Sunday, September23, 2018 L-36.com


Marine Weather and Tides
Weaverville, CA

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:57AMSunset 7:05PM Sunday September 23, 2018 5:02 AM PDT (12:02 UTC) Moonrise 5:52PMMoonset 4:25AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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PZZ410 730 pm pdt Tue mar 13 2018 a marine weather statement has been issued for the following areas... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay bar... At 729 pm pdt, doppler radar indicated a shower, capable of producing winds to around 30 knots. This shower was located 9 nm north of cape mendocino, moving northeast at 20 knots. Precautionary/preparedness actions... Water spouts are possible along with stronger Thunderstorms...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. Mariners can expect gusty winds to around 30 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4080 12411 4080 12418 4075 12419 4073 12423 4070 12421 4068 12422 4070 12427 4071 12427 4065 12431 4063 12429 4063 12424 4062 12426 4063 12432 4047 12439 4057 12459 4095 12437 4086 12417 4076 12423 4085 12416 4082 12409
PZZ400 255 Am Pdt Sun Sep 23 2018
Synopsis for northern california waters..Northerly winds will continue to strengthen over the outer waters through Monday as steep seas build in response. Stronger winds and steeper seas will also spread into the nearshore waters by Sunday morning. Winds will decrease late Monday into Tuesday.


7 Day Forecast for Marine Location Near Weaverville, CA
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location: 40.78, -122.83     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 231135
afdeka
area forecast discussion
national weather service eureka ca
435 am pdt Sun sep 23 2018

Synopsis Cooler weather in the interior will continue today.

Warmer weather is expected Monday through Wednesday.

Discussion Stratus developed overnight along the north coast
and in the adjacent river valleys. Stratus appeared to be minimal
south of the CAPE along the mendocino coast. Brisk northerly winds
later today will scour out the stratus and sunshine will abound.

Temperatures will not cool much today compared to yesterday in
the interior. Pleasant readings in the mid 70s to mid 80s are
expected. Coastal areas should drop a few degrees as gusty
northerly breezes ramp up this afternoon.

An upper ridge will build over the area on Monday and hold through
Wednesday. Temperatures across the interior will warm up again.

Highs in the lower to mid 90s are probable for the interior
valleys. A few interior valley sites will probably reach the
upper 90s to around 100f on Tuesday and Wednesday. Coastal areas
will see warmer temperatures as well early to mid next week.

Coastal highs in the lower to mid 70s are expected.

The models continue to bring an upper low toward the california
coast late in the week and next weekend. Cooler weather is likely
next weekend. The models are depicting light precip next weekend.

This may be overdone and for now will maintain near normal precip
chances around 5 to 10%.

Aviation Stratus is more prevalent this morning compared to
yesterday morning especially within the eel river valley. Both acv
and cec have experienced stratus this morning and will remain
MVFR ifr through late this morning before the stratus clears.

Northerly winds along the coast will increase later this morning and
persist through this evening. Around sunset this may lead to reduced
visibilities due to lofted salt particles at coastal terminals. This
evening as the boundary layer decouples, wind shear may be a concern
for a few hours. High resolution guidance indicate that stratus will
be hard to come by this evening so all terminals may remainVFR
tonight into tomorrow morning. Wci

Marine Northerlies will continue to increase today, with gale
force gusts over the outer waters by late this morning. Have added
the southern outer waters to the gale warning due to the large
steep seas and marginal gale force wind gusts that can be expected
across primarily the northwestern half of the zone. The strong
northerlies will decrease by Tuesday and remain fairly light
through the remainder of the forecast period with the strongest
winds over the NW corner of the forecast area.

Steep short period northerly wind waves will persist through mid
week. In addition, a NW swell currently at a period of around 8
seconds will continue into early next week. A very small, periodic
sw swell at around 16 seconds will continue as well. Wci & sec

Fire weather Cooler temperatures and higher rh's are expected
to continue today. A warming and drying trend will commence
tonight and Monday as offshore flow increases. Gusty northeast
and east winds with low rh's are expected tonight over the exposed
ridges of zones 203 and 204. For now will maintain a headline in
the fire weather planning forecast to call attention to possible
critical fire weather conditions tonight and Monday. The offshore
flow and poor rh recoveries will persist on Tuesday and Wednesday.

Otherwise, above normal temperatures and low rh's are expected
each day through much of next week before a cooling trend arrives
toward the end of the week into next weekend.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters...

small craft advisory from 9 am this morning to 3 am pdt Tuesday
for pzz450. Small craft advisory until 3 pm pdt this afternoon
for pzz470- 475. Gale warning from 3 pm this afternoon to 3 am pdt
Tuesday for pzz470. Small craft advisory until 9 am pdt Monday
for pzz455. Gale warning from 3 pm this afternoon to 9 pm pdt
Monday for pzz475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 74 mi86 min NNW 7 G 8 54°F 53°F1017.1 hPa
46244 - Humboldt Bay, North Spit, CA 81 mi32 min 55°F7 ft

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from O54 (wind in knots)
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SW7S7S5CalmCalmCalmCalmCalmCalmNE3CalmCalmCalmCalmS5S3
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CalmSW11S4N3CalmCalmCalmNE3NE3CalmCalmCalmCalmCalmCalmCalmCalmS5

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Mad River Slough, Arcata Bay, Humboldt Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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wmap_P
GOES 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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Eureka, CA (8,2,3,4)
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Ground Weather Radar Station Medford, OR
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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.