Friday, April20, 2018 L-36.com


Marine Weather and Tides
Crescent City, 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 6:26AMSunset 8:03PM Friday April 20, 2018 8:42 PM PDT (03:42 UTC) Moonrise 9:13AMMoonset 12:00AM Illumination 32% Phase: Waxing Crescent; Moon at 6 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 830 Pm Pdt Fri Apr 20 2018
Synopsis for the southern oregon coastal waters..A weak front will move through the waters late tonight. A thermal trough will develop Saturday and will remain in place through Sunday. North winds will increase Saturday with gales in the southern waters from the afternoon into Sunday evening. North winds will weaken late Sunday night into Monday.

7 Day Forecast for Marine Location Near Crescent City, CA
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location: 41.76, -124.19     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 202125
afdmfr
area forecast discussion
national weather service medford or
225 pm pdt Fri apr 20 2018

Short term Rest of today through Monday night... Spring-like
weather is in place as temperatures are running about 5 to 10
degrees warmer than they were this time yesterday. Mid-level
clouds associated with a weak front are pushing inland. For those
away from the coast and south of the umpqua divide, this will be
all that is really noticed about the front as it will wash out as
it moves inland. Those along the coast and north of the umpqua
divide could see some light precipitation late this evening and
overnight. There are some returns on the radar already, but a look
observation sites and area webcams show that nothing is making it
to the ground. After this weak front moves through tonight, flow
aloft becomes zonal and a thermal trough will develop along the
coast Saturday, leading to gales in the marine waters and
seasonable temperatures.

A shortwave trough will move through on zonal flow Sunday. Models
have trended further south and deeper with this trough which could
lead to possible convection in the far eastern portions of the
forecast area. Instability parameters look marginal at best and
there really isn't much southerly flow ahead of this trough to bring
in the moist unstable air to "prime the pump". Although moisture is
limited, models are indicating enough instability to warrant a
mention of slight chance of thunderstorms for eastern portions of
modoc county and southeast lake county Sunday afternoon. For the
rest of the area, conditions will be similar to Saturday (dry and
mild), but may be a few degrees warmer along the southern coast
thanks to the chetco effect.

Upper level ridging builds in Monday and temperatures will begin a
warming trend. Monday will be quite warm for this time of year with
temperatures around 10 to 15 degrees above normal. This translates
to upper 70s west of the cascades, with some locations reaching the
80 degree mark (low to mid 80s in the klamath river valley in
northern california), and mid to upper 60s east of the cascades.

Temperatures will only get warmer as we head into the extended. Br-y

Long term Tuesday morning through Friday night... The focus for
this discussion is how the models are handling the low in the
pacific and when it will actually arrive inland. A few days ago
the GFS was forecasting that to be around Tuesday and Wednesday,
but the slower ECMWF solution was correct. We went with the ecmwf
forecast today, which is depicting the low hitting us around
Friday. Stayed away from thunderstorms at this time because we
didn't see any instability in the area, so just some showers
forecasted at this point.

The other topic will be high temperatures across the region Tuesday
to Thursday. The guidance has warmed up over the last few forecast
cycles. High temperatures are expected to easily break the 80's in
the west side valleys and mid 70's for the east side. Have moderate
to high confidence in these warmer temperatures. Some records may
fall Tuesday through Thursday, but we're not expecting records in
the west side valleys to fall. Right now Thursday is looking like
the warmest day as thats when the ridge is at it's strongest, but
all three should be quite warm. -smith

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 200 pm pdt Friday 20 april 2018... Calm weather
will continue through tonight. A weak front will move into the
waters tonight, then dissipate as it moves onshore early Saturday
morning. Offshore high pressure will build and strengthen west of
the waters Saturday morning. At the same time a thermal trough will
develop and strengthen along the coast. This will result in
increasing north winds and steep wind driven seas late Saturday
morning and lasting through Sunday evening. There's good agreement
winds will be strongest from about gold beach south, but low end
gales are still expected just south of bandon and beyond 10 nm from
shore, thus affecting the southern portion of zone 370. Elsewhere
small craft advisory conditions are expected. The headlines have
been adjusted to reflect this. Please see mwwmfr for more details.

Winds and seas will gradually lower Sunday evening, especially over
the northern waters. However, steep wind driven seas will persist in
the southern waters and it may not be until Sunday night before they
diminish below gales.

The general consensus is for the thermal trough to build north and
weaken Sunday night through Monday. This will result in diminishing
winds and seas. This pattern is not expected to change much Tuesday
and Wednesday, therefore conditions should be calmer during this
time. -petrucelli

Mfr watches warnings advisories
Or... None.

Ca... None.

Pacific coastal waters... Small craft advisory from 1 pm Saturday to 11 pm pdt Sunday for
pzz350-356-370-376.

Gale warning from 1 pm Saturday to 11 pm pdt Sunday for
pzz356-370-376.

Mnf czs map


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 1 mi43 min N 5.1 G 7 51°F 52°F1025.7 hPa (+1.1)
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 12 mi53 min NNW 9.7 G 12 52°F 53°F5 ft1025.3 hPa (+0.6)
46244 - Humboldt Bay, North Spit, CA 60 mi73 min 54°F6 ft

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Crescent City, Jack McNamara Field Airport, CA3 mi47 minNNW 410.00 miFair51°F45°F80%1026.3 hPa
Brookings, Brookings Airport, OR22 mi47 minNNW 910.00 miFair51°F41°F69%1027.1 hPa

Wind History from CEC (wind in knots)
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Last 24hrN11N3S4S8S7S5E3E4CalmE5CalmCalmCalmW7W5CalmNW9NW10NW11N9N7N7NW9N4
1 day agoN9CalmE4E5E3CalmCalmNE3NE3CalmNE4N3NE6NW9N15
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2 days agoCalmCalmCalmE4E4E3E4E4E4E5E5E4Calm3NW5NW8NW9NW10NW10NW11N10N10N11N8

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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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 (23,6,7,8)
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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.