Thursday, May25, 2017 L-36.com


Marine Weather and Tides
Moorefield, NE

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:14AMSunset 9:06PM Thursday May 25, 2017 11:12 AM CDT (16:12 UTC) Moonrise 5:29AMMoonset 7:57PM Illumination 0% Phase: New Moon; Moon at 0 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ410 1227 pm pdt Wed apr 19 2017 a marine weather statement has been issued for the following areas... Coastal waters from cape mendocino to pt. Arena ca out 10 nm... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay bar... Waters from cape mendocino to pt. Arena ca from 10 to 60 nm... Waters from pt. St. George to cape mendocino ca from 10 to 60 nm... Scattered Thunderstorms will continue to develop through 3 pm. The main storm hazards will be dangerous cloud to water lightnig...wind gusts to 40 knots or more...small hail...and waterspouts. 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.ground 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 4174 12417 4156 12410 4150 12398 4153 12407 4154 12408 4089 12413 4076 12423 4087 12414 4085 12409 4083 12408 4065 12431 4060 12416 4051 12413 4063 12432 4043 12441 4044 12581 4129 12555 4168 12568 4178 12579
PZZ400 840 Am Pdt Thu May 25 2017
Synopsis for northern california waters..Strong N winds and large steep seas will begin to diminish today through tonight. Lighter winds and lower seas are expected for Friday through Sunday. N winds will increase again by Monday.

7 Day Forecast for Marine Location Near Mountain Gate, CA
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location: 40.77, -122.34     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 251502
afdsto
area forecast discussion
national weather service sacramento ca
802 am pdt Thu may 25 2017

Synopsis
Cooling continues into Friday with near to below normal
temperatures. Slow warming trend this weekend into early next
week. Isolated afternoon showers or thunderstorms possible over
the northern sierra through the weekend. Afternoon thunderstorm
threat spreading to northern mountains early to middle of next
week.

Update (8:02 am pdt)
Lower level onshore flow from the southwest continues this morning
bringing marine clouds and breezy cool winds. Pressure gradient
trends are dropping slightly this morning, which is resulting in
slightly lower wind speeds at travis afb and in the sacramento
area as compared to overnight. Fort ord profiler continues to show
a somewhat deep marine layer, which in combination with the lower
level orientation of the winds, will continue to bring some clouds
into the area ending by early afternoon.

Forecast continues to be on track; no changes made.

Discussion
Upper trough axis now stretching across northern california has
deepened the marine layer to near 3000 feet this morning. Delta
breeze continues strong with gusts to over 30 knots at travis afb.

Marine stratus has already moved through the delta with patchy low
clouds being reported at the sacramento airport. Much of the
sacramento region will likely wake up to low clouds this morning.

Meanwhile, just about all areas seeing cooler temperatures this
morning with stations in the central sacramento and northern san
joaquin valleys showing over ten degrees of cooling compared to
Wednesday morning. Cooler airmass will bring still cooler high
temperatures today down to near or a little below normal for this
time of year. Upper troughing remains across northern california
on Friday so not expecting much change in overall temperatures or
marine layer with morning stratus likely again through the delta
and sacramento region. GFS and NAM models both showing some
instability over the northern sierra in the afternoon and evening
hours with GFS painting in some precipitation south of about
tahoe. Will therefore keep a slight threat of afternoon and
evening thunderstorms in the forecast for this region. Upper ridge
pushes back over the west coast on Saturday bringing the start of
a warming trend. Lighter onshore flow and a squashed marine layer
will likely keep morning stratus from making it past the delta.

Gfs showing some instability over the northern sierra in the
afternoon and evening so left in slight threat of thunderstorms
there. Warming continues on Sunday under upper ridging. Daytime
highs are likely to reach several degrees above normal. Enough
southerly flow and instability to keep afternoon thunderstorm
threat over the northern sierra.

Temperatures are running much cooler this evening at 6 to 20
degrees cooler. The marine layer has increased to around 2500 feet
this evening and the likelihood of marine stratus spreading into
the southern sacramento valley has increased. Breezy conditions
for parts of the sacramento valley are expected through at least
midnight if not longer. Temperatures will be even cooler for
Thursday ranging from the mid 70s to mid 80s in the central valley
with parts of the delta likely to only warm into the upper 60s.

The trough will deepen overnight bringing more synoptic cooling
and linger through Friday so not much change is expected in
temperatures between the two days. A deep marine layer is expected
Thursday night and may lead to more low clouds spreading into the
interior by Friday morning. The latest NAM is indicating isolated
convective activity along the northern coastal range each of the
next two days while the GFS is dry on Thursday and indicates some
possible activity along the crest and over the northern mountains.

.Extended discussion (Monday through Thursday)
hot weather continues into early next week as strong ridging
remains over the area. Highs for memorial day will top out near
the century mark across the northern sac valley, low to mid 90s
elsewhere in the valley and 60s-70s in the mountains. Those with
outdoor plans should prepare accordingly for the heat! Tuesday
will also be hot, perhaps a degree or two warmer than Monday.

Ridge begins to break down and shift to the east by Wednesday as a
weak trough approaches the west coast. This will start a cooling
trend that may continue through the end of the week. Enough
instability present each afternoon evening for a few thunderstorms
to fire across higher elevations. Have continued to mention in the
forecast but confidence remains low given subtle model
differences at this time.

Ceo

Aviation
Vfr conditions for the next 24 hour period. Gusts to 30 kts in the
delta and up to 25 kts for sacramento area tafs. Morning stratus
intrusion should diminish with cloud deck becoming few scattered
by this afternoon. Wind gusts over the sierra could reach 20 kts
this afternoon.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 99 mi42 min N 7 G 9.9 49°F 57°F1009.3 hPa

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Redding Municipal Airport, CA1164 mi19 minS 610.00 miFair65°F48°F56%1005.3 hPa

Wind History from RDD (wind in knots)
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Last 24hr456S5SW11
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1 day ago3N65W4SW6SW6--S6S6S9S6S5CalmNE3N3NW4CalmNW4CalmCalmCalmN3CalmS5
2 days agoN7NE7NW6Calm4W663SW3SW4SW3CalmN4N3--CalmN3NW4CalmN4NE3N3N34

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Arcata Wharf
Click for Map
Thu -- 12:12 AM PDT     7.86 feet High Tide
Thu -- 05:50 AM PDT     Sunrise
Thu -- 06:07 AM PDT     Moonrise
Thu -- 07:04 AM PDT     -1.51 feet Low Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 01:31 PM PDT     5.93 feet High Tide
Thu -- 06:52 PM PDT     1.77 feet Low Tide
Thu -- 08:36 PM PDT     Sunset
Thu -- 08:36 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.87.66.54.72.60.6-0.9-1.5-1.10.21.93.655.85.95.24.132.11.82.33.65.26.6

Tide / Current Tables for Eureka Slough Bridge, Humboldt Bay, California
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Eureka Slough Bridge
Click for Map
Thu -- 05:50 AM PDT     Sunrise
Thu -- 06:07 AM PDT     Moonrise
Thu -- 06:29 AM PDT     -1.64 feet Low Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 01:16 PM PDT     6.30 feet High Tide
Thu -- 06:17 PM PDT     1.70 feet Low Tide
Thu -- 08:36 PM PDT     Sunset
Thu -- 08:36 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.47.86.34.11.7-0.3-1.5-1.5-0.612.74.45.76.36.15.13.72.51.71.92.94.46.17.5

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Sacramento, CA (12,3,4,5)
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Ground Weather Radar Station Beal AFB, CA
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weather_mapweather_map weather_map

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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.