East Entrance U.S. waters Strait of Juan de Fuca Marine Forecast
| Tonight...W Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Mon...Nw Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Mon Night...W Wind 5 To 10 Kt, Becoming Sw 10 To 15 Kt After Midnight. Waves Around 2 Ft Or Less. |
| Tue...S Wind 10 To 15 Kt. Waves Around 2 Ft Or Less. A Chance Of Rain In The Morning, Then Rain In The Afternoon. |
| Tue Night...S Wind 5 To 10 Kt, Veering To W After Midnight. Waves Around 2 Ft Or Less. Rain In The Evening, Then A Chance Of Showers After Midnight. |
| Wed...Nw Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. A Chance Of Showers. |
| Wed Night...W Wind Around 5 Kt. Waves Around 2 Ft Or Less. |
| Thu...W Wind Around 5 Kt, Veering To N In The Afternoon. Waves Around 2 Ft Or Less. |
| Thu Night...W Wind Around 5 Kt, Rising To 5 To 10 Kt After Midnight. Waves Around 2 Ft Or Less. |
| Fri...S Wind Around 5 Kt. Waves Around 2 Ft Or Less. |
| Fri Night...W Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. A Chance Of Showers. |
| Area Forecast Discussion National Weather Service Seattle WA 201pm PDT Sunday September 15 2024 Synopsis Upper level trough moving southward tonight with gradually clearing skies tonight. Monday will be dry as well with the trough well to the south and an approaching front still north of Vancouver Island. Front moving through Tuesday night with rain out ahead of the front spreading over the area Tuesday. Upper level ridge trying to build in later Wednesday into Thursday but the ridge is not strong enough to eliminate the possibility of systems brushing the area into next weekend. .Short Term - Tonight through Wednesday Satellite imagery shows stratus beginning to break up across the western Washington interior, while mostly clear skies prevail along the Pacific Coast and the Strait of Juan de Fuca. In the upper levels, a trough will push southward into California. A brief period of southerly winds aloft may promote some limited elevated instability over the Cascades, which will allow for convective showers to develop this afternoon into this evening. There is a low (10%) chance for a few isolated lightning strikes, but should be much fewer in coverage than what occurred yesterday. Elsewhere, clouds should continue to break up and scatter this afternoon, trending toward mostly clear skies tonight and the trough departs. Lows tonight will be in the mid 40s to low 50s. Some patchy fog may develop Monday morning with mostly clear skies, but should evaporate in the morning. Split flow aloft with a weak ridge trying to nudge into the region will keep Monday dry. Partly cloudy skies will allow temperatures to warm into the upper 60s to low 70s. This is still a bit below normal, but it will be the warmest day of the week. High clouds will filter in Monday night as the next upper level trough and associated frontal system approaches the region on Tuesday. Tuesday will be much cooler with highs in the 60s with widespread rain through much of the day. Rainfall amounts should remain light, a few tenths of an inch possible across the interior, with 0.5 to near 1 inch possible along the Pacific Coast and the windward Olympic mountains. Rain will devolve into showers Tuesday night into Wednesday before tapering off Wednesday evening. Long Term - Thursday Through Sunday The evolution of the long- term forecast remains uncertain as models struggle to converge on a solution. The trough will dip south in to California on Wednesday with a ridge centered over the east-central Pacific trying to build over the area. The ridge moves south, resulting in more zonal flow by the end of the week. For this weekend, ensemble cluster analysis shows about a 60% lean towards ridging for the weekend, with warmer and drier conditions, with 40% of model runs indicating additional troughs moving through for cooler and wetter conditions. The mean solution shows temperatures slowly climbing into the mid to upper 60s and a broad-brushed chance for showers from Friday into the weekend across western Washington. LH Marine Generally benign conditions today as high pressure builds over the coastal waters. North to northwest winds across the waters today with gusts just below SCA (Small Craft Advisory) over the far outer coastal waters and through the Strait of Georgia across the San Juan Islands northwestward. Building high pressure will generate a westerly push through the Strait of Juan de Fuca on Monday, though confidence is not high enough that it will reach SCA (Small Craft Advisory) criteria. Low pressure will move southward across area waters on Tuesday with high pressure rebounding through the remainder of the week. Seas 5 to 7 feet today through Tuesday, dropping to 4 to 5 feet Tuesday before rising again around 6 to 8 feet as a trough moves through mid-week. Seas will return to 4 to 5 feet by the end of the week as conditions calm. 15 NOAA Seattle WA Office: Watches - Warnings - Advisories WA...None. PZ...None. |
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