Tropical Cyclone Fina formed over the Timor Sea on November 19, 2025, becoming the first named storm of the 2025–26 Australian region cyclone season. This marks the earliest start to the Australian cyclone season in 12 years.
Santa Barbara recorded 169.5 mm (6.67 inches) of rain over a three-day period ending November 17 2025, setting a new rainfall record for the county. The series of atmospheric rivers that brought the record rainfall caused at least 7 fatalities in California due to heavy rain, flooding, and rough seas.
At least 6 fatalities have been reported as of Sunday, November 16, 2025, as a powerful atmospheric river continues to impact California. With heavy rainfall of up to 200 mm (8 inches) being forecast, authorities are preparing for the threat of flash floods, landslides, debris flows across the state.
A combination of the ongoing weak La Niña, the Madden–Julian Oscillation (MJO), and a rare November Sudden Stratospheric Warming (SSW), could bring colder winter-conditions across parts of the U.S. during late November and early December
A major long-duration solar flare measuring X4.0 erupted from Active Region 4274 at 08:30 UTC on November 14, 2025, producing a fast CME. The event started at 07:44 and ended at 08:40 UTC.
A strong atmospheric river is forecast to move onshore across California through Saturday, November 15, 2025, bringing heavy rain, strong southwest winds, and elevated flash-flood risk across northern, central, and southern parts of the state.
Coronal mass ejections produced by a long-duration X1.7 on November 9 and X1.2 on November 10 appear to have merged on their way to Earth and impacted our planet at 23:00 UTC on November 11, sparking G4 – Severe geomagnetic storming. Another CME, produced by a major X5.1 flare on November 11, is expected to impact Earth by the end of November 12, causing another round of severe geomagnetic storming. Aurora watchers have already reported impressive sightings as far south as Zacatecas, Mexico.
A major X5.1 solar flare erupted from Active Region 4274 at 10:04 UTC on November 11, 2025, producing a large Earth-directed coronal mass ejection (CME). NOAA SWPC issued a geomagnetic storm watch predicting G4 – Severe or greater conditions for November 12, G3 – Strong for November 13, and G1 – Minor for November 14. On November 12 and 13, aurora may be visible as far south as Alabama and northern California.
A major solar flare registered as X5.1 erupted from Active Region 4274 at 10:04 UTC on November 11, 2025. The event started at 09:49 UTC and ended at 10:17 UTC.
A strong atmospheric river is forecast to make landfall along the U.S. West Coast on Wednesday, November 12, 2025, bringing heavy rain and mountain snow across much of California through Friday, November 14.
