Space Weather Outlook May 25, 2015 at 04:29AM

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #15-21 2015 May 25 at 2:18 a.m. MDT (2015 May 25 0818 UTC) **** SPACE WEATHER OUTLOOK **** Summary For May 18-24 Category G1 (Minor) geomagnetic storming occurred on 18 May while category G2 (Moderate) geomagnetic storming occurred on 19 May due to coronal hole high speed stream effects. Outlook For May 25-31 A chance for R1-R2 (Minor-Moderate) radio blackouts exists from 30-31 May due to the return of old Region 2339. 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.