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In 2011, NOAA (NCEI and SWPC) developed a real-time version of the OVATION model to forecast the location and intensity of the aurora. Machol and Redmon (NCEI) developed the real-time ovation model.
HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact. Navigation: Low-frequency navigation signals degraded for brief intervals.
November 20, 2025 Assessing the Global Temperature and Precipitation Analysis in October 2025 Globally, October 2025 was the third-warmest October in NOAA’s 176-year record, with a temperature 2.21°F (1.23°C) higher than the 20th-century baseline.
