Sunday, May20, 2018 L-36.com


Marine Weather and Tides
Cliffdell, WA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:18AMSunset 8:39PM Sunday May 20, 2018 6:11 PM PDT (01:11 UTC) Moonrise 9:47AMMoonset 12:08AM Illumination 36% Phase: Waxing Crescent; Moon at 6 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- 257 Pm Pdt Sun May 20 2018
Tonight..N wind to 10 kt becoming ne after midnight. Wind waves 1 ft or less.
Mon..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Mon night..N wind 5 to 15 kt becoming ne after midnight. Wind waves 2 ft or less.
Tue..N wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tue night..N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Wed..NW wind to 10 kt. Wind waves 1 ft or less.
Wed night..NW wind to 10 kt becoming S after midnight. Wind waves 1 ft or less.
Thu..S wind to 10 kt becoming n. Wind waves 1 ft or less.
Fri..N wind to 10 kt. Wind waves 1 ft or less.
PZZ100 257 Pm Pdt Sun May 20 2018
Synopsis for the northern and central washington coastal and inland waters..High pres offshore and lower pres east of the ascades will produce onshore flow for much of the forecast period. Winds will be strongest in the central and eastern strait of juan de fuca during the late afternoon and evening hours each day.

7 Day Forecast for Marine Location Near Cliffdell, WA
   Hourly   EDIT   Help
location: 46.92, -121.24     debug


Area Discussion for - Pendleton, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kpdt 202253 aaa
afdpdt
area forecast discussion... Updated
national weather service pendleton or
353 pm pdt Sun may 20 2018
updated aviation discussion

Short term Tonight through Wednesday... The upper level trough
moving onto the coast is undergoing a split. A closed low
circulation is moving into southwest oregon this afternoon and will
be in california by Monday. Meanwhile, southerly flow and
instability ahead of the trough is triggering showers and
thunderstorms over eastern oregon and washington for this afternoon
and evening. Showers will be dissipating in the western portion of
the forecast area this evening while eastern areas will continue to
see some showers overnight. Monday the closed low will be well to
the south but the forecast area is still under the influence of a
weak trough passage resulting in some lingering showers and
thunderstorms over the eastern mountains through the evening.

Tuesday the low begins to lift northward into the western great
basin and will bring some moisture back into eastern oregon for some
more showers and thunderstorms over the eastern mountains during the
afternoon and evening. Wednesday the low weakens but continues to
lift north into idaho. There will be greater instability across the
forecast area on Wednesday and at this point is looks like just
about anywhere in the forecast area could see showers and or a
thunderstorm.

Long term Wednesday night through Sunday... An anomalously warm
and moist airmass remains in place beneath the longwave ridge with
daytime highs 10 to 15 degrees above normal and 90th percentile
precipitable water values through Saturday. Through Friday afternoon
mid-level lapse rates and mid-level winds remain rather weak... Will
likely see similar diurnal convection that we have seen for much of
the previous week continue. The primary threat with these storms
will be slow movement and localized heavy rain. There are still some
model differences beyond Friday but consensus seems to be trending
toward the more consistent ECMWF solution of the past few days. This
would strengthen the ridge slightly ahead of next approaching low,
likely not strong enough to suppress additional pop-up showers
Friday afternoon as the previous runs of the GFS had suggested. As
the upper low approaches the coast Saturday afternoon both mid-level
lapse rates and mid-level winds will increase. This will bring some
potential for some stronger thunderstorms to the inland northwest
that will need to be monitored. Sunday will breezy and cooler with
highs near normal and a continued chance of showers with a slight
chance of thunderstorms. Peck

Aviation 00z tafs...VFR conditions expected through the period.

Scattered showers and isolated thunderstorms, mostly over higher
terrain will dissipate quickly with the loss of surface heating this
afternoon. With rather weak steering flow don't believe showers
currently near pdt alw ykm will be able to make it on station so
just included vcsh. Cloudiness will decrease in coverage through
tomorrow afternoon in subsidence behind a departing trough with
minimal afternoon showers thunder confined to the eastern mountains.

Winds will be light except at the dls with 15-20kts this afternoon
and 12-18kts Monday. Peck

Preliminary point temps pops
Pdt 53 78 53 84 30 10 10 10
alw 53 79 54 86 30 10 10 10
psc 55 82 55 88 20 10 0 0
ykm 52 83 53 87 20 0 0 0
hri 54 81 52 88 20 10 0 0
eln 49 81 49 87 20 0 0 0
rdm 39 77 44 82 20 0 0 10
lgd 49 73 48 79 60 30 20 20
gcd 49 73 48 80 60 20 20 20
dls 52 83 54 89 20 0 0 0

Pdt watches warnings advisories
Or... None.

Wa... None.

91 74 74


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
TCNW1 - 9446484 - Tacoma, WA 67 mi41 min 67°F 51°F1016.9 hPa
TCMW1 - 9446482 - Tacoma Met, WA 67 mi41 min E 4.1 G 6
EBSW1 - 9447130 - Seattle, WA 75 mi41 min NW 2.9 G 9.9 62°F 52°F1017.2 hPa

Wind History for Tacoma MET, WA
(wind in knots)    EDIT      (on/off)   Help
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
3
PM
4
PM
5
PM
Last
24hr
SW12
NW2
NW3
G6
N3
W6
G9
W7
NW5
G8
SW4
SW5
W5
SW5
G8
SW6
W6
S3
SW4
SE2
SW4
SE3
SE4
NW4
NW2
NE3
NE2
NE4
1 day
ago
N2
E4
W1
E2
NW3
NW1
NW3
N2
NW3
N4
NW4
--
N1
W3
NW5
NW3
NW5
NW4
W5
NW2
G5
W4
N3
N4
W4
2 days
ago
W6
W9
G12
W9
W8
W7
W5
W4
W3
W1
SW3
W3
W4
NW4
NW3
N1
NE1
N3
NW6
NW7
N4
NW3
NW3
NW1
NW3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA26 mi75 minVar 510.00 miOvercast48°F45°F89%1016.6 hPa

Wind History from SMP (wind in knots)
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
3
PM
4
PM
5
PM
Last 24hrCalmCalmS3CalmCalmCalmCalmCalmCalmCalmSW3SW3Calm3S455S6S7565SW75
1 day agoCalmCalm343335CalmCalmCalmCalmCalm3--4Calm43Calm3CalmSE3Calm
2 days ago566CalmSW443333Calm34CalmS4CalmCalmCalm3CalmCalmCalmCalmCalm

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
Sun -- 01:13 AM PDT     Moonset
Sun -- 03:51 AM PDT     6.56 feet Low Tide
Sun -- 05:26 AM PDT     Sunrise
Sun -- 08:29 AM PDT     9.83 feet High Tide
Sun -- 10:50 AM PDT     Moonrise
Sun -- 03:40 PM PDT     -1.37 feet Low Tide
Sun -- 08:45 PM PDT     Sunset
Sun -- 11:10 PM PDT     12.51 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.29.686.96.67.1899.79.78.87.252.60.4-1.1-1.3-0.21.94.77.610.111.812.5

Tide / Current Tables for Tacoma, Commencement Bay, Sitcum Waterway, Puget Sound, Washington (sub)
   EDIT      (on/off)   Help   One Week of Data
Tacoma
Click for Map
Sun -- 01:13 AM PDT     Moonset
Sun -- 03:55 AM PDT     6.55 feet Low Tide
Sun -- 05:27 AM PDT     Sunrise
Sun -- 08:39 AM PDT     9.87 feet High Tide
Sun -- 10:51 AM PDT     Moonrise
Sun -- 03:36 PM PDT     -1.60 feet Low Tide
Sun -- 08:45 PM PDT     Sunset
Sun -- 11:07 PM PDT     12.31 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.19.68.16.96.677.98.99.79.89.17.45.12.60.2-1.3-1.5-0.22.257.910.211.812.3

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 Pendleton, OR (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.