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Open →NOAA
Automatically indexed from an explicit mention in article #41290. Open linked research for context.
EntitySource
Open →NOAA Space Weather Prediction Center — Coronal Holes and High-Speed Solar-Wind Streams
www.spaceweather.gov
Evidence registrySource
Open →Joint USAF/NOAA Solar and Geophysical Activity Report, September 17, 2026, processed by SpaceWeatherLive
www.spaceweatherlive.com
Evidence registryArticle
Open →Polar Vortex Watch 2026–27: The Sun Quieted, the Vortex Hit a Record — Now the Real Test Begins
The early-season Arctic vortex has now crossed from unusual into a verified date-matched record at 10 hPa. At the same time, NOAA reports very low solar activity and weakening coronal-hole high-speed-stream forcing, while NASA’s forecast shows the extreme win…
Cosmology & Space (🚀🌠)Article
Open →The Polar Vortex Test: Winter 2026–27, El Niño, the QBO and the Limits of Prediction
Five record-setting September polar-vortex wind days, an October shift below normal and a potentially historic El Niño set the stage for Northern Hemisphere winter 2026–27. Pattern Nexus reconstructs 36 winters of ENSO/QBO/Arctic Oscillation records and 32 se…
Energy & Thermodynamics (🔥⚙️)