"She was white ajah. For an instant, Min saw an image of a raven floating beside her dark hair more of a drawing of the bird than the bird itself. She thought it was a tatoo, but she did not know its meaning.(pg. 317, The Fires of Heaven)."
"To Min's eyes, a silvery collar appeared, snug around the woman's neck, and as suddenly seemed to shatter...At least Edesina would escape, somehow. (pg. 320, The Fires of Heaven)"

(The first viewing), I think, is that the Aes Sedai Carlinya will be captured by the Seanchan, and taken back to the homeland, and questioned at the Tower of Ravens .This is why the raven is symbolic instead of an actual raven).

(The second viewing) I think that the tower in exile is going to meet up with a small detachment of Seanchan. Of course, the Seanchan will probably lose any real battle, but the sul'dams might leash a few before leaving. I don't know exactly where the Tower in exile is at the present time in the books, but the Seanchan just captured the Fortress of Light, which is right near Salidar. The Aes Sedai aren't moving very fast, because they are trying to recruit an army, so (look under the "Seanchans' next attack, at Mosleth's theory about the Seanchan forces splitting)if a detachment of scout for the Seanchan's next raid captured a few Aes Sedai, Min's viewings would be confirmed.
Another thought about upcoming events: I read (probably a sample from the dust jacket of the Path of Daggers) that Elayne, Nynaeve, and Aviendha go to Caemlyn. Therfore, they leave Mat to his doomdddddd--DoNM. There will be no attack from the Kin or Sea Folk.