Friday, September21, 2018 L-36.com


Marine Weather and Tides
Happy Camp, CA

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 7:02AMSunset 7:15PM Friday September 21, 2018 8:28 AM PDT (15:28 UTC) Moonrise 4:54PMMoonset 2:29AM Illumination 89% Phase: Waxing Gibbous; Moon at 12 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
    EDIT      (on/off)   Help
PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 302 Am Pdt Fri Sep 21 2018
.small craft advisory in effect until 11 am pdt this morning...
Today..N winds 5 to 10 kt, with gusts to 20 kt. Waves nw 5 ft at 7 seconds. Patchy fog.
Tonight..N winds 5 to 10 kt. Waves nw 3 ft at 5 seconds...and nw 3 ft at 9 seconds. Patchy fog.
Sat..N winds 5 to 10 kt. Waves nw 5 ft at 7 seconds. Patchy fog.
Sat night..N winds 10 to 15 kt. Waves nw 6 ft at 6 seconds.
Sun..N winds 15 to 25 kt. Waves nw 9 ft at 8 seconds.
Mon..N winds 10 to 15 kt. Waves nw 8 ft at 8 seconds.
Tue..N winds 5 kt. Waves nw 6 ft at 9 seconds...and nw 2 ft at 13 seconds.
PZZ400 302 Am Pdt Fri Sep 21 2018
Synopsis for northern california waters..Brisk northerly winds will persist across the coastal waters through Friday. Winds will weaken during Saturday before increasing again on Sunday.


7 Day Forecast for Marine Location Near Happy Camp, CA
   Hourly   EDIT   Help
location: 41.5, -123.35     debug


Area Discussion for - Medford, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmfr 211140
afdmfr
area forecast discussion
national weather service medford or
440 am pdt Fri sep 21 2018

Discussion The focus for updating was on the probability of
precipitation and precipitation amounts regarding a relatively
weak cold front to reach the coast late tonight then move inland
on Saturday. In coordination with our neighbors to the north, the
probability of very light amounts was increased for the coos
county and douglas county coast, and northern portions of douglas
county. Elsewhere, a few sprinkles cannot be ruled out for
Saturday afternoon and evening... Especially for the umpqua divide
eastward across far northern portions of klamath and lake
counties.

Otherwise, the forecast is largely consistent with the previous
issuance. The other main impacts from the approaching front will
be: gusty westerly winds during this afternoon evening and again
on Saturday, cooler temperatures during the weekend, and an influx
of marine clouds to the coast and umpqua valley on Saturday.

Models continue to show a significant warm-up starting Sunday
night with much warmer temperatures Tuesday the 25th through
Friday the 28th. This includes a chetco effect with downslope
warming for brookings, and warming across the area which could
send temperatures back into the 90s here in medford and in the
shasta valley with readings approaching triple digits in far
western siskiyou county. Overall, temperatures should be about
10-15 degrees above normal for inland areas. Record highs for this
period mostly look out of reach, but if the warmth holds through
Friday, the 28th, medford's record of 94 degreed set in 2003 may
be within reach. The only area likely to see readings near normal
will be the coast north of brookings.

Aviation For the 21 06z tafs... Areas of ifr CIGS and
visibilities are possible late tonight into early Friday morning
along the coast and into the coastal valleys, mainly from cape
blanco north. However, given the east winds and the dry air in
place over the region, low clouds and fog appear less likely than
before, so these have been removed from the koth forecast. If it
does form, MVFR ifr will be short lived into the morning. Inland,
vfr will prevail through the TAF period.

A weak front will approach the coastline late in the day Friday,
increasing mid to high level clouds across the area, and pushing
some lower clouds into the coastline towards the end of the taf
period. Some showers are possible at koth and surrounding areas,
but these will likely hold off until after 06 utc. -bpn

Marine Updated 200 am pdt Friday 21 september 2018... North
winds and steep wind-driven seas will continue early this morning
south of gold beach. A frontal system will move through the
northern waters by Saturday morning, bringing some light rain.

High pressure will build offshore this weekend into early next
week and a thermal trough will develop along the coast. Steep seas
and gusty north winds may develop south of CAPE blanco Saturday
night. Then, Sunday into Monday, expect a mix of steep to very
steep seas and strong gusty north winds that could reach gale
force south of CAPE blanco. North of CAPE blanco, small craft
advisory level winds and seas are possible Sunday evening through
Monday. Elevated steep seas may continue in the waters Tuesday
into Wednesday due to a mix of wind seas and swell. -cc

Fire weather Updated 2 am pdt Friday, 21 september 2018...

another round of moderate overnight recoveries for the mid slopes
and ridges, especially in the higher elevations in western portion
of calfifornia fire zone 280, and oregon zones 618, 619 and 620
early this morning. But, with lighter east to northeast winds than
Thursday morning.

The thermal trough will shift east over the westside valleys today
and will bring warmer afternoon temperatures to most areas. West
winds will increase late this afternoon and evening and rhs will
be low enough to warrant a headline, particularly over fire zones
284, 285, 624 and 625. But, these areas are not expected to reach
critical fire weather criteria.

A weak cold front could bring a few showers mainly north of cape
blanco along the coast and north of the umpqua divide and west
facing slopes of the cascades from about crater lake north early
Saturday morning into Saturday afternoon. Even then it's debatable
weather or not we'll get anything measurable. Best case scenario
would be around 0.05 of and inch in a few higher-terrain areas near
the coast. Winds will end up stronger east of the cascades Saturday
afternoon and evening, but relative humidities should be a bit
higher.

Confidence is becoming higher we could be dealing with dry
conditions with gusty northeast winds (another thermal trough
pattern) Sunday into next Wednesday with moderate to poor overnight
recoveries possible starting Sunday night. The models don't show
anything that would be of concern with respect to the magnitude of
winds at 925 and 850 mb. However, the pressure gradient is tight
and likely to be tighter than during the peak of the easterly wind
event of earlier this week.

The combination of wind and moderate to poor overnight recoveries
could be cause for concern for the klondike fire Sunday night
through Wednesday morning. As always, the details on this could
change given it's still a ways out there.

Climatologically, many of our most robust east winds have occurred
during the last week of september and the first week of october, so
this certainly bears some watching. -petrucelli dw

Mfr watches warnings advisories
Or... None.

Ca... None.

Pacific coastal waters... Small craft advisory until 5 am pdt
early this morning for pzz356-376.

Dw cc


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 47 mi47 min 47°F 55°F1015.1 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 60 mi39 min Calm G 1.9 51°F 51°F4 ft1015.1 hPa (+1.0)
46244 - Humboldt Bay, North Spit, CA 68 mi29 min 54°F5 ft

Wind History for Crescent City, CA
(wind in knots)    EDIT      (on/off)   Help
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last
24hr
N3
NW7
SE8
S4
N10
G13
N14
G21
N11
G18
N15
G21
N17
G24
N12
G19
N11
G15
N6
G10
--
SE5
S6
G9
S5
SE2
G5
N1
NE1
NE1
E2
NW3
N2
N2
1 day
ago
N4
N2
N3
G7
NW12
G15
N8
G13
N15
G21
N11
G19
N14
G18
N16
G24
N11
G19
N9
G13
N9
G17
N9
G12
N5
G9
SE2
SE3
E1
NE3
N2
N3
N4
G7
N3
N5
NE1
2 days
ago
--
SW4
W7
SW5
S5
G8
S6
G10
SE10
G13
SE4
SE3
G10
W2
NW3
G7
S11
S15
S16
S5
NW2
NE4
N3
N2
N3
N3
N2
N3
N1

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Montague Siskiyou County Airport, CA51 mi96 minN 010.00 miFair39°F23°F53%1019 hPa

Wind History from SIY (wind in knots)
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last 24hrCalm3Calm3CalmCalmN3NE4Calm3CalmN8N9N11N9N3SE5NW3CalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalm--CalmS4N12
G16
3N14
G19
NE13N13N17N13NE7N13N93N4NE4E4CalmCalmCalmCalm
2 days agoCalmCalmCalm33SW4SW343N10N16N10N7N10N9N6N8N6N11N9N8NE5NE4Calm

Tide / Current Tables for Crescent City, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Trinidad Harbor, California
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Medford, OR (11,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Medford, OR
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.