NOAA SEC Space Weather Bulletin #11- 1: Geomagnetic Storm Expected “NOAA Region 1261, very active over the past few days, produced the third of a sequence of Coronal Mass Ejections (CMEs) and Solar Radio Blackout Events early today. The net effect of that activity is convergent CMEs expected to disturb the geomagnetic field in the early hours, Universal Time (UTC) of August 5. G3 (Strong) Geomagnetic Storm conditions are likely […]

NASA Tamps Down Massive Solar Flare Impact Hype, PC World “While some of the coverage of the massive Valentine’s Day solar flare made it sound like the world was coming to an end, or darn close to it. NASA’s website this afternoon played another likely more realistic tune: “The particle cloud produced by the Valentine’s Day event appears to be rather weak and is not expected to produce any strong […]

Videos: Large Solar Flare and CME As Seen by the Solar Dynamics Observatory “This clip of the large X2 flare (Feb. 15, 2011) seen by Solar Dynamics Observatory (SDO) in extreme ultraviolet light has been enlarged and superimposed on SOHO’s C2 coronagraph for the same period. This was the largest flare in over four years. The coronagraph shows the faint edge of a “halo” coronal mass ejection (CME) as it […]

Joint USAF/NOAA Report of Solar and Geophysical Activity 1 August 2010 “Region 1092 (N13E21) produced a long-duration C3/Sf flare at 01/0826Z. The flare was associated with a Type IV radio sweep, an 890 sfu Tenflare, and an Earth-directed full-halo coronal mass ejection (CME). A disappearing filament (DSF) occurred during 01/0750 – 0811Z, centered near N37W32 and time coincident with the C3 flare. The DSF was associated with an Earth-directed partial-halo […]