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2012-03-07 01:03 Strong Solar Eruption; Earth-Directed CME Likely An R3 (Strong) Radio Blackout is now in progress, beginning about 7:00 p.m. EST today. The site of the eruption, previously active Region 1429, is now near center disk, so there's high-potential of an earth-directed CME. In addition, expect the imminent beginning of a Solar Radiation Storm.
Valid From: 2012 Mar 07 0300 UTC Valid To: 2012 Mar 07 2359 UTC Warning Condition: Onset Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.
WARNING: Proton 10MeV Integral Flux above 10pfu expected Valid From: 2012 Mar 07 0030 UTC Valid To: 2012 Mar 08 0000 UTC Warning Condition: Onset Predicted NOAA Scale: S1 - Minor Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.