Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 6:45AM||Sunset 7:42PM||Thursday April 2, 2020 6:03 PM PDT (01:03 UTC)||Moonrise 12:01PM||Moonset 2:59AM||Illumination 75%|
7 Day Forecast for Marine Location Near Portland, ORHourly EDIT Help
Area Discussion for - Portland, OR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS66 KPQR 022202 AFDPQR
Area Forecast Discussion National Weather Service Portland OR 302 PM PDT Thu Apr 2 2020
SYNOPSIS. A cool and unsettled pattern continues through the weekend as low pressure remains over the area. However, there may be very light snow accumulations at low elevations through Friday night with a couple inches possible above 1500 feet. An upper low slides just west and then south of the area Saturday with the bulk of precipitation staying over southwest Oregon. Dry weather may return early next week, but it's far from certain.
SHORT TERM. Tonight through Sunday . Main concerns revolve around potential for very light snow accumulations tonight and early Friday across the lower interior elevations. A slightly cooler air mass will drop south to over the CWA tonight following the short wave bringing an increase to showers activity today. Primary snow level will fall to around 500 feet under a 1200 foot freezing level. Valley temperatures tonight will locally reach the lower 30s with the mid 30s possible across the Portland Metro. Showers will diminish this evening as the short wave continues moving southeast of the region, however, the next short wave in the train will start spreading very light QPF across the northern CWA tier by daybreak Friday. Certainly do not see any significant snow amounts with just a couple hundredths of liquid equivalent here or there. The key phrase for elevations below 1000 feet will be "Little or no snow accumulation," however, just about anybody near sea level from Salem/Lincoln City northward could see snow flakes in the air Friday morning. Snow levels rise as warming occurs during the day, but never really escapes the higher foothills.
Conditions dry out by late Friday evening, but then a closed low approaches the coast from the west-northwest. Models have been largely pushing precip to our south, but this morning's 12Z models did bring some rain/snow across lane County by early Saturday morning. The upper low opens up into a negatively tilted trough swinging northeast across up Saturday evening. Most of the convective energy will push southeast of the CWA, however, the central Cascades may end up in a bit of a deformation zone with a couple inches of snow.
By Sunday, another shortwave drops south along the flow and merges with the Saturday trough remnants to begin developing a cut-off upper low just offshore the OR/CA border. This will send additional precip north across the area, but it also appears to be coming with a modestly warmer air mass. Main uncertainty fro Sunday will be where does a wrap around deformation band set up with potential to bring 0.25-0.50" of precip. Snow levels appear to be 3500-4000 feet at this time, but may end up bringing a decent late season snowfall the some portion of the Cascades if everything comes together. /JBonk
LONG TERM. Sunday night through Thursday . No significant changes made due to models continuing to struggle with upper long wave pattern. Remaining previous long term discussion follows: While models have continued to struggle with the general pattern late in the period, there is a trend in the models early next week, suggesting ridging potentially building in, lessening the chances for showers again Monday and Tuesday. Deterministic GFS and ECMWF from 00Z in some agreement with dry weather as split flow over the region or light onshore flow. However 00Z ECMWF ensemble members are show potential for a wetter pattern developing Wednesday and Thursday. /mh
AVIATION. Cool northwesterly flow aloft will continue through Friday. A weak disturbance will continue to move across the region this afternoon. Expect mainly VFR conditions through tonight, with occasional periods of MVFR possible under isolated showers. Showers will gradually decrease late this afternoon. Another weak disturbance will move across the region late tonight into Friday morning and could bring occasional light showers or drizzle after midnight along the coast and after sunrise inland, with patchy MVFR possible. Friday afternoon should be a near repeat of today, with showers decreasing late.
PDX AND APPROACHES . Mainly VFR through tonight, with periods of MVFR possible under isolated showers. Showers will decrease late this afternoon, but another disturbance may bring some light showers or drizzle after 12Z Friday, with occasional MVFR possible through the morning. Showers expected to gradually decrease Friday afternoon.
MARINE. Rather tranquil conditions expected across the waters for the next several days with winds generally less than 15 kt and seas in the 3 to 5 ft range. High pressure and weak thermal pressure sits offshore over the weekend and will maintain winds around 10 to 15 kt, with seas in the 4 to 6 ft range.
PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . None.
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This discussion is for Northwest oregon and Southwest Washington from the Cascade crest to 60 nm offshore. This area is commonly referred to as the forecast area.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|LOPW1 - 9440422 - Longview, WA||42 mi||63 min||47°F||1022.6 hPa (-1.0)|
|TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR||66 mi||63 min||50°F||1024.2 hPa (-0.3)|
|ASTO3 - 9439040 - Astoria, OR||74 mi||63 min||SW 1 G 5.1||47°F||49°F||1023.2 hPa (+0.0)|
Wind History for Longview, WA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Pearson Airfield, WA||6 mi||2.2 hrs||SW 5||10.00 mi||Overcast||49°F||37°F||64%||1022.9 hPa|
|Portland, Portland International Airport, OR||7 mi||2.2 hrs||NNW 3||10.00 mi||Mostly Cloudy||49°F||36°F||61%||1023 hPa|
|Portland-Hillsboro Airport, OR||14 mi||2.2 hrs||Var 3||10.00 mi||Mostly Cloudy||50°F||36°F||59%||1022.6 hPa|
|Portland, Portland-Troutdale Airport, OR||15 mi||2.2 hrs||WSW 8||10.00 mi||Light Rain||48°F||36°F||63%||1023.1 hPa|
|Scappoose Industrial Airpark, OR||19 mi||2.2 hrs||ESE 3||10.00 mi||Overcast||48°F||37°F||66%||1022.7 hPa|
|Aurora State Airport, OR||20 mi||2.2 hrs||Var 3||10.00 mi||Overcast||49°F||36°F||61%||1023.1 hPa|
Link to 5 minute data for KPDX
Wind History from PDX (wind in knots)
|1 day ago||E||NW||W||W||SW||SW||SW||S||S||S||S||SW||SW||S||SW||S||S||S||SW||S||SW||S||SW|
|2 days ago||SW|
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GEOS 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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Portland, OR (21,6,7,8)(on/off)  Help
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