Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #14-36 2014 September 8 at 12:36 a.m. MDT (2014 September 8 0636 UTC) **** SPACE WEATHER OUTLOOK **** Summary For September 1-7 Category R1 (Minor) radio blackouts were observed on 03 and 06 September due to flare activity from active sunspot Region 2152 and 2157. Outlook For September 8-14 Category R1-R2 (Minor-Moderate) is likely with a chance for R3 (Strong) radio blackouts for the forecast period (08-14 September) due to potential flare activity from Regions 2157 and 2158. There is a chance for S1 (Minor) solar radiation storms for the forecast period due to potential significant flare activity from 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.