Saturday, February24, 2018 L-36.com


Marine Weather and Tides
Hornbrook, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 6:50AMSunset 5:57PM Saturday February 24, 2018 7:28 PM PST (03:28 UTC) Moonrise 12:21PMMoonset 2:21AM Illumination 74% Phase: Waxing Gibbous; Moon at 10 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
PZZ330 1126 Pm Pdt Fri Aug 9 2013
.thunderstorms over the waters... Thunderstorms over the waters have weakened but isolated storms will continue overnight. Mariners can expect gusty and erratic winds with the storms along with frequent lightning. If caught on the open water stay below deck if possible...keep away from ungrounded metal objects. Lat...lon 4397 12411 4396 12411 4400 12413 4284 12455 4242 12440 4225 12441 4205 12428 4184 12422 4181 12580 4198 12579 4220 12589 4370 12576 4386 12565 4399 12562 4403 12414
PZZ300 302 Pm Pst Sat Feb 24 2018
Synopsis for the southern oregon coastal waters..West winds will increase this morning and the combination of swell and building wind waves will lead to steepening seas. A stronger front will move onshore early Sunday, and it will produce very steep combined seas. Even heavier swell will move in Monday, with another round coming in Wednesday.

7 Day Forecast for Marine Location Near Hornbrook, CA
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location: 41.9, -122.57     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 250025
afdmfr
area forecast discussion
national weather service medford or
425 pm pst Sat feb 24 2018

Short term Through Tuesday...

winter weather and wind headlines for this afternoon and evening
have been expired since the current weather system and resultant
impacts have ended. Snow levels rose to between 2500 and 3500 feet
this afternoon and, with the higher Sun angle warming the surface,
roads across most areas have become mostly wet. Those in
mountains and the east side that are still snow covered have seen
lesser accumulations and main thoroughfares have been treated by
road crews, so impacts should be minimal. Altogether, while we
did see the oregon cascades get some strong accumulations today,
the storm system appears to have pushed a bit stronger to the
south and east, into the siskiyous, than model guidance had
previously indicated.

For Sunday through Monday we've issued the next round of headlines
as well as a weather story graphic with expected snow
accumulations. Model guidance has increased precipitation amounts
with this weather system, especially along and near the coast,
coastal mountains, into the siskiyous, and across northern
california and the east side.

Precipitation will push into the area Sunday morning across coos
and douglas counties. Models have slowed the southeastward
progression of the frontal system on Sunday, with the bulk of the
snow impacts reaching areas south of the umpqua divide and lake of
the woods now expected to arrive Sunday evening and night. We'll
need to continue to keep an eye out for how fast snow levels fall
and how much resultant snow accumulates in the sexton and canyon
mountain pass areas as well as in the west side valleys Sunday
night into Monday morning. For now, we've issued advisories for
areas above 2kft.

The weather will settle down briefly for Monday afternoon into
Tuesday before becoming active again. Btl

Long term Wednesday through Saturday...

models continue to show good agreement with active pattern over
the pacific northwest. An upper trough and low pressure system is
forecast to shift down the pacific northwest coast Wednesday and
Wednesday night. With the low moving into the pacific northwest,
there is the potential for a strong cold front to move inland and
impact the area late Wednesday into Wednesday night. This front
shifts east of the area on Thursday with an upper trough moving
over the area and bringing a showery pattern. Then a cold and
showery pattern continues Friday into Saturday.

On Wednesday, there is general agreement that a relatively strong
and moist frontal system will approach the pacific northwest coast
then move inland Wednesday night into Thursday morning. Models
indicate that this front may bring abundant moisture into the area
late Wednesday through early Thursday. Areas of moderate to heavy
rain and snow are possible, especially from the cascades west. Snow
levels are expected around 3000 to 4000 feet with this system. So,
impacts from accumulating snow are possible on higher mountain
passes and as well as for the mount shasta area. East of the
cascades, expect light to moderate precipitation, mostly falling as
snow. Also models indicate that a strong mid level 700 mb jet of
around 45 to 55 kt may move into the area ahead of the front. This
jet aloft combined with an increasing surface pressure gradient will
bring the potential for areas of strong gusty to develop, mainly in
the shasta valley and from the cascades east. However, due to
variability in the details on the strength and track of this low
pressure system, there is lower confidence on the exact details and
impacts with this storm. Will need to monitor this system
with future model runs.

Thursday into Friday, an upper trough is forecast to gradually move
inland over the region and bring widespread showers. Additional
disturbances moving around the trough and inland may bring enhanced
showers during this period. Snow levels will lower late Thursday
into Friday and are expected to lower from 2500 to 3500 feet down to
1000 to 2000 feet on Friday.

Friday night into Saturday, the trough will gradually shift eastward
and a shortwave ridge will build into the area resulting in
decreasing showers. There is significant variability on the timing
of this ridge building into the area and decreasing shower activity.

May continue to see showers across the area on Saturday with
diminishing activity Saturday evening night. However, given the
upper ridge is weak and models show another low pressure system
developing off the coast, expect only a brief break in the active
pattern next weekend. -cc

Aviation 25 00z TAF cycle... Scattered showers with areas of MVFR
cigs and gusty winds will linger into early this evening then
expect showers to diminish with conditions becoming mainlyVFR
across inland areas. This evening and tonight, another front will
approach the area then shift inland on Sunday. As precipitation
spreads into the coast late this evening and tonight, expect MVFR
cigs vis to develop along coastal areas between 06-09z. Rain and
snow will spread inland with MVFR CIGS vis becoming widespread from
the coast into the umpqua valley around 10-13z. Elsewhere, west of
the southern oregon cascades expect a mix ofVFR with areas of MVFR
cigs to develop Sunday morning. Widespread mountain obscurations are
expected to develop late tonight into Sunday. East of the cascades
and in northern california expect mainlyVFR conditions with local
MVFR CIGS vis developing on Sunday as precipitation spreads inland.

-cc

Marine Updated 226 pm pst Saturday 24 feb 2018... West winds will
diminish tonight. At the same time, a west swell will build today,
pushing combined seas to small craft advisory levels. A stronger
front is expected to bring both stronger west winds and larger seas
to the area on Sunday. While winds diminish Monday, another even
larger swell will keep very steep seas going through Monday. Seas
remain steep Monday afternoon, but lengthening periods will allow
overall sea conditions to improve. Models are now indicating seas
building to 27 feet early Thursday, but this is more than ten feet
higher than indicated yesterday, and have gone midway between
yesterday's and todays guidance for this event. -sven

Mfr watches warnings advisories
Or... Winter weather advisory from 4 pm Sunday to 4 am pst Monday for
orz029>031.

Winter storm warning from 10 am Sunday to 4 am pst Monday for
orz027-028-030.

Winter weather advisory from 4 pm Sunday to 4 am pst Monday
above 2000 feet in the for orz023-024-026.

Winter storm warning from 4 am Sunday to 4 am pst Monday above
2500 feet in the for orz025.

Winter weather advisory from 4 am Sunday to 4 am pst Monday
below 2500 feet in the for orz025.

Winter storm warning from 4 pm Sunday to 4 am pst Monday for
orz029.

Ca... Winter weather advisory from 4 pm Sunday to 4 am pst Monday for
caz081>085.

Winter storm warning from 4 pm Sunday to 4 am pst Monday above
2000 feet in the for caz080.

Pacific coastal waters...

- small craft advisory from 10 pm this evening to 4 am pst
Tuesday for pzz350-356-370-376.

- hazardous seas warning until 10 pm pst this evening for
pzz350-356-370-376.

Btl cc sven


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 86 mi46 min ENE 1.9 G 2.9 45°F 48°F1029.2 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 96 mi38 min N 9.7 G 14 48°F 50°F9 ft1029.2 hPa (+0.7)

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montague Siskiyou County Airport, CA9 mi35 minN 810.00 miFair32°F26°F79%1028.8 hPa

Wind History from SIY (wind in knots)
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Last 24hrNE3N7CalmN7CalmSE4SW3SW3SW6SW4SE3W3SW4S5SW13W7W21
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1 day agoN12N17
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N13N8N4CalmNE3NE6NE6N6NE6NE7E4N5N4Calm34CalmE4SE3CalmW4E4
2 days agoN9NE6NE8CalmN8NE6NE7Calm4CalmCalmSW4S3S6CalmCalmCalmN11N17
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N17N12N15N13N10

Tide / Current Tables for Crescent City, California
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Crescent City
Click for Map
Sat -- 02:27 AM PST     Moonset
Sat -- 05:36 AM PST     7.05 feet High Tide
Sat -- 06:59 AM PST     Sunrise
Sat -- 12:28 PM PST     Moonrise
Sat -- 12:59 PM PST     0.44 feet Low Tide
Sat -- 06:01 PM PST     Sunset
Sat -- 07:41 PM PST     5.04 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.23.74.65.56.46.976.55.54.22.81.60.70.40.71.52.53.64.44.954.74.23.7

Tide / Current Tables for Brookings, Chetco Cove, Oregon
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Brookings
Click for Map
Sat -- 02:28 AM PST     Moonset
Sat -- 05:37 AM PST     7.05 feet High Tide
Sat -- 06:59 AM PST     Sunrise
Sat -- 12:28 PM PST     Moonrise
Sat -- 01:03 PM PST     0.44 feet Low Tide
Sat -- 06:01 PM PST     Sunset
Sat -- 07:42 PM PST     5.04 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.23.74.55.56.46.976.55.64.32.81.60.80.40.71.42.53.54.44.954.74.23.7

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 Medford, OR (22,6,7,8)
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Ground Weather Radar Station Medford, OR
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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.