As the tropical Pacific remains active through the holiday weekend, some impacts will be felt in Southern California in the form of downpours and heavy surf.
Tropical downpours could disrupt travel and outdoor activities and cause dangerous flash flooding from near the Southern California coast to the Nevada deserts during part of the extended Labor Day weekend.
The tropical moisture streaming into the southwestern United States will be sandwiched between a non-tropical storm to the north and the tail end of dry, hot air from a heat dome anchored over the Great Plains.
The storm over the Northwest will have the most influence on the weather in Southern California and the Southwest through this weekend. The storm is generally too far away to bring widespread shower activity on its own, while the heat dome over the Plains is too far away to guarantee dry and warm conditions through the weekend…