Friday, October15, 2021
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Marine Weather and Tides
Pasco, 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 7:12AMSunset 6:11PM Friday October 15, 2021 8:17 PM PDT (03:17 UTC) Moonrise 4:42PMMoonset 1:29AM Illumination 75% Phase: Waxing Gibbous; Moon at 10 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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7 Day Forecast for Marine Location Near Pasco, WA
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location: 46.21, -119.09     debug


Area Discussion for - Pendleton, OR
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FXUS66 KPDT 152313 AFDPDT

Area Forecast Discussion National Weather Service Pendleton OR 413 PM PDT Fri Oct 15 2021

AVIATION. 00Z TAFS . VFR conditions and good flying weather through Saturday, especially for mid-October as high pressure is the dominant feature. Expect few clouds, and any clouds will mainly be cirrus and winds generally 10 kts or less.

PREV DISCUSSION. /issued 252 PM PDT Fri Oct 15 2021/

SHORT TERM . Rest of today through the Weekend . Pronounced onshore flow continues this afternoon, most notably across portions of central and northern washington, where a modest atmospheric river event is underway, bringing widespread showers to the Olympics and northern Cascades. A few of these showers have skirted portions of the central Washington Cascades near Snoqualmie Pass. Further south, under the influence of broad upper ridging, mild, dry, and sunny conditions continue.

As we move through the weekend, the upper air pattern looks to become more amplified. This is well forecast by both deterministic and short range ensembles, which depict a strengthening ridge from the Desert Southwest into portions of the Northern Rockies, and a deepening trough off the Pacific Coast late Saturday into Sunday. The near term impact of this evolving pattern will be increasing temperatures. This has already begun today with temperatures some 10 degrees warmer than yesterday and further heating is forecast for Saturday. Many low elevation spots will see high temperatures 5 to 10 degrees above seasonal normals Saturday, with low elevation locations climbing into the low to mid 70s. Slightly cooler temperatures are forecast on Sunday as increasingly southwesterly flow results in widespread cloud cover ahead of a potent upper trough. This system will eventually bring a front and increasing rain chances Sunday afternoon into Sunday night, especially over the mountains. Right now, precipitation amounts look rather modest with the heavier amounts confined to the Cascades of central and southern Oregon and points west toward the coast. Any low elevation rain looks to be rather light at this time, with perhaps a few hundredths to a tenth of an inch in some areas. Snow levels look to remain rather high, though there will be the potential for some light high mountain snow late Sunday night, generally above 6000-7000 feet. In addition to precipitation, breezy to locally windy conditions may occur especially from far southern into central Oregon Sunday, as noted by the European ensemble extreme forecast index (0.8 to 0.9).

LONG TERM . Monday through Thursday . An upper trough will be draped over the Pacific Northwest to start the long range period. Deterministic and ensemble solutions have come into better alignment regarding the translation of this feature early in the week, developing a cutoff low that migrates across northern California and Nevada on Monday and on into the Rockies by Monday night. This is also depicted when assessing ensemble clusters with little variation in either the location or intensity of this upper wave. This feature may result in some lingering mountain shower activity during the day on Monday, but upper ridging building in quickly behind it, expect activity will shut down rather quickly from west to east. With cooler air spilling in behind the front, some light snow accumulations may occur generally above 5000 to 6000 feet. A brief return of colder drier air is expected due to northerly flow behind the storm system with some areas falling into the 20s and 30s, especially the high valleys of central and southern Oregon.

From midweek on, though there is some disagreement among the ensembles in terms of exact placement, a bit of a blocky pattern appears probable with a high amplitude ridge from the Desert Southwest into the Northern Rockies, and a powerful upper trough off the Pacific Coast. This pattern looks to favor a rather wet period across the West Coast, especially for northern California and Southern Oregon as a series of shortwave troughs affect coastal areas. At this time, odds appear more favorable for meaningful precipitation from the Cascades and southern/central Oregon west to the coast, though more widespread precipitation may occur as on system lifts northward across Oregon and Washington Tuesday night into Wednesday. Either way, with a lengthy period of strong southwesterly flow, expect temperatures may remain above average from mid week into the weekend.

AVIATION . 18Z TAFs . Scattered to broken VFR ceilings can be expected, with the more expansive cloud cover over Washington terminals. Winds to generally remain 10 knots or less through the period. Austin/79

PRELIMINARY POINT TEMPS/POPS. PDT 36 72 39 68 / 0 0 0 10 ALW 42 75 46 71 / 0 0 0 0 PSC 43 72 43 69 / 0 0 0 10 YKM 36 68 39 65 / 0 0 0 10 HRI 40 71 42 69 / 0 0 0 10 ELN 38 66 40 63 / 0 0 0 20 RDM 34 76 36 65 / 0 0 0 20 LGD 41 67 43 68 / 0 0 0 0 GCD 37 75 40 71 / 0 0 0 10 DLS 45 71 46 66 / 0 0 0 20

PDT WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None.

SHORT TERM . 79 LONG TERM . 79 AVIATION . 77


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tri-Cities Airport, WA4 mi24 minN 010.00 miFair58°F42°F56%1019.3 hPa

Link to 5 minute data for KPSC

Wind History from PSC (wind in knots)
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Last 24hrSW10SW9SW8SW12SW10SW9SW9SW9SW50S5S6SE3S9S10S10SW9SW10
G20
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1 day agoSW7SW90SW3SW600SE50E5SW3SW4SW8S9SW7SW8SW11S7SW9SW8SW9SW12
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2 days agoSE6SE6SE40W13
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of PacificNorthwest    EDIT
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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