Thursday, October1, 2020
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Marine Weather and Tides
Mountain Gate, 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.

Sunrise 7:05AMSunset 6:52PM Thursday October 1, 2020 9:40 AM PDT (16:40 UTC) Moonrise 6:14PMMoonset 5:46AM Illumination 100% Phase: Full Moon; Moon at 14 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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PZZ415 Expires:201909161915;;886895 Fzus76 Keka 161819 Mwseka Marine Weather Statement National Weather Service Eureka Ca 1119 Am Pdt Mon Sep 16 2019 Pzz410-415-450-470-161915- 1119 Am Pdt Mon Sep 16 2019
.isolated strong Thunderstorms over the coastal waters... The areas affected include... Coastal waters from point saint george to cape mendocino ca out 60 nm... At 1114 am, doppler radar indicated a few strong Thunderstorms, capable of producing wind gusts to around 30 knots, from 5 nm northwest of orick to 45 nm west of patrick's point. These storms are moving southeast at 10 knots. Precautionary/preparedness actions... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms passes. && lat...lon 4174 12416 4145 12406 4123 12411 4114 12416 4105 12415 4106 12414 4102 12411 4070 12426 4071 12426 4058 12435 4083 12572 4096 12565 4178 12460 4178 12426
PZZ400 846 Am Pdt Thu Oct 1 2020
Synopsis for northern california waters..Moderate to strong breeze northerly winds and steep seas will prevail today through the weekend, mainly in the southern outer waters. Otherwise, a long- period northwest swell will gradually decay through today, with additional northwest swell trains moving through the waters late in the week.


7 Day Forecast for Marine Location Near Mountain Gate, CA
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location: 40.77, -122.34     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 011109 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 409 AM PDT Thu Oct 1 2020

SYNOPSIS. Above normal temperatures and very dry conditions will be seen through Friday. Areas of wildfire smoke will impact interior Norcal for the next couple of days. Continued dry weather and a slight cooling trend is expected for the weekend, although temperatures remain above normal.

DISCUSSION. A strong and highly amplified 2+ height anomaly ridge with a 5 to 10 year return interval will remain stationary over the W coastal states into Old Mexico through Fri before there is some weakening of the ridge over the weekend. The "Omega Block" is locked in place over Wrn NOAM by 2 long wave trofs, one over the Ern third of NOAM, and the other near 150W. This will result in well above normal temps with max temps some 14 to 22 degrees above normal today and widespread areas of moderate heat risk for this time of year. Given little movement is forecast with the high pressure cell over NV today, similar to yesterday, this will maintain the Ely and Nly pressure gradients and the Nly flow for another day. We do expect a gradual weakening of the Ely and Nly pressure gradients later in the day due to pressure falls from daytime heating.

Solano Co area likely to encounter another day triple digit temps and heat risk from the adiabatic warming effects from the Vaca Mtns. Record highs for Fairfield 104 set in 1952, and 104 at Vacaville Nut Tree Airport set in 2001, and 101 at Travis AFB in 1970 are possible. In fact, tying the record max at KSUU has a 70% chance of occurring according to our experimental NBM viewer. tying the record high potential is much lower in our other main climo areas with just 26% at KSCK (100 in 2001) and 17% at KRDD (104 in 2001). The wafting/drifting of wild fire smoke also adds to the uncertainty of establishing record temps.

Shifting of the high pressure cell to the west and over the Socal area on Fri will lessen the impact of Nly winds. Temps will not be quite as hot as today and this trend will continue on Sat as high pressure gradually weakens over the region. On Sun, onshore floor will provide some much needed relief with max temps cooling into the 80s in the Valley and mostly 60s and 70s in the high Sierra. This is up to 6 degrees above normal in the lower elevations and about 8 to 12 degrees above normal in the mountains. In addition, humidity recovery will remain poor to moderate over the higher terrain due to a strong subsidence inversion until the weekend.

Now that the calendar has turned to Oct 1, we begin a new water year today Happy new water year. hopefully it will be (b/w)etter than the last. JHM

EXTENDED DISCUSSION (Monday THROUGH Thursday).

GEFS and EC ensemble in general agreement weakening the persistent West Coast ridge and shifting it east by the middle of next week. Pattern will remain dry for NorCal with temperatures still around 10 degrees above average early in the week, returning to only slightly above average by Thursday.

AVIATION.

Widespread MVFR with local IFR conditions due to wildfire smoke expected across the Central Valley next 24 hours. Surface wind gusts generally under 12 kts except local northeast gusts 20-30 kts northern Sierra until 17Z.

STO WATCHES/WARNINGS/ADVISORIES. Heat Advisory from noon today to 8 PM PDT this evening for Carquinez Strait and Delta.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 99 mi124 min 60°F1019.5 hPa

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Redding Municipal Airport, CA18 mi47 minNNW 64.00 miHaze Smoke81°F42°F25%1016.1 hPa

Link to 5 minute data for KRDD

Wind History from RDD (wind in knots)
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Last 24hrCalm4Calm3NE4N6N7W6W5W5NW5N7N6N5CalmN5N4N4N7N7N7N8NW6N6
1 day agoCalmCalmCalmCalmS3S4SE3SE3NW3CalmCalmCalmCalmN3CalmCalmCalmCalmCalmCalmCalmNW3CalmCalm
2 days agoN14
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N10N10N10NE8N8NW4CalmW5CalmNE3CalmCalmCalmW3NW3CalmCalm

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Arcata Wharf
Click for Map
Thu -- 12:57 AM PDT     6.52 feet High Tide
Thu -- 06:53 AM PDT     Moonset
Thu -- 07:13 AM PDT     Sunrise
Thu -- 07:13 AM PDT     0.77 feet Low Tide
Thu -- 01:30 PM PDT     6.56 feet High Tide
Thu -- 02:06 PM PDT     Full Moon
Thu -- 06:57 PM PDT     Sunset
Thu -- 07:21 PM PDT     Moonrise
Thu -- 07:34 PM PDT     1.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.26.56.25.23.82.41.30.811.93.24.65.86.56.55.84.73.32.21.41.423.14.4

Tide / Current Tables for Eureka Slough Bridge, Humboldt Bay, California
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Eureka Slough Bridge
Click for Map
Thu -- 12:41 AM PDT     7.00 feet High Tide
Thu -- 06:31 AM PDT     0.68 feet Low Tide
Thu -- 06:53 AM PDT     Moonset
Thu -- 07:13 AM PDT     Sunrise
Thu -- 01:14 PM PDT     7.04 feet High Tide
Thu -- 02:06 PM PDT     Full Moon
Thu -- 06:52 PM PDT     1.26 feet Low Tide
Thu -- 06:57 PM PDT     Sunset
Thu -- 07:21 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.876.34.93.21.70.80.81.42.64.15.56.576.85.84.32.71.61.31.72.745.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Beal AFB, CA
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weather_mapweather_map weather_map


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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.