Friday, September25, 2020
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Marine Weather and Tides
Etna, 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 7:00AMSunset 7:03PM Friday September 25, 2020 5:25 AM PDT (12:25 UTC) Moonrise 3:18PMMoonset 12:00AM Illumination 58% Phase: First Quarter Moon; Moon at 8 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- 255 Am Pdt Fri Sep 25 2020
.small craft advisory in effect through late tonight...
Today..S winds 5 to 10 kt. Waves W 11 ft at 14 seconds. And patchy fog.
Tonight..S winds 5 to 15 kt. Waves nw 10 ft at 13 seconds. Chance of showers.
Sat..NW winds 5 to 10 kt. Waves nw 9 ft at 12 seconds. Slight chance of showers.
Sat night..N winds 10 to 15 kt. Waves nw 8 ft at 11 seconds.
Sun..N winds 10 to 20 kt. Waves N 10 ft at 9 seconds.
Mon..E winds 5 to 10 kt. Waves nw 6 ft at 10 seconds.
Tue..NW winds 5 kt. Waves nw 3 ft at 8 seconds...and W 6 ft at 13 seconds.
PZZ400 255 Am Pdt Fri Sep 25 2020
Synopsis for northern california waters..The large, northwest swell peaked yesterday evening and will gradually wane through the weekend. A weak front will approach the northern waters later today, bringing a brief increase in southerly winds. North winds will increase this weekend, with some gale force winds expected over the outer waters.


7 Day Forecast for Marine Location Near Etna, CA
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location: 41.34, -123.02     debug


Area Discussion for - Medford, OR
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FXUS66 KMFR 251150 AFDMFR

Area Forecast Discussion National Weather Service Medford OR 450 AM PDT Fri Sep 25 2020

.Updated Aviation Discussion.

DISCUSSION. Models continue to show a front moving into the area late today through tonight bringing some breezy to gusty conditions and another round of rainfall. Ahead of the front today, expect breezy south to southwest winds along the coast into across the mountains west of the Cascades with gusty west winds from the Cascades eastward this afternoon and evening. Strongest winds are expected over the mountains in the Cascades and eastward with gusts of 30 to 40 mph and in valley east of the Cascades with gusts of 20 to 30 mph.

Light rain will begin to spread into the coast this morning. Then as the front moves gradually inland this afternoon into tonight, it will bring another round of rain to the area. Light to moderate rain expected at the coast, in the coastal mountains, Umpqua Basin and Southern Oregon Cascades. These areas are expected to see around 0.20 to 0.60 inches with some locally higher amounts possible in the mountains. Light rainfall, generally less than 0.15 inches, is expected in valleys in Jackson, Josephine, western Siskiyou, northern and central Klamath and northwest Lake Counties.

Behind this front, expect cloudy skies and lingering light showers Saturday morning into early to mid Saturday afternoon, especially from the Cascades west. Then models are in good agreement showing showers tapering off by late Saturday afternoon followed by an upper level ridge of high pressure building into the region Saturday night and Sunday.

The upper level ridge is forecast to strengthen Sunday into early next week. This will bring a trend towards much warmer and drier weather with a return to more summer-like weather. A thermal trough will develop along the coast with offshore (easterly to northeasterly winds) developing Saturday night into Sunday, then strengthening Sunday night and Monday. These winds are expected to lower Monday night into Tuesday. However, high pressure will remain in place with warm and dry weather through late this week.

Temperatures are expected to rise into the 90s across most inland valleys west of the Cascades by Monday and in the lower 80s for valleys east of the Cascades. Models and guidance forecast temperature to increase another few degrees on Tuesday with highs in the mid to upper 90s across most western valleys and in the upper 80s across eastern valleys. Additionally, warm temperatures will develop along coast as a result of the offshore easterly winds. Highs in the upper 80s to 90s are expected in the Brookings area Sunday. Then most all the coast will see warm temperatures Monday and Tuesday with highs in the 80s.

Temperatures are forecast o lower slightly late in the week but overall, models indicate that warmer than normal and dry conditions will linger into Friday. At the coast, expect temperatures to lower into the lower to mid 70s by Friday. Also expect southerly winds and areas of low clouds to develop along the coast and over marine waters Thursday night into Friday.


AVIATION. For the 25/12Z TAFs . Along the coast and just offshore. MVFR conditions are expected to be the predominate condition this morning. However could not rule out brief VFR ceilings at North Bend. Ceilings are expected to lower during the day as a front approaches. Confidence on the timing of when ceilings lower to IFR are low to medium, so watch for updates. However confidence is higher the lower conditions will develop. Gusty south winds are expected ahead of the front through this morning, then should gradually decrease and shift southwest as the front moves onshore. IFR and brief MVFR ceilings are expected tonight.

Inland west of the Cascades VFR ceilings should last into the daylight hours for Roseburg and Medford. However mountains could end up being partly obscured after 17z. MVFR ceilings are expected at Roseburg between 0-2Z and lasting through the night. Medford should remain VFR through the TAF period, but could not rule out brief MVFR ceilings after 4z.

East of the Cascades, VFR conditions are expected through the TAF period with gusty southwest winds expected mainly between 20 and 3Z. Could not rule out partial mountain obscurations north and west of Klamath Falls late this afternoon and early evening. -Petrucelli

MARINE. Updated 200 AM PDT Friday 25 September 2020 . Steep, long period west swell will persist through this afternoon. At the same time, moderate south winds will increase and peak late this morning as another front passes through. Conditions should remain small craft most of the time. However there is concern portions of the northern waters could become hazardous late this morning into this evening due to a combination of moderate to strong south winds and steep swell which should begin to diminish this evening. Therefore a Hazardous Seas Warning as been issued for the northern waters. Please see MWWMFR for more details. Winds will continue to diminish tonight, but small craft conditions are expected through tonight. Calmer conditions are expected Saturday, then a thermal trough will develop with north winds increasing late Saturday night through Sunday. There's a chance winds could approach gales by Sunday afternoon and lasting into Sunday night. -Petrucelli

FIRE WEATHER. Updated 2 AM PDT Friday 25 September 2020 .

A front will gradually move into the area today into tonight. This will result in cooler temperatures and breezy to gusty winds ahead of the front across inland areas. Breezy south to southwest winds are expected at the coast and over the ridges west of the Cascades. From the Cascades east though, expect gusty west winds with gusts in the 30 to 40 mph range over the mountains and around 20 to 30 mph in the valleys for these areas. Light rain is expected to move into the coast this morning, then spread into the Umpqua and Southern Oregon Cascades this afternoon. Other areas further inland are expected to see rain later this afternoon into tonight, including across Josephine, Jackson, western Siskiyou, central and northern Klamath and northwest Lake Counties. The best chances for wetting rain are along the coast, coastal mountains and Southern Oregon Cascades as well as into th e Umpqua Basin. Rainfall amounts of 0.20 to 0.60 inches are expected for the coast, coastal mountains and Southern Oregon Cascades with locally higher amounts over the higher mountain. In the Umpqua expect around 0.15 to 0.30 inches of rain. Then most valleys in Jackson, Josephine, western Siskiyou and central/northern Klamath Counties are forecast to see generally less than 0.15 inches of rain.

Saturday will be a transition day with some lingering light showers, mainly from the Southern Oregon Cascades west Saturday morning and early Saturday afternoon, then warming and dry conditions late Saturday.

Strong high pressure is likely to follow with a warming and drying trend from Sunday through Tuesday, with continued very warm temperatures in the mid to late week. High temperatures forecast to be back into the mid 90s in the Rogue valley and near 100 in western Siskiyou county by Monday. With the upper ridge building over the region starting Sunday, a thermal trough will deepen on the southern Oregon coast, with a tight pressure gradient Sunday resulting in strong northeast to east winds to the higher elevations on the southern coastal ranges. Sunday night into Monday, these strong, gusty easterly winds are expected across ridges from the Cascades west with gusty winds and moderate to locally poor recoveries expected.

The thermal trough spreads north later on Monday and into Tuesday with a decreasing pressure gradient resulting in lighter winds. However with high pressure remaining in place and a continued subsidence and prolonged offshore flow, expect poor to moderate recoveries on area ridges and dry daytime humidities into late this week. -CC

MFR WATCHES/WARNINGS/ADVISORIES. OR . None.

CA . None.

Pacific Coastal Waters . Small Craft Advisory until 5 AM PDT Saturday for PZZ350-356-370-376. Hazardous Seas Warning from 11 AM this morning to 8 PM PDT this evening for PZZ350-370.

CC


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 68 mi56 min NNE 1.9 G 2.9 53°F 60°F1018 hPa
HBYC1 - 9418767 - North Spit, CA 75 mi50 min 62°F1018.2 hPa
46244 - Humboldt Bay, North Spit, CA 77 mi30 min 61°F11 ft

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mount Shasta, CA37 mi30 minN 08.00 miFair45°F39°F83%1017.2 hPa

Link to 5 minute data for KMHS

Wind History from MHS (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmNW53CalmCalmCalmCalmCalmCalmCalmNE3CalmNE3NE3CalmCalm
1 day agoCalmCalmCalmCalmCalm34--333Calm334E4CalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalm--33CalmCalmCalmCalmE3CalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Fri -- 12:43 AM PDT     Moonset
Fri -- 01:24 AM PDT     0.18 feet Low Tide
Fri -- 07:07 AM PDT     Sunrise
Fri -- 08:27 AM PDT     5.20 feet High Tide
Fri -- 01:30 PM PDT     3.43 feet Low Tide
Fri -- 04:21 PM PDT     Moonrise
Fri -- 07:07 PM PDT     Sunset
Fri -- 07:18 PM PDT     6.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.20.30.81.82.944.85.25.14.84.33.83.53.53.84.45.15.86.165.44.43.2

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Arcata Wharf
Click for Map
Fri -- 12:44 AM PDT     Moonset
Fri -- 02:31 AM PDT     0.12 feet Low Tide
Fri -- 07:07 AM PDT     Sunrise
Fri -- 09:34 AM PDT     5.27 feet High Tide
Fri -- 02:20 PM PDT     3.54 feet Low Tide
Fri -- 04:20 PM PDT     Moonrise
Fri -- 07:07 PM PDT     Sunset
Fri -- 08:19 PM PDT     6.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.90.80.20.20.71.72.83.94.75.25.24.94.43.93.63.64.14.85.66.26.66.55.94.8

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 Medford, OR
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