Space Weather Message Code: ALTXMF Serial Number: 218 Issue Time: 2014 Apr 18 1317 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2014 Apr 18 1255 UTC NOAA Scale: R2 - Moderate Comment: CORRECTION: Date threshold reached should read 18 Apr 2014 at 1255 UTC NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/NOAAscales Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.
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