Monday, April19, 2021
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Marine Weather and Tides
Rancho Tehama Reserve, CA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:21AMSunset 7:51PM Monday April 19, 2021 3:19 PM PDT (22:19 UTC) Moonrise 10:32AMMoonset 1:16AM Illumination 55% 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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PZZ455 Cape Mendocino To Pt Arena Out 10 Nm- 224 Pm Pdt Mon Apr 19 2021
.small craft advisory in effect through Tuesday morning...
.gale warning in effect from Tuesday morning through Tuesday evening...
Tonight..NW winds 15 to 25 kt with localized gusts to around 35 kt. Waves nw 7 ft at 7 seconds...and W 3 ft at 11 seconds. Patchy fog.
Tue..NW winds 20 to 30 kt with gusts to around 40 kt. Waves nw 9 ft at 8 seconds...and W 4 ft at 13 seconds. Patchy fog.
Tue night..NW winds 20 to 30 kt. Waves nw 10 ft at 9 seconds...and W 4 ft at 12 seconds.
Wed..NW winds 15 to 25 kt. Waves N 10 ft at 9 seconds.
Wed night..N winds 10 to 20 kt. Waves N 9 ft at 9 seconds... And nw 3 ft at 11 seconds.
Thu..NW winds 10 to 20 kt. Waves N 7 ft at 8 seconds...and nw 3 ft at 18 seconds.
Fri..NW winds 5 to 15 kt. Waves N 6 ft at 6 seconds.
Sat..S winds 5 to 10 kt. Waves W 4 ft at 10 seconds...and S 3 ft at 19 seconds.
PZZ400 224 Pm Pdt Mon Apr 19 2021
Synopsis for northern california waters..Small craft northerlies will expand from south of cape mendocino to all waters by this evening. Winds will strengthen further across the outer waters and southern inners to gale force during Tuesday, with gusty north winds and steep hazardous seas persisting through mid week.


7 Day Forecast for Marine Location Near Rancho Tehama Reserve, CA
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location: 40, -122.37     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 192129 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 229 PM PDT Mon Apr 19 2021

SYNOPSIS. Dry and unseasonably warm again today. Cooler Tuesday with the chance of mainly mountain showers and thunderstorms. A few showers possible Wednesday in the Sierra south of Tahoe. Otherwise dry and warmer weather returns through the end of the week. Chance of precipitation returns this weekend.

DISCUSSION. High pressure is beginning to break down today over Northern California due to a trough moving through the central US. However, pressure will remain high enough for another day of well above normal daytime temperatures for most of the CWA. Early afternoon temperatures are a few degrees cooler to this time yesterday for most Valley locations due to a modest onshore flow. The winner though is Travis Air Force Base at 18 degrees cooler then yesterday with an observation of only 69 degrees. Overall, Valley temperatures are still forecast to peak in the mid to upper 80s which is still 10 to 20 degrees above the daily normal.

Ensemble guidance continues to bring a trough through the area tomorrow, slowly moving to our southeast through Wednesday. This will bring cooler temperatures (upper 70s to low 80s in the Valley) as well as a chance of isolated showers and thunderstorms tomorrow, mainly to the mountains and foothills including the Sierra Nevada, southern Cascades, and Coastal Range. However, latest guidance continues to show the trough oriented a bit more to the west than previous runs. This combined with sufficient forecast CAPE values of 200-800 J/kg and PWATS > 0.5 inch could produce a few isolated showers or thunderstorms moving off of the mountains and into the Sacramento Valley. The main threats with any thunderstorm are small hail, brief heavy rainfall, gusty winds, and lightning. Although, HREF is indicating the potential for above 0.5 inch of rain in one hour over the Sierra foothills with stronger cells, signal remains that amounts should remain below 1 inch per hour, so no debris flow impacts are expected to burn scars.

Shower and thunderstorm chances continue for Wednesday, mainly for mountain areas along and south of I-80. Ensembles still uncertain about exact location of the trough to our southeast on Wednesday, so confidence in thunderstorms is lower.

Gusty north winds will also accompany the trough tomorrow and Wednesday for the northern Sacramento Valley. Strongest gusts are expected tomorrow with gusts up to 25 to 35 mph. Locally breezy downslope winds pick up overnight tomorrow night in the Sierra before gusty winds return to the northern Sacramento Valley again Wednesday. Conditions remain extremely dry in this region of the Valley with minimum daytime RH values forecast in the single digits and teens. This combined with gusty winds could create locally elevated fire weather concerns through Wednesday. It is recommended to avoid outdoor activities that could create sparks.

Ridging returns behind the trough passage bringing dry weather and warmer temperatures. Valley highs are forecast for the mid to upper 80s Wednesday and Thursday. -HEC

EXTENDED DISCUSSION (Friday THROUGH Monday). Long range forecast has little change. Upper level ridging returns for Thursday and Friday which will bring the return of warm and dry weather to the region. A pattern change still looks likely for the weekend and into early next week, as ensemble guidance alludes to a trough moving towards the region. The deterministic models are still in agreement, though there is still quite a bit of uncertainty this far out. Will continue to advertise cooler and more seasonal weather and some POP over interior NorCal.

AVIATION. VFR conditions next 24 hours, except for local MVFR conditions possible vicinity showers and isolated thunderstorms mainly over the mountains after 12Z- 18Z Tuesday. Local northerly wind gusts 20-30 kts develop over the northern Sacramento Valley by 16Z-18Z Tuesday. Local southwest wind gusts to 25 kts vicinity Delta tonight.

STO WATCHES/WARNINGS/ADVISORIES. None.


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Red Bluff, Red Bluff Municipal Airport, CA12 mi25 minVar 610.00 miFair86°F36°F17%1014.4 hPa

Link to 5 minute data for KRBL

Wind History from RBL (wind in knots)
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Last 24hrNW11
G17
N7E4SE3SW5W8SE3N3CalmCalmW3NW3NW4NW4NW4NW5N4N63SW3E5E5SE86
1 day agoN8NW10NW7W6W5W6NE3N3NW3NW5NW5NW6NW6NW7NW9NW8NW9NW9N86N7N8NW10N7
2 days agoN11N10NW7NW8NW5NW6N7NW6NW7NW7NW7NW7NW6N6NW6NW6N5N12
G17
N10NW6NW8N11N12NW10

Tide / Current Tables for Westport, California
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Westport
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Mon -- 02:20 AM PDT     Moonset
Mon -- 03:56 AM PDT     4.68 feet High Tide
Mon -- 06:31 AM PDT     Sunrise
Mon -- 11:24 AM PDT     0.20 feet Low Tide
Mon -- 11:39 AM PDT     Moonrise
Mon -- 07:30 PM PDT     4.00 feet High Tide
Mon -- 07:57 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.63.94.34.64.74.543.12.11.20.60.20.30.61.21.92.63.23.7443.83.63.4

Tide / Current Tables for Fort Bragg Landing, California
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Fort Bragg Landing
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Mon -- 02:20 AM PDT     Moonset
Mon -- 03:57 AM PDT     4.78 feet High Tide
Mon -- 06:31 AM PDT     Sunrise
Mon -- 11:26 AM PDT     0.20 feet Low Tide
Mon -- 11:40 AM PDT     Moonrise
Mon -- 07:31 PM PDT     4.10 feet High Tide
Mon -- 07:57 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.63.94.34.64.84.64.13.22.21.30.60.20.30.61.21.92.63.33.84.14.13.93.73.4

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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