Space Weather Outlook September 17, 2017 at 10:25PM

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #17-38 2017 September 17 at 8:11 p.m. MDT (2017 September 18 0211 UTC) **** SPACE WEATHER OUTLOOK **** Summary For September 11-17 Solar radiation storms reached S1 (Minor) levels on 11-14 Sep, S2 (Moderate) levels on 11-12 Sep and S3 (Strong) levels on 11 Sep. This activity was due to effects from a R3 (Strong) radio blackout observed on 10 Sep. Geomagnetic storms reached G1 (Minor) levels on 12-16 Sep and G2 (Moderate) levels on 14-16 Sep. The G1 activity on 12-13 Sep was related to CME effects while the G1-G2 activity on 14-16 Sep was related to CH HSS effects. Outlook For September 18-24 R1-R2 (Minor-Moderate) radio blackouts are possible on 23-24 Sep due to the return of old active Region 2673. S1-S2 (Minor-Moderate) solar radiation storms are possible on 23-24 Sep with any significant flare activity after the return of old Region 2673. Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More information is available at SWPC's Web site http://swpc.noaa.gov Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact SWPC Help.

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