Friday, April20, 2018 L-36.com


Marine Weather and Tides
Hornbrook, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:18AMSunset 8:00PM Friday April 20, 2018 1:21 PM PDT (20:21 UTC) Moonrise 9:06AMMoonset 12:00AM Illumination 29% Phase: Waxing Crescent; Moon at 5 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 911 Am Pdt Fri Apr 20 2018
Synopsis for the southern oregon coastal waters..Light winds and seas are expected today. A weak front will move into the waters tonight, then dissipate as it moves onshore early Saturday morning. A thermal trough will develop Saturday and will remain in place through Sunday. North winds will increase during the day Saturday and could approach gales in the southern waters by Saturday afternoon. North winds will weaken late Sunday night into Monday.

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 201751
afdmfr
area forecast discussion
national weather service medford or
1051 am pdt Fri apr 20 2018

Updated aviation discussion below
Discussion Only minor updates this morning... Mostly to bring
sky grids in line with current observations and to bump
temperatures up a few degrees in the west side valleys for this
afternoon.

Today will be a quiet day weather wise. An upper level ridge will
bring warm temperatures and dry conditions for the forecast area
through this afternoon and evening. A weak front will move through
the area late tonight into Saturday morning bringing mid-level
clouds and light precipitation to the coast and areas north of the
umpqua divide. Zonal flow behind the front will keep temperatures
seasonable for Saturday and dry conditions will prevail again. For
more details on the weather to follow beyond Saturday, see the
previous discussion below. Br-y

Aviation 20 18z TAF cycle... At the coast,VFR conditions will
continue this afternoon. Short range guidance has been consistent
the last few hours showing ifr CIGS developing around 2z as marine
stratus develops ahead of an approaching front. Have introduced the
lower conditions to develop at north bend at 2z, but it could be
delayed by an hour or two. CIGS are expected to improve Saturday
morning, however confidence on the the timing indicated in the taf
at north bend is low, so watch for updates.

Inland westside,VFR CIGS will continue into tonight. CIGS will
lower late tonight and could hover close to MVFR towards daybreak
Saturday with partial mountain obscuration mainly along and north of
the umpqua divide and west facing slopes of the cascades. Elsewhere,
including medford and klamath falls,VFR conditions will continue
through the TAF period. -petrucelli

Marine Updated 845 am pdt Thursday 19 april 2018... Light winds
and seas are expected today. A weak front will move through the
waters tonight, then dissipate as it moves inland early Saturday
morning. A west swell will build into the waters during the day
Saturday with seas expected to approach 10 feet by Saturday
afternoon.

A thermal trough will develop along the coast Saturday afternoon and
persist through at least Sunday. This will bring strong north winds
and steep to very steep seas Saturday afternoon through Sunday
evening. Gale force are possible for areas south of gold beach.

Steep to very steep are expected across the waters Saturday
afternoon through Sunday evening with very steep seas expected
mainly for areas south of CAPE arago. The most recent model runs
continue to show gales. So, confidence is moderate to high on gales
and very steep seas developing this weekend.

Winds and seas will gradually lower Sunday night and Monday.

However, continued areas of very steep seas are possible Sunday
night and areas of small craft advisory level winds and seas are
possible Monday into Monday night. -cc petrucelli

Prev discussion issued 333 am pdt Fri apr 20 2018
discussion... The upper level ridge that moved in behind the
exiting upper low is over the region this morning, with offshore
flow spreading east of the cascades by sunrise. With the upper
ridge and the offshore flow with the thermal trough along the
coast clear skies are present this morning over almost all of the
forecast area. With temperatures around 10 degrees higher than
they were at this time yesterday, in spite of similar clear skies
as yesterday, the 4 to 7 degree warm up from yesterday continues
to look on track. The upper level ridge transitions to a zonal
flow pattern this evening with a weak front washing out over the
region Saturday morning. Light precip is possible at the coast,
but the main effect of this front will be a weak marine push with
higher humidities. An upper level trough moves through Sunday, and
models continue to show weak instability in extreme southeast
portions of the forecast area. However, the flow is northerly
through early Sunday afternoon, and no moist unstable air is
feeding into the region prior to the indicated instability. Some
towering cumulus will likely be the result in most of the area,
with maybe the warners in modoc county seeing anything grow
beyond that. An upper level ridge builds in again behind the
exiting trough with offshore flow returning and remaining through
mid week. This will bring increasing temperatures through mid week
with highs in the upper 70s and lower 80s in the west side valleys
by Tuesday. Sven
aviation... 20 06z TAF cycle...VFR will prevail overnight. Patchy
MVFR ifr in low clouds and or fog could develop in some west side
valleys and along the coast late tonight into Friday morning;
otherwise,VFR will predominate. -fb

Mfr watches warnings advisories
Or... None.

Ca... None.

Pacific coastal waters... Gale watch from Saturday afternoon through
Sunday evening for pzz356-376. Hazardous seas watch from
Saturday afternoon through Sunday evening for pzz350-356-370-
376.

Mnf sbn cc map


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 86 mi52 min WSW 6 G 8 51°F 52°F1024.8 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 96 mi92 min WNW 7.8 G 12 52°F 53°F5 ft1024.7 hPa (+0.5)

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montague Siskiyou County Airport, CA9 mi29 minVar 310.00 miFair60°F35°F39%1024.7 hPa

Wind History from SIY (wind in knots)
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Last 24hrN6
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NE14NE10N10N7NE4NE5NE3E3S3CalmCalmN3CalmCalmCalmCalmCalmCalmCalmCalm3
1 day agoW10W8CalmSW7S11S4SE4E12N6CalmSE3E3N3E3N3CalmNE4CalmN4E5N8N9N9NW10
G18
2 days agoE543CalmCalmN3NW10N10CalmS4NE3NE3CalmE3NE3NE3CalmCalmCalmNE4CalmS8E3SW4

Tide / Current Tables for Crescent City, California
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Crescent City
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Fri -- 12:19 AM PDT     Moonset
Fri -- 02:48 AM PDT     7.07 feet High Tide
Fri -- 06:28 AM PDT     Sunrise
Fri -- 09:52 AM PDT     -0.83 feet Low Tide
Fri -- 10:13 AM PDT     Moonrise
Fri -- 04:34 PM PDT     5.40 feet High Tide
Fri -- 08:03 PM PDT     Sunset
Fri -- 09:43 PM PDT     2.69 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.966.87.16.55.43.720.5-0.5-0.8-0.40.72.13.54.75.35.44.94.13.42.82.73.1

Tide / Current Tables for Brookings, Chetco Cove, Oregon
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Brookings
Click for Map
Fri -- 12:20 AM PDT     Moonset
Fri -- 02:49 AM PDT     7.07 feet High Tide
Fri -- 06:28 AM PDT     Sunrise
Fri -- 09:56 AM PDT     -0.83 feet Low Tide
Fri -- 10:12 AM PDT     Moonrise
Fri -- 04:35 PM PDT     5.40 feet High Tide
Fri -- 08:04 PM PDT     Sunset
Fri -- 09:47 PM PDT     2.69 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.866.87.16.65.43.82.10.5-0.5-0.8-0.40.62.13.54.75.35.44.94.23.42.82.73.1

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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Wind Forecast for Medford, OR (16,3,4,5)
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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.