44N4NW6CalmE3NW3CalmCalmW3N5CalmCalmCalm
1 day agoN3CalmE4E4NE3N6N5NW7NW7N9N6N7NW6N6N63NW3CalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmNW4SW5W5W5N8NW7
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W11W766W6SW4W3W3SW3CalmCalmCalmCalm

Tide / Current Tables for Monterey, Monterey Harbor, California (2)
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Monterey
Click for Map
Fri -- 01:48 AM PDT     Moonrise
Fri -- 02:15 AM PDT     0.26 feet Low Tide
Fri -- 06:24 AM PDT     Sunrise
Fri -- 09:17 AM PDT     3.49 feet High Tide
Fri -- 01:06 PM PDT     2.91 feet Low Tide
Fri -- 04:47 PM PDT     Moonset
Fri -- 07:21 PM PDT     5.32 feet High Tide
Fri -- 07:58 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.20.60.30.40.81.52.22.83.33.53.43.232.933.33.94.555.35.24.83.92.8

Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Fri -- 01:48 AM PDT     Moonrise
Fri -- 04:10 AM PDT     0.00 knots Slack
Fri -- 06:24 AM PDT     Sunrise
Fri -- 07:19 AM PDT     0.49 knots Max Flood
Fri -- 10:29 AM PDT     -0.00 knots Slack
Fri -- 12:26 PM PDT     -0.27 knots Max Ebb
Fri -- 03:49 PM PDT     0.00 knots Slack
Fri -- 04:48 PM PDT     Moonset
Fri -- 06:36 PM PDT     0.36 knots Max Flood
Fri -- 07:59 PM PDT     Sunset
Fri -- 09:23 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.6-0.5-0.3-00.20.40.50.50.40.1-0.1-0.3-0.3-0.2-0.100.20.30.40.30.1-0.2-0.5

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (7,2,3,4)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.