San Diego Weather Radar - Live Doppler Map (CA)

🌦️ San Diego Weather & Live Doppler Radar Guide

San Diego enjoys one of the most temperate, pleasant climates in the United States, characterized by a semi-arid Mediterranean regime with mild winters and warm, arid summers. However, coastal Southern California weather is shaped by distinct atmospheric dynamics, including the marine layer stratus clouds ('May Gray' and 'June Gloom'), winter atmospheric river storm systems originating in the Pacific, and dry, offshore Santa Ana wind events that heighten wildfire danger. Real-time Doppler radar is essential for monitoring winter frontal rain bands and coastal showers across San Diego County.

📡 NOAA NEXRAD Station: KNKX (Miramar / San Diego, CA)

Our interactive San Diego radar displays data from NOAA's Level-III NEXRAD radar station KNKX, located at Marine Corps Air Station Miramar in central San Diego County. Station KNKX operates with S-band dual-polarization technology, providing high-resolution radar scans that detect light coastal drizzle, winter storm precipitation, and mountain snowpack over the Cuyamaca and Laguna Mountains.

🎨 How to Read Doppler Reflectivity (dBZ Scale)

Radar reflectivity measures precipitation density in decibels of Z (dBZ). Use this color reference when monitoring approaching storms on the San Diego radar:

⚠️ Seasonal Severe Storm Threats in San Diego

During winter (December through March), powerful Pacific atmospheric rivers can deliver intense multi-day rainfall, triggering flash flooding in urban canyons and mudslides on steep coastal hillsides. Autumn brings hot, bone-dry Santa Ana winds gusting down mountain passes, creating extreme fire weather conditions.