Saturday Regional Weather Summary
Drier conditions through Saturday as zonal flow aloft prevails. A subtle trough will enter on Sunday increasing precipitation chances. An upper-ridge looks to take hold to start the new week however, a series of weak troughs will influence the pattern but most precipitation should stay north of the area. .SHORT TERM /TONIGHT THROUGH MONDAY/...Mostly zonal flow aloft over the PNW along with broad ridging over the Rockies and saggy troughing off the coast of California. Conditions are drier across the forecast area as surface high pressure builds within this post-frontal environment. For tonight, we`ll remain dry with minimum temperatures falling into the 40s and 50s. Can`t rule out patchy fog developing due to residual surface moisture particularly along the river valleys. More dry weather expected into Saturday as the flow aloft backs towards the southwest. Offshore, an upper-trough positioned over the NE Pacific will track closer to cause the perturbation in the flow aloft. Conditions are to remain dry before rain chances return on Sunday. The aforementioned trough will swing into the region with the best chance of showers north of I-90 during the day before drying out at night. Then, upper-ridging will return to start the week on Monday as subsidence brings clear skies and abundant sunshine. Highs are to remain in the 60s with overnight lows largely in the 40s. .LONG TERM /TUESDAY THROUGH FRIDAY/...Ridging will persist into Tuesday but an upper-low out of the Gulf of Alaska will help to flatten it by midweek. Here we`ll see the return of more rain chances. There are questions on how the pattern will exactly evolve around this time but rain amounts don`t appear to be impressive. Guidance has a cold front sweeping across the region on Friday but uncertainty still exists in the track of its parent low. Temps in the extended may cool slightly with most locations seeing highs in the upper 50s to mid 60s. McMillian .AVIATION...Mostly clear skies into the early morning hours Saturday. Northerly gradients easing overnight with low stratus forming near the Puget Sound along with areas of fog in the usual fog prone places like the Southwest Interior and some interior river valleys. The layer will be shallow with the stratus dissipating by 18z. VFR conditions in the afternoon. KSEA...Clear skies overnight. Low stratus forming around 12z. Stratus could be low enough to cause visibility restrictions 13z-16z. Stratus dissipating around 18z with VFR conditions in the afternoon. North northeast wind 10 to 15 knots easing to 6 to 8 knots around 09z. North northeasterly winds continuing through Saturday afternoon with a switch to southwesterlies 6 to 10 knots 01z-04z. Felton .MARINE...A surface ridge will quickly build into the coastal and offshore waters today in the wake of a deep surface low that swept onshore near Haida Gwaii overnight. Surface ridging will build into the interior of southern British Columbia by tonight turning the flow northerly across area waters. A forecast surge of northerly winds has resulted in the issuance of a SCA for the East Entrance of the Strait of Juan de Fuca and Admiralty Inlet overnight into Saturday morning. Small craft advisories will also remain in place across the coastal waters and the west entrance to the strait as hazardous double digit seas will continue before they subside below 10 feet by Saturday night. A system passing mainly to the north of the area Saturday night and Sunday will enhance onshore flow with likely small craft advisory westerlies in the strait. Otherwise, conditions will remain fairly tranquil across area waters into early next week as high pressure remains in control. 27/15
Drier conditions through Saturday as zonal flow aloft prevails. A subtle trough will enter on Sunday increasing precipitation chances. An upper-ridge looks to take hold to start the new week however, a series of weak troughs will influence the pattern but most precipitation should stay north of the area. .SHORT TERM /TONIGHT THROUGH MONDAY/...Mostly zonal flow aloft over the PNW along with broad ridging over the Rockies and saggy troughing off the coast of California. Conditions are drier across the forecast area as surface high pressure builds within this post-frontal environment. For tonight, we`ll remain dry with minimum temperatures falling into the 40s and 50s. Can`t rule out patchy fog developing due to residual surface moisture particularly along the river valleys. More dry weather expected into Saturday as the flow aloft backs towards the southwest. Offshore, an upper-trough positioned over the NE Pacific will track closer to cause the perturbation in the flow aloft. Conditions are to remain dry before rain chances return on Sunday. The aforementioned trough will swing into the region with the best chance of showers north of I-90 during the day before drying out at night. Then, upper-ridging will return to start the week on Monday as subsidence brings clear skies and abundant sunshine. Highs are to remain in the 60s with overnight lows largely in the 40s. .LONG TERM /TUESDAY THROUGH FRIDAY/...Ridging will persist into Tuesday but an upper-low out of the Gulf of Alaska will help to flatten it by midweek. Here we`ll see the return of more rain chances. There are questions on how the pattern will exactly evolve around this time but rain amounts don`t appear to be impressive. Guidance has a cold front sweeping across the region on Friday but uncertainty still exists in the track of its parent low. Temps in the extended may cool slightly with most locations seeing highs in the upper 50s to mid 60s. McMillian .AVIATION...Mostly clear skies into the early morning hours Saturday. Northerly gradients easing overnight with low stratus forming near the Puget Sound along with areas of fog in the usual fog prone places like the Southwest Interior and some interior river valleys. The layer will be shallow with the stratus dissipating by 18z. VFR conditions in the afternoon. KSEA...Clear skies overnight. Low stratus forming around 12z. Stratus could be low enough to cause visibility restrictions 13z-16z. Stratus dissipating around 18z with VFR conditions in the afternoon. North northeast wind 10 to 15 knots easing to 6 to 8 knots around 09z. North northeasterly winds continuing through Saturday afternoon with a switch to southwesterlies 6 to 10 knots 01z-04z. Felton .MARINE...A surface ridge will quickly build into the coastal and offshore waters today in the wake of a deep surface low that swept onshore near Haida Gwaii overnight. Surface ridging will build into the interior of southern British Columbia by tonight turning the flow northerly across area waters. A forecast surge of northerly winds has resulted in the issuance of a SCA for the East Entrance of the Strait of Juan de Fuca and Admiralty Inlet overnight into Saturday morning. Small craft advisories will also remain in place across the coastal waters and the west entrance to the strait as hazardous double digit seas will continue before they subside below 10 feet by Saturday night. A system passing mainly to the north of the area Saturday night and Sunday will enhance onshore flow with likely small craft advisory westerlies in the strait. Otherwise, conditions will remain fairly tranquil across area waters into early next week as high pressure remains in control. 27/15
Current Conditions in Seattle Mariners, WA
55°
Clear sky
