[South Florida DX Association] Space-Weather-Bulletin

[Bill Marx]

Official Space Weather Advisory issued by NOAA Space Environment Center
> Boulder, Colorado, USA
> 
> SPACE WEATHER ADVISORY BULLETIN #05-1     
> 2005 January 14 at 03:51 p.m. MST (2005 January 14 2251 UTC)
> 
> **** RAPIDLY GROWING SUNSPOT REGION ****
> 
> On 10 January, a new sunspot group emerged and was assigned NOAA Region
> number 720. This sunspot group has grown rapidly and currently has an
> area of 1540 millionths of the size of the Solar disk (about 18 times
> the size of the Earth).  So far this region has only produced minor
> flare activity (R1). However, its growth and complexity suggest that it
> is capable of moderate to strong levels of flare activity (R2 to R3
> levels) during the next 7 days. .  
> 
> These types of flares lead to HF radio blackouts. The effects range from
> minor degradation of HF communication (R1), up to wide area blackouts
> on the daylit side of the earth for about an hour (R3).
>