Thursday, February22, 2018 L-36.com


Marine Weather and Tides
Port Orford, OR

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 7:01AMSunset 5:59PM Thursday February 22, 2018 2:47 PM PST (22:47 UTC) Moonrise 10:57AMMoonset 12:17AM Illumination 52% Phase: First Quarter Moon; Moon at 8 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
PZZ356 Coastal Waters From Florence To Cape Blanco Or Out 10 Nm- Coastal Waters From Cape Blanco Or To Pt. St. George Ca Out 10 Nm- 207 Pm Pst Thu Feb 22 2018
.hazardous seas warning in effect until 10 pm pst this evening...
Tonight..N wind 15 to 25 kt...becoming ne 5 to 15 kt after midnight. Wind waves 3 to 5 ft in the evening... Becoming 2 ft or less. NW swell 9 to 12 ft at 10 seconds...subsiding to 8 to 9 ft at 9 seconds and W 5 ft at 17 seconds after midnight. Chance of showers in the evening.
Fri..E wind 5 to 10 kt...veering to sw 5 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 5 to 6 ft at 9 seconds...subsiding to 4 ft at 8 seconds in the afternoon. Slight chance of snow in the afternoon.
Fri night..SW wind 5 to 15 kt. Wind waves 2 ft or less... Becoming 3 ft after midnight. NW swell 4 ft at 8 seconds... Becoming 3 to 6 ft at 8 seconds after midnight. Chance of rain.
Sat..W wind 10 to 20 kt...veering to nw 10 to 15 kt in the afternoon. Wind waves 3 to 4 ft. NW swell 5 to 8 ft. Chance of rain.
Sat night..NW wind 10 kt...backing to sw after midnight. Wind waves 2 ft or less...becoming 3 ft after midnight. NW swell 9 to 12 ft. Chance of showers through the night.
Sun..SW wind 10 to 20 kt. Wind waves 2 ft or less...becoming 3 to 4 ft in the afternoon. NW swell 9 to 11 ft. Rain likely.
Sun night..W wind 15 to 20 kt...easing to 10 to 15 kt after midnight. Wind waves 3 to 4 ft. NW swell 8 to 10 ft. Rain.
Mon..NW wind 15 kt...veering to N in the afternoon, then... Backing to nw in the evening...veering to ne after midnight. Wind waves 4 ft in the morning... Becoming 2 ft or less, then... Becoming 3 ft in the evening... Becoming 2 ft or less. NW swell 13 ft.
Tue..NE wind 10 kt...backing to W in the evening, then... Backing to sw after midnight. Wind waves 2 ft or less. NW swell 12 ft...subsiding to 10 ft.
PZZ300 207 Pm Pst Thu Feb 22 2018
Synopsis for the southern oregon coastal waters..A low is moving southward along the coast, causing increasing north winds over the waters in its wake... Seas will remain steep through this evening and diminish slightly into Friday. High pressure will build over the region Friday resulting in lighter winds and calmer sea conditions that will last into Saturday. A front will move onshore Sunday, and it will bring high and steep northwest swell with it. Even heavier swell will move in Monday.

7 Day Forecast for Marine Location Near Port Orford, OR
   Hourly   EDIT   Help
location: 42.74, -124.5     debug


Area Discussion for - Medford, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmfr 221647
afdmfr
area forecast discussion
national weather service medford or
847 am pst Thu feb 22 2018

Update Continuing to monitor numerous showers moving northwest
to southeast across the area. These showers will slowly dissipate
from north to south through the day, although west facing slopes
could see showers linger a while longer as upslope flow persists
through the afternoon. Current traffic camera images show
significant backups along interstate 5 at all passes, and many
area roads remain covered and slick. Will continue the winter
weather headlines, and cancel as needed once showers come to an
end.

Skies are expected to clear tonight, and if enough snow survives
the daylight hours, temperatures will quickly drop this evening.

There is a significant risk for ice reforming on the roads,
posing a hazard for any travel through tomorrow morning. Keep an
eye on the road conditions, plan travel accordingly, and if you
must drive, use extra caution both today and tomorrow.

Will be putting major effort into the forecast for this weekend
and early next week as the next two systems arrive, both with a
chance to produce more rounds of low elevation snow. Watch for
possible updates throughout today.

For more information, see the previous discussion below. -bpn

Aviation 22 12z TAF cycle... Mostly ifr conditions have set in
due to widespread snow, save for the coast. On and off snow with
periods of heavier snow and lower vsbys CIGS will continue through
sunrise, then most snow will taper off through the afternoon and
conditions will improve. Expect widespread terrain obscuration,
and periods of lifr conditions in heavier showers.

Marine Updated 800 am pst Thursday 22 feb 2018... A low is moving
southward along the coast, causing increasing north winds over
the waters in its wake... Which could bring gusts to near gale
force this morning, with steep waves. High pressure will build
over the region Friday resulting in lighter winds and calmer sea
conditions that will last into Saturday. A front will move onshore
Sunday, and it will bring high and steep northwest swell with it.

Even heavier swell will move in Monday.

Prev discussion issued 529 am pst Thu feb 22 2018
short term... Focus this morning has been on a developing winter
storm over our area. As expected, snow spread into our area from
the north this morning. Webcams show that roseburg is already
snow-covered, and it is now snowing heavily in the i-5 passes
from there south to grants pass. Given radar and satellite trends
as well as upstream observations, the winter weather advisory was
upgraded to a winter storm warning for west side locations above
1500 feet. We'll probably see at least 3-6 inches in these
locations. We're still expecting 1-3 inches in the valleys, so the
winter weather advisories remain in effect for valley locations.

We also issued a winter weather advisory for the cascades and
siskiyous, including i-5 at siskiyou summit. Snowfall won't be
excessive by their standards, but it is very cold up there, and
snow will make for difficult travel conditions much of today.

A big difference with this storm compared to previous storms is
that the ambient environment is much colder, and this will allow
snow to stick much more easily, as we've already seen up north. It
has even snowed down to the beaches occasionally already, and
we'll likely see some accumulations at elevations down to 100 or
200 feet.

Radar continues to fill in over the rogue and illinois valleys,
and we expect to see snow increase in these areas through dawn.

The morning commute will be a slippery one for much of the west
side. Snow will diminish to flurries by late morning. No changes
were made beyond today, and much of the previous discussion
follows for reference. -wright
previous short term issued 412 pm pst Wed feb 21 2018: snow
showers will taper off Thursday evening with some clearing
expected Thursday night into Friday morning. With new snow on the
ground and a cold air mass overhead, temperatures could make a
significant plunge by sunrise on Friday morning. However, if cloud
cover continues, as has occurred with the past several events, it
will be more difficult for temperatures to drop significantly.

Current thinking is that clouds will clear enough to allow for
good radiational cooling, and this should produce below freezing
lows all the way down to the coast, with single digits across the
east side, and low 20s to teens possible in the west side valleys.

Have issued a freeze watch for the coastal areas, but any early
season plant growth in the area is under the threat of freeze
damage if the proper precautions are not taken.

After a brief break Friday, the next trough arrives Friday night
into Saturday. This wave appears weaker and slightly warmer than
the previous ones, so snow levels will be slightly higher, and
precipitation amounts should stay on the lower side. The wave
will pass by Saturday afternoon, but moist onshore flow should
keep showers ongoing into the extended period. -bpn
long term... Sun, feb 25th through thu, mar 1st... And beyond...

this long term period of the forecast will begin with a trough of
low pressure centered over the rockies and high pressure extending
from just east of the hawaiian islands north-northwestward to the
bering sea. This will continue to result in a northwest flow storm
track across the forecast area. By the end of the period, gefs
500mb geopotential height anomalies suggest the low pressure
troughing is likely to retrograde westward. This puts the trough
axis just inland from the west coast, west of the cascades.

Although the ridge over the pacific is not expected to move much,
the net effect of the change in the overall pattern during this
time period is likely to allow for the weather systems moving in
to pick up more moisture off of the pacific before they move
inland. Since temperatures are very likely to remain on the colder
side of late february normals, we expect to continue to see our
snowpack grow, likely faster than it has recently.

More specifically, on Sunday the 25th through Monday the 26th, a
major shortwave trough is expected to move through, with water
amounts mostly in the 0.50" to 1.25" range from the oregon cascades
and marble mountains of california westward. Snow levels are
expected to begin around 3500 feet, falling to the 1500 to 2000
foot range as precipitation tapers off. Notably, the higher snow
levels than we've seen lately also mean that the atmosphere will
be able to hold more water, so mountain snowfall is likely to be
more significant during this time period. Preliminary amounts for
this frontal system appear to be 5 to 10 inches above 4kft, with
10 to 15 inches possible above 6kft.

Tuesday and Wednesday look to be a relative break in the
precipitation action. However, due to timing differences in the
models and a cold air mass lingering over the forecast area, some
light rain and snow showers will still be possible, especially
along and near northwest facing slopes in the afternoon hours.

The next major shortwave trough in the northwest flow is expected
to arrive on Thursday, with snow levels around 2.5kft. With the
upper level trough likely to have reoriented along or near the
west coast, we'll probably see a little more southwest flow
enhancement to the precipitation with that one. Thus, it appears
march is most likely to come in lion-like.

Overall, long range guidance is indicating march will, most
likely, be colder than normal with above average precipitation
for our forecast area. For early march, the latest GEFS mean and
cfsv2 indicate that the pressure pattern is likely to shift
westward enough to bring in more southwest flow weather systems
during the first week of the month as low pressure gears up in the
gulf of alaska. Currently, it appears this will be followed by a
shift to west flow track weather systems for the 2nd week of the
month. Btl

Mfr watches warnings advisories
Or... Winter weather advisory until 1 pm pst this afternoon for
orz027-028.

Freeze watch from this evening through Friday morning for
orz021-022.

Winter weather advisory until 1 pm pst this afternoon for
orz021-022.

Winter storm warning until 1 pm pst this afternoon above 1500
feet in the for orz021>026.

Winter weather advisory until 1 pm pst this afternoon for
orz023>026.

Ca... Winter weather advisory until 1 pm pst this afternoon for
caz080-081.

Pacific coastal waters... Small craft advisory for hazardous seas until 10 am pst Friday
for pzz350-356-370.

Hazardous seas warning until 10 am pst Friday for
pzz350-356-370-376.

Bpn trw msc czs btl


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
PORO3 - 9431647 - Port Orford, OR 0 mi47 min NNW 8.9 G 19 43°F 47°F1024.9 hPa (+1.0)
CHAO3 - 9432780 - Charleston, OR 43 mi71 min N 14 G 20 47°F1025.1 hPa

Wind History for Port Orford, OR
(wind in knots)    EDIT      (on/off)   Help
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
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last
24hr
N9
G17
NW12
G15
N9
G14
N5
NW4
G7
N3
N4
N2
N2
E3
SE14
G17
S14
G20
N9
G16
W1
G7
N5
G9
N2
N5
N1
G4
N9
G21
N9
G13
N16
G23
N12
G17
NW7
G12
NW9
G19
1 day
ago
S18
S21
S19
G23
S17
G21
SE16
G20
SE13
G17
SE11
G15
SE16
SE11
SE12
G15
SE5
G11
NE6
N2
G5
NW4
N3
N5
N4
N3
NW4
N3
N5
G9
N8
G11
NW10
NW8
G15
2 days
ago
N8
G12
NW9
G14
NE5
N4
G7
NW4
NW3
N4
G7
N4
N6
N5
N5
W2
G6
N4
N2
N3
E4
E5
G9
SE11
G15
SE11
G17
SE14
SE16
G20
SE14
G19
SE14
G18
SE14
G17

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brookings, Brookings Airport, OR47 mi51 minNNW 7 G 1510.00 miLight Rain44°F32°F63%1025.2 hPa

Wind History from BOK (wind in knots)
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
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hr--NW9NW11
G15
NW8NW7NW5N64N4CalmCalmE43SE6CalmCalmE3E3N10
G18
W6N4NW8NW8
G17
N7
G15
1 day agoS9S6S8SE7SE3E335SE4E44CalmCalmCalmCalmNE5CalmCalmCalmCalmNW6NW7NW8NW8
2 days agoN8NW9N9
G14
N5CalmN4N4N5NE4NE4NE5NE7NE65CalmCalm335454SE6S10

Tide / Current Tables for Port Orford, Pacific Ocean, Oregon
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Port Orford
Click for Map
Thu -- 12:16 AM PST     Moonset
Thu -- 03:51 AM PST     7.25 feet High Tide
Thu -- 07:04 AM PST     Sunrise
Thu -- 10:45 AM PST     1.19 feet Low Tide
Thu -- 10:56 AM PST     Moonrise
Thu -- 04:55 PM PST     5.12 feet High Tide
Thu -- 05:58 PM PST     Sunset
Thu -- 10:11 PM PST     2.68 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.85.16.277.26.85.94.63.22.11.41.21.62.43.44.34.95.14.94.33.632.72.8

Tide / Current Tables for Wedderburn, Rogue River, Oregon
   EDIT      (on/off)   Help   One Week of Data
Wedderburn
Click for Map
Thu -- 12:15 AM PST     Moonset
Thu -- 03:50 AM PST     6.57 feet High Tide
Thu -- 07:03 AM PST     Sunrise
Thu -- 10:51 AM PST     1.11 feet Low Tide
Thu -- 10:57 AM PST     Moonrise
Thu -- 04:55 PM PST     4.73 feet High Tide
Thu -- 05:58 PM PST     Sunset
Thu -- 10:20 PM PST     2.40 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.44.65.66.46.66.25.44.2321.31.11.52.23.144.54.74.543.32.72.42.5

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 (17,4,5,8)
      (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.