Space Weather Outlook December 21, 2015 at 12:09AM

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #15-51 2015 December 20 at 9:30 p.m. MST (2015 December 21 0430 UTC) **** SPACE WEATHER OUTLOOK **** Summary For December 14-20 G2 (Moderate) geomagnetic storms were observed on 20 December. G1 (Minor) geomagnetic storms were observed on 14, 15, and 20 December. No Radio Blackouts were observed during the summary period. No Solar Radiation storms were observed during the summary period. Outlook For December 21-27 G1-G3 (Minor-Strong) geomagnetic storms are expected on 21 December No Radio Blackouts are expected throughout the outlook period. No Solar Radiation storms are expected throughout the outlook period. 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.