{"id":799078,"date":"2025-11-11T05:55:29","date_gmt":"2025-11-11T10:55:29","guid":{"rendered":"https:\/\/spaceweekly.com\/?p=799078"},"modified":"2025-11-11T05:55:29","modified_gmt":"2025-11-11T10:55:29","slug":"strong-geomagnetic-storm-forecast-for-november-12-aurora-as-low-as-pennsylvania-iowa-and-oregon","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=799078","title":{"rendered":"Strong geomagnetic storm forecast for November 12, aurora as low as Pennsylvania, Iowa and Oregon"},"content":{"rendered":"
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Solar activity increased significantly over the past 24 hours due to a long-duration X1.2 solar flare at 09:19 UTC on November 10 from active Region 4274 (beta-gamma-delta).<\/p>\n
The eruption produced a Type II radio sweep with an estimated velocity of 1 321 km\/s (821 miles\/s), a Type IV emission, and an asymmetric halo coronal mass ejection (CME). The event was also accompanied by an F10.7 cm radio burst of 860 solar flux units and a Castelli-U radio burst, driving S1 \u2013 Minor Solar Radiation storming.<\/p>\n
The CME associated with the X1.2 flare is expected to arrive early on November 12, following an earlier CME from the X1.7 flare on November 9 that is forecast to arrive late on November 11. Together, these events are expected to produce enhanced solar wind conditions with speeds likely to exceed 700 km\/s (435 miles\/s).<\/p>\n