Sunday, August25, 2019 L-36.com


Marine Weather and Tides
East Hill-Meridian, WA

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:16AMSunset 8:04PM Sunday August 25, 2019 3:34 PM PDT (22:34 UTC) Moonrise 12:00AMMoonset 3:43PM Illumination 22% Phase: Waning Crescent; Moon at 25 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
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PZZ135 Puget Sound And Hood Canal- 256 Pm Pdt Sun Aug 25 2019
Tonight..NE wind to 10 kt. Wind waves 1 ft or less.
Mon..N wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Mon night..N wind 5 to 15 kt becoming to 10 kt after midnight. Wind waves 2 ft or less.
Tue..NE wind to 10 kt becoming N 10 to 20 kt in the afternoon. Wind waves 2 ft or less.
Tue night..N wind to 10 kt. Wind waves 1 ft or less.
Wed..N wind to 10 kt. Wind waves 1 ft or less.
Wed night..Light wind. Wind waves 1 ft or less.
Thu..Light wind becoming sw to 10 kt. Wind waves 1 ft or less.
Fri..Light wind becoming variable to 10 kt. Wind waves 1 ft or less.
PZZ100 256 Pm Pdt Sun Aug 25 2019
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will continue through Monday before turning offshore on Tuesday as a thermal trough builds north along the west coast.


7 Day Forecast for Marine Location Near East Hill-Meridian, WA
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location: 47.4, -122.18     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 252220
afdsew
area forecast discussion
national weather service seattle wa
320 pm pdt Sun aug 25 2019

Synopsis A strong ridge of high pressure will begin to build
into the area tonight thru mid-week. Low level onshore flow will
also transition to offshore flow, with downslope winds off the
cascades late Monday into Tuesday. These conditions will work in
tandem to create hot afternoon temperatures and warm nights for
late august across western washington this week. Moderate heat
risk will accompany these warm temperatures. A weak system may
pass by on Thursday, allowing a brief respite in hot conditions,
however ridge may build back Friday into the first half of the
weekend.

Short term tonight through Wednesday
**warm temperatures expected this week**
northwest aloft still dominates the pacific northwest region this
afternoon. Meanwhile in the lower levels, the flow continues
onshore as high pressure remains anchored across the northern
pacific, with a weak trough still noted across eastern washington.

Earlier this morning, a fast moving, weak shortwave trough clipped
the northern sections of the cwa. Although the bulk of the deeper
layer moisture and stronger lift remained displaced across
southeastern bc, the id panhandle, and western montana, a few
showers were able to develop across skagit and whatcom counties.

As of 21z, this shortwave has departed to the east and now resides
across western montana. This activity has largely dwindled this
afternoon tho cannot rule out a light shower or two on the
backside of this wave, as some mid level vorticity remains in
place. Elsewhere, have had some clearing in the mid and upper
levels, though a fair weather CU stratocu field exists across the
majority of the area. Vis satellite loop show some of these clouds
decreasing in coverage, some likely hang around thru the evening.

Low level flow will remain onshore overnight albeit weak so
morning stratus deck should remain largely confined to the coast
Monday morning, perhaps sneaking into parts of the lower chehalis
valley SW interior. In the mid and upper levels, heights will
continue to rise as an expansive, elongated ridge of high pressure
across the pacific california desert SW area builds northward.

Skies should clear nicely overnight with sunny skies for tomorrow.

Any morning stratus in the aforementioned areas will burn off by
late morning. Monday will then be the beginning of a rather warm
week for late august.

**warm temperatures expected Tuesday-Wednesday**
aforementioned ridge of high pressure will continue to build into
the region in the mid and upper levels on Tuesday. Large scale
subsidence associated with this feature should allow for sunny
skies. Meanwhile, in the lower levels, a thermal trough will begin
to build northward toward the washington coast from california.

This will shift the low level pattern from onshore to offshore,
which will begin to create an easterly downslope flow regime off
the cascades. This combined with an upper level ridge will create
hot conditions for this area and for this time of year. These
conditions will carry over into Wednesday, with Wednesday expected
to be the warmest day of the week. Forecast currently calls for
mid-upper 80s for much of the interior, with low 90s for sw
interior and upper 70s-low 80s near bodies of water. The main
concerns regarding these warm temperatures will be:
heat risk: with Tuesday and Wednesday expected to be very warm,
much of the interior can expect moderate heat risk potential.

Those sensitive to heat and or those without adequate cooling or
hydration sources will need to take necessary precautions, some of
which include limiting time spent outdoors as much as possible and
drinking plenty of water.

Fire weather: refer to fire wx section included below; warm
conditions combined with dry, easterly downslope winds off the
cascades will make for rather low rh values. This may elevate fire
danger concerns.

These warm temperatures may then follow us into the extended...

kovacik

Long term Thursday through Sunday On Thursday, the ridge will
begin to dampen across the region as a shortwave trough approaches
the area from the sw. Guidance is having a tough time determining
the amount of moisture associated with this weak system as its
projected path takes it across southern washington into eastern
washington. For now will keep slight chance of showers in for the
far SE portion of the cwa. Enough afternoon destabilization
should yield enough CAPE for a chance for a thunderstorm, mainly
along and east of the crest, which could pose fire concerns.

Despite weak troughing with the shortwave, guidance still keeps
temps in the low-mid 80s, so while it may not be quite as hot as
Wednesday, it may still remain rather warm. Will have to watch
trends over the coming days: more cloud cover and showers could
keep things cooler, whereas a weaker system or a more southerly
track could keep those conditions to our south.

By Friday, the ridge noticeably reestablishes itself across the
area, primarily in response to a deepening closed low across the
northern pacific. Yesterday, guidance wanted to bring this low
towards washington rather quickly with some wetting rain,
essentially ending our brief period of heat. Last few model runs
now slow this system down considerably, with a more noticeable
amplification of the ridge. It remains possible for temps to warm
back up Friday and Saturday now. For now not going as high on
temperatures as the middle of the week, but have nudged temps a
few degrees.

Models then diverge later in the weekend regarding closed pacific
low. Unfortunately, ensembles don't really help clear anything up.

Deterministic ec brings front into the area with showers while
gfs keeps ridge over area. Given solutions in previous runs have
shown potential for showers, re-introduced just a slight chance,
tho it remains possible the closed low could get "cutoff" from
faster westerly flow to the north, which if is the case, western
washington gets to hang onto the ridge. Right now, leaning
slightly towards the more progressive solution, which would favor
the ec a tad.

Kovacik

Aviation Northwesterly flow aloft as an upper level trough
departs the pacific northwest. Onshore flow at the surface.

Generally a mix ofVFR to MVFR this morning with marine stratus.

ExpectVFR for all by late this morning into early this afternoon as
upper level ridging builds over the area. Winds generally light
becoming northerly later this afternoon.

Ksea...VFR CIGS this morning with MVFR possible briefly until 18z-
19z.VFR this afternoon. NE winds becoming SW this afternoon
becoming northerly this evening. Winds 4-8 knots. Jd

Marine Onshore flow continues into Monday. Winds will gradually
weaken this morning. Another round of small craft advisory winds
through the strait possible this evening but for now have forecast
just under criteria and will monitor latest data this afternoon.

Offshore flow returns on Tuesday and will persist through much of
the week. Jd

Fire weather Very warm temperatures and low relative
humidities are expected Tuesday and Wednesday with poor relative
humidity recovery especially Tuesday night into Wednesday morning.

Wednesday will be the warmest and driest day. Thursday will likely
see cooler temperatures and improved relative humidities.

Sew watches warnings advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 15 mi52 min NNW 6 G 7
TCNW1 - 9446484 - Tacoma, WA 15 mi52 min 70°F 57°F1022.8 hPa
WPOW1 - West Point, WA 23 mi34 min S 2.9 G 2.9 65°F 1022.8 hPa (+0.0)56°F
46120 27 mi31 min 63°F 1021.5 hPa55°F
46121 30 mi30 min 68°F 1022.6 hPa59°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA7 mi41 minNNW 48.00 miFair73°F53°F50%1022.6 hPa
Seattle, Seattle-Tacoma International Airport, WA7 mi41 minW 810.00 miPartly Cloudy74°F51°F45%1023.1 hPa
Boeing Field - King County International Airport, WA11 mi41 minWNW 610.00 miPartly Cloudy74°F50°F43%1022.1 hPa
Pierce County-Thun Field, WA21 mi39 minW 410.00 miPartly Cloudy73°F50°F44%1022.7 hPa
Tacoma / McChord Air Force Base, WA23 mi96 minS 610.00 miPartly Cloudy71°F58°F66%1023 hPa
Tacoma, Tacoma Narrows Airport, WA23 mi41 minVar 410.00 miPartly Cloudy69°F53°F57%1022.4 hPa

Link to 5 minute data for KRNT

Wind History from RNT (wind in knots)
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Last 24hr4SW83N7N6N3CalmCalm4N6N3CalmCalmCalmCalmCalmCalmCalmCalmN5N4CalmCalmNW4
1 day agoN6NW5NW8N8N8N5CalmN8N4N8N6N7N6N3CalmS4S4SE5S53S6SW854
2 days agoCalmCalm3SW4CalmCalmS3S3SE3SE3SE4SE4CalmCalmSE3SE3CalmCalmN4N5NW10N8NW9N4

Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Sun -- 12:45 AM PDT     Moonrise
Sun -- 06:18 AM PDT     Sunrise
Sun -- 07:17 AM PDT     0.47 feet Low Tide
Sun -- 02:53 PM PDT     9.84 feet High Tide
Sun -- 04:43 PM PDT     Moonset
Sun -- 07:41 PM PDT     7.30 feet Low Tide
Sun -- 08:03 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.19.58.36.64.62.81.20.50.71.83.45.47.38.89.69.89.58.987.47.37.78.59.4

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Sun -- 12:45 AM PDT     Moonrise
Sun -- 04:00 AM PDT     -0.82 knots Max Ebb
Sun -- 06:18 AM PDT     Sunrise
Sun -- 08:13 AM PDT     0.00 knots Slack
Sun -- 10:37 AM PDT     0.51 knots Max Flood
Sun -- 02:37 PM PDT     -0.00 knots Slack
Sun -- 04:44 PM PDT     Moonset
Sun -- 05:29 PM PDT     -0.38 knots Max Ebb
Sun -- 08:03 PM PDT     Sunset
Sun -- 09:08 PM PDT     0.00 knots Slack
Sun -- 10:04 PM PDT     0.11 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.4-0.6-0.8-0.8-0.8-0.6-0.3-0.10.30.50.50.40.30.1-0.1-0.3-0.4-0.4-0.3-0.2-00.10.1

Weather Map and Satellite Images
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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.
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Wind Forecast for Seattle, WA (18,4,5,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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.