Kalama, WA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Kalama, WA

April 21, 2024 5:36 AM PDT (12:36 UTC) Change Location
Sunrise 6:11 AM   Sunset 8:09 PM
Moonrise 5:07 PM   Moonset 4:25 AM 
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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.

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Marine Forecasts
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PZZ210 Columbia River Bar- 238 Am Pdt Sun Apr 21 2024

In the main channel -

General seas - 4 to 6 ft through Monday morning.

First ebb - Ebb current of 4.53 kt at 400 am Sunday. Seas 7 ft.

SEcond ebb - Ebb current of 3.91 kt at 414 pm Sunday. Seas 7 ft.

Third ebb - Ebb current of 5.0 kt at 436 am Monday. Seas 6 ft.

PZZ200 238 Am Pdt Sun Apr 21 2024

Synopsis for the southern washington and northern oregon coast - A thermal trough strengthens along the south oregon coast today then weakens Tue. NExt shift in winds later Tue into Wed as a weakening pacific front approaches.


7 Day Forecast for Marine Location Near Kalama, WA
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Area Discussion for - Portland, OR
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FXUS66 KPQR 211044 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 330 AM PDT Sun Apr 21 2024

SYNOPSIS
Cooler on Sunday with mainly dry weather and seasonable temperatures. Widespread frost is expected Sunday night over the Upper Hood River Valley, north Clark County lowlands, south WA/north OR Cascade foothills, and north OR Coast Range/Willapa Hills.
Becoming warmer with more dry weather Monday into Tuesday as low-level offshore flow develops. Cool and showery conditions are likely to return late in the week as an upper level trough settles over the area.

SHORT TERM
SUNDAY THROUGH TUESDAY NIGHT...Radar observations from early Sunday morning depicted isolated post-frontal showers occurring over southwest WA, the north Oregon coast, and north Coast Range.
Elsewhere, conditions were dry with partly to mostly clear skies, calm winds, and temperatures in the 40s. Expect isolated showers to continue in the aforementioned areas through Sunday afternoon before diminishing in the evening. Conditions will otherwise stay dry with seasonable temperatures; the deterministic NBM suggests afternoon high temps in the low 60s, except 50s at the coast.

Clear skies and light winds should allow for frost to develop in some areas Sunday night. It appears temps will stay a bit too warm for frost along the I-5 corridor from Kelso to Eugene. However, widespread frost is expected over the coldest zones, which includes the Upper Hood River Valley, north OR Coast Range, Willapa Hills, and south WA/north OR Cascade foothills. These zones have a 60-90% chance for overnight lows below 35 degrees. Given these probabilities and the high confidence involved, decided to issue a Frost Advisory for the aforementioned areas as temps are likely to fall to around 32-35F. Also decided to include the north Clark County lowlands for temps right around 34-35F in the Battle Ground area. Cannot completely rule out areas of frost in the Hillsboro area as well, but the current forecast is slightly too warm to justify the headline.

Conditions will warm up quickly Monday into Tuesday as an upper level shortwave ridge moves over the region and low-level offshore flow develops. Models suggest a mix of sun and high clouds both days.
Expect temperatures to warm to 66-70F Monday afternoon and 68-74F on Tuesday across the interior lowlands and low to mid 60s at the coast.
The probability for high temps above 70 degrees peaks on Tuesday over the Portland/Vancouver metro and Willamette Valley at 60-80%. -TK

LONG TERM
WEDNESDAY THROUGH SATURDAY NIGHT...The GEFS/ENS/GEPS ensemble mean all show 500 mb flow veering to the west on Wednesday in response to a weak upper level trough brushing the forecast area to the north. Models and their ensembles continue to suggest the bulk of precipitation with this system will fall over British Columbia and far northwest WA, with very little to no rain at all across southwest WA and northwest OR. NBM PoPs remain at 10-20% chance in the lowlands and 20-35% in the mountains. Temperatures are shaping up to be right around normal for this time of year Wednesday afternoon.

Conditions will become noticeably cooler on Thursday as highs fall into the 50s across the area. This is in response to a cool upper level trough that is set to move overhead late in the week, bringing higher chances for rain. While NBM 6-hr PoPs only peak around 60-70% in the lowlands, 24-hr PoPs peak around 80-85%. This is due to model timing differences. Only a very small number of ensemble members are showing no rain at all, suggesting rain is likely to occur at some point on Thursday and/or Friday. According to the NBM, the probability of receiving no measurable rain at all on Thursday and Friday is around 10%, which seems reasonable based on ensemble guidance. While confidence is high at least some measurable rain will fall late in the week, confidence is low regarding exact rain amounts as QPF plumes from the ENS/GEFS/GEPS continue to show a large degree of model spread as some members are at zero while other members are around or even slightly over 1 inch. The NBM is showing a 20-40% chance for 24-hr rain amounts in excess of 0.25" across all of northwest OR and southwest WA, except 40-60% in the mountains. -TK

AVIATION
Widespread VFR under generally clear skies with lingering clouds along the Coast and Cascades which could obscure the ranges at times. There is a 10-15% probability of IFR fog roughly from KUAO to K77S through 17Z Sun per HRRR guidance. Also a weak disturbance moving into WA may bring an increase in showers over southwest WA this afternoon into early evening.

Notes: The ASOS at KTTD is only available via the dial in option.
The AWOS at KMMV is still out of commission. As it is not maintained locally by the National Weather Service, there is no estimated time of repair.

PDX AND APPROACHES...VFR expected next 24 hours. There is up to 10% probability for fog 12-16Z Sun.
/mh

MARINE
Winds winding down as high pressure resides over the waters. Seas rather choppy at 6 to 9 ft at 7 to 9 seconds.
Guidance indicating the period will increase after 8 AM this morning so will have a Small Craft Advisory until then.
The next surge of winds will arrive late this afternoon where we will likely see marginal Small Craft Advisory winds again as a thermal trough strengthens along the south Oregon coast. Will initially start a Small Craft Advisory in the south zones PZZ253,273; then north to PZZ272 later this evening with wind gusts 25-30 kt and steep, choppy seas. May eventually need to expand the Small Craft Advisory further north Monday, but marginal case at this time. Later Monday into Tuesday, the thermal trough begins to weaken as will the winds. However various guidance a bit different in timing of this change.

PQR WATCHES/WARNINGS/ADVISORIES

OR...Frost Advisory from 11 PM this evening to 8 AM PDT Monday for ORZ104-106-121-123.

WA...Frost Advisory from 11 PM this evening to 8 AM PDT Monday for WAZ202-203-205-208.

PZ...Small Craft Advisory until 8 AM PDT this morning for PZZ251>253- 271>273.

Small Craft Advisory from 5 PM this afternoon to 11 PM PDT Monday for PZZ253-273.

Small Craft Advisory from 10 PM this evening to 11 PM PDT Monday for PZZ272.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
KLMW1 1 mi79 min 30.37
LOPW1 - 9440422 - Longview, WA 9 mi79 min 52°F30.37


Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KKLS SOUTHWEST WASHINGTON RGNL,WA 9 sm40 mincalm10 smOvercast43°F39°F87%30.39
KSPB SCAPPOOSE INDUSTRIAL AIRPARK,OR 16 sm43 minW 0310 smClear36°F32°F87%30.38
Link to 5 minute data for KKLS


Wind History from KLS
(wind in knots)
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Tide / Current for Vancouver, Columbia River, Washington (dubious accuracy)
   
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Vancouver
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Sun -- 01:44 AM PDT     0.11 feet Low Tide
Sun -- 05:24 AM PDT     Moonset
Sun -- 06:13 AM PDT     Sunrise
Sun -- 06:22 AM PDT     1.51 feet High Tide
Sun -- 02:12 PM PDT     0.07 feet Low Tide
Sun -- 06:05 PM PDT     Moonrise
Sun -- 06:39 PM PDT     1.37 feet High Tide
Sun -- 08:05 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Vancouver, Columbia River, Washington (dubious accuracy), Tide feet
12
am
0.5
1
am
0.2
2
am
0.1
3
am
0.4
4
am
0.8
5
am
1.3
6
am
1.5
7
am
1.5
8
am
1.3
9
am
1.2
10
am
1.2
11
am
1
12
pm
0.7
1
pm
0.3
2
pm
0.1
3
pm
0.2
4
pm
0.6
5
pm
1
6
pm
1.3
7
pm
1.4
8
pm
1.2
9
pm
1.1
10
pm
1
11
pm
1



Tide / Current for Knappa, Knappa Slough, Columbia River, Oregon
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Knappa
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Sun -- 01:12 AM PDT     7.75 feet High Tide
Sun -- 05:28 AM PDT     Moonset
Sun -- 06:16 AM PDT     Sunrise
Sun -- 08:03 AM PDT     0.82 feet Low Tide
Sun -- 01:31 PM PDT     6.99 feet High Tide
Sun -- 06:09 PM PDT     Moonrise
Sun -- 08:04 PM PDT     1.13 feet Low Tide
Sun -- 08:10 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Knappa, Knappa Slough, Columbia River, Oregon, Tide feet
12
am
7
1
am
7.7
2
am
7.5
3
am
6.6
4
am
5.2
5
am
3.7
6
am
2.3
7
am
1.2
8
am
0.8
9
am
1.3
10
am
2.6
11
am
4.3
12
pm
5.9
1
pm
6.8
2
pm
6.9
3
pm
6.2
4
pm
5.1
5
pm
3.8
6
pm
2.5
7
pm
1.5
8
pm
1.1
9
pm
1.6
10
pm
3
11
pm
4.8




Weather Map
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GEOS Local Image of Pacific Northwest   
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Portland, OR,



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