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Don't Miss Out: Northern Lights to Shine Bright Monday and Tuesday Night

  • On Tuesday, the National Oceanic and Atmospheric Administration's Space Weather Prediction Center issued a strong G3 geomagnetic storm watch for Tuesday, Dec. 9, with auroras possibly visible late Monday night into Tuesday night.
  • The M8.1 solar flare on Dec. 6 produced a full-halo coronal mass ejection, and that energetic solar material is expected to reach Earth Monday night and Tuesday.
  • NOAA's 3-day forecast shows peak G2–G3 windows into Dec. 9 morning, with the Kp index at six and parts of 17 U.S. states above the aurora view line, including Illinois and Oregon.
  • Skywatchers are advised to use smartphone cameras to scan the sky, NASA's Kelly Korreck recommends local or national parks, and experts say to let eyes adapt for at least 30 minutes and bundle up.
  • Following a recent G4 storm last month, forecasters warn G4-level watches remain rare this solar cycle with only four alerts, and NOAA cautions auroras could reach farther south if skies clear.
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King5 News broke the news in Seattle, United States on Monday, December 8, 2025.
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