Saturday, September21, 2019 L-36.com


Marine Weather and Tides
Caspar, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:57AMSunset 7:15PM Friday September 20, 2019 9:33 PM PDT (04:33 UTC) Moonrise 10:12PMMoonset 12:09PM Illumination 55% Phase: Third Quarter Moon; Moon at 22 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- 849 Pm Pdt Fri Sep 20 2019
.small craft advisory in effect until 3 am pdt Saturday...
Tonight..N winds 15 to 25 kt...easing to 5 to 15 kt. Waves nw 8 ft at 8 seconds.
Sat..NW winds 10 to 20 kt. Waves nw 6 ft at 7 seconds...and nw 3 ft at 14 seconds.
Sat night..N winds 10 to 20 kt. Waves nw 7 ft at 7 seconds... And nw 3 ft at 15 seconds.
Sun..NW winds 10 to 15 kt. Waves N 6 ft at 6 seconds...and nw 4 ft at 14 seconds.
Sun night..NW winds 10 to 20 kt. Waves N 8 ft at 9 seconds... And sw 2 ft at 18 seconds.
Mon..N winds 15 to 25 kt. Waves nw 10 ft at 9 seconds...and nw 4 ft at 15 seconds.
Tue..N winds 15 to 25 kt. Waves nw 10 ft at 9 seconds.
Wed..N winds 15 to 25 kt. Waves N 8 ft at 10 seconds.
PZZ400 849 Pm Pdt Fri Sep 20 2019
Synopsis for northern california waters.. High pressure offshore coupled with a trough near the coast will maintain fresh to strong northerly breezes and steep waves through Saturday. Northerly winds will ease Saturday night and Sunday, primarily north of cape mendocino, as a trough approaches from the nw. Conditions will start to deteriorate again Sunday night after this trough passes over the area. Gales are expected, primarily over the outer waters, Monday through Wednesday.


7 Day Forecast for Marine Location Near Caspar, CA
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location: 39.35, -123.83     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 202128
afdeka
area forecast discussion
national weather service eureka ca
228 pm pdt Fri sep 20 2019

Synopsis Warm and dry weather will continue across the region
through Saturday. Light showers will be possible over del norte
and northern humboldt county on Sunday, followed by another period
of warm and dry conditions through most of next week. A storm
system late in the week may bring a return of cooler and wetter
weather.

Discussion After early morning low cloudiness and fog in some
of the interior valleys, skies have become mostly sunny across the
area with some patches of high clouds speeding S over the
interior. Temperatures are near normal across most of the area. Nw
to N winds have been increasing along the redwood coast with some
gusts to 25 mph at crescent city.

Under mostly clear skies, expect another night of good radiational
cooling tonight. Have leaned toward the low end of MOS guidance
with temperatures, but still not expecting any frost. Temperatures
will warm across the interior on Saturday, with readings maxing
out above 90 in some of the S valleys.

Clouds will be on the increase Saturday night ahead of a weak
frontal system dropping in from the n. The bulk of the rainfall
with this system will remain N of the area, and the rains will
become more scattered as they shift s. There may be some weak
instability over the N interior late on Sunday afternoon into
Sunday evening, but don't feel there is much chance of thunder.

Due to the progressive nature of this system, what rains do occur
will rapidly come to an end Sunday evening.

An upper ridge will build over the area early next week, with
warm to hot temperatures returning to the interior. There are
indications that periods of offshore flow will occur early next
week, and this could bring fairly warm temperatures to some
redwood coast areas as well.

Long range models are still in good agreement that a large scale
trough will dig over the W portion of the us late next week. This
will bring cooler temperature and the possibility of more
precipitation. Sec

Aviation Vfr conditions will prevail through the forecast period
as an offshore ridge transitions eastward over the pacific nw. This
will promote air mass drying and an offshore flow through Saturday.

Patches of low clouds will still be possible, primarily over the
interior valleys and around humboldt bay, during the late night and
early morning hours.

Marine High pressure offshore coupled with a trough near the
california coast will maintain fresh to strong northerly breezes as
well as steep waves tonight. The axis of strongest winds should
shift outside 10nm on Saturday, however high resolution models
indicate north winds ramping up again around pt st george and cape
mendocino in the afternoon and evening. Also, steep seas will be
borderline for an advisory inside 10nm on Saturday. For now will
let the advisory for the inner waters expire late tonight.

Northerly winds will ease up Saturday night into Sunday morning,
primarily north of CAPE mendocino, as a trough approaches from the
nw. This lull will be short-lived. Guidance continues to indicate
north winds ramping up again Sunday night in the wake of this
trough. How quickly winds increase is still not certain. Right now,
it appears to be a gradual increase Sunday night.

The potential for gale force conditions will increase on Monday and
then persist through mid next week. The highest probability for
gales appears to be in the outer waters, based on the coarse
resolution of the gfs, ECMWF and nbm. Gale conditions will be
possible inside 10nm as well, primarily around pt st george and cape
mendocino. The main threat for the inner waters appears to be large
steep seas generated from the strong northerlies outside 10nm. Steep
seas may hit 18 to 20 feet outside 10nm and 12 to 15 ft inside 10nm
around mid next week if gales last for 3 consecutive days. For now
will call attention to this threat in a weather story graphic.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters...

small craft advisory until 3 am Saturday for pzz450-455.

Small craft advisory until 9 pm Saturday for pzz470.

Small craft advisory until 3 am Monday for pzz475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46014 - PT ARENA - 19NM North of Point Arena, CA 11 mi24 min NW 19 G 23 61°F 56°F1013.7 hPa60°F
ANVC1 - 9416841 - Arena Cove, CA 31 mi46 min WSW 1.9 G 4.1 59°F 53°F1014.4 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA36 mi98 minS 310.00 miFair73°F46°F40%1012.9 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN4CalmCalm3E4CalmNW104NE5S3Calm
1 day agoCalmN4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm--CalmCalmCalmE5N5N6NW12NW7W43Calm
2 days agoW3CalmSE3SE3CalmN8CalmCalmCalmSW3CalmCalmSE5CalmNW3NW13
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Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
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Sat -- 05:44 AM PDT     3.93 feet High Tide
Sat -- 07:01 AM PDT     Sunrise
Sat -- 10:24 AM PDT     3.10 feet Low Tide
Sat -- 02:10 PM PDT     Moonset
Sat -- 04:25 PM PDT     5.33 feet High Tide
Sat -- 07:14 PM PDT     Sunset
Sat -- 07:43 PM PDT     Last Quarter
Sat -- 11:44 PM PDT     0.63 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.72.433.53.93.93.83.53.33.13.13.43.94.555.35.34.94.13.121.20.7

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Sat -- 02:38 AM PDT     0.72 knots Max Flood
Sat -- 06:11 AM PDT     -0.00 knots Slack
Sat -- 07:01 AM PDT     Sunrise
Sat -- 08:24 AM PDT     -0.54 knots Max Ebb
Sat -- 11:15 AM PDT     0.00 knots Slack
Sat -- 02:11 PM PDT     Moonset
Sat -- 02:29 PM PDT     0.52 knots Max Flood
Sat -- 05:07 PM PDT     -0.00 knots Slack
Sat -- 07:14 PM PDT     Sunset
Sat -- 07:43 PM PDT     Last Quarter
Sat -- 08:45 PM PDT     -1.10 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.50.70.70.60.40.1-0.3-0.5-0.5-0.3-0.10.10.30.50.50.30-0.3-0.7-1-1.1-0.9-0.6

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 Eureka, CA (0,6,7,8)
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Ground Weather Radar Station Eureka, CA
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Disclaimer:
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 numerious 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.