Monday, March18, 2019 L-36.com


Marine Weather and Tides
SeaTac, WA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:14AMSunset 7:20PM Monday March 18, 2019 6:44 PM PDT (01:44 UTC) Moonrise 3:27PMMoonset 5:21AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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- 233 Pm Pdt Mon Mar 18 2019
.small craft advisory in effect until 11 pm pdt this evening...
Tonight..E wind 15 to 25 kt becoming N 5 to 15 kt after midnight. Wind waves 2 to 4 ft subsiding to 2 ft or less after midnight.
Tue..Variable wind 5 to 15 kt. Wind waves 2 ft or less.
Tue night..SE wind 10 to 20 kt becoming variable to 10 kt after midnight. Wind waves 1 to 3 ft subsiding to 1 ft or less after midnight.
Wed..NE wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Wed night..S wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..S wind 5 to 15 kt. Wind waves 2 ft or less.
Thu night..S wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Fri..S wind to 10 kt. Wind waves 1 ft or less.
Sat..Light wind. Wind waves less than 1 ft.
PZZ100 233 Pm Pdt Mon Mar 18 2019
Synopsis for the northern and central washington coastal and inland waters..Surface high pressure will remain over the region for the next several days with offshore flow. Weak fronts will reach the area late in the week.


7 Day Forecast for Marine Location Near SeaTac, WA
   Hourly   EDIT   Help
location: 47.42, -122.28     debug


Area Discussion for - Seattle, WA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 ksew 182152
afdsew
area forecast discussion
national weather service seattle wa
300 pm pdt Mon mar 18 2019

Synopsis A strong upper level ridge along with low level offshore
flow will give another day of record breaking high temperatures on
Tuesday. A weak front arriving from the south could bring showers to
western sections on Thursday. Another weakening front will bring
some rain later Friday and Friday night. An upper trough will bring
some showers and near normal temperatures over the weekend.

Short term tonight through Thursday Satellite imagery shows
zero clouds over the region. High temperatures have broken records
today at ksea and kuil, so far, with some other places flirting with
records. Tuesday should bring more of the same--sun and record high
temperatures, with highs mostly in the 70s. The upper ridge will
have drifted to the northeast a bit, but surface flow will still be
offshore.

A slow cooling trend will commence Wednesday, with the upper level
ridge far enough away that heights over western washington will be
distinctly lower. Offshore surface flow will still keep temperatures
up over the interior, with highs near 70. Flow will probably turn
onshore at the coast, giving lower temperatures there, with highs
in the low to mid 60s.

Upper flow will become more southerly on Thursday. Models have a
weak upper trough which allows a little moisture into the area. Have
followed ensemble means which have low chance pops on the coast and
over the olympics on Thursday. There will be more clouds, and the
offshore surface flow will be gone, so highs will be in the mid 50s
to low 60s. Burke

Long term Friday through Monday Models have a negatively tilted
trough reaching the coast Friday afternoon and moving inland Friday
night. Though the front may be falling apart as it moves inland, it
is probably good for at least one period of categorical pops Friday
night or Saturday. Precipitation will turn more shower Saturday
afternoon and showers will taper Sunday. Monday looks pretty dry as
an upper ridge briefly builds over the area. Temperatures will be
normal to a little above normal through the period. Burke

Aviation Upper level ridge over western washington will keep the
air mass stable and dry. Easterly flow aloft will turn more
southeasterly later this afternoon. Surface high pressure area over
southern british columbia and east of the cascades will lead to
continued offshore flow at the surface. ExpectVFR conditions to
continue. Winds generally northeasterly from 5-15 knots, a few
easterly gusts up to 28 knots around the puget sound into this
evening.

Ksea...VFR conditions. Easterly winds will continue through this
evening becoming more northerly into tonight. Winds generally up to
15 knots with gusts near 28 knots through this evening. Jd

Marine Offshore flow will continue with surface high pressure
east of the cascades. Breezy winds near the gaps in coastal terrain.

Strongest east wind is expected to be at the west entrance of the
strait of juan de fuca. Offshore flow will continue into tomorrow
before easing middle of the week with the return of fronts later
this week.

Hydrology River flooding is unlikely over the next seven days.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 5 am pdt Tuesday for 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 until 11 am pdt Tuesday for coastal waters
from CAPE flattery to james island out 10 nm-west entrance
u.S. Waters strait of juan de fuca.

Small craft advisory from 11 pm this evening to 5 am pdt Tuesday
for coastal waters from james island to point grenville 10
to 60 nm.

Small craft advisory from 2 am to 11 am pdt Tuesday for coastal
waters from CAPE flattery to james island 10 to 60 nm.

Small craft advisory until 11 pm pdt this evening for puget
sound and hood canal.



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
TCMW1 - 9446482 - Tacoma Met, WA 12 mi45 min ENE 6 G 13
TCNW1 - 9446484 - Tacoma, WA 13 mi45 min 1018.3 hPa (-1.4)
WPOW1 - West Point, WA 19 mi45 min NNE 6 G 7 56°F 1019.2 hPa (-1.2)39°F
46120 24 mi54 min N 5.8 58°F 1018.1 hPa40°F
46121 26 mi50 min 61°F 1017.9 hPa40°F
46125 38 mi47 min 3.9 51°F 1018.8 hPa44°F

Wind History for Tacoma MET, WA
(wind in knots)    EDIT      (on/off)   Help
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
3
PM
4
PM
5
PM
6
PM
Last
24hr
N5
G12
NW5
G8
S2
N4
N5
N8
G11
N9
E1
SE3
E3
G6
SE4
E5
E2
SE3
SE2
W1
N1
W4
NW6
G9
NW9
G12
W7
NW8
NE8
G15
NE6
G13
1 day
ago
W7
W8
W8
W6
W5
N6
NE3
NW3
NE3
NW2
N2
SE4
SE3
SE5
SE3
SW2
N6
N4
N11
N8
G11
W5
N6
N10
NW8
2 days
ago
N7
N7
G11
W4
G7
W4
NW6
N1
N3
E3
E1
W1
N4
E2
E4
SE3
E2
NW2
W6
W6
W5
W4
NW5
W7
W8
W7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seattle, Seattle-Tacoma International Airport, WA2 mi52 minE 17 G 2410.00 miFair72°F24°F17%1019.5 hPa
Renton Municipal Airport, WA6 mi52 minE 11 G 2110.00 miFair73°F25°F17%1018.9 hPa
Boeing Field - King County International Airport, WA8 mi52 minESE 10 G 1710.00 miFair73°F19°F13%1018.6 hPa
Tacoma, Tacoma Narrows Airport, WA19 mi52 minNNE 910.00 miFair68°F32°F26%1018.4 hPa
Tacoma / McChord Air Force Base, WA21 mi1.8 hrsN 810.00 miFair73°F42°F33%1018.7 hPa
Pierce County-Thun Field, WA22 mi50 minVar 310.00 miFair75°F21°F13%1017.9 hPa

Wind History from SEA (wind in knots)
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
3
PM
4
PM
5
PM
6
PM
Last 24hrN8N9N13N9N9N7N12N14N13N12NE11NE12N10N12NE13N13NE12NE13NE14
G25
E17
G25
E7
G17
E16
G20
E16
G20
E17
G24
1 day agoN4N5N6N4N6N5N4N4NE3N4NE3N5N5NE8NE5NE7N8N8N10N10N11N9N11N10
2 days agoN7N7N7N7N9N8N6N4N6N6NE7NE8N8NE4NE6N3CalmW5W4Calm3W6W5NW5

Tide / Current Tables for Des Moines, Washington
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Des Moines
Click for Map
Mon -- 04:26 AM PDT     12.12 feet High Tide
Mon -- 06:20 AM PDT     Moonset
Mon -- 07:16 AM PDT     Sunrise
Mon -- 10:06 AM PDT     5.88 feet Low Tide
Mon -- 03:06 PM PDT     10.48 feet High Tide
Mon -- 04:26 PM PDT     Moonrise
Mon -- 07:19 PM PDT     Sunset
Mon -- 10:03 PM PDT     -0.78 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
3.86.69.211.1121211.19.57.86.45.96.27.38.79.910.510.18.86.84.41.9-0-0.8-0.2

Tide / Current Tables for Skagit Bay, 1 mile N of Rocky Point, Washington Current
   EDIT      (on/off)   Help   One Week of Data
Skagit Bay
Click for Map
Mon -- 02:03 AM PDT     1.02 knots Max Flood
Mon -- 04:22 AM PDT     -0.00 knots Slack
Mon -- 06:22 AM PDT     Moonset
Mon -- 07:17 AM PDT     Sunrise
Mon -- 09:20 AM PDT     -0.95 knots Max Ebb
Mon -- 11:04 AM PDT     0.00 knots Slack
Mon -- 02:08 PM PDT     0.43 knots Max Flood
Mon -- 03:14 PM PDT     -0.00 knots Slack
Mon -- 04:27 PM PDT     Moonrise
Mon -- 07:19 PM PDT     Sunset
Mon -- 09:04 PM PDT     -1.35 knots Max Ebb
Mon -- 10:51 PM PDT     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
0.70.910.80.2-0.2-0.5-0.7-0.9-0.9-0.8-0.10.20.40.40.2-0.2-0.5-0.8-1.1-1.3-1.3-0.90.1

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_P
GOES Local Image of PacificNorthwest    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 Seattle, WA (21,6,7,8)
      (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.