Friday, March5, 2021
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Marine Weather and Tides
Klickitat, WA

Version 3.4
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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 6:31AMSunset 5:55PM Friday March 5, 2021 12:22 PM PST (20:22 UTC) Moonrise 1:00AMMoonset 10:10AM Illumination 54% Phase: Third Quarter Moon; Moon at 22 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 Klickitat, WA
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location: 46.09, -121.02     debug


Area Discussion for - Pendleton, OR
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FXUS66 KPDT 051744 AFDPDT

Area Forecast Discussion National Weather Service Pendleton OR 944 AM PST Fri Mar 5 2021

Updated aviation discussion below.

UPDATE. Low pressure system offshore has pushed a cold front onto the OR/WA coasts this morning, allowing for scattered rain/snow showers west of the Cascades. Moisture will have a tough time spilling over the Cascades until later this afternoon into Saturday morning. As the main system continues to near the coast, pressure gradients have allowed for breezy conditions to occur through the day today. Southerly winds have kept temperatures rather mild this morning, so have adjusted high temperatures up a bit as some highs could break into the 70s. Southerly winds will also contribute to the potential for windy conditions through the Grande Ronde Valley, so a Wind Advisory is currently in effect for this area until 7 PM. Winds have been trending lower this morning, so may cancel the advisory early if winds do not pick up; will revisit for the afternoon update. 75

AVIATION . 18Z TAFs . Main concerns through the period will be gusty south/southwest winds at KPDT/KALW and KRDM/KBDN with some LLWS 40-50kt at 2000 ft. This will diminish by 21z as winds become more uniform. Otherwise, broken to overcast VFR ceilings expected to develop at all terminals as a front moves through with winds becoming more westerly. Light showers may occur at any terminal, though confidence is greatest at KRDM/KBDN where rain may transition to rain/snow after 05z. Still, impacts to visibilities appear limited at this time. 79

PREV DISCUSSION. /issued 220 AM PST Fri Mar 5 2021/

SHORT TERM . Today through Sunday night . A southwest flow persists over the forecast area with an upper ridge over the Rocky Mountains and an upper trough well off the coast this morning. This flow is fairly dry. A cold front associated with the trough will move slowly toward the forecast area over the next two days. Today the front will be moving into the Cascades, and then tonight and Saturday the moisture with this front will move east of the Cascades over the eastern CWA. However, the system weakens as it moves inland, and much of the moisture will be squeezed out over the Cascades not leaving much moisture left over for the eastern CWA. Will have mainly just mountain rain/snow showers. Snow levels will be fairly high at between 5000-6000 Feet MSL. When the cold front moves across the forecast are, snow levels will lower, but not to any unusual low snow levels for this time of year. In fact, temperatures are expected to remain above normal. Normal for KPDT is 52 deg F, so expect temperatures to remain above normal, even behind the front.

The other concern this morning is tightened pressure gradients from southeast to northwest. This will strong gusty southerly winds in the Grande Ronde Valley, where a Wind Advisory is in effect until 7 PM this evening. It is currently windy in the Grande Ronde Valley, though wind speeds have not yet reached advisory criteria. Will need to monitor this as the Wind Advisory may need to be cancelled if wind speeds don't increase more soon. The pressure gradients will peak out at around 12Z this morning and then gradients will weaken after that. There is also a lack of a cold pool over the Baker Valley, which is not providing the thermal gradient in addition to the pressure gradient to enhance southerly winds. It will also become breezy to windy in the Lower Columbia Basin and adjacent lower elevations and exposed ridges behind the cold front on Saturday, and again on Sunday. 88

LONG TERM . Monday through Friday . Showers will start the early part of next week, mainly across eastern OR. Wednesday through Friday will be mostly dry with the exception of a slight chance of mountain snow showers. There are no significant differences in the deterministic models and ensembles through the period, although big differences begin to emerge late Friday through next weekend.

The parent upper low off the WA coast Sunday night will travel south Monday with the center about 350 miles west of the OR coast Monday night. An upper level diffluent flow will bring scattered showers across eastern OR but chances decrease to slight chance or nothing at all the farther north into eastern WA. The forecast area will be on the cold sector of the upper level jet, and snow levels will be around 2500 feet (3500 feet southeast OR). Despite the low snow levels, it's hard to get excited about snow accumulations in the lower elevations with 12-hours of sun this time of the season. There isn't a lot of upper level support either, and the ensembles show amounts ranging from 1-3 inches in the mountains with the GEFS the highest on QPF and snow.

The closed low will be located off the northern CA coast on Tuesday and will continue to bring a chance of snow in the mountains and valleys of the southern half of eastern OR. The low will be near San Francisco Tuesday night with dry conditions across the forecast area. There is a hint of a weak wave moving south across eastern WA Wednesday morning (stronger on the GFS and Canadian compared to ECMWF) that could bring breezy to windy conditions and possibly a few snow showers to the Cascades but nothing more.

High pressure will build offshore the remainder of the forecast period. The forecast area will be on the front side of the ridge and under a north-northwest flow aloft. There will be a slight chance of mountain snow showers but dry conditions elsewhere. Temperatures will be near seasonal with highs around 45-55 and lows 25-35. Wister/85

PRELIMINARY POINT TEMPS/POPS. PDT 67 37 51 35 / 0 20 40 10 ALW 67 40 52 37 / 0 20 40 10 PSC 68 42 56 36 / 0 20 30 0 YKM 59 35 54 32 / 10 40 10 10 HRI 70 41 55 36 / 0 30 30 0 ELN 53 34 50 31 / 10 30 10 10 RDM 62 31 47 29 / 10 50 40 10 LGD 52 33 43 30 / 0 10 50 10 GCD 61 33 47 31 / 0 10 40 10 DLS 56 39 53 37 / 30 60 20 20

PDT WATCHES/WARNINGS/ADVISORIES. OR . Wind Advisory until 7 PM PST this evening for ORZ049.

WA . None.

SHORT TERM . 75 LONG TERM . 79 AVIATION . 79


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Dalles Municipal Airport, WA33 mi30 minNW 16 G 2310.00 miOvercast50°F36°F59%1014.5 hPa

Link to 5 minute data for KDLS

Wind History from DLS (wind in knots)
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Last 24hrCalmNW7NW10NW12NW3CalmSW3E4E3CalmNW3CalmSE3E4CalmCalmS3NE3CalmCalmCalmNW63NW16
G23
1 day agoCalmCalmCalmCalmCalmCalmCalmNW3CalmCalmCalmS3E3S3W3CalmSE3CalmE3NW3CalmCalmCalmN3
2 days agoNW84W12NW14NW8NW5W7W10CalmCalmNE4NW5W4CalmCalmCalmS3CalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Vancouver, Columbia River, Washington (dubious accuracy)
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Vancouver
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Fri -- 01:05 AM PST     Moonrise
Fri -- 03:36 AM PST     0.74 feet Low Tide
Fri -- 04:44 AM PST     0.76 feet High Tide
Fri -- 06:41 AM PST     Sunrise
Fri -- 07:09 AM PST     0.60 feet Low Tide
Fri -- 10:18 AM PST     Moonset
Fri -- 11:40 AM PST     1.99 feet High Tide
Fri -- 05:32 PM PST     Last Quarter
Fri -- 06:03 PM PST     Sunset
Fri -- 08:13 PM PST     0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.20.90.80.70.80.70.60.711.51.921.71.30.90.70.60.50.20.10.10.50.9

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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