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.
East Los Angeles , the Gateway Cities , and parts of the San Gabriel Valley average the warmest winter high temps ( 72 Â°F , 22 Â°C ) in all of the western U.S. , and Santa Monica averages the warmest winter lows ( 52 Â°F , 11 Â°C ) in all of the western U.S. Palm Springs , a city in the Coachella Valley , averages high / low / mean temperatures of 75 ...