Tuesday, February20, 2018 L-36.com


Marine Weather and Tides
Allyn, WA

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 7:03AMSunset 5:44PM Tuesday February 20, 2018 7:37 AM PST (15:37 UTC) Moonrise 9:38AMMoonset 11:09PM Illumination 28% 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
    EDIT      (on/off)   Help
PZZ135 Puget Sound And Hood Canal- 243 Am Pst Tue Feb 20 2018
Today..S wind to 10 kt. Wind waves 1 ft or less. A slight chance of snow in the afternoon.
Tonight..NE wind 5 to 15 kt becoming 10 to 20 kt after midnight. Wind waves 1 to 3 ft. A chance of snow in the evening.
Wed..NE wind 5 to 15 kt becoming S in the afternoon. Wind waves 2 ft or less.
Wed night..SE wind to 10 kt becoming ne 5 to 15 kt after midnight. Wind waves 2 ft or less.
Thu..N wind 5 to 15 kt. Wind waves 2 ft or less.
Thu night..NE wind to 10 kt becoming S after midnight. Wind waves 1 ft or less.
Fri..S wind 10 to 20 kt rising to 15 to 25 kt. Wind waves 2 to 4 ft.
Sat..SW wind 5 to 15 kt becoming 10 to 20 kt. Wind waves 1 to 3 ft.
PZZ100 243 Am Pst Tue Feb 20 2018
Synopsis for the northern and central washington coastal and inland waters..A weak 1018 mb low will move southeast through the offshore waters today and onto the central oregon coast tonight. Another weak system will move rapidly southward through the waters Wednesday afternoon. A stronger system will move into the waters on Friday and will affect the area through the upcoming weekend.

7 Day Forecast for Marine Location Near Allyn, WA
   Hourly   EDIT   Help
location: 47.39, -122.91     debug


Area Discussion for - Seattle, WA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 ksew 201139
afdsew
area forecast discussion
national weather service seattle wa
339 am pst Tue feb 20 2018

Synopsis A weak disturbance dropping in from the north will
bring generally light snow to mainly the southwest part of the
state through this evening. Expect a slightly stronger system to
impact the region during the Wednesday afternoon through Thursday
morning time frame. This system will exit the area Thursday
afternoon for clearing and drying from the north. Temperatures
will remain below normal.

Short term
Temperatures over the interior were generally 2-5 degrees colder
than what they were at the same time yesterday. On the coast,
temperatures were about the same or slightly warmer due to the
presence of clouds. Klgx radar showed an area of precipitation
just off the coast at this time. This precip was associated with a
weak upper level disturbance moving south across the offshore wa
waters. It will be off the oregon coast by midday.

Meanwhile, a weak upper level trof over british columbia will move
south over the CWA this afternoon and will be out of the area by
Wednesday. Expect precipitation to develop over mainly the
southern part of the CWA in response to the development of weak
diffluence aloft between the offshore disturbance and the one
dropping in from the north. Of course, the snow levels will remain
quite low; therefore, expect the precip to fall in the form of
snow or a rain snow mix on the lowlands. The heavier precip is
expected over the southwest interior, where a winter weather
advisory is in effect for up to 3 inches of snow. On the central
coast, snowfall amounts are forecast to be generally less than an
inch. Elsewhere across the lowlands, expect a dusting or nothing
at all.

Alas, another (but slightly stronger) system will head south
towards the area during the day Wednesday. The ECMWF solution was
the preferred model because it has been the most consistent with
this system and, also, the other models were starting to lean in
its direction. Expect light snow to develop over the northwest
part of the CWA during the day Wednesday and then quickly
overspread the remainder of the area Wednesday evening. The
lowlands are anticipated to pick up anywhere from a dusting to up
to 3 inches of snow Wednesday night from this system. At this
time, it looks like the heaviest amounts are expected over the
western part of the cwa.

Look for the upper level low to move south across the area on
Thursday, reaching oregon by late Thursday afternoon. Thus, look
for clearing and drying from the north during the day Thursday.

Long term
The pattern looks quite active during this period due to a series
of storms moving across the region from the northwest. The
screaming message is that it will be chilly and wet. Expect a
strong system to impact the area the end of this week for the
possibility of significant lowland snow in some areas, especially
within any convergence zones. Another, possibly potent, lowland
snow-maker might impact the CWA early next week. For now, look
for below normal temps and above normal precip during this period.

Aviation North to northwest flow aloft continues over
western washington this morning. The air mass is stable with areas
of high and mid level moisture. A weak surface low passing southward
over the offshore waters today will spread some light precipitation
into the southern third of the forecast area this afternoon. Areas
of MVFR ceilings with light snow are expected after 18z south of a
line khqm-ktiw withVFR ceilings continuing northward of that line.

Ceilings will improve from the north after 03z-06z withVFR expected
across the region tonight. Near the surface, light east-southeast
gradients with turn northeasterly tonight as the offshore low moves
into the oregon waters.

Ksea...VFR with increasing high and mid level moisture this morning.

Ceilings may lower to bkn-ovc040-050 in the 21z-00z time frame with
the odd light flurry in the vicinity of the terminal. No
accumulation is expected. Ceilings with lift this evening with
just scattered or broken high clouds into Wednesday morning. Light
southeast wind this morning will shift to north-northeast 7 to 11
kt this evening. 27

Marine A 1018 mb low near 49n 130w will drop SE through the
washington offshore waters today and move onto the central oregon
coast tonight. Southeast winds up to 25 knots are expected at
times over the coastal waters today as the low passes by to the
west. Winds will back to northeasterly behind the low and will
increase to small craft advisory strength in the northern inland
waters and through the western two-thirds of the strait of juan de
fuca tonight. Small craft advisories have been extended through
tonight for the coastal waters and have been issued for tonight in
the northern inland waters and in the western and central strait.

A weaker low will move rapidly southward through the waters
Wednesday night. At this time, winds throughout the waters are
expected to remain at or below 20 knots.

A stronger system will arrive Friday and will remain around the
waters through the upcoming weekend. This system is likely to
bring at least small craft advisory strength winds to all waters,
and could bring gale southerlies or westerlies to some waters.

Albrecht

Hydrology
River flooding is not expected the next 7 days.

Sew watches warnings advisories
Wa... Winter weather advisory from 10 am this morning to 10 pm pst
this evening for lower chehalis valley area-southwest
interior.

Pz... Small craft advisory until 3 am pst Wednesday for coastal waters
from CAPE flattery to james island 10 to 60 nm-coastal
waters from CAPE flattery to james island out 10 nm-coastal
waters from james island to point grenville 10 to 60 nm-
coastal waters from james island to point grenville out 10
nm-coastal waters from point grenville to CAPE shoalwater
10 to 60 nm-coastal waters from point grenville to cape
shoalwater out 10 nm.

Small craft advisory from 4 pm this afternoon to 3 am pst
Wednesday for central u.S. Waters strait of juan de fuca-
northern inland waters including the san juan islands-west
entrance u.S. Waters strait of juan de fuca.



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
46121 12 mi38 min 33°F 1021.7 hPa25°F
TCMW1 - 9446482 - Tacoma Met, WA 27 mi55 min SSE 1.9 G 2.9
TCNW1 - 9446484 - Tacoma, WA 28 mi55 min 28°F 48°F1022.4 hPa
WPOW1 - West Point, WA 31 mi37 min SE 5.1 G 6 33°F 1022.3 hPa (-0.7)19°F
EBSW1 - 9447130 - Seattle, WA 34 mi49 min SSE 2.9 G 6 32°F 47°F1022.4 hPa
46120 37 mi41 min S 7.8 33°F 1021.5 hPa22°F

Wind History for Tacoma MET, WA
(wind in knots)    EDIT      (on/off)   Help
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
24hr
N18
G23
N16
N17
N16
G20
N12
G16
NE11
G14
N9
G12
N9
G12
N4
G10
N6
G10
N3
NE2
SE2
E3
SE4
SE6
SE5
SE4
SE6
SE3
SE3
S3
S3
S2
1 day
ago
SE6
E6
E3
SE4
G8
NE4
N18
G23
N22
G30
N18
G29
N25
G33
N28
G36
N25
G34
N24
G31
N24
G30
N27
G34
N22
G27
N24
G30
N21
N20
N16
G23
N19
G25
N20
G28
N18
G26
N18
G22
N18
G22
2 days
ago
S8
G12
S10
G15
SW11
G18
SW15
G28
SW24
G32
W24
G32
SW26
G38
SW23
G31
SW19
G27
SW15
G24
S9
G17
SW18
G24
SW23
G30
SW18
G25
SW11
G17
SW11
G19
S5
G10
S10
G15
S13
G16
S11
G16
S11
G15
S8
G15
S3
SE5

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bremerton, Bremerton National Airport, WA10 mi41 minN 010.00 miOvercast22°F19°F92%1023.4 hPa
Shelton, Shelton Sanderson Field, WA17 mi44 minNNE 510.00 miMostly Cloudy29°F24°F82%1021.3 hPa
Tacoma, Tacoma Narrows Airport, WA19 mi44 minSE 310.00 miOvercast29°F19°F69%1022 hPa

Wind History from PWT (wind in knots)
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
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
Last 24hr--------------------NE5SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoS4CalmNE6NE5NE10N9
G21
N16
G23
NE18
G31
NE17
G26
N19
G30
N17
G31
--------------------------
2 days ago--S10S16
G23
SW30
G39
SW22
G38
SW20
G31
SW22
G31
SW19
G32
----SW21
G28
S10
G18
SW14SW18
G23
SW15SW10S15
G20
S11S9S10SW11SW9S11S7

Tide / Current Tables for Lynch Cove Dock, Washington
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Lynch Cove Dock
Click for Map
Tue -- 01:24 AM PST     2.43 feet Low Tide
Tue -- 07:08 AM PST     Sunrise
Tue -- 07:47 AM PST     12.81 feet High Tide
Tue -- 09:37 AM PST     Moonrise
Tue -- 02:16 PM PST     2.84 feet Low Tide
Tue -- 05:43 PM PST     Sunset
Tue -- 08:06 PM PST     10.23 feet High Tide
Tue -- 11:09 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.62.52.74.16.38.81112.412.81210.38.15.83.82.93.24.56.48.39.610.29.98.87.3

Tide / Current Tables for Colville Island, 1 miles SSE of, Washington Current
   EDIT      (on/off)   Help   One Week of Data
Colville Island
Click for Map
Tue -- 02:58 AM PST     0.00 knots Slack
Tue -- 06:04 AM PST     1.64 knots Max Flood
Tue -- 07:07 AM PST     Sunrise
Tue -- 08:59 AM PST     -0.00 knots Slack
Tue -- 09:36 AM PST     Moonrise
Tue -- 12:13 PM PST     -2.51 knots Max Ebb
Tue -- 04:29 PM PST     0.00 knots Slack
Tue -- 05:42 PM PST     Sunset
Tue -- 06:38 PM PST     1.01 knots Max Flood
Tue -- 09:05 PM PST     -0.00 knots Slack
Tue -- 11:09 PM PST     Moonset
Tue -- 11:51 PM PST     -1.66 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-2-1.6-0.800.61.31.61.40.7-0-1.2-2.2-2.5-2.4-1.9-1.1-0.40.30.910.60-0.8-1.5

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 Seattle, WA (10,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Seattle/Tacoma, WA
   (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.