MARINE SYNOPSIS: Weak troughing over the interior of WA combined with high pressure offshore will make for weak onshore flow today. Despite this, enough of a gradient will likely persist over the Outer Coastal Waters to warrant the extension of a low-end small craft advisory through tonight. Despite some marine stratus offshore and near the Coast this morning, expect clear skies and tranquil conditions over the waters today. This evening, a westerly push down the Strait will yield small craft advisory level winds. The push may be strong enough for these winds to spread into Admiralty Inlet and the Northern Inland Waters, but confidence is currently not high enough to include these waters in the advisory. A stronger onshore push is then expected overnight, which is likely to blanket most waters under a low level cloud deck through Tuesday morning. Decent onshore flow will continue through Thursday before gradually weakening into the weekend. Strong high pressure in the upper levels will make for warm and dry conditions. Diurnal westerly pushes down the Strait are still likely most evenings. Kovacik (Issued: 355 AM PDT Mon Jun 21 2021 NOAA)