NOAA / Space Weather Prediction Center

SWPC Space Weather Advisory

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA

2013 July 21 at 9:44 p.m. MDT (2013 July 22 0344 UTC)


Summary For July 15-21

Category G1 (Minor) geomagnetic storm conditions were observed on 15 July due to effects from coronal mass ejection passage.

Outlook For July 22-28

There is a slight chance for category R1 (Minor) radio blackouts throughout the period due to active region flare activity.

For current space weather conditions see: Space Weather Now, Today's Space Weather and Space Weather Alerts

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. For more information, including email services, see SWPC's Space Weather Advisories Web site or (303) 497-5127.

NOAA Space Weather Scales - Description of catagories used in Outlooks.