Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Shoreline, 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 7:08AMSunset 7:24PM Thursday March 21, 2019 8:33 AM PDT (15:33 UTC) Moonrise 7:28PMMoonset 6:57AM Illumination 100% Phase: Full Moon; Moon at 15 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- 649 Am Pdt Thu Mar 21 2019
Today..S wind 10 to 20 kt becoming sw in the afternoon. Wind waves 1 to 3 ft.
Tonight..Variable wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less.
Fri..S wind 5 to 15 kt rising to 15 to 25 kt in the afternoon. Wind waves 2 ft or less building to 2 to 4 ft in the afternoon. A slight chance of rain in the morning then a chance of rain in the afternoon.
Fri night..S wind 15 to 25 kt. Wind waves 2 to 4 ft.
Sat..SW wind 5 to 15 kt becoming S in the afternoon. Wind waves 2 ft or less.
Sat night..NW wind 5 to 15 kt becoming N after midnight. Wind waves 2 ft or less.
Sun..Light wind becoming N to 10 kt. Wind waves 1 ft or less.
Mon..N wind 5 to 15 kt becoming s. Wind waves 2 ft or less.
PZZ100 649 Am Pdt Thu Mar 21 2019
Synopsis for the northern and central washington coastal and inland waters..Southerly flow over the coastal waters with developing onshore flow through the strait. A weak front will reach area waters on Friday with strengthening southerlies and significant westerly swell over the coastal waters and west entrance to the strait of juan de fuca Friday night and Saturday.


7 Day Forecast for Marine Location Near Shoreline, WA
   Hourly   EDIT   Help
location: 47.7, -122.42     debug


Area Discussion for - Seattle, WA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 ksew 210932
afdsew
area forecast discussion
national weather service seattle wa
232 am pdt Thu mar 21 2019

Synopsis Low level onshore flow will bring some marine air
inland today resulting in high temperatures nearly 15 degrees
cooler than Wednesday. There will also be an increase in cloud
cover, especially along the coast. A front will bring light rain
and breezy to windy conditions to the area later Friday into
Friday night. Showers and cool conditions are expected on
Saturday. After a dry day on Sunday, another front will move
northeast across the area on Monday.

Short term today through Saturday Areas from about seattle
southward in the interior and along the coast are seeing the
effects of a shallow marine layer this morning. Winds are more
west to southwest, temperatures are mainly in the 40s to lower
50s, and some stratus is being seen along the coast and in the
chehalis gap west of shelton. Conditions from about everett
northward in the interior is seeing the last gasps of dry
northeasterly flow with exposed locations in the mid 50s and
dewpoint temperatures mainly in the 20s to mid 30s. The marine air
will continue to move northward today, but it will not be deep
enough to provide any cloud to the interior north of seattle. Mid
and high level clouds will spread into the area from the southeast
as an upper level low moves inland to the south of the area. Highs
today will be quite a bit cooler than what we saw on Wednesday
with highs in the lower to mid 60s in most of the interior and
only in the upper 50s on the coast.

Clouds will develop and spread into the area from the south and
southwest tonight as the marine layer deepens. Lows tonight will
be more uniform than what we have seen recently with mainly 40s
across the region.

Clouds will thicken from the south on Friday with rain spreading
ne across the area during mainly the afternoon and overnight
hours. Light offshore flow may result in high temperatures
reaching around 60 on Friday before the rain starts.

The combination of a weak upper level trough and onshore flow will
give a cool and showery day to the area on Saturday with
temperatures near normal for late march. Albrecht

Long term Sunday through Wednesday Forecasts for Sunday will
continue to favor the more consistent and drier ECMWF model today
that shows a weak upper trough moving NE of the area Sunday
afternoon and low level flow becoming offshore. Current thinking
is that forecast highs on Sunday will be in the 50s to around 60.

Another NW SE oriented front will lift northeast across the area
later Monday or Monday night as high pressure remains over the
canadian prairies and a strong jet stream pushes systems mainly
into california. The remainder of the period during the early to
middle part of next week will see clouds and a chance of showers
as systems rotate around a trough to the south of the area and get
blocked from moving off to the north by high pressure over western
canada. The extended forecast represents a model blend today.

Albrecht

Aviation Satellite imagery reveals generally clear skies over
western washington early this morning, with some MVFR stratus
popping up over hqm. Aside from some passing cirrus, skies should
remain fairly clear into the morning hours. Clouds will then be on
the increase quickly from the south, tho should remainVFR. A stray
shower would be not impossible this afternoon, especially across
southern TAF sites. The next frontal system will be moving towards
the area tonight and into Friday, providing a much better chance for
showers. Winds will remain on the south side through the period at
under 10 kts.

Ksea...VFR conditions with clouds increasing through the day.

Conditions should remain mostly dry. Winds SE but will likely dance
between SE and SW through much of the period. Speeds under 10kts.

Kovacik

Marine Southerly flow over the coastal waters will support small
craft advisory conditions this morning, with developing onshore flow
through the strait. Winds and seas will ease tonight ahead of a
frontal system that will move into area waters Friday bringing
strengthening southerlies and significant westerly swell, 10 to
12 feet, Friday night rising to 14 feet at 16 seconds Saturday.&&

Hydrology River flooding is unlikely over the next seven days.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 11 am pdt this morning 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.



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
WPOW1 - West Point, WA 3 mi34 min S 18 G 20 48°F 1017.9 hPa (+1.4)44°F
46120 4 mi53 min S 5.8 48°F 1016.5 hPa44°F
46125 18 mi35 min 5.8 47°F 1017 hPa42°F
TCMW1 - 9446482 - Tacoma Met, WA 29 mi52 min SSE 1.9 G 2.9
TCNW1 - 9446484 - Tacoma, WA 30 mi52 min 48°F 48°F1018.7 hPa
46121 33 mi43 min 49°F 1017.7 hPa45°F
PTWW1 - 9444900 - Port Townsend, WA 34 mi52 min W 7 G 11 48°F 47°F1017.9 hPa
SISW1 - Smith Island, WA 48 mi44 min WSW 14 G 17 48°F 1016.8 hPa (+1.3)43°F

Wind History for Seattle, Puget Sound, WA, WA
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boeing Field - King County International Airport, WA13 mi41 minSSE 910.00 miPartly Cloudy47°F39°F77%1018 hPa
Everett Snohomish County, WA16 mi41 minS 710.00 miFair47°F37°F71%1017.2 hPa
Renton Municipal Airport, WA17 mi41 minSSE 310.00 miPartly Cloudy47°F34°F61%1018.7 hPa
Seattle, Seattle-Tacoma International Airport, WA19 mi41 minS 79.00 miMostly Cloudy47°F42°F83%1018.4 hPa
Bremerton, Bremerton National Airport, WA24 mi38 minWSW 310.00 miFair42°F42°F100%1019.7 hPa

Wind History from BFI (wind in knots)
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 24hrNW3NW5N7NW7NW7NW6E11
G21
SE12
G21
SE18
G25
SE12
G19
E10SE6SE8SE8SE5SE4SE6SE7S7SE5SE8S6SE8SE9
1 day agoNW4NW6E10E8E12
G25
SE16
G23
E11
G17
E13E11
G17
E8E7E6SE6SE10
G17
E8E83CalmCalmCalmN3CalmCalmNW4
2 days ago4CalmNW6NW8NW7N8NW7NW5NW3SE10
G17
E6SE5
G17
SE10SE13E5CalmE3CalmCalmN3CalmCalmCalmCalm

Tide / Current Tables for Meadow Point, Shilshole Bay, Washington
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Meadow Point
Click for Map
Thu -- 06:06 AM PDT     12.18 feet High Tide
Thu -- 07:10 AM PDT     Sunrise
Thu -- 07:56 AM PDT     Moonset
Thu -- 12:11 PM PDT     2.18 feet Low Tide
Thu -- 06:07 PM PDT     10.95 feet High Tide
Thu -- 07:23 PM PDT     Sunset
Thu -- 08:28 PM PDT     Moonrise
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
0.21.53.96.89.511.412.211.710.17.85.23.12.22.64.16.38.510.210.910.596.84.22

Tide / Current Tables for Alki Point, 0.3 miles W of, Washington Current
   EDIT      (on/off)   Help   One Week of Data
Alki Point
Click for Map
Thu -- 02:41 AM PDT     0.84 knots Max Flood
Thu -- 06:07 AM PDT     -0.00 knots Slack
Thu -- 07:10 AM PDT     Sunrise
Thu -- 07:56 AM PDT     Moonset
Thu -- 09:03 AM PDT     -0.70 knots Max Ebb
Thu -- 12:34 PM PDT     0.00 knots Slack
Thu -- 03:05 PM PDT     0.68 knots Max Flood
Thu -- 06:16 PM PDT     -0.00 knots Slack
Thu -- 07:24 PM PDT     Sunset
Thu -- 08:28 PM PDT     Moonrise
Thu -- 09:16 PM PDT     -0.68 knots Max Ebb
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
00.50.80.80.70.40-0.3-0.6-0.7-0.6-0.4-0.20.20.50.70.60.40.1-0.2-0.5-0.7-0.6-0.5

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 (11,2,3,4)
      (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.