Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Coos Bay, OR

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:59AMSunset 7:42PM Wednesday March 29, 2017 12:13 AM PDT (07:13 UTC) Moonrise 7:18AMMoonset 8:51PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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
PZZ350 Coastal Waters From Florence To Cape Blanco Or Out 10 Nm- 822 Pm Pdt Tue Mar 28 2017
.small craft advisory in effect through Wednesday afternoon...
Tonight..S wind 15 to 20 kt...rising to 20 to 25 kt late tonight. Wind waves 3 to 4 ft...building to 4 to 6 ft after midnight. SWell W 11 to 12 ft at 16 seconds. Rain.
Wed..S wind 20 to 25 kt. Wind waves 6 to 8 ft. SWell W 11 to 12 ft at 15 seconds. Rain.
Wed night..SW wind 15 kt...veering to W after midnight. Wind waves 5 to 6 ft...subsiding to 4 ft after midnight. SWell W 10 to 11 ft at 14 seconds. Rain in the evening, then chance of showers after midnight.
Thu..NW wind 10 to 15 kt. Wind waves 4 ft. SWell W 8 to 9 ft. Slight chance of showers through the day.
Thu night..N wind 5 to 10 kt. Wind waves 3 ft in the evening... Becoming 2 ft or less. W swell 7 to 8 ft.
Fri..NE wind 5 to 10 kt...backing to N in the afternoon. Wind waves 2 ft or less. SWell W 7 ft.
Fri night..N wind 10 to 15 kt...veering to ne 5 kt after midnight. Wind waves 2 ft or less. SWell W 5 to 6 ft.
Sat..NE wind 5 kt...backing to N 10 to 15 kt. Wind waves 2 ft or less...becoming 3 to 4 ft. W swell 6 to 7 ft.
Sun..N wind 10 to 15 kt. Wind waves 3 ft in the morning... Becoming 2 ft or less, then...becoming 3 ft in the evening... Becoming 2 ft or less. SWell W 12 ft.
PZZ300 822 Pm Pdt Tue Mar 28 2017
Synopsis for the southern oregon a waters..Long period west swell will make bar crossings hazardous into Wednesday. Seas will remain high and steep through Wednesday night...largely due to a front that will bring advisory strength southerly winds tonight through Wednesday afternoon north of gold beach. High pressure will build west of the waters Wednesday night through Thursday with moderate north winds. Very long period west swell is expected this weekend.

7 Day Forecast for Marine Location Near Coos Bay city, OR
   Hourly   EDIT   Help
location: 43.38, -124.22     debug


Area Discussion for - Medford, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmfr 290549
afdmfr
area forecast discussion
national weather service medford or
1049 pm pdt Tue mar 28 2017
updated aviation section

Discussion Latest surface observations indicate the nearest
rain beginning in the last hour or two near newport... Otherwise
most precipitation has remained offshore and north of our CWA so
far this evening. This will change over the next 24 hours. A warm
front off the oregon coast will push well to our north overnight
into early Wednesday morning. Even so, some light rain is likely
along the coast from about bandon northward during this time
frame... As well as across northern douglas county and the cascades
from about crater lake northward. Elsewhere, slight chance to
chance pops exist along the south coast and the umpqua valley,
with a dry forecast most everywhere else. Snow levels will be very
high, above 8000 feet, so we won't aren't concerned about snow
impacts.

A cold front will move toward the coast Wednesday, then push
onshore Wednesday evening. I know it's hard to believe... But most
(if not all) areas will get wet yet again... Though not enough to
cause flooding. Post-frontal showers will continue behind the
front late Wednesday night into Thursday with snow levels dropping
to near 3000 feet. Breezy to windy conditions (northwest winds)
are expected over the east side Thursday, perhaps high enough for
an advisory. Showers end by Thursday evening for all except the
cascades as the 500 mb cold trough axis shifts to the east.

-spilde

Aviation 28/06z TAF cycle... A warm front will lift north of
the region overnight. ExpectVFR to prevail despite light
rain at times along the coast north of CAPE blanco. Ceilings will
gradually lower to MVFR and local ifr with terrain obscured
Wednesday into Wednesday evening as a cold front moves through.

Light to moderate rainfall will accompany the front, heaviest
along the coast and north of the umpqua divide and in the cascades.

Precipitation will become showery behind the front Wednesday evening
west of the cascades. -spilde

Marine Updated 200 pm pdt Tuesday 28 march 2017... Long period
west swell will make bar crossings hazardous into Wednesday. Seas
will remain high and steep through Wednesday night... Largely due to
a front which will bring increasing southerly winds and steep seas
tonight into Wednesday morning. Wind speeds are expected to reach
advisory strength for areas north of gold beach. Winds will decrease
Wednesday evening and then veer to the north Wednesday night into
Thursday. Winds may reach advisory strength in the outer waters
south of gold beach late Thursday afternoon into Saturday.

Confidence is low in the forecast beginning Saturday and into early
next week with additional storms possible. Very long period west
swell is expected this weekend. -sven

Prev discussion /issued 200 pm pdt Tue mar 28 2017/
discussion... 28/12z nam/gfs/ec in.

The northern hemispheric projection continues to show a wave
number of four around the globe and occasionally hints at a five
over the next several days. This argues for a moderately
progressive pattern. That is what we will get over the next few
days... But it will slow down towards the end of the week. Overall
the pattern looks quite spring like... With weaker storms driven by
low amplitude upper level troughs. The primary storm track will
remain to the north of the area... But there will be some action
down here.

A long wave ridge continues to build into the west coast this
morning. There was some light shower activity over the
umpqua... Western siskiyou county... And the coast this morning,
and very light precipitation is still being reported by several
mountain stations. What precipitation there is should end soon.

The ridge is bringing dry and warmer weather to the area today...

except over the oregon west side where cloud cover is keeping the
temperatures about the same as Monday. The ridge axis will
flatten and break to the east of the area late tonight into early
Wednesday. A short wave riding up the back side of the ridge will
move onshore to the north of the area Wednesday morning. A warm
front will move onshore Tuesday night... Followed by a trailing
cold front Wednesday afternoon. With most of the upper level
support remaining to the north... Both fronts will be relatively
weak this far south. Even so... Most if not all of the medford cwa
will get some light precipitation Tuesday night into Wednesday
night. Snow levels will be way up there... Around 8000 feet. A
stronger short wave with a more southerly trajectory will move
onshore late Wednesday night or early Thursday morning with the
long wave trough. This along with short waves diving down the back
side of the trough will support post-frontal showers lasting into
Thursday evening... But shower intensity and coverage will
diminish through the day Thursday. Snow levels will drop to
3000-4000 feet with the trough... But the heaviest precipitation
will have already fallen by that time.

Cold air will pour into the region behind the system, and this
transition will result in gusty northwest winds across the east
side Thursday afternoon and evening. Temperatures will then be
much colder over the entire region, although not much below
normal for this time of year. Areas of frost are possible in the
west side valleys Friday morning, where some sensitive vegetation
may have started spring growth.

After that... Another long wave ridge will build into the west
coast and this will bring another round of dry and warmer weather
beginning Friday and continuing into Saturday.

Extended discussion... Saturday through Tuesday... The operational
models are in pretty good agreement for most of the forecast period.

The weekend should be mainly dry. The upper ridge will flatten out
some on Saturday as a weakening cold front pushes south. It could
bring a few light showers mainly north of the umpqua divide,
otherwise it will remain dry. An upper trough will swing north of
the area on Sunday. The GFS digs the upper trough more compared to
the ecmwf, but either way moisture appears limited with this. The
gfs also shows another shortwave moving in from the northwest and
tracking northeast of our area Sunday night, but the track of it is
not favorable for precipitation in our area. Of note the ECMWF shows
more ridging and no shortwave in the same time period. Given the
above mentioned, we'll lean towards a dry solution on Monday.

Confidence beyond Monday is low with the GFS showing a wet solution
while the ECMWF is dry, therefore no changes in the forecast were
made. -petrucelli

Mfr watches/warnings/advisories
Or... None.

Ca... None.

Pacific coastal waters... Small craft advisory from 11 pm this evening
to 5 pm pdt Wednesday for pzz350-356-370-376.

Small craft advisory for hazardous seas until 11 am pdt Thursday
for pzz350-356-370-376.

Mas/jrs/map/sbn


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
CHAO3 - 9432780 - Charleston, OR 7 mi43 min SE 1 G 4.1 52°F1023.9 hPa
46229 - UMPQUA OFFSHORE, OR (139) 32 mi27 min 51°F10 ft
PORO3 - 9431647 - Port Orford, OR 47 mi43 min SSE 13 G 15 53°F 53°F1025.2 hPa

Wind History for Charleston, OR
(wind in knots)    EDIT      (on/off)   Help
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
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
Last
24hr
--
SE2
SE2
SE2
G5
SE2
S2
G5
SE1
G4
SE2
S2
SE1
G5
--
S1
G7
W3
W3
SW3
W4
G7
SW4
G9
SW4
G8
S3
G8
SW4
G7
SE2
SW3
G7
S2
G6
S2
G5
1 day
ago
SW5
G11
S2
G6
SW4
G8
SW3
G7
SW5
G17
SW3
G6
W13
G17
W9
G14
W4
G11
W6
G10
W7
G11
W6
G9
W7
G12
W9
G12
W4
G8
W9
G13
W7
G11
W7
G11
S2
S1
W3
G8
S2
SE1
SE2
2 days
ago
S1
G4
SE2
G6
SE5
G9
E2
G5
SE3
S2
G6
S3
G8
S4
G17
S6
G16
S5
G21
SW5
G10
W8
G16
SW4
G12
SW3
G13
SW3
G9
SW3
G8
SW1
G9
SW4
G8
SW3
G7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
North Bend, North Bend Municipal Airport, OR4 mi18 minSSE 710.00 miOvercast50°F42°F76%1024 hPa

Wind History from OTH (wind in knots)
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
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
Last 24hrS5SE5S4SE4S5S5SE6S7S5S5SE6S4S7W6W9W10SW9SW10S7SW5S3SE4S5S7
1 day agoSW7S7S6S6SW7
G16
SW8W12W8CalmNW12W5W11W11W12W11W8W8W11SW5SW4SW7S4SE5S4
2 days agoS6SE6SE8S6S4SE7SE11SE14SE13
G18
SE10SE10
G15
S10
G15
S7S20
G32
S13
G28
SW9W11SW8SW8W8SW4S4SW7SW6

Tide / Current Tables for Coos Bay, Oregon
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Coos Bay
Click for Map
Wed -- 03:02 AM PDT     7.95 feet High Tide
Wed -- 07:03 AM PDT     Sunrise
Wed -- 08:17 AM PDT     Moonrise
Wed -- 09:18 AM PDT     -0.24 feet Low Tide
Wed -- 03:32 PM PDT     7.42 feet High Tide
Wed -- 07:40 PM PDT     Sunset
Wed -- 09:27 PM PDT     0.60 feet Low Tide
Wed -- 09:50 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.36.17.47.97.56.14.22.20.6-0.201.22.94.86.37.37.36.44.93.11.60.70.71.7

Tide / Current Tables for Charleston, Oregon
   EDIT      (on/off)   Help   One Week of Data
Charleston
Click for Map
Wed -- 01:38 AM PDT     8.16 feet High Tide
Wed -- 07:03 AM PDT     Sunrise
Wed -- 07:58 AM PDT     -0.22 feet Low Tide
Wed -- 08:18 AM PDT     Moonrise
Wed -- 02:09 PM PDT     7.53 feet High Tide
Wed -- 07:40 PM PDT     Sunset
Wed -- 08:06 PM PDT     0.68 feet Low Tide
Wed -- 09:51 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.988.17.25.63.61.60.3-0.20.31.73.65.56.97.57.264.42.61.30.71.12.34.1

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Medford, OR (3,6,7,8)
      (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.