Marine Weather and Tide Forecast for Glacier, WA

SHORT TERM /TODAY THROUGH FRIDAY/
No significant changes made to the forecast this morning. The previous discussion can be found below along with aviation and marine updates:

A high pressure ridge will continue to build inland through Thursday, bringing in warmer temperatures alongside sunny and dry conditions. Temperatures will rise above normal today and continue warming into Thursday, with most lowland areas east and south of the Puget Sound seeing highs in the 70s on Thursday. Clouds will slowly start to increase from the west on Thursday as a trough slowly approaches the coast and the upper ridge axis shifts to the east of the region.

Forecast models remain in good agreement over a cutoff low moving inland over northern California on Friday. Trending the storm system further south, ensembles have decreased the chances for shower activity across western Washington on Friday. Temperatures will remain well above normal on Friday under southerly flow aloft, but cloudy skies will lower temperatures a few degrees from Thursday.

LONG TERM /SATURDAY THROUGH TUESDAY/
Operational forecast models are hinting at split flow developing on Saturday, which would keep most of the region cooler and dry. Chances for precipitation increase towards the end of the weekend as a trough moves over the region, but models continue to show differences over the timing and intensity of precipitation. Showers are now favored to linger into early next week before another high pressure ridge develops over the western US, bringing a return of drier and warmer conditions.

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AVIATION
An upper level ridge axis over the coastal waters will shift onshore tonight with north to northwest flow aloft becoming light southerly overnight. The low level flow remains northerly. The air mass is dry and stable. VFR is expected areawide after patchy stratus mainly near the coast dissipates.

KSEA...VFR. Surface winds becoming north/northwesterly 5 to 8 knots this afternoon then light northeasterly tonight. 27

MARINE
A surface ridge centered offshore will weaken through tomorrow. A broad area of weak surface low pressure will develop late in the week over the Pacific Northwest while high pressure remains centered well offshore. This will lead to an overall increase in onshore flow leading into the upcoming weekend. The end result will likely be a period of small craft advisory winds across the coastal waters as well as the central/east portions of the strait. 27

HYDROLOGY
No river flooding is expected over the next 7 days.

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...None.