Puget Sound Convergence Zone Puget Sound Convergence Zone The Puget Sound Convergence Zone (PSCZ) is a meteorological phenomenon that occurs over Puget Sound in the U.S. state of Washington. It is formed when the large-scale air flow splits around the Olympic Mountains and then converges over Puget Sound. This convergence zone generally occurs between north Seattle and Everett and can cause updrafts and convection, which leads to a narrow band of precipitation. A second, weaker convergence zone can occur between approximately Victoria, British Columbia, and Bellingham, Washington, over the San Juan Islands, as a result of southwesterly air blowing from the Strait of Juan
Puget Sound AVA Allyn-Grapeview. Evan planted several varieties of "Vitis labrusca" there. The Puget Sound AVA contains many wineries, most of which get their grapes from Eastern Washington. There are about 12 wineries that either grow their own grapes or buy grapes from growers in the Puget Sound AVA. Puget Sound AVA The Puget Sound AVA is an American Viticultural Area in western Washington state. It is the only AVA in the state of Washington that is located west of the Cascade Mountains. The AVA encompasses the entire Puget Sound area from the Canada–US border to just south of Olympia. Rainfall in the