Tropical Storm Watch Issued for San Diego County Mountains

A Tropical Storm Watch has been issued for the San Diego County Mountains, including Julian and Pine Valley, effective immediately and expiring at 2:15 PM UTC on October 10, 2026. This alert, issued by the National Weather Service (NWS) San Diego CA, indicates a severe and future threat from hazardous winds and major flooding rain.

Residents in affected areas should plan for hazardous winds reaching 25-35 mph with gusts up to 55 mph. Prepare for limited wind damage, including potential harm to lightweight structures and numerous broken tree limbs. All efforts to protect property should be completed as soon as possible, and residents should move to safe shelter before winds become hazardous.

A Flood Watch is also in effect, with peak rainfall amounts of 1-3 inches expected, and locally higher amounts possible. The NWS warns of the potential for major flooding rain, which could lead to evacuations and rescues. Emergency plans should account for this possibility. Strongly consider protective actions, especially if you are in a flood-vulnerable area, and heed all flood watches and warnings. Failure to take action could result in serious injury or loss of life. Rivers and small waterways may overflow, and destructive runoff could cause rockslides and mudslides in mountain areas. Extensive damage to structures and widespread road closures are possible.

Tornadoes are not expected. For more information and local updates, visit sdcountyemergency.com.