Saturday, March28, 2020
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Marine Weather and Tides
Happy Camp, 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 7:03AMSunset 7:38PM Saturday March 28, 2020 1:37 PM PDT (20:37 UTC) Moonrise 8:23AMMoonset 10:56PM Illumination 23% 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
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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 837 Am Pdt Sat Mar 28 2020
Today..S winds 10 to 15 kt. Waves nw 4 ft at 8 seconds. Chance of showers.
Tonight..S winds 10 to 15 kt. Waves sw 5 ft at 5 seconds. Showers likely.
Sun..SW winds 5 to 15 kt. Waves sw 5 ft at 8 seconds. Chance of showers.
Sun night..S winds 10 to 20 kt. Waves W 4 ft at 8 seconds.
Mon..SW winds 5 to 15 kt. Waves nw 8 ft at 11 seconds.
Tue..NW winds 5 to 15 kt. Waves nw 9 ft at 12 seconds.
Wed..N winds 5 to 15 kt. Waves nw 7 ft at 11 seconds.
PZZ400 837 Am Pdt Sat Mar 28 2020
Synopsis for northern california waters..Light to moderate southerly winds will last through tonight, then switch to light southwest to west on Sunday. A small, mid period northwest swell and a small long period southerly swell will continue for the weekend, with low seas overall until the next northwest swell begins to fill in by Tuesday.


7 Day Forecast for Marine Location Near Happy Camp, CA
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location: 41.5, -123.35     debug


Area Discussion for - Medford, OR
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FXUS66 KMFR 281555 AFDMFR

Area Forecast Discussion National Weather Service Medford OR 855 AM PDT Sat Mar 28 2020

DISCUSSION. We haven't made any changes to the forecast for today. An upper low near 42N and 130W will open up into a trough as it heads southeast toward northern California today. Current KMAX radar imagery is showing some light returns over the CWA with measurable rainfall overnight primarily along the coast (mostly 0.10-0.25 of an inch) with a few clicks here and there inland west of the Cascades. Red Mound RAWS, just above Brookings, at around 1700 feet, and also where it seemingly rains at the drop of a hat, measured 0.55 of an inch. Here at the office in Medford, just a few sprinkles so far that have barely been able to wet the ground.

As the upper low/trough gets closer, expect an uptick in coverage of showers this afternoon. The focus again should be in the coast ranges, the mountains of Siskiyou County and up along the Siskiyous/Cascades. While just about everywhere from the Cascades west stands a good chance at getting wet today, there'll probably be a few spots that get skipped over. Some showers will also develop late this afternoon and move out over the east side this evening/tonight. While the atmosphere does destabilize some, we don't think it will be enough for lightning. With snow levels up around 5000 feet, we're not expecting much impact in terms of snow/winter travel with roadways mostly wet during the day. -Spilde

AVIATION. For the 28/12Z TAF Cycle . A showery pattern will bring a mix of mainly VFR and MVFR ceilings through Saturday night with areas of obscured terrain. Freezing levels will be 5000 to 5500 feet with showers most numerous near the coast and secondarily, over the higher terrain.

MARINE. Updated 800 AM PDT Saturday 28 March 2020 . Active weather will bring periods of increased southerly winds through Sunday morning. Winds will reach low end advisory levels and seas will be wind driven and steep through then, especially north of Gold Beach. Conditions will subside below advisory levels Sunday afternoon. Swell will begin increasing Sunday night and another front will move onshore Sunday night into Monday. High pressure will build offshore Monday night into Tuesday. Northwest swell will peak Tuesday.

PREV DISCUSSION. /Issued 333 AM PDT Sat Mar 28 2020/

DISCUSSION . The latest satellite image shows a weak upper low near 130W and 43N. Plenty of clouds are out ahead of the upper low and are moving from southwest to northeast into our area. Precipitation is just about everywhere west of the Cascades, but this far has been light and should remain that way through the morning hours. This afternoon, the past few runs of the high res HRRR has been showing an uptick in coverage precipitation both west and east of the Cascades. This makes sense given the aforementioned upper low will be moving towards the Oregon/California coast. Despite the increasing coverage of precipitation, amounts are not expected to be significant. Snow levels will be around 5000 feet today. Since precipitation is expected to be light to occasionally moderate along with warmer road temperatures, they should remain wet.

The upper low will weaken as it moves towards our area tonight with a continuation of light to occasionally moderate precipitation. Snow levels later tonight will dip down to be around 4000 feet.

Sunday will be wet with showers just about everywhere as the upper trough moves overhead. Precipitation amounts are expected to be highest along the coast, coastal mountains and Douglas County and mainly during the morning. Precipitation will gradually decrease Sunday afternoon as the upper trough axis moves east of the Cascades. Snow levels Sunday will be around 4500 feet, but once again precipitation will be mainly light to occasionally moderate, especially in the morning. Thus, any road snow will be confined to the higher elevations (Crater Lake and Diamond Lake), even then any snow should be mostly roadside slush and mainly during the morning hours Sunday.

The upper trough will move east of the area Sunday night and precipitation will gradually diminish, but it may not go away completely as we'll remain in a moist west flow as another upper low slides south over central Vancouver Island and an upper jet moves into the area. This upper jet will remain over the area and will provide some additional energy for moderate to occasionally heavy precipitation on Monday, heaviest along the coast, coastal mountains and Cascades courtesy of a moist westerly flow. Snow levels Monday will rise to around 5500 feet as a milder air mass moves into the area. This will still put the Crater Lake area and highways 138 and 230 near Diamond Lake at risk for some road snow. Road snow accumulations should be mitigated due to a stronger March sun and warmer road temperatures. However since precipitation is expected to be moderate to heavy at times, it may be enough to result in slushy or snow covered roads at times in the above mentioned areas.

Also of note, gusty winds are expected east of the Cascades Monday as 700 mb winds between 50-55 kts moves overhead. Right now, we don't think they will reach advisory criteria, but it's something that we'll need to keep a watch on.

Precipitation will gradually diminish Monday night into Tuesday morning with most centered along the coast, coastal mountains and Cascades. Snow levels Monday night will drop down between 4500 and 5000 feet. Tuesday 500 mb heights will gradually rise as the upper low that was in southern Vancouver Island scoots east over southern Alberta and precipitation mainly along the Cascades and coast range will diminish further. After Tuesday, there is increasing evidence among the operational models and ensembles showing dry and mild weather returning to the area Wednesday and possibly lasting into next weekend. The operational ECMWF and GFS show upper ridging building into the area Wednesday through Thursday, briefly weakening as very weak warm front moves north of the area Friday followed by stronger upper ridge next weekend. The ensemble members all point to a drier solution with the majority of the individual ensemble members showing no measurable rainfall. Therefore adjustments were made to remove any mention of precip and adjusting max temperatures higher from next Wednesday through next weekend. -Petrucelli

AVIATION . For the 28/06Z TAF Cycle . A showery pattern will bring a mix of mainly VFR and MVFR ceilings through Saturday night with areas of obscured terrain. Freezing levels will be around 5000 to 5500 feet with showers most numerous near the coast and secondarily, over the higher terrain. -DW

MARINE . Updated 230 AM PDT Saturday 28 March 2020 . Several weak to moderate fronts will move onshore through Sunday morning, bringing periods of increased southerly winds. Winds will reach low end advisory levels and seas will be wind driven and steep into Sunday morning, especially north of Gold Beach. Conditions will subside below advisory levels Sunday afternoon. Swell will begin increasing Sunday night and another front will move onshore Sunday night into Monday. High pressure will build offshore Monday night into Tuesday. Northwest swell will peak Tuesday.

MFR WATCHES/WARNINGS/ADVISORIES. OR . None.

CA . None.

Pacific Coastal Waters . Small Craft Advisory from 11 AM this morning to 11 AM PDT Sunday for PZZ356-376. Small Craft Advisory until 11 AM PDT Sunday for PZZ350-370.

MAS/MND/MAP/JRS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 47 mi49 min S 12 G 15 50°F 51°F1021.1 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 60 mi37 min S 16 G 18 51°F 51°F1021.3 hPa (-0.5)44°F
46244 - Humboldt Bay, North Spit, CA 68 mi37 min 51°F4 ft

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montague Siskiyou County Airport, CA51 mi44 minSSW 710.00 miLight Rain51°F34°F52%1020.2 hPa

Link to 5 minute data for KSIY

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Last 24hrCalm4W5--NW10NW6N4N9N7N5N6NE4S4CalmCalmE4NE3NE4N3N3SW5CalmS11S7
1 day agoCalmE5CalmN5N13N12N8N8N8N7NE4SW5CalmN3NE4NE4CalmCalmCalmCalmCalmCalmCalm3
2 days ago3N10NW10NE13N8NW8N5N13N8N3N3NE3CalmCalmCalmCalmCalmCalmCalmCalmCalm3CalmCalm

Tide / Current Tables for Crescent City, California
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Crescent City
Click for Map
Sat -- 02:22 AM PDT     6.42 feet High Tide
Sat -- 07:05 AM PDT     Sunrise
Sat -- 09:04 AM PDT     0.58 feet Low Tide
Sat -- 09:26 AM PDT     Moonrise
Sat -- 03:24 PM PDT     5.16 feet High Tide
Sat -- 07:38 PM PDT     Sunset
Sat -- 08:46 PM PDT     2.40 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.95.96.46.35.64.53.11.80.90.60.81.62.73.84.75.15.14.63.83.12.52.42.83.5

Tide / Current Tables for Crescent City, California (2) (expired 1989-12-31)
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Crescent City
Click for Map
Sat -- 02:21 AM PDT     6.44 feet High Tide
Sat -- 07:05 AM PDT     Sunrise
Sat -- 09:04 AM PDT     0.58 feet Low Tide
Sat -- 09:26 AM PDT     Moonrise
Sat -- 03:23 PM PDT     5.19 feet High Tide
Sat -- 07:38 PM PDT     Sunset
Sat -- 08:46 PM PDT     2.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.95.96.46.35.64.53.11.80.90.60.81.62.73.84.75.15.14.63.93.12.62.42.83.5

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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Wind Forecast for Medford, OR (16,3,4,5)
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Ground Weather Radar Station Medford, OR
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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.