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

SPACE WEATHER ADVISORY OUTLOOK #12-23
2012 May 21 at 10:18 a.m. MDT (2012 May 21 1618 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For May 14-20

Category R2 (Moderate) radio blackouts were observed on 17 May due to flare activity from active sunspot Region 1476.

Category S1 (Minor) radiation storms were observed on 17 and 18 May due to solar activity from active sunspot region 1476.

Category S2 (Moderate) radiation storms were observed on 17 May due to solar activity from active sunspot Region 1476.

Outlook For May 21-27

No space weather storms are expected.

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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