NOAA / Space Weather Prediction Center

SWPC Space Weather Advisory

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

SPACE WEATHER ADVISORY OUTLOOK #11- 19
2011 April 19 at 12:12 p.m. MDT (2011 April 19 1812 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For April 11-17 A geomagnetic storm reaching the G1 (Minor) level occurred on 12 April due to the effects of a coronal hole high-speed stream. An R1 (Minor) radio blackout was observed at 15/1712 UTC associated with a solar flare.

Outlook For April 20-26 No space weather storms are expected.

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 http://swpc.noaa.gov/advisories or (303) 497-5127.


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