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Marine Weather and Tides
Version 3.4 |
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. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 7:54AM | Sunset 4:20PM | Thursday December 12, 2019 1:36 AM PST (09:36 UTC) | Moonrise 5:04PM | Moonset 8:24AM | Illumination 100% |  |
PZZ130 West Entrance U.s. Waters Strait Of Juan De Fuca- 836 Pm Pst Wed Dec 11 2019
.small craft advisory in effect through Thursday afternoon...
Tonight..S wind 15 to 25 kt. Wind waves 2 to 4 ft. W swell 9 ft at 15 seconds building to 13 ft at 14 seconds after midnight. Rain likely.
Thu..SW wind 15 to 25 kt. Wind waves 2 to 4 ft. W swell 14 ft at 18 seconds building to 16 ft at 16 seconds in the afternoon. A chance of rain in the morning then rain likely and a slight chance of tstms in the afternoon.
Thu night..SW wind 5 to 15 kt becoming 10 to 20 kt after midnight. Wind waves 1 to 3 ft. W swell 16 ft at 16 seconds. Showers likely and isolated tstms in the evening then showers after midnight.
Fri..SW wind 5 to 15 kt becoming to 10 kt in the afternoon. Wind waves 2 ft or less. W swell 14 ft at 16 seconds.
Fri night..SW wind to 10 kt. Wind waves 1 ft or less. W swell 12 ft at 15 seconds.
Sat..SE wind to 10 kt. Wind waves 1 ft or less. W swell 11 ft at 15 seconds.
Sat night..E wind to 10 kt. Wind waves 1 ft. W swell 8 ft at 14 seconds.
Sun..E wind to 10 kt becoming se 5 to 15 kt. Wind waves 2 ft or less. W swell 7 ft.
Mon..SE wind 10 to 20 kt becoming 5 to 15 kt. Wind waves 1 to 3 ft. W swell 7 ft.
.small craft advisory in effect through Thursday afternoon...
Tonight..S wind 15 to 25 kt. Wind waves 2 to 4 ft. W swell 9 ft at 15 seconds building to 13 ft at 14 seconds after midnight. Rain likely.
Thu..SW wind 15 to 25 kt. Wind waves 2 to 4 ft. W swell 14 ft at 18 seconds building to 16 ft at 16 seconds in the afternoon. A chance of rain in the morning then rain likely and a slight chance of tstms in the afternoon.
Thu night..SW wind 5 to 15 kt becoming 10 to 20 kt after midnight. Wind waves 1 to 3 ft. W swell 16 ft at 16 seconds. Showers likely and isolated tstms in the evening then showers after midnight.
Fri..SW wind 5 to 15 kt becoming to 10 kt in the afternoon. Wind waves 2 ft or less. W swell 14 ft at 16 seconds.
Fri night..SW wind to 10 kt. Wind waves 1 ft or less. W swell 12 ft at 15 seconds.
Sat..SE wind to 10 kt. Wind waves 1 ft or less. W swell 11 ft at 15 seconds.
Sat night..E wind to 10 kt. Wind waves 1 ft. W swell 8 ft at 14 seconds.
Sun..E wind to 10 kt becoming se 5 to 15 kt. Wind waves 2 ft or less. W swell 7 ft.
Mon..SE wind 10 to 20 kt becoming 5 to 15 kt. Wind waves 1 to 3 ft. W swell 7 ft.
PZZ100 836 Pm Pst Wed Dec 11 2019
Synopsis for the northern and central washington coastal and inland waters..A vigorous frontal system will move through the area tonight. A trough will cross the area on Thursday. Onshore flow Thursday night will ease Friday. A weather disturbance will move ashore south of the area over the weekend.
Synopsis for the northern and central washington coastal and inland waters..A vigorous frontal system will move through the area tonight. A trough will cross the area on Thursday. Onshore flow Thursday night will ease Friday. A weather disturbance will move ashore south of the area over the weekend.
7 Day Forecast for Marine Location Near Sekiu, WA
Hourly EDIT Helplocation: 48.34, -124.25 debug
Area Discussion for - Seattle, WA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS66 KSEW 120435 AFDSEW
Area Forecast Discussion National Weather Service Seattle WA 835 PM PST Wed Dec 11 2019
UPDATE. Not too many changes were needed to the forecast this evening. Only tweaked POPs based on recent radar trends.
A frontal system will continue to make forward progress across the area overnight tonight. Steady rainfall continues eastwards across the area along and ahead of the cold front. This swath of precip will be supported by the left exit region of a strong jet streak aloft and will continue to provide for moderate rainfall in the lowlands and some moderate to heavy snowfall across the mountains. Current headlines appear to be in good shape for this event so have left everything currently in place as is.
In the wake of the cold front, precipitation will become more scattered/spotty. This being said, a slight chance of thunderstorms still appears possible across the coastal waters and slightly inland across the Washington Coast early Thursday morning and thru much of the day. Convection should be low topped and capable of mainly producing a few lightning strikes. This forecast matches up with well with SPC's Day 2 outlook.
The previous discussion has been included below as well as an update to the marine and aviation sections.
Kovacik
PREV DISCUSSION. /issued 237 PM PST Wed Dec 11 2019/
SYNOPSIS. An active weather pattern across the Pacific NW the next several days will continue. A trough of low pressure will bring rain and mountain snow the next several days with significant snow accumulation in the highest elevations. There will be drier and cool weather by Saturday and Sunday, and early next week, before a more active pattern develops again in the middle of next week.
SHORT TERM /TONIGHT THROUGH SATURDAY/. Radar shows showers continuing to overspread the forecast area this afternoon and this trend is set to continue. Snow levels have started out lower than earlier expectations, with snow falling in Snoqualmie Pass already. This is due to the local effects of easterly flow bringing lower snow levels in the pass. This has been the biggest change to the snow forecast, with heavier accumulations there. As a result, the winter storm warning was amended to reflect impacts down to 3000 ft of elevation. Snow levels will remain in the 3000-3500 foot range for most of the overnight, and will increase on Thursday morning as westerly flow pushes in. Thursday will bring showery conditions, with a chance of heavy mountain snow showers by Thursday evening.
Winds will increase out of the south tonight and into early Thursday. They will not be overly significant or impactful, but gusts up to 35 MPH are possible, especially near the water.
The concern on Thursday will be an increase in intensity of the showers by later afternoon. 6 hourly model QPF in the .25-.50 inch range suggests heavy showers in the mountains that will be capable of local dynamic cooling to cause snow levels to fall and produce brief periods of heavy snow. This will bring additional travel concerns, especially for Snoqualmie Pass where the snow levels are likely to rise Thursday morning, but fall again in the heavier snow showers Thursday afternoon.
Additionally, SPC guidance indicates chances of coastal thunderstorms the next few days, and this seemed reasonable, and so an isolated mention is present in the coastal areas.
Friday will bring a decrease in precip and a weak ridge will attempt to build in aloft. So temperatures will dip to near or below normal this weekend with somewhat drier weather although showers will be present in some form across the area through the weekend, just not overly widespread.
LONG TERM /SUNDAY THROUGH WEDNESDAY/. Ridging will actually start off the extended period and it looks to hold across the area into the start of next week. The breakdown of this ridging is in question and so the details remain in lower confidence levels at this time. The overall trend will be however for temperatures near normal. After this system today through Friday, there do not appear to be any significant weather impacts on the horizon.
AVIATION. Widespread rainfall (moderate to locally heavy at times) will continue to push west to east over the next several hours ahead of a cold front. The more moderate areas of rainfall may reduce vsbys for brief periods of time but overall should largely remain in the VFR range. Ceilings are a mixed bag, mainly VFR and MVFR with a few reports of IFR. Think ceilings will drop to mostly MVFR in the wake of the cold front. Rain should also become more spotty/scattered behind the front. Another front will bring the next round of widespread rain later in the day Thursday. Winds will be mostly southerly between 10-15kts with periodic gusts to 20-25kts thru Thursday.
KSEA . Widespread rain through midnight, becoming more scattered into Thursday morning. Some brief vsby reductions possible in the widespread rain. Ceilings are expected to drop from VFR tonight to MVFR overnight, with perhaps recovery back to VFR by Thursday afternoon. Winds south 10-15kts with gusts 18-22kts at times.
Kovacik
MARINE . No significant changes were made to the marine package this evening. Winds have struggled to reach gale criteria near the coast and across the northern interior waters. They are close enough to warrant leaving current headlines in place until 9PM. Thereafter a small craft advisory will remain in effect through Thursday afternoon. Previous discussion follows:
A strong frontal system will move through the area this evening. A trough will move ashore on Thursday. Gale warnings are up for the coastal waters, east entrance to the Strait of Juan de Fuca, and the northern waters. For the coastal waters, swell Thursday and Friday should be 15-18 feet with the main period around 16 seconds.
Kovacik
HYDROLOGY. A wet storm system will impact the region this afternoon through Friday. Given precipitation amounts and snow levels in the 3500-5000 foot range - most rivers are not expected to approach flood stage. There is some concern that the Skokomish River in Mason County could approach flood stage. We will continue to monitor this situation.
SEW WATCHES/WARNINGS/ADVISORIES. WA . Winter Storm Warning until 10 AM PST Friday for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties-Cascades of Whatcom and Skagit Counties.
High Surf Advisory from 8 AM to 6 PM PST Thursday for Central Coast-North Coast.
Winter Weather Advisory until 9 PM PST Thursday for Olympics.
PZ . Small Craft Advisory until 2 AM PST Saturday for Grays Harbor Bar.
Gale Warning until 9 PM PST 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.
Gale Warning until 1 AM PST Thursday for East Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland Waters Including The San Juan Islands.
Small Craft Advisory until 4 PM PST Thursday for West Entrance U.S. Waters Strait Of Juan De Fuca.
Small Craft Advisory until midnight PST tonight for Central U.S. Waters Strait Of Juan De Fuca.
Small Craft Advisory until 4 AM PST Thursday for Admiralty Inlet.
Small Craft Advisory until 5 PM PST Thursday for Puget Sound and Hood Canal.
www.weather.gov/seattle
Weather Reporting Stations
EDIT (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 |
| NEAW1 - 9443090 - Neah Bay, WA | 19 mi | 55 min | 47°F | 1006.9 hPa | ||||
| 46087 - Neah Bay, WA (Traffic Separation Lighted Buoy) | 27 mi | 47 min | SW 16 G 18 | 51°F | 48°F | 12 ft | 1005.8 hPa (+2.7) | 47°F |
| LAPW1 - 9442396 - La Push, WA | 36 mi | 61 min | 47°F | 1008.1 hPa | ||||
| PTAW1 - 9444090 - Port Angeles, WA | 45 mi | 61 min | SE 1.9 G 4.1 | 45°F | 47°F | 1007.1 hPa | ||
| DESW1 - Destruction Island, WA | 48 mi | 37 min | SSW 14 G 14 | 51°F | 1009.3 hPa (+3.4) |
Wind History for Neah Bay, WA
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Quillayute, Quillayute State Airport, WA | 31 mi | 44 min | S 5 | 10.00 mi | Overcast | 47°F | 45°F | 93% | 1008.5 hPa |
Link to 5 minute data for KUIL
Wind History from UIL (wind in knots)
| 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | |
| Last 24hr | E | E | E | E | E | E | E | E | E | E | E | S | S G18 | S G24 | SE G24 | SE G19 | SE G19 | SE G18 | SE G16 | S | SW G25 | S | SW | S |
| 1 day ago | E | E | E | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | Calm | Calm | Calm | Calm | Calm | Calm | SE | Calm | E | E | |
| 2 days ago | E | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | Calm | Calm | Calm | Calm | Calm | Calm | E | E | E | E | E | Calm | Calm |
Tide / Current Tables for Sekiu, Washington
EDIT Weekend mode (on/off) (on/off) Help One Week of DataSekiu
Click for Map
Thu -- 01:59 AM PST 4.02 meters High Tide
Thu -- 06:11 AM PST 3.50 meters Low Tide
Thu -- 07:58 AM PST Sunrise
Thu -- 08:24 AM PST Moonset
Thu -- 12:00 PM PST 4.78 meters High Tide
Thu -- 04:22 PM PST Sunset
Thu -- 05:04 PM PST Moonrise
Thu -- 07:54 PM PST 1.70 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 01:59 AM PST 4.02 meters High Tide
Thu -- 06:11 AM PST 3.50 meters Low Tide
Thu -- 07:58 AM PST Sunrise
Thu -- 08:24 AM PST Moonset
Thu -- 12:00 PM PST 4.78 meters High Tide
Thu -- 04:22 PM PST Sunset
Thu -- 05:04 PM PST Moonrise
Thu -- 07:54 PM PST 1.70 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 3.7 | 3.9 | 4 | 3.9 | 3.7 | 3.6 | 3.5 | 3.5 | 3.7 | 4 | 4.4 | 4.7 | 4.8 | 4.7 | 4.4 | 3.9 | 3.3 | 2.7 | 2.2 | 1.8 | 1.7 | 1.9 | 2.3 | 2.9 |
Tide / Current Tables for Strait of Juan de Fuca Entrance, Washington Current
EDIT (on/off) Help One Week of DataStrait of Juan de Fuca Entrance
Click for Map
Thu -- 02:03 AM PST 1.16 knots Max Flood
Thu -- 05:06 AM PST -0.00 knots Slack
Thu -- 08:00 AM PST Sunrise
Thu -- 08:24 AM PST -1.22 knots Max Ebb
Thu -- 08:26 AM PST Moonset
Thu -- 12:49 PM PST 0.00 knots Slack
Thu -- 01:34 PM PST 0.07 knots Max Flood
Thu -- 02:18 PM PST -0.00 knots Slack
Thu -- 04:23 PM PST Sunset
Thu -- 05:04 PM PST Moonrise
Thu -- 07:42 PM PST -2.09 knots Max Ebb
Thu -- 11:46 PM PST 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 02:03 AM PST 1.16 knots Max Flood
Thu -- 05:06 AM PST -0.00 knots Slack
Thu -- 08:00 AM PST Sunrise
Thu -- 08:24 AM PST -1.22 knots Max Ebb
Thu -- 08:26 AM PST Moonset
Thu -- 12:49 PM PST 0.00 knots Slack
Thu -- 01:34 PM PST 0.07 knots Max Flood
Thu -- 02:18 PM PST -0.00 knots Slack
Thu -- 04:23 PM PST Sunset
Thu -- 05:04 PM PST Moonrise
Thu -- 07:42 PM PST -2.09 knots Max Ebb
Thu -- 11:46 PM PST 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 0.5 | 1 | 1.2 | 1 | 0.6 | 0.1 | -0.5 | -1 | -1.2 | -1.2 | -0.9 | -0.6 | -0.2 | 0 | 0 | -0.2 | -0.6 | -1.2 | -1.7 | -2 | -2.1 | -1.8 | -1.3 | -0.6 |
Weather Map
(on/off) Help Weather Map
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 Seattle, WA (4,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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