Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #14-39 2014 September 28 at 10:23 p.m. MDT (2014 September 29 0423 UTC) **** SPACE WEATHER OUTLOOK **** Summary For September 22-28 Category R1 (Minor) radio blackouts occurred on 23, 27, and 28 Sep due to flare activity from active sunspot Regions 2172, 2173, and 2178. A category R2 (Moderate) radio blackout occurred on 28 Sep due to flare activity from active sunspot Region 2173. Outlook For September 29-October 5 Category R1-R2 (Minor to Moderate) radio blackouts are expected with a slight chance for a Category R3 (Strong) for the forecast period (Sep 29 - Oct 05) due to potential flare activity from active sunspot Regions 2172, 2173, 2175, and the return of old Regions 2157 and 2158. There is a slight chance for an S1 (Minor) solar radiation storm due to potential significant flare activity from active sunspot Regions 2172, 2173, 2175, and the return of old Regions 2157 and 2158. 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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