Friday, January19, 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 7:32AMSunset 5:11PM Friday January 19, 2018 3:20 PM PST (23:20 UTC) Moonrise 9:07AMMoonset 7:54PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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 212 Pm Pst Fri Jan 19 2018
Synopsis for the southern oregon coastal waters..Westerly swell will remain very high and very steep through tonight but will decrease briefly to 11 to 13 feet late Saturday afternoon into Saturday evening. Another strong front will move through late Saturday night into Sunday. This storm will bring southerly gales across the entirety of the waters. Additionally, storm force winds will be possible for the northern outer waters. Otherwise, the high seas will continue. High pressure will bring brief improvement Monday. But, seas will remain elevated and another strong front is expected Tuesday.

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 192307
afdmfr
area forecast discussion
national weather service medford or
307 pm pst Fri jan 19 2018

Discussion Showers continue to diminish as the 700 mb flow
decreases this afternoon. An upper level ridge will continue to
nudge into the region and with decreasing onshore flow combining
with cooling surface temperatures scattered showers will slowly
become more isolated overnight. A warm front will move through the
area Saturday, continuing mostly light precipitation through the
day before moving north later Saturday afternoon. On Sunday the
real action moves in with winds increasing on the coast Sunday
morning. With a strong pressure gradient from redding to medford
warning strength southerly winds in the shasta valley are
possible, and with 700 mb winds nearing 70 kt east of the cascades
warning strength winds are also possible. Winds at the ridge
level are more westerly than the usual south to southwest that
usually accompany these strong southerly wind systems, and snow
levels in this westerly flow will remain low compared to the
usual high snow levels with these systems. However, the southerly
flow at the surface will feed moisture that will ramp up moisture
feed into siskiyou county from the sac valley and precip rates
will increase and snow levels will decrease at times with the
increased precip rates. Onshore flow with cooler temperatures
aloft will keep showers active into Monday. The zonal flow pattern
will transition to a building weak upper level ridge later Monday
into Tuesday morning. Sven

Long term Tuesday, jan 23rd through Friday night, jan 26th... The
next major shortwave trough in our ongoing storm series is expected
to arrive on Tuesday and persist through Friday. This trough of low
pressure is currently on track to be very significant in terms of
precipitation amounts, duration, and mountain snow, and will also
bring with it the possibility of lower elevation snowfall Wednesday
night through Friday. After this trough moves through model guidance
has generally been indicating high pressure ridging for next
Saturday the 27th into Tuesday the 30th, followed by a progressive
trough from the gulf of alaska clipping us as it focuses to our
north around the last day of the month into the first days of
february.

Precipitation probabilities, amounts, and snow levels have been
adjusted for Tuesday through Wednesday to be mostly in line with
model consensus, but with a slight lean (60 40) toward the colder
and wetter 12z ecmwf. While both models indicate significant
precipitation amounts, the ECMWF has been more consistent and seems
to hit the upslope areas more appropriately given the expected flow
directions. Snow levels have been raised some for the early part of
this weather system, up to about 5500 feet for most areas late
Tuesday. This is an indicator that the frontal system will be
capable of holding a significant amount of moisture. By Thursday
and Friday snow levels are expected to be teetering in the 1,000
to 2,500 foot range. Btl

Aviation 19 18z TAF cycle...

the core of a cold upper level trough over the region will cross the
cascades late this afternoon. This upper level trough will be
reinforced by a weaker, secondary trough Saturday morning.

Therefore, rain and snow showers are expected to continue through
the forecast period, though the vast majority of the shower activity
will be from the cascades westward. A mix of MVFR andVFR conditions
are generally expected through the forecast period, though a period
of valley ifr is possible, mainly west of the cascades, around
sunrise Saturday morning. Snow levels will be 2500 to 3500 feet for
most of the period, so east side airfields will experience snow with
showers that do make it there. Expect partial terrain obscurations
through the period, greatest along the coast range, umpqua divide,
and oregon cascades. Btl

Marine Updated 215 pm pst Friday 19 jan 2018... Westerly swell
will gradually subside but remain very high and very steep through
tonight. Swell dominated seas will stay high and steep but diminish
briefly to 11 to 13 feet late Saturday afternoon into Saturday
evening. Another strong front will move through late Saturday night
into Sunday. This front will bring another round of strong south
winds and very high seas. Current models are showing high end gales
for all of the waters, and possible storm force conditions north of
cape blanco. Will keep the storm watch in effect for now. Currently,
it looks like the best time window for possible storm force winds
will be early Sunday morning with winds diminishing Sunday
afternoon.

Seas will build again ahead of this front. Although not as high as
the previous event, very steep seas of 20 to 23 feet are expected by
early Sunday morning. High pressure will bring brief improvement
Monday, but seas will remain elevated and another strong front is
expected Tuesday. Br-y bs

Mfr watches warnings advisories
Or... High surf advisory until 4 am pst Saturday for orz021-022.

High wind watch from Sunday morning through Sunday evening for
orz030-031.

Ca... High wind watch from late Saturday night through Sunday
afternoon for caz081.

Pacific coastal waters... Gale watch from Saturday evening through Sunday afternoon for
pzz350-356-370-376.

Small craft advisory from 4 am to 10 pm pst Saturday for
pzz350-356-370-376.

Hazardous seas warning until 4 am pst Saturday for
pzz350-356-370-376.

Storm watch from Saturday evening through Sunday afternoon for
pzz370.

Sbn sbn sbn


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 86 mi51 min SSE 12 G 15 48°F 52°F1019.5 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 96 mi91 min S 14 G 19 49°F 53°F17 ft1018.9 hPa (-0.8)

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montague Siskiyou County Airport, CA9 mi28 minN 010.00 miA Few Clouds41°F33°F73%1019.1 hPa

Wind History from SIY (wind in knots)
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Last 24hrW11NW16E4E4CalmNE5NE3N4CalmCalmCalmCalmSW6W3E5E6CalmCalmCalmCalmCalmCalmN7Calm
1 day agoS22
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S19SW6E3CalmSW9S4S4S10SE6SW3W10SW10S10S10
2 days agoCalmCalmSE6CalmCalmCalmCalmS3CalmNE3N4N3E3NE4N5NE8CalmNE7NE9N4CalmS21
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G29

Tide / Current Tables for Crescent City, California
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Crescent City
Click for Map
Fri -- 01:27 AM PST     6.16 feet High Tide
Fri -- 06:40 AM PST     3.16 feet Low Tide
Fri -- 07:39 AM PST     Sunrise
Fri -- 09:13 AM PST     Moonrise
Fri -- 12:24 PM PST     7.04 feet High Tide
Fri -- 05:16 PM PST     Sunset
Fri -- 07:18 PM PST     -0.11 feet Low Tide
Fri -- 08:01 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.56.16.15.54.73.83.33.23.64.55.56.576.96.24.93.31.70.5-0.10.10.92.23.7

Tide / Current Tables for Brookings, Chetco Cove, Oregon
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Brookings
Click for Map
Fri -- 01:28 AM PST     6.16 feet High Tide
Fri -- 06:44 AM PST     3.16 feet Low Tide
Fri -- 07:40 AM PST     Sunrise
Fri -- 09:13 AM PST     Moonrise
Fri -- 12:25 PM PST     7.04 feet High Tide
Fri -- 05:15 PM PST     Sunset
Fri -- 07:22 PM PST     -0.11 feet Low Tide
Fri -- 08:01 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.56.16.15.64.73.93.33.23.64.45.56.476.96.253.41.80.6-0.100.82.13.6

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 (18,4,5,8)
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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.