Where the plates meet, their relative motion determines the type of boundary: convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries.The lateral relative movement of the plates typically ranges from zero to 100 mm annually. Divergent boundaries (Constructive) occur where two plates slide apart from each other. 2  At zones of ocean-to-ocean rifting, divergent boundaries form by seafloor spreading, allowing for the formation of new ocean basin.
Ponderosa, CA 5 and 7 day long range forecast, current conditions, satellite, radar, warnings, historical archive, local news and much more. It is currently 36Â°F (2.2Â°C) and Fog. Outlook:Today.
Average Weather in South San Francisco California, United States. In South San Francisco, the summers are long, comfortable, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy. Over the course of the year, the temperature typically varies from 45Â°F to 71Â°F and is rarely below 39Â°F or above 82Â°F.