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North Bay mountainsNorth Bay valleysNorth Bay mountainsNorth Bay coastSolano CountyEast Bay valleysSan FranciscoEast Bay hillsBay shorelinePeninsula coastEast Santa Clara HillsSan JoseSanta Cruz MountainsMonterey Bay
San Francisco Bay Area: 13 regions on their zones, each in the colour it wears in the list below.

Thirteen regions on NWS forecast zones: San Francisco, Bay shoreline, Peninsula coast, North Bay coast, North Bay valleys, North Bay mountains, East Bay hills, East Bay valleys, San Jose, East Santa Clara Hills, Santa Cruz Mountains, Monterey Bay and Solano County.

In the editor each region takes a level with one click. When one region needs more detail, split it into its zones and set them one by one; merge it back when they agree.

Regions in this starter map

  • San Francisco1 zoneSan Francisco
  • Bay shoreline1 zoneSan Francisco Bay Shoreline
  • Peninsula coast1 zoneSan Francisco Peninsula Coast
  • North Bay coast3 zonesMarin Coastal Range · Sonoma Coastal Range · Coastal North Bay Including Point Reyes National Seashore
  • North Bay valleys1 zoneNorth Bay Interior Valleys
  • North Bay mountains1 zoneNorth Bay Interior Mountains
  • East Bay hills1 zoneEast Bay Hills
  • East Bay valleys1 zoneEast Bay Interior Valleys
  • San Jose1 zoneSanta Clara Valley Including San Jose
  • East Santa Clara Hills1 zoneEastern Santa Clara Hills
  • Santa Cruz Mountains1 zoneSanta Cruz Mountains
  • Monterey Bay1 zoneNorthern Monterey Bay
  • Solano County2 zonesCentral Solano County Including Fairfield and Vacaville · Southwestern Solano County Including Vallejo

Forecast zones from the National Weather Service, coastline from Natural Earth.