precipitation

Natural cues are key, with autumn’s initial precipitation generally triggering the march.

Parts of the Los Angeles region could see light rain this week as a small chance of thunderstorms brings the possibility of more precipitation following last week’s soaking, according to the National Weather Service.

The season’s first major storm brought much-needed precipitation to California and transformed the state’s mountain peaks with snow and reservoirs with rain.

"In order to understand that, we really, really need to have a longer time period of records of both temperature and precipitation at the glacier sites," said Miles.

But there is a chance that much of the Southland sees some precipitation, though the most concerning rainfall is expected further east into Arizona, Utah and Colorado.