NOAA / Space Weather Prediction Center

SWPC Space Weather Advisory

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

2010 April 20 at 11:11 a.m. MDT (2010 April 20 1711 UTC)


Summary For April 12-18 A category G2 (moderate) geomagnetic storm occurred on 12 April from 0000-0300 UTC due to a CME observed on 08 April. A category G1 (Minor) geomagnetic storm occurred on 14 April from 2100-2359 UTC due to a geo-effectively positioned coronal hole.

Outlook For April 21-27 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 or (303) 497-5127.

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