nws

This is the Forecast Discussion from KSEA / Seattle WA NWS at Thursday 12/12/2024 06:01:41 PST

SHORT TERM, TODAY THROUGH SATURDAY: Current satellite shows a low pressure system spinning off the Oregon Coast bringing some high clouds into the region. This may help mitigate the fog in some areas and improve the visibility.

Radar imagery also shows light showers starting to move into the region from the south. The low pressure system is expected to move southward towards Northern California, thus keeping the majority of the moisture centered to that area.

As a result, rainfall amounts are expected to be light with this system on Thursday. Snow levels at the passes with this system are expected to be between 2500 to 3500 ft. Some light snow accumulation is possible, around 1 to 2 inches.

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This is the Forecast Discussion from KSEA / Seattle WA NWS at Saturday 12/14/2024 06:26:05 PST

SHORT TERM: Good morning, western WA.

Active weather will persist throughout the day as a stout disturbance churns offshore. An upper-trough is lifting northeastward along with its associated 977 mb surface low about 125nm WSW of La Push. It'll continue before filling over Vancouver Island and SW BC this afternoon. With it, widespread rain, mountain snow, gusty winds and high surf/Coastal Flooding will be an issue.

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This is the Forecast Discussion from KSEA / Seattle WA NWS at Saturday 12/28/2024 04:47:39 PST

SHORT TERM, today through Monday:

Overall, an active weather pattern remains on tap throughout the short term.

Radar shows showers continuing to make their way across western Washington early this morning as a frontal system progresses through the region.

It's associated surface low remains situated just offshore Vancouver Island and will push inland and weaken today.

Snow continues for the Cascades, where a Winter Weather Advisory remains in effect through the afternoon and where additional snow accumulations of 3 to 9 inches will be possible for the passes.

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This is the Forecast Discussion from KSEA / Seattle WA NWS at Friday 01/10/2025 06:23:31 PST

SHORT TERM, today Friday into the weekend:

A frontal system will continue to move inland this morning and sweep across the Pacific Northwest throughout the day today, bringing in lowland rain and mountain snow alongside breezy post-frontal onshore winds.

Snow levels will fall to 3000 ft by late Friday, resulting in snow accumulation through Snoqualmie and Stevens Passes.

Confidence is high that Puget Sound Convergence Zone showers will form over the central Cascades later today into early Saturday morning which will locally enhance snowfall amounts.

Latest model guidance shows roughly 7 inches of snow through Snoqualmie Pass and 11 inches through Stevens Pass enhanced by convergence zone shower activity, and a Winter Weather Advisory remains in effect through early Saturday morning.

Lower elevations will see drying throughout the day Saturday, with lingering snow showers over the Cascades under moist northwest flow aloft. Snow levels will dip to roughly 2000 ft, though any additional snow accumulation amounts on Saturday will be light.

The rest of the region will see cloudy skies with some afternoon sun breaks and highs in the mid to upper 40s.

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This is the Forecast Discussion from KSEA / Seattle WA NWS at Wednesday 01/22/2025 06:36:12 PST

SHORT TERM, today Wednesday into Friday:

Satellite imagery shows high clouds streaming over the area. Stratus spilling out of the Strait of Georgia covering the San Juans and northern slopes of the Olympics. The stratus is as far south as Port Ludlow at 3 am/11z.

Areas of freezing fog formed after midnight in the Southwest Interior and South Puget Sound. Temperatures were in the mid 20s to mid 30s.

Upper level ridge remaining in place over the area today with some high clouds moving through the ridge. Stratus and freezing fog not very deep and will dissipate by midday. Highs in the lower to mid 40s.

Ridge beginning to weaken tonight and retrograde westward as a shortwave moves over the top of the ridge into Haida Gwaii around 12z Thursday. Lows once again will be in the mid 20s to mid 30s.

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This is the Forecast Discussion from KSEA / Seattle WA NWS at Wednesday 02/05/2025 04:55:11 PST

SYNOPSIS:

An upper level low spinning across the Pacific Northwest will continue to bring chances of snow showers to western Washington through Thursday before pushing inland on Friday.

A weak system moving across the area over the weekend will keep conditions showery across western Washington.

Cold, below normal temperatures will persist across the area into early next week.

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