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926 WOXX10 KWNP 201105 SUMSUD Space Weather Message Code: SUMSUD Serial Number: 191 Issue Time: 2014 Apr 20 1104 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2014 Apr 20 1057 UTC Deviation: 24 nT Station: Boulder # Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Recent messages, data, and help at http://swpc.noaa.gov/alerts/ # Send questions to SWPC.Webmaster@noaa.gov