[Coronal event] Active region flare [Typical length-scale (Mm)] 10–100 [Typical time-scale] 
10 to 10,000 seconds
1 0 t o 1 0 , 0 0 0 s e c o n d s
m i n u t e s
f r o m m i n u t e s t o h o u r s
f r o m h o u r s t o m o n t h s
s e v e r a l r o t a t i o n s