![Map illustrating the trajectories of atmospheric rivers (ARs) that made landfall along the U.S. West Coast between October 2025 and March 2026. The arrow endpoint indicates the coastal location where the highest integrated vapor transport (IVT) within each AR was observed based on ERA5 reanalysis. The color shading indicates the maximum IVT magnitude [in kg/(ms)] of each AR along the coast.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:m6wmrhwljxz43udvb5drleue/bafkreigpv4hdnnxhcg7ckugkwvma37vfd3rl267yd3bragknd3zavazti4)
Map illustrating the trajectories of atmospheric rivers (ARs) that made landfall along the U.S. West Coast between October 2025 and March 2026. The arrow endpoint indicates the coastal location where the highest integrated vapor transport (IVT) within each AR was observed based on ERA5 reanalysis. The color shading indicates the maximum IVT magnitude [in kg/(ms)] of each AR along the coast.
56 #AtmosphericRivers made landfall along the U.S. West Coast during the first 6 months of Water Year 2026. There were stark differences in AR activity between October-December (14 strong or greater ARs) and January-March (3 strong ARs).
Read the full summary here: cw3e.ucsd.edu/the-atmosphe....
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