Monday, September27, 2021
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Marine Weather and Tides
Westport, WA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:06AMSunset 7:06PM Sunday September 26, 2021 11:08 PM PDT (06:08 UTC) Moonrise 8:52PMMoonset 12:08PM Illumination 67% Phase: Waning Gibbous; Moon at 21 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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PZZ110 Grays Harbor Bar- 836 Pm Pdt Sun Sep 26 2021
.small craft advisory in effect through late Monday night... Combined seas 12 to 14 ft. Bar conditions rough. Maximum ebb currents will occur around 900 am and 915 pm Monday.
PZZ100 836 Pm Pdt Sun Sep 26 2021
Synopsis for the northern and central washington coastal and inland waters..A series of fronts will cross the waters over the next few days as a deep low pressure system advances across the northeastern pacific toward haida gwaii. Another strong front will sweep across the waters late Wednesday into Thursday.


7 Day Forecast for Marine Location Near Westport, WA
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location: 46.91, -124.11     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 270324 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 824 PM PDT Sun Sep 26 2021

UPDATE. Only minor adjustments tonight to the POP and Wx grids to match latest radar. Also added a SCA for rough bar conditions at Grays Harbor given recent observations (see marine section).

A vigorous cyclone over the Pacific continues to bring wet and breezy weather to W WA this evening. Much of this activity is supported by diffluence and some exit region dynamics of a 130+kt jet streak at 250-300mb along with PVA supplied by vort maxes located near and within the cyclone. In the lower levels, a weak frontal system near the Coast is being overrun by a stronger frontal system over the Coastal Waters. Intensifying frontogenesis from 925-700mb along with sufficient WAA in this layer is also helping support widespread heavy rainfall.

Overnight, expect rain to continue as the upper level jet and Pacific cyclone move into and near the local area. Winds will remain breeziest through tonight, especially along the Coast and areas nearest the water. Some lightning was noted offshore earlier this evening, with SPC mesoanalysis indicating enough MUCAPE for this isolated threat to continue offshore overnight. Much of the stratiform rain should be confined to the higher terrain of the Cascades by sunrise Monday, with unsettled conditions persisting across the remainder of the area. Scattered showers are likely, with mid level temperatures cooling as the day progresses as the upper level cyclone inches closer. This will make for an unstable environment that will be able to support isolated thunderstorms and numerous convective showers. Coverage will increase during the afternoon and evening as both PVA/mid level cooling and daytime heating work in tandem. Ample deep layer shear could be supportive of a few stronger updrafts capable of producing brief very heavy downpours, locally gusty winds, lightning, and small hail.

Previous discussion included below with an updated marine and aviation section.

Kovacik

PREV DISCUSSION. /issued 303 PM PDT Sun Sep 26 2021/

SYNOPSIS. A series of fronts will move through the area tonight for breezy winds and rain. A more showery pattern Monday and Tuesday with isolated thunderstorms. Another system will move through Wednesday night and Thursday for additional rain and winds. Drier weather over the weekend.

SHORT TERM /TONIGHT THROUGH WEDNESDAY/. A system located offshore of the coast will move across the area tonight. Rain is spreading across much of the coast and into the interior this afternoon, with rain into tonight. The upper low located offshore will strengthen over the next few hours. Increasing southerly winds with this system into this evening. Some uncertainty in guidance as to the exact gusts for the area, but gusts of 40 to 50 MPH possible for the coast (especially immediate coastline), with a Wind Advisory for these areas. Winds will be a bit less for the interior, though gusts of 30 to 35 MPH are expected with a few stronger gusts across western Whatcom/Skagit/San Juan Islands areas into tonight. Winds may be strong enough to bring down tree limbs with leafs on the trees along with isolated power outages. Winds will be breezy into Monday with onshore flow.

A trough will be over the area Monday and Tuesday for more convective showers. A few isolated thunderstorms are possible, especially Monday afternoon. The thunderstorm threat will be more limited on Tuesday, potentially focused in the area of a convergence zone that may develop across the central Puget Sound area. Breezy winds through Tuesday. Cooler weather Monday and Tuesday with highs in the upper 50s to 60s. A possible brief dry period early on Wednesday for the interior with another front moving onshore Wednesday into Wednesday night for rain and winds, especially for the more northern areas. Temperatures in the 60s.

LONG TERM /THURSDAY THROUGH SUNDAY/. A front will move across the area Thursday for rain and breezy winds. Ensembles suggest the strongest winds will be along the coast and northern areas. The front will weaken over the area early Friday as some ridging builds in late Friday. The ridge will be over the area over the weekend for mainly dry weather, although a front may near the area on Sunday for a slight chance of precipitation along the coast, as highlighted in some ensemble guidance. Cooler temperatures Thursday and Friday with the late week front with some warming Saturday and Sunday with the building ridge. JD

AVIATION. Widespread rain and low ceilings will continue through the overnight period, with rain tapering to scattered showers Monday morning. Within the widespread rain overnight, visibility reductions are likely along with the lower ceilings. On average, can expect IFR to MVFR ceilings and vsbys. As scattered showers become the rule on Monday, expect coverage to increase through the afternoon, with showers likely to be convective and perhaps develop into a few thunderstorms. Ceilings will attempt to recover back to VFR for most sites but could remain MVFR along the Coast much of the day. Winds will be breeziest overnight tonight out of the south, with sustained winds still remaining 10-15kts Monday with continued isolated gusts 20-25kts.

KSEA . Rain overnight, tapering to showers Monday. Ceilings (and vsbys at times) IFR- MVFR through early Monday, becoming VFR towards afternoon. A few thunderstorms could develop in the vicinity Monday afternoon. Breezy winds out of the S overnight 12-15kts with gusts 20-25kts, becoming sustained 10-15kts (cannot rule out periodic gusts near 20kts, esp near or within heavier showers) towards the afternoon.

Kovacik

MARINE. Observations this evening around Grays Harbor Bar indicate significant wave heights above 10ft, prompting the issuance of a SCA for rough bar conditions through the overnight period. It's possible that these conditions are largely influenced by the frontal boundaries passing through and that waves may subside overnight into Monday morning. If this is the case, it will be temporary as expected swells in the 10-15ft range to move in rather quickly Monday afternoon. Confidence is high in rough bar conditions redeveloping so have opted to extend the SCA for rough bar through Tuesday morning. For the sake of consistency, have also extended the SCA for the Coastal Waters through Tuesday morning as well, though this will mostly be for wind. It is still important to note that seas will increase Monday afternoon over the Coastal Waters, pushing upwards of 15-20ft over the Outer Coastal Waters. Previous discussion follows:

A much more active weather pattern taking shape across the waters this week. A leading front will arrive onshore early this afternoon before pushing through late tonight and into early Monday. Latest guidance has trended slightly stronger, and confidence has increased that gales will develop ahead of the front over the coastal waters with winds to 35 kt. Current small craft advisories for the other zones remain on track. A second front trails behind on Monday for another round of advisory strength winds across portions of the waters. More significantly, a much larger west swell will arrive, leading to combined seas building to around 15 ft. At this time, confidence was not high enough to definitively say that 15-16 ft waves will impact the coast for a high surf advisory, but conditions will remain hazardous along beaches and coastal fronts nonetheless. Expect a similar situation toward midweek, with the next strong front reaching the waters late Wednesday and pushing onshore through early Thursday. Expect widespread advisory strength winds and possible gales, along with larger seas again following the front.

Kovacik/Kristell

SEW WATCHES/WARNINGS/ADVISORIES. WA . Wind Advisory until 10 PM PDT this evening for Central Coast- North Coast.

PZ . Small Craft Advisory from 11 PM this evening to 8 AM PDT Monday 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-West Entrance U.S. Waters Strait Of Juan De Fuca.

Gale Warning until 11 PM PDT this evening 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 until 6 AM PDT Monday for Admiralty Inlet- East Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland Waters Including The San Juan Islands.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 0 mi92 min S 17 G 26 56°F 54°F1004 hPa
46211 - Grays Harbor, WA (036) 8 mi42 min 55°F13 ft
TOKW1 - 9440910 - Toke Point, WA 16 mi50 min S 22 G 29 59°F 56°F1005.1 hPa
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 45 mi38 min SW 14 G 18 56°F 55°F1003.1 hPa56°F
46243 - Clatsop Spit, OR - 162 48 mi42 min 55°F12 ft

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA9 mi75 minSSW 25 G 3210.00 miOvercast and Windy61°F58°F90%1005.3 hPa

Link to 5 minute data for KHQM

Wind History from HQM (wind in knots)
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1 day agoSE5E3CalmE3CalmCalmE3CalmSE4S6S6S7SW9SW13SW8W9W8W8W9W7SW4W8SW6SW4
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Tide / Current Tables for Westport, Point Chehalis, Grays Harbor, Washington
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Westport
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Mon -- 05:57 AM PDT     6.50 feet High Tide
Mon -- 07:10 AM PDT     Sunrise
Mon -- 10:55 AM PDT     3.51 feet Low Tide
Mon -- 02:11 PM PDT     Moonset
Mon -- 05:06 PM PDT     7.83 feet High Tide
Mon -- 07:03 PM PDT     Sunset
Mon -- 10:28 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.923.34.45.46.26.56.15.24.23.73.53.84.96.17.17.67.87.66.75.23.62.31.4

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Mon -- 12:13 AM PDT     0.00 knots Slack
Mon -- 02:42 AM PDT     1.37 knots Max Flood
Mon -- 06:19 AM PDT     -0.00 knots Slack
Mon -- 07:10 AM PDT     Sunrise
Mon -- 08:58 AM PDT     -1.45 knots Max Ebb
Mon -- 11:57 AM PDT     0.00 knots Slack
Mon -- 02:11 PM PDT     Moonset
Mon -- 02:21 PM PDT     1.28 knots Max Flood
Mon -- 05:32 PM PDT     -0.00 knots Slack
Mon -- 07:03 PM PDT     Sunset
Mon -- 09:20 PM PDT     -2.47 knots Max Ebb
Mon -- 10:28 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.20.71.31.41.10.80.3-0.6-1.3-1.5-1.3-0.800.91.31.20.80.3-0.3-1.2-2.1-2.5-2.4-2

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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