The 2026 Northwest Pacific typhoon season has been relentless. Since Super Typhoon Sinlaku tore through Micronesia, Guam, and the Northern Mariana Islands in April, the basin has produced twenty-five named storms through late October — a pace that meteorologists describe as "particularly active." The strong El Niño underway in the Pacific is the likely engine, warming equatorial waters and bending storm tracks northward toward island chains and higher latitudes that don't always plan for this kind of punishment. Two storms captured in NASA satellite imagery on October 29-30 tell the season's story in miniature. Super Typhoon In-fa, the fifth typhoon to hit the Mariana Islands this year, presented as a rare annular storm — the "truck tire" configuration that accounts for just 4 percent of western North Pacific tropical cyclones. Annular storms carry eyes averaging 45 kilometers in diameter (versus 25 for standard cyclones) and maintain intensity longer in unfavorable conditions. In-fa was unusually intense, nearly circular, and lacking the outer spiral rainbands that define typical typhoons. Meanwhile, the remnants of Typhoon Champi — which had peaked with sustained winds near 300 kilometers per hour, making it one of the season's strongest storms — were completing extratropical transition as they entered the Bering Sea. Tropical cyclones are warm-core systems fed by ocean heat; extratropical cyclones are cold-core systems that draw energy from temperature contrasts between air masses. Champi's remnants merged with and intensified a midlatitude system already present over the Bering Sea, expanding its wind field across a much larger area even as peak wind speeds didn't necessarily increase. Champi's destructive path before reaching Alaska was extensive. The typhoon narrowly skirted Taiwan and Guam but still delivered damaging winds and intense rainfall to both, as well as to parts of China and Japan. When the remnants reached Alaska, the state avoided catastrophic damage on the scale of ex-typhoon Halong's October 2025 strike, but some areas experienced high winds, heavy rain, and significant snowfall. The Alaska connection is the structural story. Champi is the fourth ex-typhoon to enter Alaskan waters in 2026, following Bang-Lang in August, Dujuan in September, and Choi-wan in early October. University of Alaska Fairbanks meteorologist Rick Thoman noted that the autumns of 1997 and 2015 — both very strong El Niño years — each saw three ex-typhoons reach Alaska. Roughly 60 ex-typhoons have impacted the state since 1970. Four in a single season pushes into uncharted territory for the modern record. El Niño is doing two things simultaneously. It fuels storm formation by warming equatorial Pacific waters, and it reshapes where those storms go. In the Northwest Pacific, El Niño tends to curve storms northward rather than letting them track westward toward East Asia and Southeast Asia, pushing more activity toward Guam, the Northern Mariana Islands, Japan, the Korean Peninsula, and ultimately Alaska. The result is a geographic redistribution of destructive energy — island communities that already face repeated strikes absorb more, while higher-latitude systems designed for different weather regimes get tested by tropical-origin storms. The season's broader pattern — five typhoons hitting the Marianas, a super typhoon with annular characteristics, ex-typhoons routinely reaching Alaska — isn't anomalous in isolation. But the combination, the pace, and the El Niño amplification represent a system operating at elevated stress. Infrastructure, emergency response, and disaster recovery across the Pacific are absorbing repeated hits with diminishing intervals between them.
