NOAA / Space Weather Prediction Center
Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA
SPACE WEATHER ADVISORY OUTLOOK #12-49
2012 October 21 at 9:04 p.m. MDT (2012 October 22 0304 UTC)
**** SPACE WEATHER OUTLOOK ****
Summary For October 15-21
A Category R2 (Moderate) Radio Blackout occurred on 20 October and a Category R1 (Minor) Radio Blackout occurred on 21 October. Both Radio Blackouts were due to solar flares from a sunspot region near the southeast limb.
Outlook For October 22-28
Category R1 (Minor) Radio Blackouts are likely throughout the period.
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NOAA Space Weather Scales - Description of catagories used in Outlooks.
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