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

SPACE WEATHER ADVISORY OUTLOOK #11- 25
2011 May 31 at 03:09 p.m. MDT (2011 May 31 2109 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For May 23-29
Category G1 (Minor) and G2 (Moderate) geomagnetic storms occurred on 28
- 29 May due to a coronal hole high-speed stream. R1 (Minor) radio
blackouts occurred on 28 - 29  May due to solar flares on the Sun.

Outlook For June 1-7
Category R1 (Minor) radio blackouts are possible through 09 June.

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

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