From: Space Weather Prediction Center (NOAA)
Posted: Tuesday, March 6, 2012
Space Weather Message Code: SUMX01
Serial Number: 78
Issue Time: 2012 Mar 07 0057 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2012 Mar 07 0002 UTC
Maximum Time: 2012 Mar 07 0024 UTC
End Time: 2012 Mar 07 0040 UTC
X-ray Class: X5.4
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
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