California is expected to experience unusual September weather patterns, including a potential tropical moisture stream and widespread thunderstorms, continuing into next week. On Sunday, a weak stream of tropical moisture could bring showers to far Southern California, particularly near San Diego. A more significant thunderstorm outbreak is forecast for Tuesday, according to a social media post from @Weather_West at 4:30 PM UTC on September 20th. This forecast follows observations of Typhoon Neoguri intensifying over the Pacific Ocean earlier on September 20th. The VIIRS satellite pass at 1516Z recorded the storm's eye temperature at 21.104126 degrees Celsius, as shared via X by user @Carl225126302. While the current report focuses on California's weather, the intensification of Typhoon Neoguri was noted in a previous reporting window.
